Al Viro <viro@ftp.linux.org.uk>
Al Viro <viro@zenIV.linux.org.uk>
Andreas Herrmann <aherrman@de.ibm.com>
+Andrey Ryabinin <ryabinin.a.a@gmail.com> <a.ryabinin@samsung.com>
Andrew Morton <akpm@linux-foundation.org>
Andrew Vasquez <andrew.vasquez@qlogic.com>
Andy Adamson <andros@citi.umich.edu>
"qcom,kpss-acc-v1"
"qcom,kpss-acc-v2"
"rockchip,rk3066-smp"
+ "ste,dbx500-smp"
- cpu-release-addr
Usage: required for systems that have an "enable-method"
F: drivers/gpu/drm/rockchip/
F: Documentation/devicetree/bindings/video/rockchip*
+DRM DRIVERS FOR STI
+M: Benjamin Gaignard <benjamin.gaignard@linaro.org>
+M: Vincent Abriou <vincent.abriou@st.com>
+L: dri-devel@lists.freedesktop.org
+T: git http://git.linaro.org/people/benjamin.gaignard/kernel.git
+S: Maintained
+F: drivers/gpu/drm/sti
+F: Documentation/devicetree/bindings/gpu/st,stih4xx.txt
+
DSBR100 USB FM RADIO DRIVER
M: Alexey Klimov <klimov.linux@gmail.com>
L: linux-media@vger.kernel.org
VERSION = 4
PATCHLEVEL = 2
SUBLEVEL = 0
-EXTRAVERSION = -rc6
+EXTRAVERSION = -rc7
NAME = Hurr durr I'ma sheep
# *DOCUMENTATION*
config UPROBES
def_bool n
- select PERCPU_RWSEM
help
Uprobes is the user-space counterpart to kprobes: they
enable instrumentation applications (such as 'perf probe')
ranges = <0 0x2000 0x2000>;
scm_conf: scm_conf@0 {
- compatible = "syscon";
+ compatible = "syscon", "simple-bus";
reg = <0x0 0x1400>;
#address-cells = <1>;
#size-cells = <1>;
interrupt-names = "msi";
#interrupt-cells = <1>;
interrupt-map-mask = <0 0 0 0x7>;
- interrupt-map = <0 0 0 1 &intc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
- <0 0 0 2 &intc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
- <0 0 0 3 &intc GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
- <0 0 0 4 &intc GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-map = <0 0 0 1 &gpc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
+ <0 0 0 2 &gpc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
+ <0 0 0 3 &gpc GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
+ <0 0 0 4 &gpc GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clks IMX6QDL_CLK_PCIE_AXI>,
<&clks IMX6QDL_CLK_LVDS1_GATE>,
<&clks IMX6QDL_CLK_PCIE_REF_125M>;
<GIC_SPI 376 IRQ_TYPE_EDGE_RISING>;
};
};
+
+ mdio: mdio@24200f00 {
+ compatible = "ti,keystone_mdio", "ti,davinci_mdio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x24200f00 0x100>;
+ status = "disabled";
+ clocks = <&clkcpgmac>;
+ clock-names = "fck";
+ bus_freq = <2500000>;
+ };
/include/ "k2e-netcp.dtsi"
};
};
-
-&mdio {
- reg = <0x24200f00 0x100>;
-};
#gpio-cells = <2>;
gpio,syscon-dev = <&devctrl 0x25c>;
};
+
+ mdio: mdio@02090300 {
+ compatible = "ti,keystone_mdio", "ti,davinci_mdio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x02090300 0x100>;
+ status = "disabled";
+ clocks = <&clkcpgmac>;
+ clock-names = "fck";
+ bus_freq = <2500000>;
+ };
/include/ "k2hk-netcp.dtsi"
};
};
};
soc {
-
/include/ "k2l-clocks.dtsi"
uart2: serial@02348400 {
#gpio-cells = <2>;
gpio,syscon-dev = <&devctrl 0x24c>;
};
+
+ mdio: mdio@26200f00 {
+ compatible = "ti,keystone_mdio", "ti,davinci_mdio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x26200f00 0x100>;
+ status = "disabled";
+ clocks = <&clkcpgmac>;
+ clock-names = "fck";
+ bus_freq = <2500000>;
+ };
/include/ "k2l-netcp.dtsi"
};
};
/* Pin muxed. Enabled and configured by Bootloader */
status = "disabled";
};
-
-&mdio {
- reg = <0x26200f00 0x100>;
-};
1 0 0x21000A00 0x00000100>;
};
- mdio: mdio@02090300 {
- compatible = "ti,keystone_mdio", "ti,davinci_mdio";
- #address-cells = <1>;
- #size-cells = <0>;
- reg = <0x02090300 0x100>;
- status = "disabled";
- clocks = <&clkpa>;
- clock-names = "fck";
- bus_freq = <2500000>;
- };
-
kirq0: keystone_irq@26202a0 {
compatible = "ti,keystone-irq";
interrupts = <GIC_SPI 4 IRQ_TYPE_EDGE_RISING>;
};
scm_conf: scm_conf@270 {
- compatible = "syscon";
+ compatible = "syscon",
+ "simple-bus";
reg = <0x270 0x240>;
#address-cells = <1>;
#size-cells = <1>;
};
omap4_padconf_global: omap4_padconf_global@5a0 {
- compatible = "syscon";
+ compatible = "syscon",
+ "simple-bus";
reg = <0x5a0 0x170>;
#address-cells = <1>;
#size-cells = <1>;
};
omap5_padconf_global: omap5_padconf_global@5a0 {
- compatible = "syscon";
+ compatible = "syscon",
+ "simple-bus";
reg = <0x5a0 0xec>;
#address-cells = <1>;
#size-cells = <1>;
#include "skeleton.dtsi"
/ {
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ enable-method = "ste,dbx500-smp";
+
+ cpu-map {
+ cluster0 {
+ core0 {
+ cpu = <&CPU0>;
+ };
+ core1 {
+ cpu = <&CPU1>;
+ };
+ };
+ };
+ CPU0: cpu@300 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a9";
+ reg = <0x300>;
+ };
+ CPU1: cpu@301 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a9";
+ reg = <0x301>;
+ };
+ };
+
soc {
#address-cells = <1>;
#size-cells = <1>;
interrupt-parent = <&intc>;
ranges;
- cpus {
- #address-cells = <1>;
- #size-cells = <0>;
-
- cpu-map {
- cluster0 {
- core0 {
- cpu = <&CPU0>;
- };
- core1 {
- cpu = <&CPU1>;
- };
- };
- };
- CPU0: cpu@0 {
- device_type = "cpu";
- compatible = "arm,cortex-a9";
- reg = <0>;
- };
- CPU1: cpu@1 {
- device_type = "cpu";
- compatible = "arm,cortex-a9";
- reg = <1>;
- };
- };
-
ptm@801ae000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0x801ae000 0x1000>;
movlt scno, #(__NR_restart_syscall - __NR_SYSCALL_BASE)
ldmia sp, {r0 - r6} @ have to reload r0 - r6
b local_restart @ ... and off we go
+ENDPROC(ret_fast_syscall)
/*
* "slow" syscall return path. "why" tells us if this was a real syscall.
sub lr, r4, r5 @ mmu has been enabled
add r3, r7, lr
ldrd r4, [r3, #0] @ get secondary_data.pgdir
+ARM_BE8(eor r4, r4, r5) @ Swap r5 and r4 in BE:
+ARM_BE8(eor r5, r4, r5) @ it can be done in 3 steps
+ARM_BE8(eor r4, r4, r5) @ without using a temp reg.
ldr r8, [r3, #8] @ get secondary_data.swapper_pg_dir
badr lr, __enable_mmu @ return address
mov r13, r12 @ __secondary_switched address
*/
void update_vsyscall(struct timekeeper *tk)
{
- struct timespec xtime_coarse;
struct timespec64 *wtm = &tk->wall_to_monotonic;
if (!cntvct_ok) {
vdso_write_begin(vdso_data);
- xtime_coarse = __current_kernel_time();
vdso_data->tk_is_cntvct = tk_is_cntvct(tk);
- vdso_data->xtime_coarse_sec = xtime_coarse.tv_sec;
- vdso_data->xtime_coarse_nsec = xtime_coarse.tv_nsec;
+ vdso_data->xtime_coarse_sec = tk->xtime_sec;
+ vdso_data->xtime_coarse_nsec = (u32)(tk->tkr_mono.xtime_nsec >>
+ tk->tkr_mono.shift);
vdso_data->wtm_clock_sec = wtm->tv_sec;
vdso_data->wtm_clock_nsec = wtm->tv_nsec;
pd->base = of_iomap(np, 0);
if (!pd->base) {
pr_warn("%s: failed to map memory\n", __func__);
- kfree(pd->pd.name);
+ kfree_const(pd->pd.name);
kfree(pd);
- of_node_put(np);
continue;
}
VDSO_LDFLAGS += -nostdlib -shared
VDSO_LDFLAGS += $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
VDSO_LDFLAGS += $(call cc-ldoption, -Wl$(comma)--build-id)
-VDSO_LDFLAGS += $(call cc-option, -fuse-ld=bfd)
+VDSO_LDFLAGS += $(call cc-ldoption, -fuse-ld=bfd)
obj-$(CONFIG_VDSO) += vdso.o
extra-$(CONFIG_VDSO) += vdso.lds
*/
void update_vsyscall(struct timekeeper *tk)
{
- struct timespec xtime_coarse;
u32 use_syscall = strcmp(tk->tkr_mono.clock->name, "arch_sys_counter");
++vdso_data->tb_seq_count;
smp_wmb();
- xtime_coarse = __current_kernel_time();
vdso_data->use_syscall = use_syscall;
- vdso_data->xtime_coarse_sec = xtime_coarse.tv_sec;
- vdso_data->xtime_coarse_nsec = xtime_coarse.tv_nsec;
+ vdso_data->xtime_coarse_sec = tk->xtime_sec;
+ vdso_data->xtime_coarse_nsec = tk->tkr_mono.xtime_nsec >>
+ tk->tkr_mono.shift;
vdso_data->wtm_clock_sec = tk->wall_to_monotonic.tv_sec;
vdso_data->wtm_clock_nsec = tk->wall_to_monotonic.tv_nsec;
SAVE_STATIC
move s0, t2
move a0, sp
- daddiu a1, v0, __NR_64_Linux
+ move a1, v0
jal syscall_trace_enter
bltz v0, 2f # seccomp failed? Skip syscall
SAVE_STATIC
move s0, t2
move a0, sp
- daddiu a1, v0, __NR_N32_Linux
+ move a1, v0
jal syscall_trace_enter
bltz v0, 2f # seccomp failed? Skip syscall
*/
andl $~TS_COMPAT, ASM_THREAD_INFO(TI_status, %rsp, SIZEOF_PTREGS)
movl RIP(%rsp), %ecx /* User %eip */
+ movq RAX(%rsp), %rax
RESTORE_RSI_RDI
xorl %edx, %edx /* Do not leak kernel information */
xorq %r8, %r8
1: setbe %al /* 1 if error, 0 if not */
movzbl %al, %edi /* zero-extend that into %edi */
call __audit_syscall_exit
- movq RAX(%rsp), %rax /* reload syscall return value */
movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT), %edi
DISABLE_INTERRUPTS(CLBR_NONE)
TRACE_IRQS_OFF
RESTORE_RSI_RDI_RDX
movl RIP(%rsp), %ecx
movl EFLAGS(%rsp), %r11d
+ movq RAX(%rsp), %rax
xorq %r10, %r10
xorq %r9, %r9
xorq %r8, %r8
unsigned long ip;
unsigned long flags;
unsigned short cs;
- unsigned short __pad2; /* Was called gs, but was always zero. */
- unsigned short __pad1; /* Was called fs, but was always zero. */
- unsigned short ss;
+ unsigned short gs;
+ unsigned short fs;
+ unsigned short __pad0;
unsigned long err;
unsigned long trapno;
unsigned long oldmask;
__u64 rip;
__u64 eflags; /* RFLAGS */
__u16 cs;
-
- /*
- * Prior to 2.5.64 ("[PATCH] x86-64 updates for 2.5.64-bk3"),
- * Linux saved and restored fs and gs in these slots. This
- * was counterproductive, as fsbase and gsbase were never
- * saved, so arch_prctl was presumably unreliable.
- *
- * If these slots are ever needed for any other purpose, there
- * is some risk that very old 64-bit binaries could get
- * confused. I doubt that many such binaries still work,
- * though, since the same patch in 2.5.64 also removed the
- * 64-bit set_thread_area syscall, so it appears that there is
- * no TLS API that works in both pre- and post-2.5.64 kernels.
- */
- __u16 __pad2; /* Was gs. */
- __u16 __pad1; /* Was fs. */
-
- __u16 ss;
+ __u16 gs;
+ __u16 fs;
+ __u16 __pad0;
__u64 err;
__u64 trapno;
__u64 oldmask;
if (x86_pmu.extra_regs || x86_pmu.lbr_sel_map) {
cpuc->shared_regs = allocate_shared_regs(cpu);
if (!cpuc->shared_regs)
- return NOTIFY_BAD;
+ goto err;
}
if (x86_pmu.flags & PMU_FL_EXCL_CNTRS) {
cpuc->constraint_list = kzalloc(sz, GFP_KERNEL);
if (!cpuc->constraint_list)
- return NOTIFY_BAD;
+ goto err_shared_regs;
cpuc->excl_cntrs = allocate_excl_cntrs(cpu);
- if (!cpuc->excl_cntrs) {
- kfree(cpuc->constraint_list);
- kfree(cpuc->shared_regs);
- return NOTIFY_BAD;
- }
+ if (!cpuc->excl_cntrs)
+ goto err_constraint_list;
+
cpuc->excl_thread_id = 0;
}
return NOTIFY_OK;
+
+err_constraint_list:
+ kfree(cpuc->constraint_list);
+ cpuc->constraint_list = NULL;
+
+err_shared_regs:
+ kfree(cpuc->shared_regs);
+ cpuc->shared_regs = NULL;
+
+err:
+ return NOTIFY_BAD;
}
static void intel_pmu_cpu_starting(int cpu)
cpumask_set_cpu(cpu, &cqm_cpumask);
}
-static void intel_cqm_cpu_prepare(unsigned int cpu)
+static void intel_cqm_cpu_starting(unsigned int cpu)
{
struct intel_pqr_state *state = &per_cpu(pqr_state, cpu);
struct cpuinfo_x86 *c = &cpu_data(cpu);
unsigned int cpu = (unsigned long)hcpu;
switch (action & ~CPU_TASKS_FROZEN) {
- case CPU_UP_PREPARE:
- intel_cqm_cpu_prepare(cpu);
- break;
case CPU_DOWN_PREPARE:
intel_cqm_cpu_exit(cpu);
break;
case CPU_STARTING:
+ intel_cqm_cpu_starting(cpu);
cqm_pick_event_reader(cpu);
break;
}
goto out;
for_each_online_cpu(i) {
- intel_cqm_cpu_prepare(i);
+ intel_cqm_cpu_starting(i);
cqm_pick_event_reader(i);
}
COPY(r15);
#endif /* CONFIG_X86_64 */
+#ifdef CONFIG_X86_32
COPY_SEG_CPL3(cs);
COPY_SEG_CPL3(ss);
+#else /* !CONFIG_X86_32 */
+ /* Kernel saves and restores only the CS segment register on signals,
+ * which is the bare minimum needed to allow mixed 32/64-bit code.
+ * App's signal handler can save/restore other segments if needed. */
+ COPY_SEG_CPL3(cs);
+#endif /* CONFIG_X86_32 */
get_user_ex(tmpflags, &sc->flags);
regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
#else /* !CONFIG_X86_32 */
put_user_ex(regs->flags, &sc->flags);
put_user_ex(regs->cs, &sc->cs);
- put_user_ex(0, &sc->__pad2);
- put_user_ex(0, &sc->__pad1);
- put_user_ex(regs->ss, &sc->ss);
+ put_user_ex(0, &sc->gs);
+ put_user_ex(0, &sc->fs);
#endif /* CONFIG_X86_32 */
put_user_ex(fpstate, &sc->fpstate);
regs->sp = (unsigned long)frame;
- /*
- * Set up the CS and SS registers to run signal handlers in
- * 64-bit mode, even if the handler happens to be interrupting
- * 32-bit or 16-bit code.
- *
- * SS is subtle. In 64-bit mode, we don't need any particular
- * SS descriptor, but we do need SS to be valid. It's possible
- * that the old SS is entirely bogus -- this can happen if the
- * signal we're trying to deliver is #GP or #SS caused by a bad
- * SS value.
- */
+ /* Set up the CS register to run signal handlers in 64-bit mode,
+ even if the handler happens to be interrupting 32-bit code. */
regs->cs = __USER_CS;
- regs->ss = __USER_DS;
return 0;
}
struct desc_struct *desc;
unsigned long base;
- seg &= ~7UL;
+ seg >>= 3;
mutex_lock(&child->mm->context.lock);
if (unlikely(!child->mm->context.ldt ||
- (seg >> 3) >= child->mm->context.ldt->size))
+ seg >= child->mm->context.ldt->size))
addr = -1L; /* bogus selector, access would fault */
else {
desc = &child->mm->context.ldt->entries[seg];
if (guest_cpuid_has_tsc_adjust(vcpu)) {
if (!msr_info->host_initiated) {
s64 adj = data - vcpu->arch.ia32_tsc_adjust_msr;
- kvm_x86_ops->adjust_tsc_offset(vcpu, adj, true);
+ adjust_tsc_offset_guest(vcpu, adj);
}
vcpu->arch.ia32_tsc_adjust_msr = data;
}
static void process_smi(struct kvm_vcpu *vcpu)
{
struct kvm_segment cs, ds;
+ struct desc_ptr dt;
char buf[512];
u32 cr0;
kvm_x86_ops->set_cr4(vcpu, 0);
+ /* Undocumented: IDT limit is set to zero on entry to SMM. */
+ dt.address = dt.size = 0;
+ kvm_x86_ops->set_idt(vcpu, &dt);
+
__kvm_set_dr(vcpu, 7, DR7_FIXED_1);
cs.selector = (vcpu->arch.smbase >> 4) & 0xffff;
#include <asm/uaccess.h>
#include <asm/traps.h>
-#include <asm/desc.h>
#include <asm/user.h>
#include <asm/fpu/internal.h>
math_abort(FPU_info, SIGILL);
}
- code_descriptor = LDT_DESCRIPTOR(FPU_CS);
+ code_descriptor = FPU_get_ldt_descriptor(FPU_CS);
if (SEG_D_SIZE(code_descriptor)) {
/* The above test may be wrong, the book is not clear */
/* Segmented 32 bit protected mode */
#include <linux/kernel.h>
#include <linux/mm.h>
-/* s is always from a cpu register, and the cpu does bounds checking
- * during register load --> no further bounds checks needed */
-#define LDT_DESCRIPTOR(s) (((struct desc_struct *)current->mm->context.ldt)[(s) >> 3])
+#include <asm/desc.h>
+#include <asm/mmu_context.h>
+
+static inline struct desc_struct FPU_get_ldt_descriptor(unsigned seg)
+{
+ static struct desc_struct zero_desc;
+ struct desc_struct ret = zero_desc;
+
+#ifdef CONFIG_MODIFY_LDT_SYSCALL
+ seg >>= 3;
+ mutex_lock(¤t->mm->context.lock);
+ if (current->mm->context.ldt && seg < current->mm->context.ldt->size)
+ ret = current->mm->context.ldt->entries[seg];
+ mutex_unlock(¤t->mm->context.lock);
+#endif
+ return ret;
+}
+
#define SEG_D_SIZE(x) ((x).b & (3 << 21))
#define SEG_G_BIT(x) ((x).b & (1 << 23))
#define SEG_GRANULARITY(x) (((x).b & (1 << 23)) ? 4096 : 1)
#include <linux/stddef.h>
#include <asm/uaccess.h>
-#include <asm/desc.h>
#include "fpu_system.h"
#include "exception.h"
addr->selector = PM_REG_(segment);
}
- descriptor = LDT_DESCRIPTOR(PM_REG_(segment));
+ descriptor = FPU_get_ldt_descriptor(addr->selector);
base_address = SEG_BASE_ADDR(descriptor);
address = base_address + offset;
limit = base_address
obj-y := enlighten.o setup.o multicalls.o mmu.o irq.o \
time.o xen-asm.o xen-asm_$(BITS).o \
grant-table.o suspend.o platform-pci-unplug.o \
- p2m.o
+ p2m.o apic.o
obj-$(CONFIG_EVENT_TRACING) += trace.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_PARAVIRT_SPINLOCKS)+= spinlock.o
obj-$(CONFIG_XEN_DEBUG_FS) += debugfs.o
-obj-$(CONFIG_XEN_DOM0) += apic.o vga.o
+obj-$(CONFIG_XEN_DOM0) += vga.o
obj-$(CONFIG_SWIOTLB_XEN) += pci-swiotlb-xen.o
obj-$(CONFIG_XEN_EFI) += efi.o
#ifdef CONFIG_XEN_DOM0
void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size);
-void __init xen_init_apic(void);
#else
static inline void __init xen_init_vga(const struct dom0_vga_console_info *info,
size_t size)
{
}
-static inline void __init xen_init_apic(void)
-{
-}
#endif
+void __init xen_init_apic(void);
+
#ifdef CONFIG_XEN_EFI
extern void xen_efi_init(void);
#else
* Description:
* Enables a low level driver to set a hard upper limit,
* max_hw_sectors, on the size of requests. max_hw_sectors is set by
- * the device driver based upon the combined capabilities of I/O
- * controller and storage device.
+ * the device driver based upon the capabilities of the I/O
+ * controller.
*
* max_sectors is a soft limit imposed by the block layer for
* filesystem type requests. This value can be overridden on a
if (!blk)
return -ENOMEM;
- present = krealloc(rbnode->cache_present,
- BITS_TO_LONGS(blklen) * sizeof(*present), GFP_KERNEL);
- if (!present) {
- kfree(blk);
- return -ENOMEM;
+ if (BITS_TO_LONGS(blklen) > BITS_TO_LONGS(rbnode->blklen)) {
+ present = krealloc(rbnode->cache_present,
+ BITS_TO_LONGS(blklen) * sizeof(*present),
+ GFP_KERNEL);
+ if (!present) {
+ kfree(blk);
+ return -ENOMEM;
+ }
+
+ memset(present + BITS_TO_LONGS(rbnode->blklen), 0,
+ (BITS_TO_LONGS(blklen) - BITS_TO_LONGS(rbnode->blklen))
+ * sizeof(*present));
+ } else {
+ present = rbnode->cache_present;
}
/* insert the register value in the correct place in the rbnode block */
return;
}
- if (work_pending(&blkif->persistent_purge_work)) {
- pr_alert_ratelimited("Scheduled work from previous purge is still pending, cannot purge list\n");
+ if (work_busy(&blkif->persistent_purge_work)) {
+ pr_alert_ratelimited("Scheduled work from previous purge is still busy, cannot purge list\n");
return;
}
((_segs + SEGS_PER_INDIRECT_FRAME - 1)/SEGS_PER_INDIRECT_FRAME)
static int blkfront_setup_indirect(struct blkfront_info *info);
+static int blkfront_gather_backend_features(struct blkfront_info *info);
static int get_id_from_freelist(struct blkfront_info *info)
{
* Add the used indirect page back to the list of
* available pages for indirect grefs.
*/
- indirect_page = pfn_to_page(s->indirect_grants[i]->pfn);
- list_add(&indirect_page->lru, &info->indirect_pages);
+ if (!info->feature_persistent) {
+ indirect_page = pfn_to_page(s->indirect_grants[i]->pfn);
+ list_add(&indirect_page->lru, &info->indirect_pages);
+ }
s->indirect_grants[i]->gref = GRANT_INVALID_REF;
list_add_tail(&s->indirect_grants[i]->node, &info->grants);
}
info->shadow_free = info->ring.req_prod_pvt;
info->shadow[BLK_RING_SIZE(info)-1].req.u.rw.id = 0x0fffffff;
- rc = blkfront_setup_indirect(info);
+ rc = blkfront_gather_backend_features(info);
if (rc) {
kfree(copy);
return rc;
static int blkfront_setup_indirect(struct blkfront_info *info)
{
- unsigned int indirect_segments, segs;
+ unsigned int segs;
int err, i;
- err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
- "feature-max-indirect-segments", "%u", &indirect_segments,
- NULL);
- if (err) {
- info->max_indirect_segments = 0;
+ if (info->max_indirect_segments == 0)
segs = BLKIF_MAX_SEGMENTS_PER_REQUEST;
- } else {
- info->max_indirect_segments = min(indirect_segments,
- xen_blkif_max_segments);
+ else
segs = info->max_indirect_segments;
- }
err = fill_grant_buffer(info, (segs + INDIRECT_GREFS(segs)) * BLK_RING_SIZE(info));
if (err)
return -ENOMEM;
}
+/*
+ * Gather all backend feature-*
+ */
+static int blkfront_gather_backend_features(struct blkfront_info *info)
+{
+ int err;
+ int barrier, flush, discard, persistent;
+ unsigned int indirect_segments;
+
+ info->feature_flush = 0;
+
+ err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
+ "feature-barrier", "%d", &barrier,
+ NULL);
+
+ /*
+ * If there's no "feature-barrier" defined, then it means
+ * we're dealing with a very old backend which writes
+ * synchronously; nothing to do.
+ *
+ * If there are barriers, then we use flush.
+ */
+ if (!err && barrier)
+ info->feature_flush = REQ_FLUSH | REQ_FUA;
+ /*
+ * And if there is "feature-flush-cache" use that above
+ * barriers.
+ */
+ err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
+ "feature-flush-cache", "%d", &flush,
+ NULL);
+
+ if (!err && flush)
+ info->feature_flush = REQ_FLUSH;
+
+ err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
+ "feature-discard", "%d", &discard,
+ NULL);
+
+ if (!err && discard)
+ blkfront_setup_discard(info);
+
+ err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
+ "feature-persistent", "%u", &persistent,
+ NULL);
+ if (err)
+ info->feature_persistent = 0;
+ else
+ info->feature_persistent = persistent;
+
+ err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
+ "feature-max-indirect-segments", "%u", &indirect_segments,
+ NULL);
+ if (err)
+ info->max_indirect_segments = 0;
+ else
+ info->max_indirect_segments = min(indirect_segments,
+ xen_blkif_max_segments);
+
+ return blkfront_setup_indirect(info);
+}
+
/*
* Invoked when the backend is finally 'ready' (and has told produced
* the details about the physical device - #sectors, size, etc).
unsigned int physical_sector_size;
unsigned int binfo;
int err;
- int barrier, flush, discard, persistent;
switch (info->connected) {
case BLKIF_STATE_CONNECTED:
if (err != 1)
physical_sector_size = sector_size;
- info->feature_flush = 0;
-
- err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
- "feature-barrier", "%d", &barrier,
- NULL);
-
- /*
- * If there's no "feature-barrier" defined, then it means
- * we're dealing with a very old backend which writes
- * synchronously; nothing to do.
- *
- * If there are barriers, then we use flush.
- */
- if (!err && barrier)
- info->feature_flush = REQ_FLUSH | REQ_FUA;
- /*
- * And if there is "feature-flush-cache" use that above
- * barriers.
- */
- err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
- "feature-flush-cache", "%d", &flush,
- NULL);
-
- if (!err && flush)
- info->feature_flush = REQ_FLUSH;
-
- err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
- "feature-discard", "%d", &discard,
- NULL);
-
- if (!err && discard)
- blkfront_setup_discard(info);
-
- err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
- "feature-persistent", "%u", &persistent,
- NULL);
- if (err)
- info->feature_persistent = 0;
- else
- info->feature_persistent = persistent;
-
- err = blkfront_setup_indirect(info);
+ err = blkfront_gather_backend_features(info);
if (err) {
xenbus_dev_fatal(info->xbdev, err, "setup_indirect at %s",
info->xbdev->otherend);
kfree(meta);
}
-static struct zram_meta *zram_meta_alloc(int device_id, u64 disksize)
+static struct zram_meta *zram_meta_alloc(char *pool_name, u64 disksize)
{
size_t num_pages;
- char pool_name[8];
struct zram_meta *meta = kmalloc(sizeof(*meta), GFP_KERNEL);
if (!meta)
goto out_error;
}
- snprintf(pool_name, sizeof(pool_name), "zram%d", device_id);
meta->mem_pool = zs_create_pool(pool_name, GFP_NOIO | __GFP_HIGHMEM);
if (!meta->mem_pool) {
pr_err("Error creating memory pool\n");
return -EINVAL;
disksize = PAGE_ALIGN(disksize);
- meta = zram_meta_alloc(zram->disk->first_minor, disksize);
+ meta = zram_meta_alloc(zram->disk->disk_name, disksize);
if (!meta)
return -ENOMEM;
PARENTS(pxa3xx_sbus) = { "ring_osc_60mhz", "system_bus" };
PARENTS(pxa3xx_smemcbus) = { "ring_osc_60mhz", "smemc" };
-#define CKEN_AB(bit) ((CKEN_ ## bit > 31) ? &CKENA : &CKENB)
+#define CKEN_AB(bit) ((CKEN_ ## bit > 31) ? &CKENB : &CKENA)
#define PXA3XX_CKEN(dev_id, con_id, parents, mult_lp, div_lp, mult_hp, \
div_hp, bit, is_lp, flags) \
PXA_CKEN(dev_id, con_id, bit, parents, mult_lp, div_lp, \
{
struct sh_cmt_channel *ch = cs_to_sh_cmt(cs);
+ if (!ch->cs_enabled)
+ return;
+
sh_cmt_stop(ch, FLAG_CLOCKSOURCE);
pm_genpd_syscore_poweroff(&ch->cmt->pdev->dev);
}
{
struct sh_cmt_channel *ch = cs_to_sh_cmt(cs);
+ if (!ch->cs_enabled)
+ return;
+
pm_genpd_syscore_poweron(&ch->cmt->pdev->dev);
sh_cmt_start(ch, FLAG_CLOCKSOURCE);
}
*/
for (row = 0; row < mci->nr_csrows; row++) {
- struct csrow_info *csi = &mci->csrows[row];
+ struct csrow_info *csi = mci->csrows[row];
/*
* Get the configuration settings for this
unsigned height_in_mb = ALIGN(height / 16, 2);
unsigned fs_in_mb = width_in_mb * height_in_mb;
- unsigned image_size, tmp, min_dpb_size, num_dpb_buffer;
+ unsigned image_size, tmp, min_dpb_size, num_dpb_buffer, min_ctx_size;
image_size = width * height;
image_size += image_size / 2;
num_dpb_buffer = (le32_to_cpu(msg[59]) & 0xff) + 2;
min_dpb_size = image_size * num_dpb_buffer;
+ min_ctx_size = ((width + 255) / 16) * ((height + 255) / 16)
+ * 16 * num_dpb_buffer + 52 * 1024;
break;
default:
buf_sizes[0x1] = dpb_size;
buf_sizes[0x2] = image_size;
+ buf_sizes[0x4] = min_ctx_size;
return 0;
}
return -EINVAL;
}
+ } else if (cmd == 0x206) {
+ if ((end - start) < ctx->buf_sizes[4]) {
+ DRM_ERROR("buffer (%d) to small (%d / %d)!\n", cmd,
+ (unsigned)(end - start),
+ ctx->buf_sizes[4]);
+ return -EINVAL;
+ }
} else if ((cmd != 0x100) && (cmd != 0x204)) {
DRM_ERROR("invalid UVD command %X!\n", cmd);
return -EINVAL;
struct amdgpu_uvd_cs_ctx ctx = {};
unsigned buf_sizes[] = {
[0x00000000] = 2048,
- [0x00000001] = 32 * 1024 * 1024,
- [0x00000002] = 2048 * 1152 * 3,
+ [0x00000001] = 0xFFFFFFFF,
+ [0x00000002] = 0xFFFFFFFF,
[0x00000003] = 2048,
+ [0x00000004] = 0xFFFFFFFF,
};
struct amdgpu_ib *ib = &parser->ibs[ib_idx];
int r;
WREG32(mmCP_MEC_DOORBELL_RANGE_LOWER,
AMDGPU_DOORBELL_KIQ << 2);
WREG32(mmCP_MEC_DOORBELL_RANGE_UPPER,
- 0x7FFFF << 2);
+ AMDGPU_DOORBELL_MEC_RING7 << 2);
}
tmp = RREG32(mmCP_HQD_PQ_DOORBELL_CONTROL);
tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_DOORBELL_CONTROL,
spin_lock_init(&ctx->lock);
platform_set_drvdata(pdev, ctx);
- pm_runtime_set_active(dev);
pm_runtime_enable(dev);
ret = exynos_drm_ippdrv_register(ippdrv);
gsc_write(cfg, GSC_IN_CON);
- ctx->rotation = cfg &
- (GSC_IN_ROT_90 | GSC_IN_ROT_270) ? 1 : 0;
+ ctx->rotation = (cfg & GSC_IN_ROT_90) ? 1 : 0;
*swap = ctx->rotation;
return 0;
gsc_write(cfg, GSC_IN_CON);
- ctx->rotation = cfg &
- (GSC_IN_ROT_90 | GSC_IN_ROT_270) ? 1 : 0;
+ ctx->rotation = (cfg & GSC_IN_ROT_90) ? 1 : 0;
*swap = ctx->rotation;
return 0;
{
struct hdmi_context *hdata = ctx_from_connector(connector);
struct edid *edid;
+ int ret;
if (!hdata->ddc_adpt)
return -ENODEV;
drm_mode_connector_update_edid_property(connector, edid);
- return drm_add_edid_modes(connector, edid);
+ ret = drm_add_edid_modes(connector, edid);
+
+ kfree(edid);
+
+ return ret;
}
static int hdmi_find_phy_conf(struct hdmi_context *hdata, u32 pixel_clock)
/* handling VSYNC */
if (val & MXR_INT_STATUS_VSYNC) {
+ /* vsync interrupt use different bit for read and clear */
+ val |= MXR_INT_CLEAR_VSYNC;
+ val &= ~MXR_INT_STATUS_VSYNC;
+
/* interlace scan need to check shadow register */
if (ctx->interlace) {
base = mixer_reg_read(res, MXR_GRAPHIC_BASE(0));
out:
/* clear interrupts */
- if (~val & MXR_INT_EN_VSYNC) {
- /* vsync interrupt use different bit for read and clear */
- val &= ~MXR_INT_EN_VSYNC;
- val |= MXR_INT_CLEAR_VSYNC;
- }
mixer_reg_write(res, MXR_INT_STATUS, val);
spin_unlock(&res->reg_slock);
}
/* enable vsync interrupt */
- mixer_reg_writemask(res, MXR_INT_EN, MXR_INT_EN_VSYNC,
- MXR_INT_EN_VSYNC);
+ mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
+ mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
return 0;
}
struct mixer_context *mixer_ctx = crtc->ctx;
struct mixer_resources *res = &mixer_ctx->mixer_res;
+ if (!mixer_ctx->powered) {
+ mixer_ctx->int_en &= MXR_INT_EN_VSYNC;
+ return;
+ }
+
/* disable vsync interrupt */
+ mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
}
mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
+ if (ctx->int_en & MXR_INT_EN_VSYNC)
+ mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
mixer_reg_write(res, MXR_INT_EN, ctx->int_en);
mixer_win_reset(ctx);
}
return 0;
}
-static int
-gk104_fifo_chan_kick(struct gk104_fifo_chan *chan)
-{
- struct nvkm_object *obj = (void *)chan;
- struct gk104_fifo_priv *priv = (void *)obj->engine;
-
- nv_wr32(priv, 0x002634, chan->base.chid);
- if (!nv_wait(priv, 0x002634, 0x100000, 0x000000)) {
- nv_error(priv, "channel %d [%s] kick timeout\n",
- chan->base.chid, nvkm_client_name(chan));
- return -EBUSY;
- }
-
- return 0;
-}
-
static int
gk104_fifo_context_detach(struct nvkm_object *parent, bool suspend,
struct nvkm_object *object)
{
struct nvkm_bar *bar = nvkm_bar(parent);
+ struct gk104_fifo_priv *priv = (void *)parent->engine;
struct gk104_fifo_base *base = (void *)parent->parent;
struct gk104_fifo_chan *chan = (void *)parent;
u32 addr;
- int ret;
switch (nv_engidx(object->engine)) {
case NVDEV_ENGINE_SW : return 0;
return -EINVAL;
}
- ret = gk104_fifo_chan_kick(chan);
- if (ret && suspend)
- return ret;
+ nv_wr32(priv, 0x002634, chan->base.chid);
+ if (!nv_wait(priv, 0x002634, 0xffffffff, chan->base.chid)) {
+ nv_error(priv, "channel %d [%s] kick timeout\n",
+ chan->base.chid, nvkm_client_name(chan));
+ if (suspend)
+ return -EBUSY;
+ }
if (addr) {
nv_wo32(base, addr + 0x00, 0x00000000);
gk104_fifo_runlist_update(priv, chan->engine);
}
- gk104_fifo_chan_kick(chan);
nv_wr32(priv, 0x800000 + (chid * 8), 0x00000000);
return nvkm_fifo_channel_fini(&chan->base, suspend);
}
ret = ttm_eu_reserve_buffers(&ticket, &sw_context->validate_nodes,
true, NULL);
if (unlikely(ret != 0))
- goto out_err;
+ goto out_err_nores;
ret = vmw_validate_buffers(dev_priv, sw_context);
if (unlikely(ret != 0))
vmw_resource_relocations_free(&sw_context->res_relocations);
vmw_fifo_commit(dev_priv, command_size);
+ mutex_unlock(&dev_priv->binding_mutex);
vmw_query_bo_switch_commit(dev_priv, sw_context);
ret = vmw_execbuf_fence_commands(file_priv, dev_priv,
DRM_ERROR("Fence submission error. Syncing.\n");
vmw_resource_list_unreserve(&sw_context->resource_list, false);
- mutex_unlock(&dev_priv->binding_mutex);
ttm_eu_fence_buffer_objects(&ticket, &sw_context->validate_nodes,
(void *) fence);
MODULE_AUTHOR("Joe Thornber <dm-devel@redhat.com>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("mq cache policy");
-
-MODULE_ALIAS("dm-cache-default");
MODULE_AUTHOR("Joe Thornber <dm-devel@redhat.com>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("smq cache policy");
+
+MODULE_ALIAS("dm-cache-default");
return r;
disk_super = dm_block_data(copy);
- dm_sm_dec_block(pmd->metadata_sm, le64_to_cpu(disk_super->data_mapping_root));
- dm_sm_dec_block(pmd->metadata_sm, le64_to_cpu(disk_super->device_details_root));
+ dm_btree_del(&pmd->info, le64_to_cpu(disk_super->data_mapping_root));
+ dm_btree_del(&pmd->details_info, le64_to_cpu(disk_super->device_details_root));
dm_sm_dec_block(pmd->metadata_sm, held_root);
return dm_tm_unlock(pmd->tm, copy);
extern struct dm_block_validator btree_node_validator;
+/*
+ * Value type for upper levels of multi-level btrees.
+ */
+extern void init_le64_type(struct dm_transaction_manager *tm,
+ struct dm_btree_value_type *vt);
+
#endif /* DM_BTREE_INTERNAL_H */
return r;
}
-static struct dm_btree_value_type le64_type = {
- .context = NULL,
- .size = sizeof(__le64),
- .inc = NULL,
- .dec = NULL,
- .equal = NULL
-};
-
int dm_btree_remove(struct dm_btree_info *info, dm_block_t root,
uint64_t *keys, dm_block_t *new_root)
{
int index = 0, r = 0;
struct shadow_spine spine;
struct btree_node *n;
+ struct dm_btree_value_type le64_vt;
+ init_le64_type(info->tm, &le64_vt);
init_shadow_spine(&spine, info);
for (level = 0; level < info->levels; level++) {
r = remove_raw(&spine, info,
(level == last_level ?
- &info->value_type : &le64_type),
+ &info->value_type : &le64_vt),
root, keys[level], (unsigned *)&index);
if (r < 0)
break;
int index = 0, r = 0;
struct shadow_spine spine;
struct btree_node *n;
+ struct dm_btree_value_type le64_vt;
uint64_t k;
+ init_le64_type(info->tm, &le64_vt);
init_shadow_spine(&spine, info);
for (level = 0; level < last_level; level++) {
- r = remove_raw(&spine, info, &le64_type,
+ r = remove_raw(&spine, info, &le64_vt,
root, keys[level], (unsigned *) &index);
if (r < 0)
goto out;
{
return s->root;
}
+
+static void le64_inc(void *context, const void *value_le)
+{
+ struct dm_transaction_manager *tm = context;
+ __le64 v_le;
+
+ memcpy(&v_le, value_le, sizeof(v_le));
+ dm_tm_inc(tm, le64_to_cpu(v_le));
+}
+
+static void le64_dec(void *context, const void *value_le)
+{
+ struct dm_transaction_manager *tm = context;
+ __le64 v_le;
+
+ memcpy(&v_le, value_le, sizeof(v_le));
+ dm_tm_dec(tm, le64_to_cpu(v_le));
+}
+
+static int le64_equal(void *context, const void *value1_le, const void *value2_le)
+{
+ __le64 v1_le, v2_le;
+
+ memcpy(&v1_le, value1_le, sizeof(v1_le));
+ memcpy(&v2_le, value2_le, sizeof(v2_le));
+ return v1_le == v2_le;
+}
+
+void init_le64_type(struct dm_transaction_manager *tm,
+ struct dm_btree_value_type *vt)
+{
+ vt->context = tm;
+ vt->size = sizeof(__le64);
+ vt->inc = le64_inc;
+ vt->dec = le64_dec;
+ vt->equal = le64_equal;
+}
struct btree_node *n;
struct dm_btree_value_type le64_type;
- le64_type.context = NULL;
- le64_type.size = sizeof(__le64);
- le64_type.inc = NULL;
- le64_type.dec = NULL;
- le64_type.equal = NULL;
-
+ init_le64_type(info->tm, &le64_type);
init_shadow_spine(&spine, info);
for (level = 0; level < (info->levels - 1); level++) {
{
int i;
+ if (!gpmc_base)
+ return;
+
gpmc_context.sysconfig = gpmc_read_reg(GPMC_SYSCONFIG);
gpmc_context.irqenable = gpmc_read_reg(GPMC_IRQENABLE);
gpmc_context.timeout_ctrl = gpmc_read_reg(GPMC_TIMEOUT_CONTROL);
{
int i;
+ if (!gpmc_base)
+ return;
+
gpmc_write_reg(GPMC_SYSCONFIG, gpmc_context.sysconfig);
gpmc_write_reg(GPMC_IRQENABLE, gpmc_context.irqenable);
gpmc_write_reg(GPMC_TIMEOUT_CONTROL, gpmc_context.timeout_ctrl);
slave ? slave->dev->name : "NULL");
if (!slave || !bond->send_peer_notif ||
+ !netif_carrier_ok(bond->dev) ||
test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state))
return false;
vp->rx_ring[i].addr = cpu_to_le32(pci_map_single(VORTEX_PCI(vp), skb->data, PKT_BUF_SZ, PCI_DMA_FROMDEVICE));
}
if (i != RX_RING_SIZE) {
- int j;
pr_emerg("%s: no memory for rx ring\n", dev->name);
- for (j = 0; j < i; j++) {
- if (vp->rx_skbuff[j]) {
- dev_kfree_skb(vp->rx_skbuff[j]);
- vp->rx_skbuff[j] = NULL;
- }
- }
retval = -ENOMEM;
- goto err_free_irq;
+ goto err_free_skb;
}
/* Wrap the ring. */
vp->rx_ring[i-1].next = cpu_to_le32(vp->rx_ring_dma);
if (!retval)
goto out;
-err_free_irq:
+err_free_skb:
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ if (vp->rx_skbuff[i]) {
+ dev_kfree_skb(vp->rx_skbuff[i]);
+ vp->rx_skbuff[i] = NULL;
+ }
+ }
free_irq(dev->irq, dev);
err:
if (vortex_debug > 1)
if (likely(skb)) {
(*pkts_compl)++;
(*bytes_compl) += skb->len;
+ dev_kfree_skb_any(skb);
}
- dev_kfree_skb_any(skb);
tx_buf->first_bd = 0;
tx_buf->skb = NULL;
offset += sizeof(u32);
data_buf += sizeof(u32);
written_so_far += sizeof(u32);
+
+ /* At end of each 4Kb page, release nvram lock to allow MFW
+ * chance to take it for its own use.
+ */
+ if ((cmd_flags & MCPR_NVM_COMMAND_LAST) &&
+ (written_so_far < buf_size)) {
+ DP(BNX2X_MSG_ETHTOOL | BNX2X_MSG_NVM,
+ "Releasing NVM lock after offset 0x%x\n",
+ (u32)(offset - sizeof(u32)));
+ bnx2x_release_nvram_lock(bp);
+ usleep_range(1000, 2000);
+ rc = bnx2x_acquire_nvram_lock(bp);
+ if (rc)
+ return rc;
+ }
+
cmd_flags = 0;
}
if (!next_cmpl->valid)
break;
}
+ packets++;
/* TODO: BNA_CQ_EF_LOCAL ? */
if (unlikely(flags & (BNA_CQ_EF_MAC_ERROR |
else
bnad_cq_setup_skb_frags(rcb, skb, sop_ci, nvecs, len);
- packets++;
rcb->rxq->rx_packets++;
rcb->rxq->rx_bytes += totlen;
ccb->bytes_per_intr += totlen;
config THUNDER_NIC_PF
tristate "Thunder Physical function driver"
depends on 64BIT
- default ARCH_THUNDER
select THUNDER_NIC_BGX
---help---
This driver supports Thunder's NIC physical function.
config THUNDER_NIC_VF
tristate "Thunder Virtual function driver"
depends on 64BIT
- default ARCH_THUNDER
---help---
This driver supports Thunder's NIC virtual function
config THUNDER_NIC_BGX
tristate "Thunder MAC interface driver (BGX)"
depends on 64BIT
- default ARCH_THUNDER
---help---
This driver supports programming and controlling of MAC
interface from NIC physical function driver.
EXT_MEM1_SIZE_G(size));
}
} else {
- if (i & EXT_MEM_ENABLE_F)
+ if (i & EXT_MEM_ENABLE_F) {
size = t4_read_reg(adap, MA_EXT_MEMORY_BAR_A);
add_debugfs_mem(adap, "mc", MEM_MC,
EXT_MEM_SIZE_G(size));
+ }
}
de = debugfs_create_file_size("flash", S_IRUSR, adap->debugfs_root, adap,
BE_IF_FLAGS_VLAN_PROMISCUOUS |\
BE_IF_FLAGS_MCAST_PROMISCUOUS)
+#define BE_IF_EN_FLAGS (BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PASS_L3L4_ERRORS |\
+ BE_IF_FLAGS_MULTICAST | BE_IF_FLAGS_UNTAGGED)
+
+#define BE_IF_ALL_FILT_FLAGS (BE_IF_EN_FLAGS | BE_IF_FLAGS_ALL_PROMISCUOUS)
+
/* An RX interface is an object with one or more MAC addresses and
* filtering capabilities. */
struct be_cmd_req_if_create {
if (ether_addr_equal(addr->sa_data, netdev->dev_addr))
return 0;
+ /* if device is not running, copy MAC to netdev->dev_addr */
+ if (!netif_running(netdev))
+ goto done;
+
/* The PMAC_ADD cmd may fail if the VF doesn't have FILTMGMT
* privilege or if PF did not provision the new MAC address.
* On BE3, this cmd will always fail if the VF doesn't have the
status = -EPERM;
goto err;
}
-
- memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
- dev_info(dev, "MAC address changed to %pM\n", mac);
+done:
+ ether_addr_copy(netdev->dev_addr, addr->sa_data);
+ dev_info(dev, "MAC address changed to %pM\n", addr->sa_data);
return 0;
err:
dev_warn(dev, "MAC address change to %pM failed\n", addr->sa_data);
be_eq_notify(eqo->adapter, eqo->q.id, false, true, num, 0);
}
-static void be_rx_cq_clean(struct be_rx_obj *rxo)
+/* Free posted rx buffers that were not used */
+static void be_rxq_clean(struct be_rx_obj *rxo)
{
- struct be_rx_page_info *page_info;
struct be_queue_info *rxq = &rxo->q;
+ struct be_rx_page_info *page_info;
+
+ while (atomic_read(&rxq->used) > 0) {
+ page_info = get_rx_page_info(rxo);
+ put_page(page_info->page);
+ memset(page_info, 0, sizeof(*page_info));
+ }
+ BUG_ON(atomic_read(&rxq->used));
+ rxq->tail = 0;
+ rxq->head = 0;
+}
+
+static void be_rx_cq_clean(struct be_rx_obj *rxo)
+{
struct be_queue_info *rx_cq = &rxo->cq;
struct be_rx_compl_info *rxcp;
struct be_adapter *adapter = rxo->adapter;
/* After cleanup, leave the CQ in unarmed state */
be_cq_notify(adapter, rx_cq->id, false, 0);
-
- /* Then free posted rx buffers that were not used */
- while (atomic_read(&rxq->used) > 0) {
- page_info = get_rx_page_info(rxo);
- put_page(page_info->page);
- memset(page_info, 0, sizeof(*page_info));
- }
- BUG_ON(atomic_read(&rxq->used));
- rxq->tail = 0;
- rxq->head = 0;
}
static void be_tx_compl_clean(struct be_adapter *adapter)
be_cmd_q_destroy(adapter, &eqo->q, QTYPE_EQ);
napi_hash_del(&eqo->napi);
netif_napi_del(&eqo->napi);
+ free_cpumask_var(eqo->affinity_mask);
}
- free_cpumask_var(eqo->affinity_mask);
be_queue_free(adapter, &eqo->q);
}
}
for_all_evt_queues(adapter, eqo, i) {
int numa_node = dev_to_node(&adapter->pdev->dev);
- if (!zalloc_cpumask_var(&eqo->affinity_mask, GFP_KERNEL))
- return -ENOMEM;
- cpumask_set_cpu(cpumask_local_spread(i, numa_node),
- eqo->affinity_mask);
- netif_napi_add(adapter->netdev, &eqo->napi, be_poll,
- BE_NAPI_WEIGHT);
- napi_hash_add(&eqo->napi);
+
aic = &adapter->aic_obj[i];
eqo->adapter = adapter;
eqo->idx = i;
rc = be_cmd_eq_create(adapter, eqo);
if (rc)
return rc;
+
+ if (!zalloc_cpumask_var(&eqo->affinity_mask, GFP_KERNEL))
+ return -ENOMEM;
+ cpumask_set_cpu(cpumask_local_spread(i, numa_node),
+ eqo->affinity_mask);
+ netif_napi_add(adapter->netdev, &eqo->napi, be_poll,
+ BE_NAPI_WEIGHT);
+ napi_hash_add(&eqo->napi);
}
return 0;
}
for_all_rx_queues(adapter, rxo, i) {
q = &rxo->q;
if (q->created) {
+ /* If RXQs are destroyed while in an "out of buffer"
+ * state, there is a possibility of an HW stall on
+ * Lancer. So, post 64 buffers to each queue to relieve
+ * the "out of buffer" condition.
+ * Make sure there's space in the RXQ before posting.
+ */
+ if (lancer_chip(adapter)) {
+ be_rx_cq_clean(rxo);
+ if (atomic_read(&q->used) == 0)
+ be_post_rx_frags(rxo, GFP_KERNEL,
+ MAX_RX_POST);
+ }
+
be_cmd_rxq_destroy(adapter, q);
be_rx_cq_clean(rxo);
+ be_rxq_clean(rxo);
}
be_queue_free(adapter, q);
}
}
+static void be_disable_if_filters(struct be_adapter *adapter)
+{
+ be_cmd_pmac_del(adapter, adapter->if_handle,
+ adapter->pmac_id[0], 0);
+
+ be_clear_uc_list(adapter);
+
+ /* The IFACE flags are enabled in the open path and cleared
+ * in the close path. When a VF gets detached from the host and
+ * assigned to a VM the following happens:
+ * - VF's IFACE flags get cleared in the detach path
+ * - IFACE create is issued by the VF in the attach path
+ * Due to a bug in the BE3/Skyhawk-R FW
+ * (Lancer FW doesn't have the bug), the IFACE capability flags
+ * specified along with the IFACE create cmd issued by a VF are not
+ * honoured by FW. As a consequence, if a *new* driver
+ * (that enables/disables IFACE flags in open/close)
+ * is loaded in the host and an *old* driver is * used by a VM/VF,
+ * the IFACE gets created *without* the needed flags.
+ * To avoid this, disable RX-filter flags only for Lancer.
+ */
+ if (lancer_chip(adapter)) {
+ be_cmd_rx_filter(adapter, BE_IF_ALL_FILT_FLAGS, OFF);
+ adapter->if_flags &= ~BE_IF_ALL_FILT_FLAGS;
+ }
+}
+
static int be_close(struct net_device *netdev)
{
struct be_adapter *adapter = netdev_priv(netdev);
if (!(adapter->flags & BE_FLAGS_SETUP_DONE))
return 0;
+ be_disable_if_filters(adapter);
+
be_roce_dev_close(adapter);
if (adapter->flags & BE_FLAGS_NAPI_ENABLED) {
be_tx_compl_clean(adapter);
be_rx_qs_destroy(adapter);
- be_clear_uc_list(adapter);
for_all_evt_queues(adapter, eqo, i) {
if (msix_enabled(adapter))
return 0;
}
+static int be_enable_if_filters(struct be_adapter *adapter)
+{
+ int status;
+
+ status = be_cmd_rx_filter(adapter, BE_IF_EN_FLAGS, ON);
+ if (status)
+ return status;
+
+ /* For BE3 VFs, the PF programs the initial MAC address */
+ if (!(BEx_chip(adapter) && be_virtfn(adapter))) {
+ status = be_cmd_pmac_add(adapter, adapter->netdev->dev_addr,
+ adapter->if_handle,
+ &adapter->pmac_id[0], 0);
+ if (status)
+ return status;
+ }
+
+ if (adapter->vlans_added)
+ be_vid_config(adapter);
+
+ be_set_rx_mode(adapter->netdev);
+
+ return 0;
+}
+
static int be_open(struct net_device *netdev)
{
struct be_adapter *adapter = netdev_priv(netdev);
if (status)
goto err;
+ status = be_enable_if_filters(adapter);
+ if (status)
+ goto err;
+
status = be_irq_register(adapter);
if (status)
goto err;
}
}
-static void be_mac_clear(struct be_adapter *adapter)
-{
- if (adapter->pmac_id) {
- be_cmd_pmac_del(adapter, adapter->if_handle,
- adapter->pmac_id[0], 0);
- kfree(adapter->pmac_id);
- adapter->pmac_id = NULL;
- }
-}
-
#ifdef CONFIG_BE2NET_VXLAN
static void be_disable_vxlan_offloads(struct be_adapter *adapter)
{
#ifdef CONFIG_BE2NET_VXLAN
be_disable_vxlan_offloads(adapter);
#endif
- /* delete the primary mac along with the uc-mac list */
- be_mac_clear(adapter);
+ kfree(adapter->pmac_id);
+ adapter->pmac_id = NULL;
be_cmd_if_destroy(adapter, adapter->if_handle, 0);
return 0;
}
-static int be_if_create(struct be_adapter *adapter, u32 *if_handle,
- u32 cap_flags, u32 vf)
-{
- u32 en_flags;
-
- en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
- BE_IF_FLAGS_MULTICAST | BE_IF_FLAGS_PASS_L3L4_ERRORS |
- BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS;
-
- en_flags &= cap_flags;
-
- return be_cmd_if_create(adapter, cap_flags, en_flags, if_handle, vf);
-}
-
static int be_vfs_if_create(struct be_adapter *adapter)
{
struct be_resources res = {0};
+ u32 cap_flags, en_flags, vf;
struct be_vf_cfg *vf_cfg;
- u32 cap_flags, vf;
int status;
/* If a FW profile exists, then cap_flags are updated */
}
}
- status = be_if_create(adapter, &vf_cfg->if_handle,
- cap_flags, vf + 1);
+ en_flags = cap_flags & (BE_IF_FLAGS_UNTAGGED |
+ BE_IF_FLAGS_BROADCAST |
+ BE_IF_FLAGS_MULTICAST |
+ BE_IF_FLAGS_PASS_L3L4_ERRORS);
+ status = be_cmd_if_create(adapter, cap_flags, en_flags,
+ &vf_cfg->if_handle, vf + 1);
if (status)
return status;
}
memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
- } else {
- /* Maybe the HW was reset; dev_addr must be re-programmed */
- memcpy(mac, adapter->netdev->dev_addr, ETH_ALEN);
}
- /* For BE3-R VFs, the PF programs the initial MAC address */
- if (!(BEx_chip(adapter) && be_virtfn(adapter)))
- be_cmd_pmac_add(adapter, mac, adapter->if_handle,
- &adapter->pmac_id[0], 0);
return 0;
}
static int be_setup(struct be_adapter *adapter)
{
struct device *dev = &adapter->pdev->dev;
+ u32 en_flags;
int status;
status = be_func_init(adapter);
if (status)
goto err;
- status = be_if_create(adapter, &adapter->if_handle,
- be_if_cap_flags(adapter), 0);
+ /* will enable all the needed filter flags in be_open() */
+ en_flags = BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS;
+ en_flags = en_flags & be_if_cap_flags(adapter);
+ status = be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags,
+ &adapter->if_handle, 0);
if (status)
goto err;
dev_err(dev, "Please upgrade firmware to version >= 4.0\n");
}
- if (adapter->vlans_added)
- be_vid_config(adapter);
-
- be_set_rx_mode(adapter->netdev);
-
status = be_cmd_set_flow_control(adapter, adapter->tx_fc,
adapter->rx_fc);
if (status)
pm_runtime_set_autosuspend_delay(&pdev->dev, FEC_MDIO_PM_TIMEOUT);
pm_runtime_use_autosuspend(&pdev->dev);
+ pm_runtime_get_noresume(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
frag = skb_shinfo(skb)->frags;
while (nr_frags) {
CBDC_SC(bdp,
- BD_ENET_TX_STATS | BD_ENET_TX_LAST | BD_ENET_TX_TC);
+ BD_ENET_TX_STATS | BD_ENET_TX_INTR | BD_ENET_TX_LAST |
+ BD_ENET_TX_TC);
CBDS_SC(bdp, BD_ENET_TX_READY);
if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0)
}
#define FEC_NAPI_RX_EVENT_MSK (FEC_ENET_RXF | FEC_ENET_RXB)
-#define FEC_NAPI_TX_EVENT_MSK (FEC_ENET_TXF | FEC_ENET_TXB)
+#define FEC_NAPI_TX_EVENT_MSK (FEC_ENET_TXF)
#define FEC_RX_EVENT (FEC_ENET_RXF)
#define FEC_TX_EVENT (FEC_ENET_TXF)
#define FEC_ERR_EVENT_MSK (FEC_ENET_HBERR | FEC_ENET_BABR | \
return 0;
}
-static int gfar_comp_asc(const void *a, const void *b)
-{
- return memcmp(a, b, 4);
-}
-
-static int gfar_comp_desc(const void *a, const void *b)
-{
- return -memcmp(a, b, 4);
-}
-
-static void gfar_swap(void *a, void *b, int size)
-{
- u32 *_a = a;
- u32 *_b = b;
-
- swap(_a[0], _b[0]);
- swap(_a[1], _b[1]);
- swap(_a[2], _b[2]);
- swap(_a[3], _b[3]);
-}
-
/* Write a mask to filer cache */
static void gfar_set_mask(u32 mask, struct filer_table *tab)
{
return 0;
}
-/* Copy size filer entries */
-static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0],
- struct gfar_filer_entry src[0], s32 size)
-{
- while (size > 0) {
- size--;
- dst[size].ctrl = src[size].ctrl;
- dst[size].prop = src[size].prop;
- }
-}
-
-/* Delete the contents of the filer-table between start and end
- * and collapse them
- */
-static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab)
-{
- int length;
-
- if (end > MAX_FILER_CACHE_IDX || end < begin)
- return -EINVAL;
-
- end++;
- length = end - begin;
-
- /* Copy */
- while (end < tab->index) {
- tab->fe[begin].ctrl = tab->fe[end].ctrl;
- tab->fe[begin++].prop = tab->fe[end++].prop;
-
- }
- /* Fill up with don't cares */
- while (begin < tab->index) {
- tab->fe[begin].ctrl = 0x60;
- tab->fe[begin].prop = 0xFFFFFFFF;
- begin++;
- }
-
- tab->index -= length;
- return 0;
-}
-
-/* Make space on the wanted location */
-static int gfar_expand_filer_entries(u32 begin, u32 length,
- struct filer_table *tab)
-{
- if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX ||
- begin > MAX_FILER_CACHE_IDX)
- return -EINVAL;
-
- gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]),
- tab->index - length + 1);
-
- tab->index += length;
- return 0;
-}
-
-static int gfar_get_next_cluster_start(int start, struct filer_table *tab)
-{
- for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
- start++) {
- if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
- (RQFCR_AND | RQFCR_CLE))
- return start;
- }
- return -1;
-}
-
-static int gfar_get_next_cluster_end(int start, struct filer_table *tab)
-{
- for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
- start++) {
- if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
- (RQFCR_CLE))
- return start;
- }
- return -1;
-}
-
-/* Uses hardwares clustering option to reduce
- * the number of filer table entries
- */
-static void gfar_cluster_filer(struct filer_table *tab)
-{
- s32 i = -1, j, iend, jend;
-
- while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) {
- j = i;
- while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) {
- /* The cluster entries self and the previous one
- * (a mask) must be identical!
- */
- if (tab->fe[i].ctrl != tab->fe[j].ctrl)
- break;
- if (tab->fe[i].prop != tab->fe[j].prop)
- break;
- if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl)
- break;
- if (tab->fe[i - 1].prop != tab->fe[j - 1].prop)
- break;
- iend = gfar_get_next_cluster_end(i, tab);
- jend = gfar_get_next_cluster_end(j, tab);
- if (jend == -1 || iend == -1)
- break;
-
- /* First we make some free space, where our cluster
- * element should be. Then we copy it there and finally
- * delete in from its old location.
- */
- if (gfar_expand_filer_entries(iend, (jend - j), tab) ==
- -EINVAL)
- break;
-
- gfar_copy_filer_entries(&(tab->fe[iend + 1]),
- &(tab->fe[jend + 1]), jend - j);
-
- if (gfar_trim_filer_entries(jend - 1,
- jend + (jend - j),
- tab) == -EINVAL)
- return;
-
- /* Mask out cluster bit */
- tab->fe[iend].ctrl &= ~(RQFCR_CLE);
- }
- }
-}
-
-/* Swaps the masked bits of a1<>a2 and b1<>b2 */
-static void gfar_swap_bits(struct gfar_filer_entry *a1,
- struct gfar_filer_entry *a2,
- struct gfar_filer_entry *b1,
- struct gfar_filer_entry *b2, u32 mask)
-{
- u32 temp[4];
- temp[0] = a1->ctrl & mask;
- temp[1] = a2->ctrl & mask;
- temp[2] = b1->ctrl & mask;
- temp[3] = b2->ctrl & mask;
-
- a1->ctrl &= ~mask;
- a2->ctrl &= ~mask;
- b1->ctrl &= ~mask;
- b2->ctrl &= ~mask;
-
- a1->ctrl |= temp[1];
- a2->ctrl |= temp[0];
- b1->ctrl |= temp[3];
- b2->ctrl |= temp[2];
-}
-
-/* Generate a list consisting of masks values with their start and
- * end of validity and block as indicator for parts belonging
- * together (glued by ANDs) in mask_table
- */
-static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table,
- struct filer_table *tab)
-{
- u32 i, and_index = 0, block_index = 1;
-
- for (i = 0; i < tab->index; i++) {
-
- /* LSByte of control = 0 sets a mask */
- if (!(tab->fe[i].ctrl & 0xF)) {
- mask_table[and_index].mask = tab->fe[i].prop;
- mask_table[and_index].start = i;
- mask_table[and_index].block = block_index;
- if (and_index >= 1)
- mask_table[and_index - 1].end = i - 1;
- and_index++;
- }
- /* cluster starts and ends will be separated because they should
- * hold their position
- */
- if (tab->fe[i].ctrl & RQFCR_CLE)
- block_index++;
- /* A not set AND indicates the end of a depended block */
- if (!(tab->fe[i].ctrl & RQFCR_AND))
- block_index++;
- }
-
- mask_table[and_index - 1].end = i - 1;
-
- return and_index;
-}
-
-/* Sorts the entries of mask_table by the values of the masks.
- * Important: The 0xFF80 flags of the first and last entry of a
- * block must hold their position (which queue, CLusterEnable, ReJEct,
- * AND)
- */
-static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table,
- struct filer_table *temp_table, u32 and_index)
-{
- /* Pointer to compare function (_asc or _desc) */
- int (*gfar_comp)(const void *, const void *);
-
- u32 i, size = 0, start = 0, prev = 1;
- u32 old_first, old_last, new_first, new_last;
-
- gfar_comp = &gfar_comp_desc;
-
- for (i = 0; i < and_index; i++) {
- if (prev != mask_table[i].block) {
- old_first = mask_table[start].start + 1;
- old_last = mask_table[i - 1].end;
- sort(mask_table + start, size,
- sizeof(struct gfar_mask_entry),
- gfar_comp, &gfar_swap);
-
- /* Toggle order for every block. This makes the
- * thing more efficient!
- */
- if (gfar_comp == gfar_comp_desc)
- gfar_comp = &gfar_comp_asc;
- else
- gfar_comp = &gfar_comp_desc;
-
- new_first = mask_table[start].start + 1;
- new_last = mask_table[i - 1].end;
-
- gfar_swap_bits(&temp_table->fe[new_first],
- &temp_table->fe[old_first],
- &temp_table->fe[new_last],
- &temp_table->fe[old_last],
- RQFCR_QUEUE | RQFCR_CLE |
- RQFCR_RJE | RQFCR_AND);
-
- start = i;
- size = 0;
- }
- size++;
- prev = mask_table[i].block;
- }
-}
-
-/* Reduces the number of masks needed in the filer table to save entries
- * This is done by sorting the masks of a depended block. A depended block is
- * identified by gluing ANDs or CLE. The sorting order toggles after every
- * block. Of course entries in scope of a mask must change their location with
- * it.
- */
-static int gfar_optimize_filer_masks(struct filer_table *tab)
-{
- struct filer_table *temp_table;
- struct gfar_mask_entry *mask_table;
-
- u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0;
- s32 ret = 0;
-
- /* We need a copy of the filer table because
- * we want to change its order
- */
- temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL);
- if (temp_table == NULL)
- return -ENOMEM;
-
- mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1,
- sizeof(struct gfar_mask_entry), GFP_KERNEL);
-
- if (mask_table == NULL) {
- ret = -ENOMEM;
- goto end;
- }
-
- and_index = gfar_generate_mask_table(mask_table, tab);
-
- gfar_sort_mask_table(mask_table, temp_table, and_index);
-
- /* Now we can copy the data from our duplicated filer table to
- * the real one in the order the mask table says
- */
- for (i = 0; i < and_index; i++) {
- size = mask_table[i].end - mask_table[i].start + 1;
- gfar_copy_filer_entries(&(tab->fe[j]),
- &(temp_table->fe[mask_table[i].start]), size);
- j += size;
- }
-
- /* And finally we just have to check for duplicated masks and drop the
- * second ones
- */
- for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
- if (tab->fe[i].ctrl == 0x80) {
- previous_mask = i++;
- break;
- }
- }
- for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
- if (tab->fe[i].ctrl == 0x80) {
- if (tab->fe[i].prop == tab->fe[previous_mask].prop) {
- /* Two identical ones found!
- * So drop the second one!
- */
- gfar_trim_filer_entries(i, i, tab);
- } else
- /* Not identical! */
- previous_mask = i;
- }
- }
-
- kfree(mask_table);
-end: kfree(temp_table);
- return ret;
-}
-
/* Write the bit-pattern from software's buffer to hardware registers */
static int gfar_write_filer_table(struct gfar_private *priv,
struct filer_table *tab)
return -EBUSY;
/* Fill regular entries */
- for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].prop);
- i++)
+ for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
/* Fill the rest with fall-troughs */
- for (; i < MAX_FILER_IDX - 1; i++)
+ for (; i < MAX_FILER_IDX; i++)
gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
/* Last entry must be default accept
* because that's what people expect
{
struct ethtool_flow_spec_container *j;
struct filer_table *tab;
- s32 i = 0;
s32 ret = 0;
/* So index is set to zero, too! */
}
}
- i = tab->index;
-
- /* Optimizations to save entries */
- gfar_cluster_filer(tab);
- gfar_optimize_filer_masks(tab);
-
- pr_debug("\tSummary:\n"
- "\tData on hardware: %d\n"
- "\tCompression rate: %d%%\n",
- tab->index, 100 - (100 * tab->index) / i);
-
/* Write everything to hardware */
ret = gfar_write_filer_table(priv, tab);
if (ret == -EBUSY) {
}
process:
+ priv->rx_list.count++;
ret = gfar_process_filer_changes(priv);
if (ret)
goto clean_list;
- priv->rx_list.count++;
return ret;
clean_list:
+ priv->rx_list.count--;
list_del(&temp->list);
clean_mem:
kfree(temp);
#include <linux/of_address.h>
#include <linux/phy.h>
#include <linux/clk.h>
+#include <linux/hrtimer.h>
+#include <linux/ktime.h>
#include <uapi/linux/ppp_defs.h>
#include <net/ip.h>
#include <net/ipv6.h>
/* Coalescing */
#define MVPP2_TXDONE_COAL_PKTS_THRESH 15
+#define MVPP2_TXDONE_HRTIMER_PERIOD_NS 1000000UL
#define MVPP2_RX_COAL_PKTS 32
#define MVPP2_RX_COAL_USEC 100
u64 tx_bytes;
};
+/* Per-CPU port control */
+struct mvpp2_port_pcpu {
+ struct hrtimer tx_done_timer;
+ bool timer_scheduled;
+ /* Tasklet for egress finalization */
+ struct tasklet_struct tx_done_tasklet;
+};
+
struct mvpp2_port {
u8 id;
u32 pending_cause_rx;
struct napi_struct napi;
+ /* Per-CPU port control */
+ struct mvpp2_port_pcpu __percpu *pcpu;
+
/* Flags */
unsigned long flags;
/* Array of transmitted skb */
struct sk_buff **tx_skb;
+ /* Array of transmitted buffers' physical addresses */
+ dma_addr_t *tx_buffs;
+
/* Index of last TX DMA descriptor that was inserted */
int txq_put_index;
/* Occupied buffers indicator */
atomic_t in_use;
int in_use_thresh;
-
- spinlock_t lock;
};
struct mvpp2_buff_hdr {
}
static void mvpp2_txq_inc_put(struct mvpp2_txq_pcpu *txq_pcpu,
- struct sk_buff *skb)
+ struct sk_buff *skb,
+ struct mvpp2_tx_desc *tx_desc)
{
txq_pcpu->tx_skb[txq_pcpu->txq_put_index] = skb;
+ if (skb)
+ txq_pcpu->tx_buffs[txq_pcpu->txq_put_index] =
+ tx_desc->buf_phys_addr;
txq_pcpu->txq_put_index++;
if (txq_pcpu->txq_put_index == txq_pcpu->size)
txq_pcpu->txq_put_index = 0;
bm_pool->pkt_size = 0;
bm_pool->buf_num = 0;
atomic_set(&bm_pool->in_use, 0);
- spin_lock_init(&bm_pool->lock);
return 0;
}
mvpp2_bm_pool_use(struct mvpp2_port *port, int pool, enum mvpp2_bm_type type,
int pkt_size)
{
- unsigned long flags = 0;
struct mvpp2_bm_pool *new_pool = &port->priv->bm_pools[pool];
int num;
return NULL;
}
- spin_lock_irqsave(&new_pool->lock, flags);
-
if (new_pool->type == MVPP2_BM_FREE)
new_pool->type = type;
if (num != pkts_num) {
WARN(1, "pool %d: %d of %d allocated\n",
new_pool->id, num, pkts_num);
- /* We need to undo the bufs_add() allocations */
- spin_unlock_irqrestore(&new_pool->lock, flags);
return NULL;
}
}
mvpp2_bm_pool_bufsize_set(port->priv, new_pool,
MVPP2_RX_BUF_SIZE(new_pool->pkt_size));
- spin_unlock_irqrestore(&new_pool->lock, flags);
-
return new_pool;
}
/* Initialize pools for swf */
static int mvpp2_swf_bm_pool_init(struct mvpp2_port *port)
{
- unsigned long flags = 0;
int rxq;
if (!port->pool_long) {
if (!port->pool_long)
return -ENOMEM;
- spin_lock_irqsave(&port->pool_long->lock, flags);
port->pool_long->port_map |= (1 << port->id);
- spin_unlock_irqrestore(&port->pool_long->lock, flags);
for (rxq = 0; rxq < rxq_number; rxq++)
mvpp2_rxq_long_pool_set(port, rxq, port->pool_long->id);
if (!port->pool_short)
return -ENOMEM;
- spin_lock_irqsave(&port->pool_short->lock, flags);
port->pool_short->port_map |= (1 << port->id);
- spin_unlock_irqrestore(&port->pool_short->lock, flags);
for (rxq = 0; rxq < rxq_number; rxq++)
mvpp2_rxq_short_pool_set(port, rxq,
mvpp2_write(port->priv, MVPP2_ISR_RX_TX_MASK_REG(port->id),
(MVPP2_CAUSE_MISC_SUM_MASK |
- MVPP2_CAUSE_TXQ_OCCUP_DESC_ALL_MASK |
MVPP2_CAUSE_RXQ_OCCUP_DESC_ALL_MASK));
}
rxq->time_coal = usec;
}
-/* Set threshold for TX_DONE pkts coalescing */
-static void mvpp2_tx_done_pkts_coal_set(void *arg)
-{
- struct mvpp2_port *port = arg;
- int queue;
- u32 val;
-
- for (queue = 0; queue < txq_number; queue++) {
- struct mvpp2_tx_queue *txq = port->txqs[queue];
-
- val = (txq->done_pkts_coal << MVPP2_TRANSMITTED_THRESH_OFFSET) &
- MVPP2_TRANSMITTED_THRESH_MASK;
- mvpp2_write(port->priv, MVPP2_TXQ_NUM_REG, txq->id);
- mvpp2_write(port->priv, MVPP2_TXQ_THRESH_REG, val);
- }
-}
-
/* Free Tx queue skbuffs */
static void mvpp2_txq_bufs_free(struct mvpp2_port *port,
struct mvpp2_tx_queue *txq,
int i;
for (i = 0; i < num; i++) {
- struct mvpp2_tx_desc *tx_desc = txq->descs +
- txq_pcpu->txq_get_index;
+ dma_addr_t buf_phys_addr =
+ txq_pcpu->tx_buffs[txq_pcpu->txq_get_index];
struct sk_buff *skb = txq_pcpu->tx_skb[txq_pcpu->txq_get_index];
mvpp2_txq_inc_get(txq_pcpu);
if (!skb)
continue;
- dma_unmap_single(port->dev->dev.parent, tx_desc->buf_phys_addr,
- tx_desc->data_size, DMA_TO_DEVICE);
+ dma_unmap_single(port->dev->dev.parent, buf_phys_addr,
+ skb_headlen(skb), DMA_TO_DEVICE);
dev_kfree_skb_any(skb);
}
}
static inline struct mvpp2_tx_queue *mvpp2_get_tx_queue(struct mvpp2_port *port,
u32 cause)
{
- int queue = fls(cause >> 16) - 1;
+ int queue = fls(cause) - 1;
return port->txqs[queue];
}
netif_tx_wake_queue(nq);
}
+static unsigned int mvpp2_tx_done(struct mvpp2_port *port, u32 cause)
+{
+ struct mvpp2_tx_queue *txq;
+ struct mvpp2_txq_pcpu *txq_pcpu;
+ unsigned int tx_todo = 0;
+
+ while (cause) {
+ txq = mvpp2_get_tx_queue(port, cause);
+ if (!txq)
+ break;
+
+ txq_pcpu = this_cpu_ptr(txq->pcpu);
+
+ if (txq_pcpu->count) {
+ mvpp2_txq_done(port, txq, txq_pcpu);
+ tx_todo += txq_pcpu->count;
+ }
+
+ cause &= ~(1 << txq->log_id);
+ }
+ return tx_todo;
+}
+
/* Rx/Tx queue initialization/cleanup methods */
/* Allocate and initialize descriptors for aggr TXQ */
txq_pcpu->tx_skb = kmalloc(txq_pcpu->size *
sizeof(*txq_pcpu->tx_skb),
GFP_KERNEL);
- if (!txq_pcpu->tx_skb) {
- dma_free_coherent(port->dev->dev.parent,
- txq->size * MVPP2_DESC_ALIGNED_SIZE,
- txq->descs, txq->descs_phys);
- return -ENOMEM;
- }
+ if (!txq_pcpu->tx_skb)
+ goto error;
+
+ txq_pcpu->tx_buffs = kmalloc(txq_pcpu->size *
+ sizeof(dma_addr_t), GFP_KERNEL);
+ if (!txq_pcpu->tx_buffs)
+ goto error;
txq_pcpu->count = 0;
txq_pcpu->reserved_num = 0;
}
return 0;
+
+error:
+ for_each_present_cpu(cpu) {
+ txq_pcpu = per_cpu_ptr(txq->pcpu, cpu);
+ kfree(txq_pcpu->tx_skb);
+ kfree(txq_pcpu->tx_buffs);
+ }
+
+ dma_free_coherent(port->dev->dev.parent,
+ txq->size * MVPP2_DESC_ALIGNED_SIZE,
+ txq->descs, txq->descs_phys);
+
+ return -ENOMEM;
}
/* Free allocated TXQ resources */
for_each_present_cpu(cpu) {
txq_pcpu = per_cpu_ptr(txq->pcpu, cpu);
kfree(txq_pcpu->tx_skb);
+ kfree(txq_pcpu->tx_buffs);
}
if (txq->descs)
goto err_cleanup;
}
- on_each_cpu(mvpp2_tx_done_pkts_coal_set, port, 1);
on_each_cpu(mvpp2_txq_sent_counter_clear, port, 1);
return 0;
}
}
+static void mvpp2_timer_set(struct mvpp2_port_pcpu *port_pcpu)
+{
+ ktime_t interval;
+
+ if (!port_pcpu->timer_scheduled) {
+ port_pcpu->timer_scheduled = true;
+ interval = ktime_set(0, MVPP2_TXDONE_HRTIMER_PERIOD_NS);
+ hrtimer_start(&port_pcpu->tx_done_timer, interval,
+ HRTIMER_MODE_REL_PINNED);
+ }
+}
+
+static void mvpp2_tx_proc_cb(unsigned long data)
+{
+ struct net_device *dev = (struct net_device *)data;
+ struct mvpp2_port *port = netdev_priv(dev);
+ struct mvpp2_port_pcpu *port_pcpu = this_cpu_ptr(port->pcpu);
+ unsigned int tx_todo, cause;
+
+ if (!netif_running(dev))
+ return;
+ port_pcpu->timer_scheduled = false;
+
+ /* Process all the Tx queues */
+ cause = (1 << txq_number) - 1;
+ tx_todo = mvpp2_tx_done(port, cause);
+
+ /* Set the timer in case not all the packets were processed */
+ if (tx_todo)
+ mvpp2_timer_set(port_pcpu);
+}
+
+static enum hrtimer_restart mvpp2_hr_timer_cb(struct hrtimer *timer)
+{
+ struct mvpp2_port_pcpu *port_pcpu = container_of(timer,
+ struct mvpp2_port_pcpu,
+ tx_done_timer);
+
+ tasklet_schedule(&port_pcpu->tx_done_tasklet);
+
+ return HRTIMER_NORESTART;
+}
+
/* Main RX/TX processing routines */
/* Display more error info */
if (i == (skb_shinfo(skb)->nr_frags - 1)) {
/* Last descriptor */
tx_desc->command = MVPP2_TXD_L_DESC;
- mvpp2_txq_inc_put(txq_pcpu, skb);
+ mvpp2_txq_inc_put(txq_pcpu, skb, tx_desc);
} else {
/* Descriptor in the middle: Not First, Not Last */
tx_desc->command = 0;
- mvpp2_txq_inc_put(txq_pcpu, NULL);
+ mvpp2_txq_inc_put(txq_pcpu, NULL, tx_desc);
}
}
/* First and Last descriptor */
tx_cmd |= MVPP2_TXD_F_DESC | MVPP2_TXD_L_DESC;
tx_desc->command = tx_cmd;
- mvpp2_txq_inc_put(txq_pcpu, skb);
+ mvpp2_txq_inc_put(txq_pcpu, skb, tx_desc);
} else {
/* First but not Last */
tx_cmd |= MVPP2_TXD_F_DESC | MVPP2_TXD_PADDING_DISABLE;
tx_desc->command = tx_cmd;
- mvpp2_txq_inc_put(txq_pcpu, NULL);
+ mvpp2_txq_inc_put(txq_pcpu, NULL, tx_desc);
/* Continue with other skb fragments */
if (mvpp2_tx_frag_process(port, skb, aggr_txq, txq)) {
dev_kfree_skb_any(skb);
}
+ /* Finalize TX processing */
+ if (txq_pcpu->count >= txq->done_pkts_coal)
+ mvpp2_txq_done(port, txq, txq_pcpu);
+
+ /* Set the timer in case not all frags were processed */
+ if (txq_pcpu->count <= frags && txq_pcpu->count > 0) {
+ struct mvpp2_port_pcpu *port_pcpu = this_cpu_ptr(port->pcpu);
+
+ mvpp2_timer_set(port_pcpu);
+ }
+
return NETDEV_TX_OK;
}
netdev_err(dev, "tx fifo underrun error\n");
}
-static void mvpp2_txq_done_percpu(void *arg)
+static int mvpp2_poll(struct napi_struct *napi, int budget)
{
- struct mvpp2_port *port = arg;
- u32 cause_rx_tx, cause_tx, cause_misc;
+ u32 cause_rx_tx, cause_rx, cause_misc;
+ int rx_done = 0;
+ struct mvpp2_port *port = netdev_priv(napi->dev);
/* Rx/Tx cause register
*
*/
cause_rx_tx = mvpp2_read(port->priv,
MVPP2_ISR_RX_TX_CAUSE_REG(port->id));
- cause_tx = cause_rx_tx & MVPP2_CAUSE_TXQ_OCCUP_DESC_ALL_MASK;
+ cause_rx_tx &= ~MVPP2_CAUSE_TXQ_OCCUP_DESC_ALL_MASK;
cause_misc = cause_rx_tx & MVPP2_CAUSE_MISC_SUM_MASK;
if (cause_misc) {
cause_rx_tx & ~MVPP2_CAUSE_MISC_SUM_MASK);
}
- /* Release TX descriptors */
- if (cause_tx) {
- struct mvpp2_tx_queue *txq = mvpp2_get_tx_queue(port, cause_tx);
- struct mvpp2_txq_pcpu *txq_pcpu = this_cpu_ptr(txq->pcpu);
-
- if (txq_pcpu->count)
- mvpp2_txq_done(port, txq, txq_pcpu);
- }
-}
-
-static int mvpp2_poll(struct napi_struct *napi, int budget)
-{
- u32 cause_rx_tx, cause_rx;
- int rx_done = 0;
- struct mvpp2_port *port = netdev_priv(napi->dev);
-
- on_each_cpu(mvpp2_txq_done_percpu, port, 1);
-
- cause_rx_tx = mvpp2_read(port->priv,
- MVPP2_ISR_RX_TX_CAUSE_REG(port->id));
cause_rx = cause_rx_tx & MVPP2_CAUSE_RXQ_OCCUP_DESC_ALL_MASK;
/* Process RX packets */
static int mvpp2_stop(struct net_device *dev)
{
struct mvpp2_port *port = netdev_priv(dev);
+ struct mvpp2_port_pcpu *port_pcpu;
+ int cpu;
mvpp2_stop_dev(port);
mvpp2_phy_disconnect(port);
on_each_cpu(mvpp2_interrupts_mask, port, 1);
free_irq(port->irq, port);
+ for_each_present_cpu(cpu) {
+ port_pcpu = per_cpu_ptr(port->pcpu, cpu);
+
+ hrtimer_cancel(&port_pcpu->tx_done_timer);
+ port_pcpu->timer_scheduled = false;
+ tasklet_kill(&port_pcpu->tx_done_tasklet);
+ }
mvpp2_cleanup_rxqs(port);
mvpp2_cleanup_txqs(port);
txq->done_pkts_coal = c->tx_max_coalesced_frames;
}
- on_each_cpu(mvpp2_tx_done_pkts_coal_set, port, 1);
return 0;
}
{
struct device_node *phy_node;
struct mvpp2_port *port;
+ struct mvpp2_port_pcpu *port_pcpu;
struct net_device *dev;
struct resource *res;
const char *dt_mac_addr;
int features;
int phy_mode;
int priv_common_regs_num = 2;
- int err, i;
+ int err, i, cpu;
dev = alloc_etherdev_mqs(sizeof(struct mvpp2_port), txq_number,
rxq_number);
}
mvpp2_port_power_up(port);
+ port->pcpu = alloc_percpu(struct mvpp2_port_pcpu);
+ if (!port->pcpu) {
+ err = -ENOMEM;
+ goto err_free_txq_pcpu;
+ }
+
+ for_each_present_cpu(cpu) {
+ port_pcpu = per_cpu_ptr(port->pcpu, cpu);
+
+ hrtimer_init(&port_pcpu->tx_done_timer, CLOCK_MONOTONIC,
+ HRTIMER_MODE_REL_PINNED);
+ port_pcpu->tx_done_timer.function = mvpp2_hr_timer_cb;
+ port_pcpu->timer_scheduled = false;
+
+ tasklet_init(&port_pcpu->tx_done_tasklet, mvpp2_tx_proc_cb,
+ (unsigned long)dev);
+ }
+
netif_napi_add(dev, &port->napi, mvpp2_poll, NAPI_POLL_WEIGHT);
features = NETIF_F_SG | NETIF_F_IP_CSUM;
dev->features = features | NETIF_F_RXCSUM;
err = register_netdev(dev);
if (err < 0) {
dev_err(&pdev->dev, "failed to register netdev\n");
- goto err_free_txq_pcpu;
+ goto err_free_port_pcpu;
}
netdev_info(dev, "Using %s mac address %pM\n", mac_from, dev->dev_addr);
priv->port_list[id] = port;
return 0;
+err_free_port_pcpu:
+ free_percpu(port->pcpu);
err_free_txq_pcpu:
for (i = 0; i < txq_number; i++)
free_percpu(port->txqs[i]->pcpu);
int i;
unregister_netdev(port->dev);
+ free_percpu(port->pcpu);
free_percpu(port->stats);
for (i = 0; i < txq_number; i++)
free_percpu(port->txqs[i]->pcpu);
/* disable cmdif checksum */
MLX5_SET(cmd_hca_cap, set_hca_cap, cmdif_checksum, 0);
+ MLX5_SET(cmd_hca_cap, set_hca_cap, log_uar_page_sz, PAGE_SHIFT - 12);
+
err = set_caps(dev, set_ctx, set_sz);
query_ex:
case RTL_GIGA_MAC_VER_46:
case RTL_GIGA_MAC_VER_47:
case RTL_GIGA_MAC_VER_48:
+ RTL_W32(RxConfig, RX128_INT_EN | RX_DMA_BURST | RX_EARLY_OFF);
+ break;
case RTL_GIGA_MAC_VER_49:
case RTL_GIGA_MAC_VER_50:
case RTL_GIGA_MAC_VER_51:
- RTL_W32(RxConfig, RX128_INT_EN | RX_DMA_BURST | RX_EARLY_OFF);
+ RTL_W32(RxConfig, RX128_INT_EN | RX_MULTI_EN | RX_DMA_BURST | RX_EARLY_OFF);
break;
default:
RTL_W32(RxConfig, RX128_INT_EN | RX_DMA_BURST);
rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE,
ROCKER_OP_FLAG_REMOVE);
unregister_netdev(rocker_port->dev);
+ free_netdev(rocker_port->dev);
}
kfree(rocker->ports);
}
#define NSS_COMMON_CLK_DIV_MASK 0x7f
#define NSS_COMMON_CLK_SRC_CTRL 0x14
-#define NSS_COMMON_CLK_SRC_CTRL_OFFSET(x) (1 << x)
+#define NSS_COMMON_CLK_SRC_CTRL_OFFSET(x) (x)
/* Mode is coded on 1 bit but is different depending on the MAC ID:
* MAC0: QSGMII=0 RGMII=1
* MAC1: QSGMII=0 SGMII=0 RGMII=1
/* Configure the clock src according to the mode */
regmap_read(gmac->nss_common, NSS_COMMON_CLK_SRC_CTRL, &val);
- val &= ~NSS_COMMON_CLK_SRC_CTRL_OFFSET(gmac->id);
+ val &= ~(1 << NSS_COMMON_CLK_SRC_CTRL_OFFSET(gmac->id));
switch (gmac->phy_mode) {
case PHY_INTERFACE_MODE_RGMII:
val |= NSS_COMMON_CLK_SRC_CTRL_RGMII(gmac->id) <<
struct list_head rxhook_list_head;
unsigned int rx_queue_id;
void *rx_fdq[KNAV_DMA_FDQ_PER_CHAN];
- u32 rx_buffer_sizes[KNAV_DMA_FDQ_PER_CHAN];
struct napi_struct rx_napi;
struct napi_struct tx_napi;
#define NETCP_SOP_OFFSET (NET_IP_ALIGN + NET_SKB_PAD)
#define NETCP_NAPI_WEIGHT 64
#define NETCP_TX_TIMEOUT (5 * HZ)
+#define NETCP_PACKET_SIZE (ETH_FRAME_LEN + ETH_FCS_LEN)
#define NETCP_MIN_PACKET_SIZE ETH_ZLEN
#define NETCP_MAX_MCAST_ADDR 16
if (likely(fdq == 0)) {
unsigned int primary_buf_len;
/* Allocate a primary receive queue entry */
- buf_len = netcp->rx_buffer_sizes[0] + NETCP_SOP_OFFSET;
+ buf_len = NETCP_PACKET_SIZE + NETCP_SOP_OFFSET;
primary_buf_len = SKB_DATA_ALIGN(buf_len) +
SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
- if (primary_buf_len <= PAGE_SIZE) {
- bufptr = netdev_alloc_frag(primary_buf_len);
- pad[1] = primary_buf_len;
- } else {
- bufptr = kmalloc(primary_buf_len, GFP_ATOMIC |
- GFP_DMA32 | __GFP_COLD);
- pad[1] = 0;
- }
+ bufptr = netdev_alloc_frag(primary_buf_len);
+ pad[1] = primary_buf_len;
if (unlikely(!bufptr)) {
- dev_warn_ratelimited(netcp->ndev_dev, "Primary RX buffer alloc failed\n");
+ dev_warn_ratelimited(netcp->ndev_dev,
+ "Primary RX buffer alloc failed\n");
goto fail;
}
dma = dma_map_single(netcp->dev, bufptr, buf_len,
DMA_TO_DEVICE);
+ if (unlikely(dma_mapping_error(netcp->dev, dma)))
+ goto fail;
+
pad[0] = (u32)bufptr;
} else {
/* Allocate a secondary receive queue entry */
- page = alloc_page(GFP_ATOMIC | GFP_DMA32 | __GFP_COLD);
+ page = alloc_page(GFP_ATOMIC | GFP_DMA | __GFP_COLD);
if (unlikely(!page)) {
dev_warn_ratelimited(netcp->ndev_dev, "Secondary page alloc failed\n");
goto fail;
/* Map the linear buffer */
dma_addr = dma_map_single(dev, skb->data, pkt_len, DMA_TO_DEVICE);
- if (unlikely(!dma_addr)) {
+ if (unlikely(dma_mapping_error(dev, dma_addr))) {
dev_err(netcp->ndev_dev, "Failed to map skb buffer\n");
return NULL;
}
knav_queue_disable_notify(netcp->rx_queue);
/* open Rx FDQs */
- for (i = 0; i < KNAV_DMA_FDQ_PER_CHAN &&
- netcp->rx_queue_depths[i] && netcp->rx_buffer_sizes[i]; ++i) {
+ for (i = 0; i < KNAV_DMA_FDQ_PER_CHAN && netcp->rx_queue_depths[i];
+ ++i) {
snprintf(name, sizeof(name), "rx-fdq-%s-%d", ndev->name, i);
netcp->rx_fdq[i] = knav_queue_open(name, KNAV_QUEUE_GP, 0);
if (IS_ERR_OR_NULL(netcp->rx_fdq[i])) {
netcp->rx_queue_depths[0] = 128;
}
- ret = of_property_read_u32_array(node_interface, "rx-buffer-size",
- netcp->rx_buffer_sizes,
- KNAV_DMA_FDQ_PER_CHAN);
- if (ret) {
- dev_err(dev, "missing \"rx-buffer-size\" parameter\n");
- netcp->rx_buffer_sizes[0] = 1536;
- }
-
ret = of_property_read_u32_array(node_interface, "rx-pool", temp, 2);
if (ret < 0) {
dev_err(dev, "missing \"rx-pool\" parameter\n");
dev->type = ARPHRD_AX25;
/* Perform the low-level AX25 initialization. */
- if ((err = ax_open(ax->dev))) {
+ err = ax_open(ax->dev);
+ if (err)
goto out_free_netdev;
- }
- if (register_netdev(dev))
+ err = register_netdev(dev);
+ if (err)
goto out_free_buffers;
/* after register_netdev() - because else printk smashes the kernel */
/* Do we support "hardware" checksums? */
if (virtio_has_feature(vdev, VIRTIO_NET_F_CSUM)) {
/* This opens up the world of extra features. */
- dev->hw_features |= NETIF_F_HW_CSUM|NETIF_F_SG|NETIF_F_FRAGLIST;
+ dev->hw_features |= NETIF_F_HW_CSUM | NETIF_F_SG;
if (csum)
- dev->features |= NETIF_F_HW_CSUM|NETIF_F_SG|NETIF_F_FRAGLIST;
+ dev->features |= NETIF_F_HW_CSUM | NETIF_F_SG;
if (virtio_has_feature(vdev, VIRTIO_NET_F_GSO)) {
dev->hw_features |= NETIF_F_TSO | NETIF_F_UFO
chan->netdev->base_addr = chan->cosa->datareg;
chan->netdev->irq = chan->cosa->irq;
chan->netdev->dma = chan->cosa->dma;
- if (register_hdlc_device(chan->netdev)) {
+ err = register_hdlc_device(chan->netdev);
+ if (err) {
netdev_warn(chan->netdev,
"register_hdlc_device() failed\n");
free_netdev(chan->netdev);
switch (phy->rev) {
case 6:
case 5:
- if (sprom->fem.ghz5.extpa_gain == 3)
+ if (sprom->fem.ghz2.extpa_gain == 3)
return b43_ntab_tx_gain_epa_rev3_hi_pwr_2g;
/* fall through */
case 4:
cmd->scan_priority =
iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6);
- if (iwl_mvm_scan_total_iterations(params) == 0)
+ if (iwl_mvm_scan_total_iterations(params) == 1)
cmd->ooc_priority =
iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6);
else
if (trans->cfg->device_family == IWL_DEVICE_FAMILY_7000)
iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG,
APMG_PCIDEV_STT_VAL_WAKE_ME);
- else if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
+ else if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
+ iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
+ CSR_RESET_LINK_PWR_MGMT_DISABLED);
iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_PREPARE |
CSR_HW_IF_CONFIG_REG_ENABLE_PME);
+ mdelay(1);
+ iwl_clear_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
+ CSR_RESET_LINK_PWR_MGMT_DISABLED);
+ }
mdelay(5);
}
if (ret >= 0)
return 0;
+ iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
+ CSR_RESET_LINK_PWR_MGMT_DISABLED);
+ msleep(1);
+
for (iter = 0; iter < 10; iter++) {
/* If HW is not ready, prepare the conditions to check again */
iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
do {
ret = iwl_pcie_set_hw_ready(trans);
- if (ret >= 0)
- return 0;
+ if (ret >= 0) {
+ ret = 0;
+ goto out;
+ }
usleep_range(200, 1000);
t += 200;
IWL_ERR(trans, "Couldn't prepare the card\n");
+out:
+ iwl_clear_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
+ CSR_RESET_LINK_PWR_MGMT_DISABLED);
+
return ret;
}
/* start timer if queue currently empty */
if (q->read_ptr == q->write_ptr) {
- if (txq->wd_timeout)
- mod_timer(&txq->stuck_timer, jiffies + txq->wd_timeout);
+ if (txq->wd_timeout) {
+ /*
+ * If the TXQ is active, then set the timer, if not,
+ * set the timer in remainder so that the timer will
+ * be armed with the right value when the station will
+ * wake up.
+ */
+ if (!txq->frozen)
+ mod_timer(&txq->stuck_timer,
+ jiffies + txq->wd_timeout);
+ else
+ txq->frozen_expiry_remainder = txq->wd_timeout;
+ }
IWL_DEBUG_RPM(trans, "Q: %d first tx - take ref\n", q->id);
iwl_trans_pcie_ref(trans);
}
(struct rsi_91x_sdiodev *)adapter->rsi_dev;
u32 len;
u32 num_blocks;
+ const u8 *fw;
const struct firmware *fw_entry = NULL;
u32 block_size = dev->tx_blk_size;
int status = 0;
return status;
}
+ /* Copy firmware into DMA-accessible memory */
+ fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
+ if (!fw)
+ return -ENOMEM;
len = fw_entry->size;
if (len % 4)
rsi_dbg(INIT_ZONE, "%s: Instruction size:%d\n", __func__, len);
rsi_dbg(INIT_ZONE, "%s: num blocks: %d\n", __func__, num_blocks);
- status = rsi_copy_to_card(common, fw_entry->data, len, num_blocks);
+ status = rsi_copy_to_card(common, fw, len, num_blocks);
+ kfree(fw);
release_firmware(fw_entry);
return status;
}
return status;
}
+ /* Copy firmware into DMA-accessible memory */
fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
+ if (!fw)
+ return -ENOMEM;
len = fw_entry->size;
if (len % 4)
rsi_dbg(INIT_ZONE, "%s: num blocks: %d\n", __func__, num_blocks);
status = rsi_copy_to_card(common, fw, len, num_blocks);
+ kfree(fw);
release_firmware(fw_entry);
return status;
}
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct sk_buff *skb = ieee80211_beacon_get(hw, vif);
+ struct rtl_tcb_desc tcb_desc;
- if (skb)
- rtlpriv->intf_ops->adapter_tx(hw, NULL, skb, NULL);
+ if (skb) {
+ memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
+ rtlpriv->intf_ops->adapter_tx(hw, NULL, skb, &tcb_desc);
+ }
}
static void rtl_op_bss_info_changed(struct ieee80211_hw *hw,
module_param_named(ips, rtl8723be_mod_params.inactiveps, bool, 0444);
module_param_named(swlps, rtl8723be_mod_params.swctrl_lps, bool, 0444);
module_param_named(fwlps, rtl8723be_mod_params.fwctrl_lps, bool, 0444);
+module_param_named(msi, rtl8723be_mod_params.msi_support, bool, 0444);
module_param_named(disable_watchdog, rtl8723be_mod_params.disable_watchdog,
bool, 0444);
MODULE_PARM_DESC(swenc, "Set to 1 for software crypto (default 0)\n");
void xenvif_skb_zerocopy_complete(struct xenvif_queue *queue)
{
atomic_dec(&queue->inflight_packets);
+
+ /* Wake the dealloc thread _after_ decrementing inflight_packets so
+ * that if kthread_stop() has already been called, the dealloc thread
+ * does not wait forever with nothing to wake it.
+ */
+ wake_up(&queue->dealloc_wq);
}
int xenvif_schedulable(struct xenvif *vif)
static struct gnttab_map_grant_ref *xenvif_get_requests(struct xenvif_queue *queue,
struct sk_buff *skb,
struct xen_netif_tx_request *txp,
- struct gnttab_map_grant_ref *gop)
+ struct gnttab_map_grant_ref *gop,
+ unsigned int frag_overflow,
+ struct sk_buff *nskb)
{
struct skb_shared_info *shinfo = skb_shinfo(skb);
skb_frag_t *frags = shinfo->frags;
u16 pending_idx = XENVIF_TX_CB(skb)->pending_idx;
int start;
pending_ring_idx_t index;
- unsigned int nr_slots, frag_overflow = 0;
+ unsigned int nr_slots;
- /* At this point shinfo->nr_frags is in fact the number of
- * slots, which can be as large as XEN_NETBK_LEGACY_SLOTS_MAX.
- */
- if (shinfo->nr_frags > MAX_SKB_FRAGS) {
- frag_overflow = shinfo->nr_frags - MAX_SKB_FRAGS;
- BUG_ON(frag_overflow > MAX_SKB_FRAGS);
- shinfo->nr_frags = MAX_SKB_FRAGS;
- }
nr_slots = shinfo->nr_frags;
/* Skip first skb fragment if it is on same page as header fragment. */
}
if (frag_overflow) {
- struct sk_buff *nskb = xenvif_alloc_skb(0);
- if (unlikely(nskb == NULL)) {
- if (net_ratelimit())
- netdev_err(queue->vif->dev,
- "Can't allocate the frag_list skb.\n");
- return NULL;
- }
shinfo = skb_shinfo(nskb);
frags = shinfo->frags;
unsigned *copy_ops,
unsigned *map_ops)
{
- struct gnttab_map_grant_ref *gop = queue->tx_map_ops, *request_gop;
- struct sk_buff *skb;
+ struct gnttab_map_grant_ref *gop = queue->tx_map_ops;
+ struct sk_buff *skb, *nskb;
int ret;
+ unsigned int frag_overflow;
while (skb_queue_len(&queue->tx_queue) < budget) {
struct xen_netif_tx_request txreq;
break;
}
+ skb_shinfo(skb)->nr_frags = ret;
+ if (data_len < txreq.size)
+ skb_shinfo(skb)->nr_frags++;
+ /* At this point shinfo->nr_frags is in fact the number of
+ * slots, which can be as large as XEN_NETBK_LEGACY_SLOTS_MAX.
+ */
+ frag_overflow = 0;
+ nskb = NULL;
+ if (skb_shinfo(skb)->nr_frags > MAX_SKB_FRAGS) {
+ frag_overflow = skb_shinfo(skb)->nr_frags - MAX_SKB_FRAGS;
+ BUG_ON(frag_overflow > MAX_SKB_FRAGS);
+ skb_shinfo(skb)->nr_frags = MAX_SKB_FRAGS;
+ nskb = xenvif_alloc_skb(0);
+ if (unlikely(nskb == NULL)) {
+ kfree_skb(skb);
+ xenvif_tx_err(queue, &txreq, idx);
+ if (net_ratelimit())
+ netdev_err(queue->vif->dev,
+ "Can't allocate the frag_list skb.\n");
+ break;
+ }
+ }
+
if (extras[XEN_NETIF_EXTRA_TYPE_GSO - 1].type) {
struct xen_netif_extra_info *gso;
gso = &extras[XEN_NETIF_EXTRA_TYPE_GSO - 1];
if (xenvif_set_skb_gso(queue->vif, skb, gso)) {
/* Failure in xenvif_set_skb_gso is fatal. */
kfree_skb(skb);
+ kfree_skb(nskb);
break;
}
}
(*copy_ops)++;
- skb_shinfo(skb)->nr_frags = ret;
if (data_len < txreq.size) {
- skb_shinfo(skb)->nr_frags++;
frag_set_pending_idx(&skb_shinfo(skb)->frags[0],
pending_idx);
xenvif_tx_create_map_op(queue, pending_idx, &txreq, gop);
queue->pending_cons++;
- request_gop = xenvif_get_requests(queue, skb, txfrags, gop);
- if (request_gop == NULL) {
- kfree_skb(skb);
- xenvif_tx_err(queue, &txreq, idx);
- break;
- }
- gop = request_gop;
+ gop = xenvif_get_requests(queue, skb, txfrags, gop,
+ frag_overflow, nskb);
__skb_queue_tail(&queue->tx_queue, skb);
smp_wmb();
queue->dealloc_prod++;
} while (ubuf);
- wake_up(&queue->dealloc_wq);
spin_unlock_irqrestore(&queue->callback_lock, flags);
if (likely(zerocopy_success))
if (resp) {
resp(sp, fp, arg);
res = true;
- } else if (!IS_ERR(fp)) {
- fc_frame_free(fp);
}
spin_lock_bh(&ep->ex_lock);
* If new exch resp handler is valid then call that
* first.
*/
- fc_invoke_resp(ep, sp, fp);
+ if (!fc_invoke_resp(ep, sp, fp))
+ fc_frame_free(fp);
fc_exch_release(ep);
return;
fc_exch_hold(ep);
if (!rc)
fc_exch_delete(ep);
- fc_invoke_resp(ep, sp, fp);
+ if (!fc_invoke_resp(ep, sp, fp))
+ fc_frame_free(fp);
if (has_rec)
fc_exch_timer_set(ep, ep->r_a_tov);
fc_exch_release(ep);
fc_fcp_pkt_hold(fsp);
spin_unlock_irqrestore(&si->scsi_queue_lock, flags);
- if (!fc_fcp_lock_pkt(fsp)) {
+ spin_lock_bh(&fsp->scsi_pkt_lock);
+ if (!(fsp->state & FC_SRB_COMPL)) {
+ fsp->state |= FC_SRB_COMPL;
+ /*
+ * TODO: dropping scsi_pkt_lock and then reacquiring
+ * again around fc_fcp_cleanup_cmd() is required,
+ * since fc_fcp_cleanup_cmd() calls into
+ * fc_seq_set_resp() and that func preempts cpu using
+ * schedule. May be schedule and related code should be
+ * removed instead of unlocking here to avoid scheduling
+ * while atomic bug.
+ */
+ spin_unlock_bh(&fsp->scsi_pkt_lock);
+
fc_fcp_cleanup_cmd(fsp, error);
+
+ spin_lock_bh(&fsp->scsi_pkt_lock);
fc_io_compl(fsp);
- fc_fcp_unlock_pkt(fsp);
}
+ spin_unlock_bh(&fsp->scsi_pkt_lock);
fc_fcp_pkt_release(fsp);
spin_lock_irqsave(&si->scsi_queue_lock, flags);
{
struct iscsi_conn *conn = cls_conn->dd_data;
struct iscsi_session *session = conn->session;
- unsigned long flags;
del_timer_sync(&conn->transport_timer);
+ mutex_lock(&session->eh_mutex);
spin_lock_bh(&session->frwd_lock);
conn->c_stage = ISCSI_CONN_CLEANUP_WAIT;
if (session->leadconn == conn) {
}
spin_unlock_bh(&session->frwd_lock);
- /*
- * Block until all in-progress commands for this connection
- * time out or fail.
- */
- for (;;) {
- spin_lock_irqsave(session->host->host_lock, flags);
- if (!atomic_read(&session->host->host_busy)) { /* OK for ERL == 0 */
- spin_unlock_irqrestore(session->host->host_lock, flags);
- break;
- }
- spin_unlock_irqrestore(session->host->host_lock, flags);
- msleep_interruptible(500);
- iscsi_conn_printk(KERN_INFO, conn, "iscsi conn_destroy(): "
- "host_busy %d host_failed %d\n",
- atomic_read(&session->host->host_busy),
- session->host->host_failed);
- /*
- * force eh_abort() to unblock
- */
- wake_up(&conn->ehwait);
- }
-
/* flush queued up work because we free the connection below */
iscsi_suspend_tx(conn);
if (session->leadconn == conn)
session->leadconn = NULL;
spin_unlock_bh(&session->frwd_lock);
+ mutex_unlock(&session->eh_mutex);
iscsi_destroy_conn(cls_conn);
}
max_xfer = sdkp->max_xfer_blocks;
max_xfer <<= ilog2(sdp->sector_size) - 9;
- max_xfer = min_not_zero(queue_max_hw_sectors(sdkp->disk->queue),
- max_xfer);
- blk_queue_max_hw_sectors(sdkp->disk->queue, max_xfer);
+ sdkp->disk->queue->limits.max_sectors =
+ min_not_zero(queue_max_hw_sectors(sdkp->disk->queue), max_xfer);
+
set_capacity(disk, sdkp->capacity);
sd_config_write_same(sdkp);
kfree(buffer);
irq_free_desc(irq);
}
-static void xen_evtchn_close(unsigned int port, unsigned int cpu)
+static void xen_evtchn_close(unsigned int port)
{
struct evtchn_close close;
- xen_evtchn_op_close(port, cpu);
-
close.port = port;
if (HYPERVISOR_event_channel_op(EVTCHNOP_close, &close) != 0)
BUG();
err:
pr_err("irq%d: Failed to set port to irq mapping (%d)\n", irq, rc);
- xen_evtchn_close(evtchn, NR_CPUS);
+ xen_evtchn_close(evtchn);
return 0;
}
return;
mask_evtchn(evtchn);
- xen_evtchn_close(evtchn, cpu_from_evtchn(evtchn));
+ xen_evtchn_close(evtchn);
xen_irq_info_cleanup(info);
}
if (VALID_EVTCHN(evtchn)) {
unsigned int cpu = cpu_from_irq(irq);
- xen_evtchn_close(evtchn, cpu);
+ xen_evtchn_close(evtchn);
switch (type_from_irq(irq)) {
case IRQT_VIRQ:
}
}
-static bool evtchn_fifo_is_linked(unsigned port)
-{
- event_word_t *word = event_word_from_port(port);
- return sync_test_bit(EVTCHN_FIFO_BIT(LINKED, word), BM(word));
-}
-
static uint32_t clear_linked(volatile event_word_t *word)
{
event_word_t new, old, w;
static void consume_one_event(unsigned cpu,
struct evtchn_fifo_control_block *control_block,
- unsigned priority, unsigned long *ready,
- bool drop)
+ unsigned priority, unsigned long *ready)
{
struct evtchn_fifo_queue *q = &per_cpu(cpu_queue, cpu);
uint32_t head;
if (head == 0)
clear_bit(priority, ready);
- if (evtchn_fifo_is_pending(port) && !evtchn_fifo_is_masked(port)) {
- if (likely(!drop))
- handle_irq_for_port(port);
- }
+ if (evtchn_fifo_is_pending(port) && !evtchn_fifo_is_masked(port))
+ handle_irq_for_port(port);
q->head[priority] = head;
}
-static void __evtchn_fifo_handle_events(unsigned cpu, bool drop)
+static void evtchn_fifo_handle_events(unsigned cpu)
{
struct evtchn_fifo_control_block *control_block;
unsigned long ready;
while (ready) {
q = find_first_bit(&ready, EVTCHN_FIFO_MAX_QUEUES);
- consume_one_event(cpu, control_block, q, &ready, drop);
+ consume_one_event(cpu, control_block, q, &ready);
ready |= xchg(&control_block->ready, 0);
}
}
-static void evtchn_fifo_handle_events(unsigned cpu)
-{
- __evtchn_fifo_handle_events(cpu, false);
-}
-
static void evtchn_fifo_resume(void)
{
unsigned cpu;
event_array_pages = 0;
}
-static void evtchn_fifo_close(unsigned port, unsigned int cpu)
-{
- if (cpu == NR_CPUS)
- return;
-
- get_online_cpus();
- if (cpu_online(cpu)) {
- if (WARN_ON(irqs_disabled()))
- goto out;
-
- while (evtchn_fifo_is_linked(port))
- cpu_relax();
- } else {
- __evtchn_fifo_handle_events(cpu, true);
- }
-
-out:
- put_online_cpus();
-}
-
static const struct evtchn_ops evtchn_ops_fifo = {
.max_channels = evtchn_fifo_max_channels,
.nr_channels = evtchn_fifo_nr_channels,
.unmask = evtchn_fifo_unmask,
.handle_events = evtchn_fifo_handle_events,
.resume = evtchn_fifo_resume,
- .close = evtchn_fifo_close,
};
static int evtchn_fifo_alloc_control_block(unsigned cpu)
bool (*test_and_set_mask)(unsigned port);
void (*mask)(unsigned port);
void (*unmask)(unsigned port);
- void (*close)(unsigned port, unsigned cpu);
void (*handle_events)(unsigned cpu);
void (*resume)(void);
evtchn_ops->resume();
}
-static inline void xen_evtchn_op_close(unsigned port, unsigned cpu)
-{
- if (evtchn_ops->close)
- return evtchn_ops->close(port, cpu);
-}
-
void xen_evtchn_2l_init(void);
int xen_evtchn_fifo_init(void);
rv = xenbus_unmap_ring(dev, node->handles, node->nr_handles,
addrs);
- if (!rv)
+ if (!rv) {
vunmap(vaddr);
+ free_xenballooned_pages(node->nr_handles, node->hvm.pages);
+ }
else
WARN(1, "Leaking %p, size %u page(s)\n", vaddr,
node->nr_handles);
* Tell lockdep about it.
*/
if (ac->newtrans->type & __TRANS_FREEZABLE)
- rwsem_acquire_read(
- &ac->root->fs_info->sb->s_writers.lock_map[SB_FREEZE_FS-1],
- 0, 1, _THIS_IP_);
+ __sb_writers_acquired(ac->root->fs_info->sb, SB_FREEZE_FS);
current->journal_info = ac->newtrans;
* async commit thread will be the one to unlock it.
*/
if (ac->newtrans->type & __TRANS_FREEZABLE)
- rwsem_release(
- &root->fs_info->sb->s_writers.lock_map[SB_FREEZE_FS-1],
- 1, _THIS_IP_);
+ __sb_writers_release(root->fs_info->sb, SB_FREEZE_FS);
schedule_work(&ac->work);
err = -EINVAL;
if (old) {
- struct fuse_dev *fud = fuse_get_dev(old);
+ struct fuse_dev *fud = NULL;
+
+ /*
+ * Check against file->f_op because CUSE
+ * uses the same ioctl handler.
+ */
+ if (old->f_op == file->f_op &&
+ old->f_cred->user_ns == file->f_cred->user_ns)
+ fud = fuse_get_dev(old);
if (fud) {
mutex_lock(&fuse_mutex);
return total_objects;
}
+static void destroy_super_work(struct work_struct *work)
+{
+ struct super_block *s = container_of(work, struct super_block,
+ destroy_work);
+ int i;
+
+ for (i = 0; i < SB_FREEZE_LEVELS; i++)
+ percpu_free_rwsem(&s->s_writers.rw_sem[i]);
+ kfree(s);
+}
+
+static void destroy_super_rcu(struct rcu_head *head)
+{
+ struct super_block *s = container_of(head, struct super_block, rcu);
+ INIT_WORK(&s->destroy_work, destroy_super_work);
+ schedule_work(&s->destroy_work);
+}
+
/**
* destroy_super - frees a superblock
* @s: superblock to free
*/
static void destroy_super(struct super_block *s)
{
- int i;
list_lru_destroy(&s->s_dentry_lru);
list_lru_destroy(&s->s_inode_lru);
- for (i = 0; i < SB_FREEZE_LEVELS; i++)
- percpu_counter_destroy(&s->s_writers.counter[i]);
security_sb_free(s);
WARN_ON(!list_empty(&s->s_mounts));
kfree(s->s_subtype);
kfree(s->s_options);
- kfree_rcu(s, rcu);
+ call_rcu(&s->rcu, destroy_super_rcu);
}
/**
goto fail;
for (i = 0; i < SB_FREEZE_LEVELS; i++) {
- if (percpu_counter_init(&s->s_writers.counter[i], 0,
- GFP_KERNEL) < 0)
+ if (__percpu_init_rwsem(&s->s_writers.rw_sem[i],
+ sb_writers_name[i],
+ &type->s_writers_key[i]))
goto fail;
- lockdep_init_map(&s->s_writers.lock_map[i], sb_writers_name[i],
- &type->s_writers_key[i], 0);
}
- init_waitqueue_head(&s->s_writers.wait);
init_waitqueue_head(&s->s_writers.wait_unfrozen);
s->s_bdi = &noop_backing_dev_info;
s->s_flags = flags;
*/
void __sb_end_write(struct super_block *sb, int level)
{
- percpu_counter_dec(&sb->s_writers.counter[level-1]);
- /*
- * Make sure s_writers are updated before we wake up waiters in
- * freeze_super().
- */
- smp_mb();
- if (waitqueue_active(&sb->s_writers.wait))
- wake_up(&sb->s_writers.wait);
- rwsem_release(&sb->s_writers.lock_map[level-1], 1, _RET_IP_);
+ percpu_up_read(sb->s_writers.rw_sem + level-1);
}
EXPORT_SYMBOL(__sb_end_write);
-#ifdef CONFIG_LOCKDEP
-/*
- * We want lockdep to tell us about possible deadlocks with freezing but
- * it's it bit tricky to properly instrument it. Getting a freeze protection
- * works as getting a read lock but there are subtle problems. XFS for example
- * gets freeze protection on internal level twice in some cases, which is OK
- * only because we already hold a freeze protection also on higher level. Due
- * to these cases we have to tell lockdep we are doing trylock when we
- * already hold a freeze protection for a higher freeze level.
- */
-static void acquire_freeze_lock(struct super_block *sb, int level, bool trylock,
- unsigned long ip)
-{
- int i;
-
- if (!trylock) {
- for (i = 0; i < level - 1; i++)
- if (lock_is_held(&sb->s_writers.lock_map[i])) {
- trylock = true;
- break;
- }
- }
- rwsem_acquire_read(&sb->s_writers.lock_map[level-1], 0, trylock, ip);
-}
-#endif
-
/*
* This is an internal function, please use sb_start_{write,pagefault,intwrite}
* instead.
*/
int __sb_start_write(struct super_block *sb, int level, bool wait)
{
-retry:
- if (unlikely(sb->s_writers.frozen >= level)) {
- if (!wait)
- return 0;
- wait_event(sb->s_writers.wait_unfrozen,
- sb->s_writers.frozen < level);
- }
+ bool force_trylock = false;
+ int ret = 1;
#ifdef CONFIG_LOCKDEP
- acquire_freeze_lock(sb, level, !wait, _RET_IP_);
-#endif
- percpu_counter_inc(&sb->s_writers.counter[level-1]);
/*
- * Make sure counter is updated before we check for frozen.
- * freeze_super() first sets frozen and then checks the counter.
+ * We want lockdep to tell us about possible deadlocks with freezing
+ * but it's it bit tricky to properly instrument it. Getting a freeze
+ * protection works as getting a read lock but there are subtle
+ * problems. XFS for example gets freeze protection on internal level
+ * twice in some cases, which is OK only because we already hold a
+ * freeze protection also on higher level. Due to these cases we have
+ * to use wait == F (trylock mode) which must not fail.
*/
- smp_mb();
- if (unlikely(sb->s_writers.frozen >= level)) {
- __sb_end_write(sb, level);
- goto retry;
+ if (wait) {
+ int i;
+
+ for (i = 0; i < level - 1; i++)
+ if (percpu_rwsem_is_held(sb->s_writers.rw_sem + i)) {
+ force_trylock = true;
+ break;
+ }
}
- return 1;
+#endif
+ if (wait && !force_trylock)
+ percpu_down_read(sb->s_writers.rw_sem + level-1);
+ else
+ ret = percpu_down_read_trylock(sb->s_writers.rw_sem + level-1);
+
+ WARN_ON(force_trylock & !ret);
+ return ret;
}
EXPORT_SYMBOL(__sb_start_write);
* @level: type of writers we wait for (normal vs page fault)
*
* This function waits until there are no writers of given type to given file
- * system. Caller of this function should make sure there can be no new writers
- * of type @level before calling this function. Otherwise this function can
- * livelock.
+ * system.
*/
static void sb_wait_write(struct super_block *sb, int level)
{
- s64 writers;
-
+ percpu_down_write(sb->s_writers.rw_sem + level-1);
/*
- * We just cycle-through lockdep here so that it does not complain
- * about returning with lock to userspace
+ * We are going to return to userspace and forget about this lock, the
+ * ownership goes to the caller of thaw_super() which does unlock.
+ *
+ * FIXME: we should do this before return from freeze_super() after we
+ * called sync_filesystem(sb) and s_op->freeze_fs(sb), and thaw_super()
+ * should re-acquire these locks before s_op->unfreeze_fs(sb). However
+ * this leads to lockdep false-positives, so currently we do the early
+ * release right after acquire.
*/
- rwsem_acquire(&sb->s_writers.lock_map[level-1], 0, 0, _THIS_IP_);
- rwsem_release(&sb->s_writers.lock_map[level-1], 1, _THIS_IP_);
-
- do {
- DEFINE_WAIT(wait);
+ percpu_rwsem_release(sb->s_writers.rw_sem + level-1, 0, _THIS_IP_);
+}
- /*
- * We use a barrier in prepare_to_wait() to separate setting
- * of frozen and checking of the counter
- */
- prepare_to_wait(&sb->s_writers.wait, &wait,
- TASK_UNINTERRUPTIBLE);
+static void sb_freeze_unlock(struct super_block *sb)
+{
+ int level;
- writers = percpu_counter_sum(&sb->s_writers.counter[level-1]);
- if (writers)
- schedule();
+ for (level = 0; level < SB_FREEZE_LEVELS; ++level)
+ percpu_rwsem_acquire(sb->s_writers.rw_sem + level, 0, _THIS_IP_);
- finish_wait(&sb->s_writers.wait, &wait);
- } while (writers);
+ for (level = SB_FREEZE_LEVELS - 1; level >= 0; level--)
+ percpu_up_write(sb->s_writers.rw_sem + level);
}
/**
return 0;
}
- /* From now on, no new normal writers can start */
sb->s_writers.frozen = SB_FREEZE_WRITE;
- smp_wmb();
-
/* Release s_umount to preserve sb_start_write -> s_umount ordering */
up_write(&sb->s_umount);
-
sb_wait_write(sb, SB_FREEZE_WRITE);
+ down_write(&sb->s_umount);
/* Now we go and block page faults... */
- down_write(&sb->s_umount);
sb->s_writers.frozen = SB_FREEZE_PAGEFAULT;
- smp_wmb();
-
sb_wait_write(sb, SB_FREEZE_PAGEFAULT);
/* All writers are done so after syncing there won't be dirty data */
/* Now wait for internal filesystem counter */
sb->s_writers.frozen = SB_FREEZE_FS;
- smp_wmb();
sb_wait_write(sb, SB_FREEZE_FS);
if (sb->s_op->freeze_fs) {
printk(KERN_ERR
"VFS:Filesystem freeze failed\n");
sb->s_writers.frozen = SB_UNFROZEN;
- smp_wmb();
+ sb_freeze_unlock(sb);
wake_up(&sb->s_writers.wait_unfrozen);
deactivate_locked_super(sb);
return ret;
return -EINVAL;
}
- if (sb->s_flags & MS_RDONLY)
+ if (sb->s_flags & MS_RDONLY) {
+ sb->s_writers.frozen = SB_UNFROZEN;
goto out;
+ }
if (sb->s_op->unfreeze_fs) {
error = sb->s_op->unfreeze_fs(sb);
}
}
-out:
sb->s_writers.frozen = SB_UNFROZEN;
- smp_wmb();
+ sb_freeze_unlock(sb);
+out:
wake_up(&sb->s_writers.wait_unfrozen);
deactivate_locked_super(sb);
-
return 0;
}
EXPORT_SYMBOL(thaw_super);
obj-$(CONFIG_UFS_FS) += ufs.o
ufs-objs := balloc.o cylinder.o dir.o file.o ialloc.o inode.o \
- namei.o super.o symlink.o truncate.o util.o
+ namei.o super.o symlink.o util.o
ccflags-$(CONFIG_UFS_DEBUG) += -DDEBUG
if (oldcount == 0) {
result = ufs_alloc_fragments (inode, cgno, goal, count, err);
if (result) {
+ write_seqlock(&UFS_I(inode)->meta_lock);
ufs_cpu_to_data_ptr(sb, p, result);
+ write_sequnlock(&UFS_I(inode)->meta_lock);
*err = 0;
UFS_I(inode)->i_lastfrag =
max(UFS_I(inode)->i_lastfrag, fragment + count);
ufs_change_blocknr(inode, fragment - oldcount, oldcount,
uspi->s_sbbase + tmp,
uspi->s_sbbase + result, locked_page);
+ write_seqlock(&UFS_I(inode)->meta_lock);
ufs_cpu_to_data_ptr(sb, p, result);
+ write_sequnlock(&UFS_I(inode)->meta_lock);
*err = 0;
UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag,
fragment + count);
#include "swab.h"
#include "util.h"
-static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock);
-
-static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4])
+static int ufs_block_to_path(struct inode *inode, sector_t i_block, unsigned offsets[4])
{
struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi;
int ptrs = uspi->s_apb;
return n;
}
+typedef struct {
+ void *p;
+ union {
+ __fs32 key32;
+ __fs64 key64;
+ };
+ struct buffer_head *bh;
+} Indirect;
+
+static inline int grow_chain32(struct ufs_inode_info *ufsi,
+ struct buffer_head *bh, __fs32 *v,
+ Indirect *from, Indirect *to)
+{
+ Indirect *p;
+ unsigned seq;
+ to->bh = bh;
+ do {
+ seq = read_seqbegin(&ufsi->meta_lock);
+ to->key32 = *(__fs32 *)(to->p = v);
+ for (p = from; p <= to && p->key32 == *(__fs32 *)p->p; p++)
+ ;
+ } while (read_seqretry(&ufsi->meta_lock, seq));
+ return (p > to);
+}
+
+static inline int grow_chain64(struct ufs_inode_info *ufsi,
+ struct buffer_head *bh, __fs64 *v,
+ Indirect *from, Indirect *to)
+{
+ Indirect *p;
+ unsigned seq;
+ to->bh = bh;
+ do {
+ seq = read_seqbegin(&ufsi->meta_lock);
+ to->key64 = *(__fs64 *)(to->p = v);
+ for (p = from; p <= to && p->key64 == *(__fs64 *)p->p; p++)
+ ;
+ } while (read_seqretry(&ufsi->meta_lock, seq));
+ return (p > to);
+}
+
/*
* Returns the location of the fragment from
* the beginning of the filesystem.
*/
-static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock)
+static u64 ufs_frag_map(struct inode *inode, unsigned offsets[4], int depth)
{
struct ufs_inode_info *ufsi = UFS_I(inode);
struct super_block *sb = inode->i_sb;
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
u64 mask = (u64) uspi->s_apbmask>>uspi->s_fpbshift;
int shift = uspi->s_apbshift-uspi->s_fpbshift;
- sector_t offsets[4], *p;
- int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets);
- u64 ret = 0L;
- __fs32 block;
- __fs64 u2_block = 0L;
+ Indirect chain[4], *q = chain;
+ unsigned *p;
unsigned flags = UFS_SB(sb)->s_flags;
- u64 temp = 0L;
+ u64 res = 0;
- UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth);
UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",
uspi->s_fpbshift, uspi->s_apbmask,
(unsigned long long)mask);
if (depth == 0)
- return 0;
+ goto no_block;
+again:
p = offsets;
- if (needs_lock)
- lock_ufs(sb);
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
goto ufs2;
- block = ufsi->i_u1.i_data[*p++];
- if (!block)
- goto out;
+ if (!grow_chain32(ufsi, NULL, &ufsi->i_u1.i_data[*p++], chain, q))
+ goto changed;
+ if (!q->key32)
+ goto no_block;
while (--depth) {
+ __fs32 *ptr;
struct buffer_head *bh;
- sector_t n = *p++;
+ unsigned n = *p++;
- bh = sb_bread(sb, uspi->s_sbbase + fs32_to_cpu(sb, block)+(n>>shift));
+ bh = sb_bread(sb, uspi->s_sbbase +
+ fs32_to_cpu(sb, q->key32) + (n>>shift));
if (!bh)
- goto out;
- block = ((__fs32 *) bh->b_data)[n & mask];
- brelse (bh);
- if (!block)
- goto out;
- }
- ret = (u64) (uspi->s_sbbase + fs32_to_cpu(sb, block) + (frag & uspi->s_fpbmask));
- goto out;
-ufs2:
- u2_block = ufsi->i_u1.u2_i_data[*p++];
- if (!u2_block)
- goto out;
+ goto no_block;
+ ptr = (__fs32 *)bh->b_data + (n & mask);
+ if (!grow_chain32(ufsi, bh, ptr, chain, ++q))
+ goto changed;
+ if (!q->key32)
+ goto no_block;
+ }
+ res = fs32_to_cpu(sb, q->key32);
+ goto found;
+ufs2:
+ if (!grow_chain64(ufsi, NULL, &ufsi->i_u1.u2_i_data[*p++], chain, q))
+ goto changed;
+ if (!q->key64)
+ goto no_block;
while (--depth) {
+ __fs64 *ptr;
struct buffer_head *bh;
- sector_t n = *p++;
-
+ unsigned n = *p++;
- temp = (u64)(uspi->s_sbbase) + fs64_to_cpu(sb, u2_block);
- bh = sb_bread(sb, temp +(u64) (n>>shift));
+ bh = sb_bread(sb, uspi->s_sbbase +
+ fs64_to_cpu(sb, q->key64) + (n>>shift));
if (!bh)
- goto out;
- u2_block = ((__fs64 *)bh->b_data)[n & mask];
- brelse(bh);
- if (!u2_block)
- goto out;
+ goto no_block;
+ ptr = (__fs64 *)bh->b_data + (n & mask);
+ if (!grow_chain64(ufsi, bh, ptr, chain, ++q))
+ goto changed;
+ if (!q->key64)
+ goto no_block;
}
- temp = (u64)uspi->s_sbbase + fs64_to_cpu(sb, u2_block);
- ret = temp + (u64) (frag & uspi->s_fpbmask);
+ res = fs64_to_cpu(sb, q->key64);
+found:
+ res += uspi->s_sbbase;
+no_block:
+ while (q > chain) {
+ brelse(q->bh);
+ q--;
+ }
+ return res;
-out:
- if (needs_lock)
- unlock_ufs(sb);
- return ret;
+changed:
+ while (q > chain) {
+ brelse(q->bh);
+ q--;
+ }
+ goto again;
+}
+
+/*
+ * Unpacking tails: we have a file with partial final block and
+ * we had been asked to extend it. If the fragment being written
+ * is within the same block, we need to extend the tail just to cover
+ * that fragment. Otherwise the tail is extended to full block.
+ *
+ * Note that we might need to create a _new_ tail, but that will
+ * be handled elsewhere; this is strictly for resizing old
+ * ones.
+ */
+static bool
+ufs_extend_tail(struct inode *inode, u64 writes_to,
+ int *err, struct page *locked_page)
+{
+ struct ufs_inode_info *ufsi = UFS_I(inode);
+ struct super_block *sb = inode->i_sb;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
+ unsigned lastfrag = ufsi->i_lastfrag; /* it's a short file, so unsigned is enough */
+ unsigned block = ufs_fragstoblks(lastfrag);
+ unsigned new_size;
+ void *p;
+ u64 tmp;
+
+ if (writes_to < (lastfrag | uspi->s_fpbmask))
+ new_size = (writes_to & uspi->s_fpbmask) + 1;
+ else
+ new_size = uspi->s_fpb;
+
+ p = ufs_get_direct_data_ptr(uspi, ufsi, block);
+ tmp = ufs_new_fragments(inode, p, lastfrag, ufs_data_ptr_to_cpu(sb, p),
+ new_size, err, locked_page);
+ return tmp != 0;
}
/**
* ufs_inode_getfrag() - allocate new fragment(s)
* @inode: pointer to inode
- * @fragment: number of `fragment' which hold pointer
- * to new allocated fragment(s)
+ * @index: number of block pointer within the inode's array.
* @new_fragment: number of new allocated fragment(s)
- * @required: how many fragment(s) we require
* @err: we set it if something wrong
- * @phys: pointer to where we save physical number of new allocated fragments,
- * NULL if we allocate not data(indirect blocks for example).
* @new: we set it if we allocate new block
* @locked_page: for ufs_new_fragments()
*/
-static struct buffer_head *
-ufs_inode_getfrag(struct inode *inode, u64 fragment,
- sector_t new_fragment, unsigned int required, int *err,
- long *phys, int *new, struct page *locked_page)
+static u64
+ufs_inode_getfrag(struct inode *inode, unsigned index,
+ sector_t new_fragment, int *err,
+ int *new, struct page *locked_page)
{
struct ufs_inode_info *ufsi = UFS_I(inode);
struct super_block *sb = inode->i_sb;
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
- struct buffer_head * result;
- unsigned blockoff, lastblockoff;
- u64 tmp, goal, lastfrag, block, lastblock;
- void *p, *p2;
-
- UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, "
- "metadata %d\n", inode->i_ino, (unsigned long long)fragment,
- (unsigned long long)new_fragment, required, !phys);
+ u64 tmp, goal, lastfrag;
+ unsigned nfrags = uspi->s_fpb;
+ void *p;
/* TODO : to be done for write support
if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
goto ufs2;
*/
- block = ufs_fragstoblks (fragment);
- blockoff = ufs_fragnum (fragment);
- p = ufs_get_direct_data_ptr(uspi, ufsi, block);
-
- goal = 0;
-
-repeat:
+ p = ufs_get_direct_data_ptr(uspi, ufsi, index);
tmp = ufs_data_ptr_to_cpu(sb, p);
+ if (tmp)
+ goto out;
lastfrag = ufsi->i_lastfrag;
- if (tmp && fragment < lastfrag) {
- if (!phys) {
- result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
- if (tmp == ufs_data_ptr_to_cpu(sb, p)) {
- UFSD("EXIT, result %llu\n",
- (unsigned long long)tmp + blockoff);
- return result;
- }
- brelse (result);
- goto repeat;
- } else {
- *phys = uspi->s_sbbase + tmp + blockoff;
- return NULL;
- }
- }
- lastblock = ufs_fragstoblks (lastfrag);
- lastblockoff = ufs_fragnum (lastfrag);
- /*
- * We will extend file into new block beyond last allocated block
- */
- if (lastblock < block) {
- /*
- * We must reallocate last allocated block
- */
- if (lastblockoff) {
- p2 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock);
- tmp = ufs_new_fragments(inode, p2, lastfrag,
- ufs_data_ptr_to_cpu(sb, p2),
- uspi->s_fpb - lastblockoff,
- err, locked_page);
- if (!tmp) {
- if (lastfrag != ufsi->i_lastfrag)
- goto repeat;
- else
- return NULL;
- }
- lastfrag = ufsi->i_lastfrag;
-
- }
- tmp = ufs_data_ptr_to_cpu(sb,
- ufs_get_direct_data_ptr(uspi, ufsi,
- lastblock));
- if (tmp)
- goal = tmp + uspi->s_fpb;
- tmp = ufs_new_fragments (inode, p, fragment - blockoff,
- goal, required + blockoff,
- err,
- phys != NULL ? locked_page : NULL);
- } else if (lastblock == block) {
- /*
- * We will extend last allocated block
- */
- tmp = ufs_new_fragments(inode, p, fragment -
- (blockoff - lastblockoff),
- ufs_data_ptr_to_cpu(sb, p),
- required + (blockoff - lastblockoff),
- err, phys != NULL ? locked_page : NULL);
- } else /* (lastblock > block) */ {
- /*
- * We will allocate new block before last allocated block
- */
- if (block) {
- tmp = ufs_data_ptr_to_cpu(sb,
- ufs_get_direct_data_ptr(uspi, ufsi, block - 1));
- if (tmp)
- goal = tmp + uspi->s_fpb;
- }
- tmp = ufs_new_fragments(inode, p, fragment - blockoff,
- goal, uspi->s_fpb, err,
- phys != NULL ? locked_page : NULL);
+ /* will that be a new tail? */
+ if (new_fragment < UFS_NDIR_FRAGMENT && new_fragment >= lastfrag)
+ nfrags = (new_fragment & uspi->s_fpbmask) + 1;
+
+ goal = 0;
+ if (index) {
+ goal = ufs_data_ptr_to_cpu(sb,
+ ufs_get_direct_data_ptr(uspi, ufsi, index - 1));
+ if (goal)
+ goal += uspi->s_fpb;
}
+ tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment),
+ goal, uspi->s_fpb, err, locked_page);
+
if (!tmp) {
- if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) ||
- (blockoff && lastfrag != ufsi->i_lastfrag))
- goto repeat;
*err = -ENOSPC;
- return NULL;
+ return 0;
}
- if (!phys) {
- result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
- } else {
- *phys = uspi->s_sbbase + tmp + blockoff;
- result = NULL;
- *err = 0;
+ if (new)
*new = 1;
- }
-
inode->i_ctime = CURRENT_TIME_SEC;
if (IS_SYNC(inode))
ufs_sync_inode (inode);
mark_inode_dirty(inode);
- UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff);
- return result;
+out:
+ return tmp + uspi->s_sbbase;
/* This part : To be implemented ....
Required only for writing, not required for READ-ONLY.
/**
* ufs_inode_getblock() - allocate new block
* @inode: pointer to inode
- * @bh: pointer to block which hold "pointer" to new allocated block
- * @fragment: number of `fragment' which hold pointer
- * to new allocated block
+ * @ind_block: block number of the indirect block
+ * @index: number of pointer within the indirect block
* @new_fragment: number of new allocated fragment
* (block will hold this fragment and also uspi->s_fpb-1)
* @err: see ufs_inode_getfrag()
- * @phys: see ufs_inode_getfrag()
* @new: see ufs_inode_getfrag()
* @locked_page: see ufs_inode_getfrag()
*/
-static struct buffer_head *
-ufs_inode_getblock(struct inode *inode, struct buffer_head *bh,
- u64 fragment, sector_t new_fragment, int *err,
- long *phys, int *new, struct page *locked_page)
+static u64
+ufs_inode_getblock(struct inode *inode, u64 ind_block,
+ unsigned index, sector_t new_fragment, int *err,
+ int *new, struct page *locked_page)
{
struct super_block *sb = inode->i_sb;
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
- struct buffer_head * result;
- unsigned blockoff;
- u64 tmp, goal, block;
+ int shift = uspi->s_apbshift - uspi->s_fpbshift;
+ u64 tmp = 0, goal;
+ struct buffer_head *bh;
void *p;
- block = ufs_fragstoblks (fragment);
- blockoff = ufs_fragnum (fragment);
-
- UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n",
- inode->i_ino, (unsigned long long)fragment,
- (unsigned long long)new_fragment, !phys);
+ if (!ind_block)
+ return 0;
- result = NULL;
- if (!bh)
- goto out;
- if (!buffer_uptodate(bh)) {
- ll_rw_block (READ, 1, &bh);
- wait_on_buffer (bh);
- if (!buffer_uptodate(bh))
- goto out;
+ bh = sb_bread(sb, ind_block + (index >> shift));
+ if (unlikely(!bh)) {
+ *err = -EIO;
+ return 0;
}
+
+ index &= uspi->s_apbmask >> uspi->s_fpbshift;
if (uspi->fs_magic == UFS2_MAGIC)
- p = (__fs64 *)bh->b_data + block;
+ p = (__fs64 *)bh->b_data + index;
else
- p = (__fs32 *)bh->b_data + block;
-repeat:
+ p = (__fs32 *)bh->b_data + index;
+
tmp = ufs_data_ptr_to_cpu(sb, p);
- if (tmp) {
- if (!phys) {
- result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
- if (tmp == ufs_data_ptr_to_cpu(sb, p))
- goto out;
- brelse (result);
- goto repeat;
- } else {
- *phys = uspi->s_sbbase + tmp + blockoff;
- goto out;
- }
- }
+ if (tmp)
+ goto out;
- if (block && (uspi->fs_magic == UFS2_MAGIC ?
- (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) :
- (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1]))))
+ if (index && (uspi->fs_magic == UFS2_MAGIC ?
+ (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[index-1])) :
+ (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[index-1]))))
goal = tmp + uspi->s_fpb;
else
goal = bh->b_blocknr + uspi->s_fpb;
tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal,
uspi->s_fpb, err, locked_page);
- if (!tmp) {
- if (ufs_data_ptr_to_cpu(sb, p))
- goto repeat;
+ if (!tmp)
goto out;
- }
-
- if (!phys) {
- result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
- } else {
- *phys = uspi->s_sbbase + tmp + blockoff;
+ if (new)
*new = 1;
- }
mark_buffer_dirty(bh);
if (IS_SYNC(inode))
sync_dirty_buffer(bh);
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
- UFSD("result %llu\n", (unsigned long long)tmp + blockoff);
out:
brelse (bh);
UFSD("EXIT\n");
- return result;
+ if (tmp)
+ tmp += uspi->s_sbbase;
+ return tmp;
}
/**
* readpage, writepage and so on
*/
-int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
+static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
{
- struct super_block * sb = inode->i_sb;
- struct ufs_sb_info * sbi = UFS_SB(sb);
- struct ufs_sb_private_info * uspi = sbi->s_uspi;
- struct buffer_head * bh;
- int ret, err, new;
- unsigned long ptr,phys;
+ struct super_block *sb = inode->i_sb;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
+ int err = 0, new = 0;
+ unsigned offsets[4];
+ int depth = ufs_block_to_path(inode, fragment >> uspi->s_fpbshift, offsets);
u64 phys64 = 0;
- bool needs_lock = (sbi->mutex_owner != current);
-
+ unsigned frag = fragment & uspi->s_fpbmask;
+
if (!create) {
- phys64 = ufs_frag_map(inode, fragment, needs_lock);
- UFSD("phys64 = %llu\n", (unsigned long long)phys64);
- if (phys64)
- map_bh(bh_result, sb, phys64);
- return 0;
+ phys64 = ufs_frag_map(inode, offsets, depth);
+ goto out;
}
/* This code entered only while writing ....? */
- err = -EIO;
- new = 0;
- ret = 0;
- bh = NULL;
-
- if (needs_lock)
- lock_ufs(sb);
+ mutex_lock(&UFS_I(inode)->truncate_mutex);
UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment);
- if (fragment >
- ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb)
- << uspi->s_fpbshift))
- goto abort_too_big;
-
- err = 0;
- ptr = fragment;
-
- /*
- * ok, these macros clean the logic up a bit and make
- * it much more readable:
- */
-#define GET_INODE_DATABLOCK(x) \
- ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\
- bh_result->b_page)
-#define GET_INODE_PTR(x) \
- ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\
- bh_result->b_page)
-#define GET_INDIRECT_DATABLOCK(x) \
- ufs_inode_getblock(inode, bh, x, fragment, \
- &err, &phys, &new, bh_result->b_page)
-#define GET_INDIRECT_PTR(x) \
- ufs_inode_getblock(inode, bh, x, fragment, \
- &err, NULL, NULL, NULL)
-
- if (ptr < UFS_NDIR_FRAGMENT) {
- bh = GET_INODE_DATABLOCK(ptr);
+ if (unlikely(!depth)) {
+ ufs_warning(sb, "ufs_get_block", "block > big");
+ err = -EIO;
goto out;
}
- ptr -= UFS_NDIR_FRAGMENT;
- if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) {
- bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift));
- goto get_indirect;
- }
- ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift);
- if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) {
- bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift));
- goto get_double;
- }
- ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift);
- bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift));
- bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask);
-get_double:
- bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask);
-get_indirect:
- bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask);
-
-#undef GET_INODE_DATABLOCK
-#undef GET_INODE_PTR
-#undef GET_INDIRECT_DATABLOCK
-#undef GET_INDIRECT_PTR
-out:
- if (err)
- goto abort;
- if (new)
- set_buffer_new(bh_result);
- map_bh(bh_result, sb, phys);
-abort:
- if (needs_lock)
- unlock_ufs(sb);
+ if (UFS_I(inode)->i_lastfrag < UFS_NDIR_FRAGMENT) {
+ unsigned lastfrag = UFS_I(inode)->i_lastfrag;
+ unsigned tailfrags = lastfrag & uspi->s_fpbmask;
+ if (tailfrags && fragment >= lastfrag) {
+ if (!ufs_extend_tail(inode, fragment,
+ &err, bh_result->b_page))
+ goto out;
+ }
+ }
+ if (depth == 1) {
+ phys64 = ufs_inode_getfrag(inode, offsets[0], fragment,
+ &err, &new, bh_result->b_page);
+ } else {
+ int i;
+ phys64 = ufs_inode_getfrag(inode, offsets[0], fragment,
+ &err, NULL, NULL);
+ for (i = 1; i < depth - 1; i++)
+ phys64 = ufs_inode_getblock(inode, phys64, offsets[i],
+ fragment, &err, NULL, NULL);
+ phys64 = ufs_inode_getblock(inode, phys64, offsets[depth - 1],
+ fragment, &err, &new, bh_result->b_page);
+ }
+out:
+ if (phys64) {
+ phys64 += frag;
+ map_bh(bh_result, sb, phys64);
+ if (new)
+ set_buffer_new(bh_result);
+ }
+ mutex_unlock(&UFS_I(inode)->truncate_mutex);
return err;
-
-abort_too_big:
- ufs_warning(sb, "ufs_get_block", "block > big");
- goto abort;
}
static int ufs_writepage(struct page *page, struct writeback_control *wbc)
return __block_write_begin(page, pos, len, ufs_getfrag_block);
}
+static void ufs_truncate_blocks(struct inode *);
+
static void ufs_write_failed(struct address_space *mapping, loff_t to)
{
struct inode *inode = mapping->host;
- if (to > inode->i_size)
+ if (to > inode->i_size) {
truncate_pagecache(inode, inode->i_size);
+ ufs_truncate_blocks(inode);
+ }
}
static int ufs_write_begin(struct file *file, struct address_space *mapping,
return ret;
}
+static int ufs_write_end(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *page, void *fsdata)
+{
+ int ret;
+
+ ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
+ if (ret < len)
+ ufs_write_failed(mapping, pos + len);
+ return ret;
+}
+
static sector_t ufs_bmap(struct address_space *mapping, sector_t block)
{
return generic_block_bmap(mapping,block,ufs_getfrag_block);
.readpage = ufs_readpage,
.writepage = ufs_writepage,
.write_begin = ufs_write_begin,
- .write_end = generic_write_end,
+ .write_end = ufs_write_end,
.bmap = ufs_bmap
};
ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
return -1;
}
-
+
/*
* Linux now has 32-bit uid and gid, so we can support EFT.
*/
ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
-
+
if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr,
sizeof(ufs_inode->ui_u2.ui_addr));
ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode));
ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode));
-
+
ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec);
ufs_inode->ui_atime.tv_usec = 0;
ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino));
}
-
+
mark_buffer_dirty(bh);
if (do_sync)
sync_dirty_buffer(bh);
brelse (bh);
-
+
UFSD("EXIT\n");
return 0;
}
int ufs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
- int ret;
- lock_ufs(inode->i_sb);
- ret = ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
- unlock_ufs(inode->i_sb);
- return ret;
+ return ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
}
int ufs_sync_inode (struct inode *inode)
truncate_inode_pages_final(&inode->i_data);
if (want_delete) {
- loff_t old_i_size;
- /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
- lock_ufs(inode->i_sb);
- mark_inode_dirty(inode);
- ufs_update_inode(inode, IS_SYNC(inode));
- old_i_size = inode->i_size;
inode->i_size = 0;
- if (inode->i_blocks && ufs_truncate(inode, old_i_size))
- ufs_warning(inode->i_sb, __func__, "ufs_truncate failed\n");
- unlock_ufs(inode->i_sb);
+ if (inode->i_blocks)
+ ufs_truncate_blocks(inode);
}
invalidate_inode_buffers(inode);
clear_inode(inode);
- if (want_delete) {
- lock_ufs(inode->i_sb);
+ if (want_delete)
ufs_free_inode(inode);
- unlock_ufs(inode->i_sb);
+}
+
+struct to_free {
+ struct inode *inode;
+ u64 to;
+ unsigned count;
+};
+
+static inline void free_data(struct to_free *ctx, u64 from, unsigned count)
+{
+ if (ctx->count && ctx->to != from) {
+ ufs_free_blocks(ctx->inode, ctx->to - ctx->count, ctx->count);
+ ctx->count = 0;
+ }
+ ctx->count += count;
+ ctx->to = from + count;
+}
+
+#define DIRECT_BLOCK ((inode->i_size + uspi->s_bsize - 1) >> uspi->s_bshift)
+#define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift)
+
+static void ufs_trunc_direct(struct inode *inode)
+{
+ struct ufs_inode_info *ufsi = UFS_I(inode);
+ struct super_block * sb;
+ struct ufs_sb_private_info * uspi;
+ void *p;
+ u64 frag1, frag2, frag3, frag4, block1, block2;
+ struct to_free ctx = {.inode = inode};
+ unsigned i, tmp;
+
+ UFSD("ENTER: ino %lu\n", inode->i_ino);
+
+ sb = inode->i_sb;
+ uspi = UFS_SB(sb)->s_uspi;
+
+ frag1 = DIRECT_FRAGMENT;
+ frag4 = min_t(u64, UFS_NDIR_FRAGMENT, ufsi->i_lastfrag);
+ frag2 = ((frag1 & uspi->s_fpbmask) ? ((frag1 | uspi->s_fpbmask) + 1) : frag1);
+ frag3 = frag4 & ~uspi->s_fpbmask;
+ block1 = block2 = 0;
+ if (frag2 > frag3) {
+ frag2 = frag4;
+ frag3 = frag4 = 0;
+ } else if (frag2 < frag3) {
+ block1 = ufs_fragstoblks (frag2);
+ block2 = ufs_fragstoblks (frag3);
+ }
+
+ UFSD("ino %lu, frag1 %llu, frag2 %llu, block1 %llu, block2 %llu,"
+ " frag3 %llu, frag4 %llu\n", inode->i_ino,
+ (unsigned long long)frag1, (unsigned long long)frag2,
+ (unsigned long long)block1, (unsigned long long)block2,
+ (unsigned long long)frag3, (unsigned long long)frag4);
+
+ if (frag1 >= frag2)
+ goto next1;
+
+ /*
+ * Free first free fragments
+ */
+ p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag1));
+ tmp = ufs_data_ptr_to_cpu(sb, p);
+ if (!tmp )
+ ufs_panic (sb, "ufs_trunc_direct", "internal error");
+ frag2 -= frag1;
+ frag1 = ufs_fragnum (frag1);
+
+ ufs_free_fragments(inode, tmp + frag1, frag2);
+
+next1:
+ /*
+ * Free whole blocks
+ */
+ for (i = block1 ; i < block2; i++) {
+ p = ufs_get_direct_data_ptr(uspi, ufsi, i);
+ tmp = ufs_data_ptr_to_cpu(sb, p);
+ if (!tmp)
+ continue;
+ write_seqlock(&ufsi->meta_lock);
+ ufs_data_ptr_clear(uspi, p);
+ write_sequnlock(&ufsi->meta_lock);
+
+ free_data(&ctx, tmp, uspi->s_fpb);
+ }
+
+ free_data(&ctx, 0, 0);
+
+ if (frag3 >= frag4)
+ goto next3;
+
+ /*
+ * Free last free fragments
+ */
+ p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag3));
+ tmp = ufs_data_ptr_to_cpu(sb, p);
+ if (!tmp )
+ ufs_panic(sb, "ufs_truncate_direct", "internal error");
+ frag4 = ufs_fragnum (frag4);
+ write_seqlock(&ufsi->meta_lock);
+ ufs_data_ptr_clear(uspi, p);
+ write_sequnlock(&ufsi->meta_lock);
+
+ ufs_free_fragments (inode, tmp, frag4);
+ next3:
+
+ UFSD("EXIT: ino %lu\n", inode->i_ino);
+}
+
+static void free_full_branch(struct inode *inode, u64 ind_block, int depth)
+{
+ struct super_block *sb = inode->i_sb;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
+ struct ufs_buffer_head *ubh = ubh_bread(sb, ind_block, uspi->s_bsize);
+ unsigned i;
+
+ if (!ubh)
+ return;
+
+ if (--depth) {
+ for (i = 0; i < uspi->s_apb; i++) {
+ void *p = ubh_get_data_ptr(uspi, ubh, i);
+ u64 block = ufs_data_ptr_to_cpu(sb, p);
+ if (block)
+ free_full_branch(inode, block, depth);
+ }
+ } else {
+ struct to_free ctx = {.inode = inode};
+
+ for (i = 0; i < uspi->s_apb; i++) {
+ void *p = ubh_get_data_ptr(uspi, ubh, i);
+ u64 block = ufs_data_ptr_to_cpu(sb, p);
+ if (block)
+ free_data(&ctx, block, uspi->s_fpb);
+ }
+ free_data(&ctx, 0, 0);
+ }
+
+ ubh_bforget(ubh);
+ ufs_free_blocks(inode, ind_block, uspi->s_fpb);
+}
+
+static void free_branch_tail(struct inode *inode, unsigned from, struct ufs_buffer_head *ubh, int depth)
+{
+ struct super_block *sb = inode->i_sb;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
+ unsigned i;
+
+ if (--depth) {
+ for (i = from; i < uspi->s_apb ; i++) {
+ void *p = ubh_get_data_ptr(uspi, ubh, i);
+ u64 block = ufs_data_ptr_to_cpu(sb, p);
+ if (block) {
+ write_seqlock(&UFS_I(inode)->meta_lock);
+ ufs_data_ptr_clear(uspi, p);
+ write_sequnlock(&UFS_I(inode)->meta_lock);
+ ubh_mark_buffer_dirty(ubh);
+ free_full_branch(inode, block, depth);
+ }
+ }
+ } else {
+ struct to_free ctx = {.inode = inode};
+
+ for (i = from; i < uspi->s_apb; i++) {
+ void *p = ubh_get_data_ptr(uspi, ubh, i);
+ u64 block = ufs_data_ptr_to_cpu(sb, p);
+ if (block) {
+ write_seqlock(&UFS_I(inode)->meta_lock);
+ ufs_data_ptr_clear(uspi, p);
+ write_sequnlock(&UFS_I(inode)->meta_lock);
+ ubh_mark_buffer_dirty(ubh);
+ free_data(&ctx, block, uspi->s_fpb);
+ }
+ }
+ free_data(&ctx, 0, 0);
+ }
+ if (IS_SYNC(inode) && ubh_buffer_dirty(ubh))
+ ubh_sync_block(ubh);
+ ubh_brelse(ubh);
+}
+
+static int ufs_alloc_lastblock(struct inode *inode, loff_t size)
+{
+ int err = 0;
+ struct super_block *sb = inode->i_sb;
+ struct address_space *mapping = inode->i_mapping;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
+ unsigned i, end;
+ sector_t lastfrag;
+ struct page *lastpage;
+ struct buffer_head *bh;
+ u64 phys64;
+
+ lastfrag = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
+
+ if (!lastfrag)
+ goto out;
+
+ lastfrag--;
+
+ lastpage = ufs_get_locked_page(mapping, lastfrag >>
+ (PAGE_CACHE_SHIFT - inode->i_blkbits));
+ if (IS_ERR(lastpage)) {
+ err = -EIO;
+ goto out;
+ }
+
+ end = lastfrag & ((1 << (PAGE_CACHE_SHIFT - inode->i_blkbits)) - 1);
+ bh = page_buffers(lastpage);
+ for (i = 0; i < end; ++i)
+ bh = bh->b_this_page;
+
+
+ err = ufs_getfrag_block(inode, lastfrag, bh, 1);
+
+ if (unlikely(err))
+ goto out_unlock;
+
+ if (buffer_new(bh)) {
+ clear_buffer_new(bh);
+ unmap_underlying_metadata(bh->b_bdev,
+ bh->b_blocknr);
+ /*
+ * we do not zeroize fragment, because of
+ * if it maped to hole, it already contains zeroes
+ */
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ set_page_dirty(lastpage);
+ }
+
+ if (lastfrag >= UFS_IND_FRAGMENT) {
+ end = uspi->s_fpb - ufs_fragnum(lastfrag) - 1;
+ phys64 = bh->b_blocknr + 1;
+ for (i = 0; i < end; ++i) {
+ bh = sb_getblk(sb, i + phys64);
+ lock_buffer(bh);
+ memset(bh->b_data, 0, sb->s_blocksize);
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ unlock_buffer(bh);
+ sync_dirty_buffer(bh);
+ brelse(bh);
+ }
+ }
+out_unlock:
+ ufs_put_locked_page(lastpage);
+out:
+ return err;
+}
+
+static void __ufs_truncate_blocks(struct inode *inode)
+{
+ struct ufs_inode_info *ufsi = UFS_I(inode);
+ struct super_block *sb = inode->i_sb;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
+ unsigned offsets[4];
+ int depth = ufs_block_to_path(inode, DIRECT_BLOCK, offsets);
+ int depth2;
+ unsigned i;
+ struct ufs_buffer_head *ubh[3];
+ void *p;
+ u64 block;
+
+ if (!depth)
+ return;
+
+ /* find the last non-zero in offsets[] */
+ for (depth2 = depth - 1; depth2; depth2--)
+ if (offsets[depth2])
+ break;
+
+ mutex_lock(&ufsi->truncate_mutex);
+ if (depth == 1) {
+ ufs_trunc_direct(inode);
+ offsets[0] = UFS_IND_BLOCK;
+ } else {
+ /* get the blocks that should be partially emptied */
+ p = ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]);
+ for (i = 0; i < depth2; i++) {
+ offsets[i]++; /* next branch is fully freed */
+ block = ufs_data_ptr_to_cpu(sb, p);
+ if (!block)
+ break;
+ ubh[i] = ubh_bread(sb, block, uspi->s_bsize);
+ if (!ubh[i]) {
+ write_seqlock(&ufsi->meta_lock);
+ ufs_data_ptr_clear(uspi, p);
+ write_sequnlock(&ufsi->meta_lock);
+ break;
+ }
+ p = ubh_get_data_ptr(uspi, ubh[i], offsets[i + 1]);
+ }
+ while (i--)
+ free_branch_tail(inode, offsets[i + 1], ubh[i], depth - i - 1);
+ }
+ for (i = offsets[0]; i <= UFS_TIND_BLOCK; i++) {
+ p = ufs_get_direct_data_ptr(uspi, ufsi, i);
+ block = ufs_data_ptr_to_cpu(sb, p);
+ if (block) {
+ write_seqlock(&ufsi->meta_lock);
+ ufs_data_ptr_clear(uspi, p);
+ write_sequnlock(&ufsi->meta_lock);
+ free_full_branch(inode, block, i - UFS_IND_BLOCK + 1);
+ }
}
+ ufsi->i_lastfrag = DIRECT_FRAGMENT;
+ mark_inode_dirty(inode);
+ mutex_unlock(&ufsi->truncate_mutex);
+}
+
+static int ufs_truncate(struct inode *inode, loff_t size)
+{
+ int err = 0;
+
+ UFSD("ENTER: ino %lu, i_size: %llu, old_i_size: %llu\n",
+ inode->i_ino, (unsigned long long)size,
+ (unsigned long long)i_size_read(inode));
+
+ if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
+ S_ISLNK(inode->i_mode)))
+ return -EINVAL;
+ if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
+ return -EPERM;
+
+ err = ufs_alloc_lastblock(inode, size);
+
+ if (err)
+ goto out;
+
+ block_truncate_page(inode->i_mapping, size, ufs_getfrag_block);
+
+ truncate_setsize(inode, size);
+
+ __ufs_truncate_blocks(inode);
+ inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
+ mark_inode_dirty(inode);
+out:
+ UFSD("EXIT: err %d\n", err);
+ return err;
+}
+
+void ufs_truncate_blocks(struct inode *inode)
+{
+ if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
+ S_ISLNK(inode->i_mode)))
+ return;
+ if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
+ return;
+ __ufs_truncate_blocks(inode);
+}
+
+int ufs_setattr(struct dentry *dentry, struct iattr *attr)
+{
+ struct inode *inode = d_inode(dentry);
+ unsigned int ia_valid = attr->ia_valid;
+ int error;
+
+ error = inode_change_ok(inode, attr);
+ if (error)
+ return error;
+
+ if (ia_valid & ATTR_SIZE && attr->ia_size != inode->i_size) {
+ error = ufs_truncate(inode, attr->ia_size);
+ if (error)
+ return error;
+ }
+
+ setattr_copy(inode, attr);
+ mark_inode_dirty(inode);
+ return 0;
}
+
+const struct inode_operations ufs_file_inode_operations = {
+ .setattr = ufs_setattr,
+};
#include "swab.h"
#include "util.h"
-void lock_ufs(struct super_block *sb)
-{
- struct ufs_sb_info *sbi = UFS_SB(sb);
-
- mutex_lock(&sbi->mutex);
- sbi->mutex_owner = current;
-}
-
-void unlock_ufs(struct super_block *sb)
-{
- struct ufs_sb_info *sbi = UFS_SB(sb);
-
- sbi->mutex_owner = NULL;
- mutex_unlock(&sbi->mutex);
-}
-
static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation)
{
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
struct ufs_super_block_third * usb3;
unsigned flags;
- lock_ufs(sb);
mutex_lock(&UFS_SB(sb)->s_lock);
UFSD("ENTER\n");
UFSD("EXIT\n");
mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
return 0;
}
ubh_brelse_uspi (sbi->s_uspi);
kfree (sbi->s_uspi);
- mutex_destroy(&sbi->mutex);
kfree (sbi);
sb->s_fs_info = NULL;
UFSD("EXIT\n");
UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
- mutex_init(&sbi->mutex);
mutex_init(&sbi->s_lock);
spin_lock_init(&sbi->work_lock);
INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
return 0;
failed:
- mutex_destroy(&sbi->mutex);
if (ubh)
ubh_brelse_uspi (uspi);
kfree (uspi);
unsigned flags;
sync_filesystem(sb);
- lock_ufs(sb);
mutex_lock(&UFS_SB(sb)->s_lock);
uspi = UFS_SB(sb)->s_uspi;
flags = UFS_SB(sb)->s_flags;
ufs_set_opt (new_mount_opt, ONERROR_LOCK);
if (!ufs_parse_options (data, &new_mount_opt)) {
mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
return -EINVAL;
}
if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
} else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
pr_err("ufstype can't be changed during remount\n");
mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
return -EINVAL;
}
if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
UFS_SB(sb)->s_mount_opt = new_mount_opt;
mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
return 0;
}
#ifndef CONFIG_UFS_FS_WRITE
pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
return -EINVAL;
#else
if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
pr_err("this ufstype is read-only supported\n");
mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
return -EINVAL;
}
if (!ufs_read_cylinder_structures(sb)) {
pr_err("failed during remounting\n");
mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
return -EPERM;
}
sb->s_flags &= ~MS_RDONLY;
}
UFS_SB(sb)->s_mount_opt = new_mount_opt;
mutex_unlock(&UFS_SB(sb)->s_lock);
- unlock_ufs(sb);
return 0;
}
struct ufs_super_block_third *usb3;
u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
- lock_ufs(sb);
-
+ mutex_lock(&UFS_SB(sb)->s_lock);
usb3 = ubh_get_usb_third(uspi);
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
buf->f_fsid.val[0] = (u32)id;
buf->f_fsid.val[1] = (u32)(id >> 32);
- unlock_ufs(sb);
+ mutex_unlock(&UFS_SB(sb)->s_lock);
return 0;
}
return NULL;
ei->vfs_inode.i_version = 1;
+ seqlock_init(&ei->meta_lock);
+ mutex_init(&ei->truncate_mutex);
return &ei->vfs_inode;
}
+++ /dev/null
-/*
- * linux/fs/ufs/truncate.c
- *
- * Copyright (C) 1998
- * Daniel Pirkl <daniel.pirkl@email.cz>
- * Charles University, Faculty of Mathematics and Physics
- *
- * from
- *
- * linux/fs/ext2/truncate.c
- *
- * Copyright (C) 1992, 1993, 1994, 1995
- * Remy Card (card@masi.ibp.fr)
- * Laboratoire MASI - Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * from
- *
- * linux/fs/minix/truncate.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * Big-endian to little-endian byte-swapping/bitmaps by
- * David S. Miller (davem@caip.rutgers.edu), 1995
- */
-
-/*
- * Real random numbers for secure rm added 94/02/18
- * Idea from Pierre del Perugia <delperug@gla.ecoledoc.ibp.fr>
- */
-
-/*
- * Adoptation to use page cache and UFS2 write support by
- * Evgeniy Dushistov <dushistov@mail.ru>, 2006-2007
- */
-
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/fcntl.h>
-#include <linux/time.h>
-#include <linux/stat.h>
-#include <linux/string.h>
-#include <linux/buffer_head.h>
-#include <linux/blkdev.h>
-#include <linux/sched.h>
-
-#include "ufs_fs.h"
-#include "ufs.h"
-#include "swab.h"
-#include "util.h"
-
-/*
- * Secure deletion currently doesn't work. It interacts very badly
- * with buffers shared with memory mappings, and for that reason
- * can't be done in the truncate() routines. It should instead be
- * done separately in "release()" before calling the truncate routines
- * that will release the actual file blocks.
- *
- * Linus
- */
-
-#define DIRECT_BLOCK ((inode->i_size + uspi->s_bsize - 1) >> uspi->s_bshift)
-#define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift)
-
-
-static int ufs_trunc_direct(struct inode *inode)
-{
- struct ufs_inode_info *ufsi = UFS_I(inode);
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
- void *p;
- u64 frag1, frag2, frag3, frag4, block1, block2;
- unsigned frag_to_free, free_count;
- unsigned i, tmp;
- int retry;
-
- UFSD("ENTER: ino %lu\n", inode->i_ino);
-
- sb = inode->i_sb;
- uspi = UFS_SB(sb)->s_uspi;
-
- frag_to_free = 0;
- free_count = 0;
- retry = 0;
-
- frag1 = DIRECT_FRAGMENT;
- frag4 = min_t(u64, UFS_NDIR_FRAGMENT, ufsi->i_lastfrag);
- frag2 = ((frag1 & uspi->s_fpbmask) ? ((frag1 | uspi->s_fpbmask) + 1) : frag1);
- frag3 = frag4 & ~uspi->s_fpbmask;
- block1 = block2 = 0;
- if (frag2 > frag3) {
- frag2 = frag4;
- frag3 = frag4 = 0;
- } else if (frag2 < frag3) {
- block1 = ufs_fragstoblks (frag2);
- block2 = ufs_fragstoblks (frag3);
- }
-
- UFSD("ino %lu, frag1 %llu, frag2 %llu, block1 %llu, block2 %llu,"
- " frag3 %llu, frag4 %llu\n", inode->i_ino,
- (unsigned long long)frag1, (unsigned long long)frag2,
- (unsigned long long)block1, (unsigned long long)block2,
- (unsigned long long)frag3, (unsigned long long)frag4);
-
- if (frag1 >= frag2)
- goto next1;
-
- /*
- * Free first free fragments
- */
- p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag1));
- tmp = ufs_data_ptr_to_cpu(sb, p);
- if (!tmp )
- ufs_panic (sb, "ufs_trunc_direct", "internal error");
- frag2 -= frag1;
- frag1 = ufs_fragnum (frag1);
-
- ufs_free_fragments(inode, tmp + frag1, frag2);
- mark_inode_dirty(inode);
- frag_to_free = tmp + frag1;
-
-next1:
- /*
- * Free whole blocks
- */
- for (i = block1 ; i < block2; i++) {
- p = ufs_get_direct_data_ptr(uspi, ufsi, i);
- tmp = ufs_data_ptr_to_cpu(sb, p);
- if (!tmp)
- continue;
- ufs_data_ptr_clear(uspi, p);
-
- if (free_count == 0) {
- frag_to_free = tmp;
- free_count = uspi->s_fpb;
- } else if (free_count > 0 && frag_to_free == tmp - free_count)
- free_count += uspi->s_fpb;
- else {
- ufs_free_blocks (inode, frag_to_free, free_count);
- frag_to_free = tmp;
- free_count = uspi->s_fpb;
- }
- mark_inode_dirty(inode);
- }
-
- if (free_count > 0)
- ufs_free_blocks (inode, frag_to_free, free_count);
-
- if (frag3 >= frag4)
- goto next3;
-
- /*
- * Free last free fragments
- */
- p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag3));
- tmp = ufs_data_ptr_to_cpu(sb, p);
- if (!tmp )
- ufs_panic(sb, "ufs_truncate_direct", "internal error");
- frag4 = ufs_fragnum (frag4);
- ufs_data_ptr_clear(uspi, p);
-
- ufs_free_fragments (inode, tmp, frag4);
- mark_inode_dirty(inode);
- next3:
-
- UFSD("EXIT: ino %lu\n", inode->i_ino);
- return retry;
-}
-
-
-static int ufs_trunc_indirect(struct inode *inode, u64 offset, void *p)
-{
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
- struct ufs_buffer_head * ind_ubh;
- void *ind;
- u64 tmp, indirect_block, i, frag_to_free;
- unsigned free_count;
- int retry;
-
- UFSD("ENTER: ino %lu, offset %llu, p: %p\n",
- inode->i_ino, (unsigned long long)offset, p);
-
- BUG_ON(!p);
-
- sb = inode->i_sb;
- uspi = UFS_SB(sb)->s_uspi;
-
- frag_to_free = 0;
- free_count = 0;
- retry = 0;
-
- tmp = ufs_data_ptr_to_cpu(sb, p);
- if (!tmp)
- return 0;
- ind_ubh = ubh_bread(sb, tmp, uspi->s_bsize);
- if (tmp != ufs_data_ptr_to_cpu(sb, p)) {
- ubh_brelse (ind_ubh);
- return 1;
- }
- if (!ind_ubh) {
- ufs_data_ptr_clear(uspi, p);
- return 0;
- }
-
- indirect_block = (DIRECT_BLOCK > offset) ? (DIRECT_BLOCK - offset) : 0;
- for (i = indirect_block; i < uspi->s_apb; i++) {
- ind = ubh_get_data_ptr(uspi, ind_ubh, i);
- tmp = ufs_data_ptr_to_cpu(sb, ind);
- if (!tmp)
- continue;
-
- ufs_data_ptr_clear(uspi, ind);
- ubh_mark_buffer_dirty(ind_ubh);
- if (free_count == 0) {
- frag_to_free = tmp;
- free_count = uspi->s_fpb;
- } else if (free_count > 0 && frag_to_free == tmp - free_count)
- free_count += uspi->s_fpb;
- else {
- ufs_free_blocks (inode, frag_to_free, free_count);
- frag_to_free = tmp;
- free_count = uspi->s_fpb;
- }
-
- mark_inode_dirty(inode);
- }
-
- if (free_count > 0) {
- ufs_free_blocks (inode, frag_to_free, free_count);
- }
- for (i = 0; i < uspi->s_apb; i++)
- if (!ufs_is_data_ptr_zero(uspi,
- ubh_get_data_ptr(uspi, ind_ubh, i)))
- break;
- if (i >= uspi->s_apb) {
- tmp = ufs_data_ptr_to_cpu(sb, p);
- ufs_data_ptr_clear(uspi, p);
-
- ufs_free_blocks (inode, tmp, uspi->s_fpb);
- mark_inode_dirty(inode);
- ubh_bforget(ind_ubh);
- ind_ubh = NULL;
- }
- if (IS_SYNC(inode) && ind_ubh && ubh_buffer_dirty(ind_ubh))
- ubh_sync_block(ind_ubh);
- ubh_brelse (ind_ubh);
-
- UFSD("EXIT: ino %lu\n", inode->i_ino);
-
- return retry;
-}
-
-static int ufs_trunc_dindirect(struct inode *inode, u64 offset, void *p)
-{
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
- struct ufs_buffer_head *dind_bh;
- u64 i, tmp, dindirect_block;
- void *dind;
- int retry = 0;
-
- UFSD("ENTER: ino %lu\n", inode->i_ino);
-
- sb = inode->i_sb;
- uspi = UFS_SB(sb)->s_uspi;
-
- dindirect_block = (DIRECT_BLOCK > offset)
- ? ((DIRECT_BLOCK - offset) >> uspi->s_apbshift) : 0;
- retry = 0;
-
- tmp = ufs_data_ptr_to_cpu(sb, p);
- if (!tmp)
- return 0;
- dind_bh = ubh_bread(sb, tmp, uspi->s_bsize);
- if (tmp != ufs_data_ptr_to_cpu(sb, p)) {
- ubh_brelse (dind_bh);
- return 1;
- }
- if (!dind_bh) {
- ufs_data_ptr_clear(uspi, p);
- return 0;
- }
-
- for (i = dindirect_block ; i < uspi->s_apb ; i++) {
- dind = ubh_get_data_ptr(uspi, dind_bh, i);
- tmp = ufs_data_ptr_to_cpu(sb, dind);
- if (!tmp)
- continue;
- retry |= ufs_trunc_indirect (inode, offset + (i << uspi->s_apbshift), dind);
- ubh_mark_buffer_dirty(dind_bh);
- }
-
- for (i = 0; i < uspi->s_apb; i++)
- if (!ufs_is_data_ptr_zero(uspi,
- ubh_get_data_ptr(uspi, dind_bh, i)))
- break;
- if (i >= uspi->s_apb) {
- tmp = ufs_data_ptr_to_cpu(sb, p);
- ufs_data_ptr_clear(uspi, p);
-
- ufs_free_blocks(inode, tmp, uspi->s_fpb);
- mark_inode_dirty(inode);
- ubh_bforget(dind_bh);
- dind_bh = NULL;
- }
- if (IS_SYNC(inode) && dind_bh && ubh_buffer_dirty(dind_bh))
- ubh_sync_block(dind_bh);
- ubh_brelse (dind_bh);
-
- UFSD("EXIT: ino %lu\n", inode->i_ino);
-
- return retry;
-}
-
-static int ufs_trunc_tindirect(struct inode *inode)
-{
- struct super_block *sb = inode->i_sb;
- struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
- struct ufs_inode_info *ufsi = UFS_I(inode);
- struct ufs_buffer_head * tind_bh;
- u64 tindirect_block, tmp, i;
- void *tind, *p;
- int retry;
-
- UFSD("ENTER: ino %lu\n", inode->i_ino);
-
- retry = 0;
-
- tindirect_block = (DIRECT_BLOCK > (UFS_NDADDR + uspi->s_apb + uspi->s_2apb))
- ? ((DIRECT_BLOCK - UFS_NDADDR - uspi->s_apb - uspi->s_2apb) >> uspi->s_2apbshift) : 0;
-
- p = ufs_get_direct_data_ptr(uspi, ufsi, UFS_TIND_BLOCK);
- if (!(tmp = ufs_data_ptr_to_cpu(sb, p)))
- return 0;
- tind_bh = ubh_bread (sb, tmp, uspi->s_bsize);
- if (tmp != ufs_data_ptr_to_cpu(sb, p)) {
- ubh_brelse (tind_bh);
- return 1;
- }
- if (!tind_bh) {
- ufs_data_ptr_clear(uspi, p);
- return 0;
- }
-
- for (i = tindirect_block ; i < uspi->s_apb ; i++) {
- tind = ubh_get_data_ptr(uspi, tind_bh, i);
- retry |= ufs_trunc_dindirect(inode, UFS_NDADDR +
- uspi->s_apb + ((i + 1) << uspi->s_2apbshift), tind);
- ubh_mark_buffer_dirty(tind_bh);
- }
- for (i = 0; i < uspi->s_apb; i++)
- if (!ufs_is_data_ptr_zero(uspi,
- ubh_get_data_ptr(uspi, tind_bh, i)))
- break;
- if (i >= uspi->s_apb) {
- tmp = ufs_data_ptr_to_cpu(sb, p);
- ufs_data_ptr_clear(uspi, p);
-
- ufs_free_blocks(inode, tmp, uspi->s_fpb);
- mark_inode_dirty(inode);
- ubh_bforget(tind_bh);
- tind_bh = NULL;
- }
- if (IS_SYNC(inode) && tind_bh && ubh_buffer_dirty(tind_bh))
- ubh_sync_block(tind_bh);
- ubh_brelse (tind_bh);
-
- UFSD("EXIT: ino %lu\n", inode->i_ino);
- return retry;
-}
-
-static int ufs_alloc_lastblock(struct inode *inode)
-{
- int err = 0;
- struct super_block *sb = inode->i_sb;
- struct address_space *mapping = inode->i_mapping;
- struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
- unsigned i, end;
- sector_t lastfrag;
- struct page *lastpage;
- struct buffer_head *bh;
- u64 phys64;
-
- lastfrag = (i_size_read(inode) + uspi->s_fsize - 1) >> uspi->s_fshift;
-
- if (!lastfrag)
- goto out;
-
- lastfrag--;
-
- lastpage = ufs_get_locked_page(mapping, lastfrag >>
- (PAGE_CACHE_SHIFT - inode->i_blkbits));
- if (IS_ERR(lastpage)) {
- err = -EIO;
- goto out;
- }
-
- end = lastfrag & ((1 << (PAGE_CACHE_SHIFT - inode->i_blkbits)) - 1);
- bh = page_buffers(lastpage);
- for (i = 0; i < end; ++i)
- bh = bh->b_this_page;
-
-
- err = ufs_getfrag_block(inode, lastfrag, bh, 1);
-
- if (unlikely(err))
- goto out_unlock;
-
- if (buffer_new(bh)) {
- clear_buffer_new(bh);
- unmap_underlying_metadata(bh->b_bdev,
- bh->b_blocknr);
- /*
- * we do not zeroize fragment, because of
- * if it maped to hole, it already contains zeroes
- */
- set_buffer_uptodate(bh);
- mark_buffer_dirty(bh);
- set_page_dirty(lastpage);
- }
-
- if (lastfrag >= UFS_IND_FRAGMENT) {
- end = uspi->s_fpb - ufs_fragnum(lastfrag) - 1;
- phys64 = bh->b_blocknr + 1;
- for (i = 0; i < end; ++i) {
- bh = sb_getblk(sb, i + phys64);
- lock_buffer(bh);
- memset(bh->b_data, 0, sb->s_blocksize);
- set_buffer_uptodate(bh);
- mark_buffer_dirty(bh);
- unlock_buffer(bh);
- sync_dirty_buffer(bh);
- brelse(bh);
- }
- }
-out_unlock:
- ufs_put_locked_page(lastpage);
-out:
- return err;
-}
-
-int ufs_truncate(struct inode *inode, loff_t old_i_size)
-{
- struct ufs_inode_info *ufsi = UFS_I(inode);
- struct super_block *sb = inode->i_sb;
- struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
- int retry, err = 0;
-
- UFSD("ENTER: ino %lu, i_size: %llu, old_i_size: %llu\n",
- inode->i_ino, (unsigned long long)i_size_read(inode),
- (unsigned long long)old_i_size);
-
- if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
- S_ISLNK(inode->i_mode)))
- return -EINVAL;
- if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
- return -EPERM;
-
- err = ufs_alloc_lastblock(inode);
-
- if (err) {
- i_size_write(inode, old_i_size);
- goto out;
- }
-
- block_truncate_page(inode->i_mapping, inode->i_size, ufs_getfrag_block);
-
- while (1) {
- retry = ufs_trunc_direct(inode);
- retry |= ufs_trunc_indirect(inode, UFS_IND_BLOCK,
- ufs_get_direct_data_ptr(uspi, ufsi,
- UFS_IND_BLOCK));
- retry |= ufs_trunc_dindirect(inode, UFS_IND_BLOCK + uspi->s_apb,
- ufs_get_direct_data_ptr(uspi, ufsi,
- UFS_DIND_BLOCK));
- retry |= ufs_trunc_tindirect (inode);
- if (!retry)
- break;
- if (IS_SYNC(inode) && (inode->i_state & I_DIRTY))
- ufs_sync_inode (inode);
- yield();
- }
-
- inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
- ufsi->i_lastfrag = DIRECT_FRAGMENT;
- mark_inode_dirty(inode);
-out:
- UFSD("EXIT: err %d\n", err);
- return err;
-}
-
-int ufs_setattr(struct dentry *dentry, struct iattr *attr)
-{
- struct inode *inode = d_inode(dentry);
- unsigned int ia_valid = attr->ia_valid;
- int error;
-
- error = inode_change_ok(inode, attr);
- if (error)
- return error;
-
- if (ia_valid & ATTR_SIZE && attr->ia_size != inode->i_size) {
- loff_t old_i_size = inode->i_size;
-
- /* XXX(truncate): truncate_setsize should be called last */
- truncate_setsize(inode, attr->ia_size);
-
- lock_ufs(inode->i_sb);
- error = ufs_truncate(inode, old_i_size);
- unlock_ufs(inode->i_sb);
- if (error)
- return error;
- }
-
- setattr_copy(inode, attr);
- mark_inode_dirty(inode);
- return 0;
-}
-
-const struct inode_operations ufs_file_inode_operations = {
- .setattr = ufs_setattr,
-};
unsigned s_cgno[UFS_MAX_GROUP_LOADED];
unsigned short s_cg_loaded;
unsigned s_mount_opt;
- struct mutex mutex;
- struct task_struct *mutex_owner;
struct super_block *sb;
int work_queued; /* non-zero if the delayed work is queued */
struct delayed_work sync_work; /* FS sync delayed work */
__u32 i_oeftflag;
__u16 i_osync;
__u64 i_lastfrag;
+ seqlock_t meta_lock;
+ struct mutex truncate_mutex;
__u32 i_dir_start_lookup;
struct inode vfs_inode;
};
extern int ufs_write_inode (struct inode *, struct writeback_control *);
extern int ufs_sync_inode (struct inode *);
extern void ufs_evict_inode (struct inode *);
-extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create);
+extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
/* namei.c */
extern const struct file_operations ufs_dir_operations;
extern const struct inode_operations ufs_fast_symlink_inode_operations;
extern const struct inode_operations ufs_symlink_inode_operations;
-/* truncate.c */
-extern int ufs_truncate (struct inode *, loff_t);
-extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
-
static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
{
return sb->s_fs_info;
return do_div(b, uspi->s_fpg);
}
-extern void lock_ufs(struct super_block *sb);
-extern void unlock_ufs(struct super_block *sb);
-
#endif /* _UFS_UFS_H */
* We may pass freeze protection with a transaction. So tell lockdep
* we released it.
*/
- rwsem_release(&ioend->io_inode->i_sb->s_writers.lock_map[SB_FREEZE_FS-1],
- 1, _THIS_IP_);
+ __sb_writers_release(ioend->io_inode->i_sb, SB_FREEZE_FS);
/*
* We hand off the transaction to the completion thread now, so
* clear the flag here.
* Similarly for freeze protection.
*/
current_set_flags_nested(&tp->t_pflags, PF_FSTRANS);
- rwsem_acquire_read(&VFS_I(ip)->i_sb->s_writers.lock_map[SB_FREEZE_FS-1],
- 0, 1, _THIS_IP_);
+ __sb_writers_acquired(VFS_I(ip)->i_sb, SB_FREEZE_FS);
return xfs_setfilesize(ip, tp, ioend->io_offset, ioend->io_size);
}
{0x1002, 0x6610, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_NEW_MEMMAP}, \
{0x1002, 0x6611, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_NEW_MEMMAP}, \
{0x1002, 0x6613, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_NEW_MEMMAP}, \
+ {0x1002, 0x6617, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
{0x1002, 0x6620, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
{0x1002, 0x6621, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
{0x1002, 0x6623, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_OLAND|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
#ifndef _LINUX_FS_H
#define _LINUX_FS_H
-
#include <linux/linkage.h>
#include <linux/wait.h>
#include <linux/kdev_t.h>
#include <linux/lockdep.h>
#include <linux/percpu-rwsem.h>
#include <linux/blk_types.h>
+#include <linux/workqueue.h>
+#include <linux/percpu-rwsem.h>
#include <asm/byteorder.h>
#include <uapi/linux/fs.h>
#define SB_FREEZE_LEVELS (SB_FREEZE_COMPLETE - 1)
struct sb_writers {
- /* Counters for counting writers at each level */
- struct percpu_counter counter[SB_FREEZE_LEVELS];
- wait_queue_head_t wait; /* queue for waiting for
- writers / faults to finish */
- int frozen; /* Is sb frozen? */
- wait_queue_head_t wait_unfrozen; /* queue for waiting for
- sb to be thawed */
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
- struct lockdep_map lock_map[SB_FREEZE_LEVELS];
-#endif
+ int frozen; /* Is sb frozen? */
+ wait_queue_head_t wait_unfrozen; /* for get_super_thawed() */
+ struct percpu_rw_semaphore rw_sem[SB_FREEZE_LEVELS];
};
struct super_block {
struct list_lru s_dentry_lru ____cacheline_aligned_in_smp;
struct list_lru s_inode_lru ____cacheline_aligned_in_smp;
struct rcu_head rcu;
+ struct work_struct destroy_work;
struct mutex s_sync_lock; /* sync serialisation lock */
void __sb_end_write(struct super_block *sb, int level);
int __sb_start_write(struct super_block *sb, int level, bool wait);
+#define __sb_writers_acquired(sb, lev) \
+ percpu_rwsem_acquire(&(sb)->s_writers.rw_sem[(lev)-1], 1, _THIS_IP_)
+#define __sb_writers_release(sb, lev) \
+ percpu_rwsem_release(&(sb)->s_writers.rw_sem[(lev)-1], 1, _THIS_IP_)
+
/**
* sb_end_write - drop write access to a superblock
* @sb: the super we wrote to
};
extern void percpu_down_read(struct percpu_rw_semaphore *);
+extern int percpu_down_read_trylock(struct percpu_rw_semaphore *);
extern void percpu_up_read(struct percpu_rw_semaphore *);
extern void percpu_down_write(struct percpu_rw_semaphore *);
__percpu_init_rwsem(brw, #brw, &rwsem_key); \
})
+
+#define percpu_rwsem_is_held(sem) lockdep_is_held(&(sem)->rw_sem)
+
+static inline void percpu_rwsem_release(struct percpu_rw_semaphore *sem,
+ bool read, unsigned long ip)
+{
+ lock_release(&sem->rw_sem.dep_map, 1, ip);
+#ifdef CONFIG_RWSEM_SPIN_ON_OWNER
+ if (!read)
+ sem->rw_sem.owner = NULL;
+#endif
+}
+
+static inline void percpu_rwsem_acquire(struct percpu_rw_semaphore *sem,
+ bool read, unsigned long ip)
+{
+ lock_acquire(&sem->rw_sem.dep_map, 0, 1, read, 1, NULL, ip);
+}
+
#endif
*
* PHY drivers may accept clones of transmitted packets for
* timestamping via their phy_driver.txtstamp method. These drivers
- * must call this function to return the skb back to the stack, with
- * or without a timestamp.
+ * must call this function to return the skb back to the stack with a
+ * timestamp.
*
* @skb: clone of the the original outgoing packet
- * @hwtstamps: hardware time stamps, may be NULL if not available
+ * @hwtstamps: hardware time stamps
*
*/
void skb_complete_tx_timestamp(struct sk_buff *skb,
menuconfig CGROUPS
bool "Control Group support"
select KERNFS
- select PERCPU_RWSEM
help
This option adds support for grouping sets of processes together, for
use with process control subsystems such as Cpusets, CFS, memory
ipc_rcu_free(head);
}
+/*
+ * spin_unlock_wait() and !spin_is_locked() are not memory barriers, they
+ * are only control barriers.
+ * The code must pair with spin_unlock(&sem->lock) or
+ * spin_unlock(&sem_perm.lock), thus just the control barrier is insufficient.
+ *
+ * smp_rmb() is sufficient, as writes cannot pass the control barrier.
+ */
+#define ipc_smp_acquire__after_spin_is_unlocked() smp_rmb()
+
/*
* Wait until all currently ongoing simple ops have completed.
* Caller must own sem_perm.lock.
sem = sma->sem_base + i;
spin_unlock_wait(&sem->lock);
}
+ ipc_smp_acquire__after_spin_is_unlocked();
}
/*
/* Then check that the global lock is free */
if (!spin_is_locked(&sma->sem_perm.lock)) {
/*
- * The ipc object lock check must be visible on all
- * cores before rechecking the complex count. Otherwise
- * we can race with another thread that does:
+ * We need a memory barrier with acquire semantics,
+ * otherwise we can race with another thread that does:
* complex_count++;
* spin_unlock(sem_perm.lock);
*/
- smp_rmb();
+ ipc_smp_acquire__after_spin_is_unlocked();
/*
* Now repeat the test of complex_count:
rcu_read_lock();
un = list_entry_rcu(ulp->list_proc.next,
struct sem_undo, list_proc);
- if (&un->list_proc == &ulp->list_proc)
- semid = -1;
- else
- semid = un->semid;
+ if (&un->list_proc == &ulp->list_proc) {
+ /*
+ * We must wait for freeary() before freeing this ulp,
+ * in case we raced with last sem_undo. There is a small
+ * possibility where we exit while freeary() didn't
+ * finish unlocking sem_undo_list.
+ */
+ spin_unlock_wait(&ulp->lock);
+ rcu_read_unlock();
+ break;
+ }
+ spin_lock(&ulp->lock);
+ semid = un->semid;
+ spin_unlock(&ulp->lock);
+ /* exit_sem raced with IPC_RMID, nothing to do */
if (semid == -1) {
rcu_read_unlock();
- break;
+ continue;
}
- sma = sem_obtain_object_check(tsk->nsproxy->ipc_ns, un->semid);
+ sma = sem_obtain_object_check(tsk->nsproxy->ipc_ns, semid);
/* exit_sem raced with IPC_RMID, nothing to do */
if (IS_ERR(sma)) {
rcu_read_unlock();
ipc_assert_locked_object(&sma->sem_perm);
list_del(&un->list_id);
- spin_lock(&ulp->lock);
+ /* we are the last process using this ulp, acquiring ulp->lock
+ * isn't required. Besides that, we are also protected against
+ * IPC_RMID as we hold sma->sem_perm lock now
+ */
list_del_rcu(&un->list_proc);
- spin_unlock(&ulp->lock);
/* perform adjustments registered in un */
for (i = 0; i < sma->sem_nsems; i++) {
perf_pmu_disable(event->pmu);
- event->tstamp_running += tstamp - event->tstamp_stopped;
-
perf_set_shadow_time(event, ctx, tstamp);
perf_log_itrace_start(event);
goto out;
}
+ event->tstamp_running += tstamp - event->tstamp_stopped;
+
if (!is_software_event(event))
cpuctx->active_oncpu++;
if (!ctx->nr_active++)
perf_event_for_each_child(sibling, func);
}
-static int perf_event_period(struct perf_event *event, u64 __user *arg)
-{
- struct perf_event_context *ctx = event->ctx;
- int ret = 0, active;
+struct period_event {
+ struct perf_event *event;
u64 value;
+};
- if (!is_sampling_event(event))
- return -EINVAL;
-
- if (copy_from_user(&value, arg, sizeof(value)))
- return -EFAULT;
-
- if (!value)
- return -EINVAL;
+static int __perf_event_period(void *info)
+{
+ struct period_event *pe = info;
+ struct perf_event *event = pe->event;
+ struct perf_event_context *ctx = event->ctx;
+ u64 value = pe->value;
+ bool active;
- raw_spin_lock_irq(&ctx->lock);
+ raw_spin_lock(&ctx->lock);
if (event->attr.freq) {
- if (value > sysctl_perf_event_sample_rate) {
- ret = -EINVAL;
- goto unlock;
- }
-
event->attr.sample_freq = value;
} else {
event->attr.sample_period = value;
event->pmu->start(event, PERF_EF_RELOAD);
perf_pmu_enable(ctx->pmu);
}
+ raw_spin_unlock(&ctx->lock);
-unlock:
+ return 0;
+}
+
+static int perf_event_period(struct perf_event *event, u64 __user *arg)
+{
+ struct period_event pe = { .event = event, };
+ struct perf_event_context *ctx = event->ctx;
+ struct task_struct *task;
+ u64 value;
+
+ if (!is_sampling_event(event))
+ return -EINVAL;
+
+ if (copy_from_user(&value, arg, sizeof(value)))
+ return -EFAULT;
+
+ if (!value)
+ return -EINVAL;
+
+ if (event->attr.freq && value > sysctl_perf_event_sample_rate)
+ return -EINVAL;
+
+ task = ctx->task;
+ pe.value = value;
+
+ if (!task) {
+ cpu_function_call(event->cpu, __perf_event_period, &pe);
+ return 0;
+ }
+
+retry:
+ if (!task_function_call(task, __perf_event_period, &pe))
+ return 0;
+
+ raw_spin_lock_irq(&ctx->lock);
+ if (ctx->is_active) {
+ raw_spin_unlock_irq(&ctx->lock);
+ task = ctx->task;
+ goto retry;
+ }
+
+ __perf_event_period(&pe);
raw_spin_unlock_irq(&ctx->lock);
- return ret;
+ return 0;
}
static const struct file_operations perf_fops;
* to user-space before waking everybody up.
*/
+static inline struct fasync_struct **perf_event_fasync(struct perf_event *event)
+{
+ /* only the parent has fasync state */
+ if (event->parent)
+ event = event->parent;
+ return &event->fasync;
+}
+
void perf_event_wakeup(struct perf_event *event)
{
ring_buffer_wakeup(event);
if (event->pending_kill) {
- kill_fasync(&event->fasync, SIGIO, event->pending_kill);
+ kill_fasync(perf_event_fasync(event), SIGIO, event->pending_kill);
event->pending_kill = 0;
}
}
else
perf_event_output(event, data, regs);
- if (event->fasync && event->pending_kill) {
+ if (*perf_event_fasync(event) && event->pending_kill) {
event->pending_wakeup = 1;
irq_work_queue(&event->pending);
}
rb->aux_priv = NULL;
}
- for (pg = 0; pg < rb->aux_nr_pages; pg++)
- rb_free_aux_page(rb, pg);
+ if (rb->aux_nr_pages) {
+ for (pg = 0; pg < rb->aux_nr_pages; pg++)
+ rb_free_aux_page(rb, pg);
- kfree(rb->aux_pages);
- rb->aux_nr_pages = 0;
+ kfree(rb->aux_pages);
+ rb->aux_nr_pages = 0;
+ }
}
void rb_free_aux(struct ring_buffer *rb)
-obj-y += mutex.o semaphore.o rwsem.o
+obj-y += mutex.o semaphore.o rwsem.o percpu-rwsem.o
ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_lockdep.o = $(CC_FLAGS_FTRACE)
obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock_debug.o
obj-$(CONFIG_RWSEM_GENERIC_SPINLOCK) += rwsem-spinlock.o
obj-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += rwsem-xadd.o
-obj-$(CONFIG_PERCPU_RWSEM) += percpu-rwsem.o
obj-$(CONFIG_QUEUED_RWLOCKS) += qrwlock.o
obj-$(CONFIG_LOCK_TORTURE_TEST) += locktorture.o
__up_read(&brw->rw_sem);
}
+int percpu_down_read_trylock(struct percpu_rw_semaphore *brw)
+{
+ if (unlikely(!update_fast_ctr(brw, +1))) {
+ if (!__down_read_trylock(&brw->rw_sem))
+ return 0;
+ atomic_inc(&brw->slow_read_ctr);
+ __up_read(&brw->rw_sem);
+ }
+
+ rwsem_acquire_read(&brw->rw_sem.dep_map, 0, 1, _RET_IP_);
+ return 1;
+}
+
void percpu_up_read(struct percpu_rw_semaphore *brw)
{
rwsem_release(&brw->rw_sem.dep_map, 1, _RET_IP_);
#include <linux/hash.h>
#include <linux/bootmem.h>
+#include <linux/debug_locks.h>
/*
* Implement paravirt qspinlocks; the general idea is to halt the vcpus instead
{
struct __qspinlock *l = (void *)lock;
struct pv_node *node;
+ u8 lockval = cmpxchg(&l->locked, _Q_LOCKED_VAL, 0);
/*
* We must not unlock if SLOW, because in that case we must first
* unhash. Otherwise it would be possible to have multiple @lock
* entries, which would be BAD.
*/
- if (likely(cmpxchg(&l->locked, _Q_LOCKED_VAL, 0) == _Q_LOCKED_VAL))
+ if (likely(lockval == _Q_LOCKED_VAL))
return;
+ if (unlikely(lockval != _Q_SLOW_VAL)) {
+ if (debug_locks_silent)
+ return;
+ WARN(1, "pvqspinlock: lock %p has corrupted value 0x%x!\n", lock, atomic_read(&lock->val));
+ return;
+ }
+
/*
* Since the above failed to release, this must be the SLOW path.
* Therefore start by looking up the blocked node and unhashing it.
config STMP_DEVICE
bool
-config PERCPU_RWSEM
- bool
-
config ARCH_USE_CMPXCHG_LOCKREF
bool
extern struct cma cma_areas[MAX_CMA_AREAS];
extern unsigned cma_area_count;
-static unsigned long cma_bitmap_maxno(struct cma *cma)
+static inline unsigned long cma_bitmap_maxno(struct cma *cma)
{
return cma->count >> cma->order_per_bit;
}
* This file contains shadow memory manipulation code.
*
* Copyright (c) 2014 Samsung Electronics Co., Ltd.
- * Author: Andrey Ryabinin <a.ryabinin@samsung.com>
+ * Author: Andrey Ryabinin <ryabinin.a.a@gmail.com>
*
* Some of code borrowed from https://github.com/xairy/linux by
* Andrey Konovalov <adech.fo@gmail.com>
* This file contains error reporting code.
*
* Copyright (c) 2014 Samsung Electronics Co., Ltd.
- * Author: Andrey Ryabinin <a.ryabinin@samsung.com>
+ * Author: Andrey Ryabinin <ryabinin.a.a@gmail.com>
*
* Some of code borrowed from https://github.com/xairy/linux by
* Andrey Konovalov <adech.fo@gmail.com>
}
if (!PageHuge(p) && PageTransHuge(hpage)) {
- if (unlikely(split_huge_page(hpage))) {
- pr_err("MCE: %#lx: thp split failed\n", pfn);
+ if (!PageAnon(hpage) || unlikely(split_huge_page(hpage))) {
+ if (!PageAnon(hpage))
+ pr_err("MCE: %#lx: non anonymous thp\n", pfn);
+ else
+ pr_err("MCE: %#lx: thp split failed\n", pfn);
if (TestClearPageHWPoison(p))
atomic_long_sub(nr_pages, &num_poisoned_pages);
put_page(p);
*/
ret = __get_any_page(page, pfn, 0);
if (!PageLRU(page)) {
+ /* Drop page reference which is from __get_any_page() */
+ put_page(page);
pr_info("soft_offline: %#lx: unknown non LRU page type %lx\n",
pfn, page->flags);
return -EIO;
unlock_page(hpage);
ret = isolate_huge_page(hpage, &pagelist);
- if (ret) {
- /*
- * get_any_page() and isolate_huge_page() takes a refcount each,
- * so need to drop one here.
- */
- put_page(hpage);
- } else {
+ /*
+ * get_any_page() and isolate_huge_page() takes a refcount each,
+ * so need to drop one here.
+ */
+ put_page(hpage);
+ if (!ret) {
pr_info("soft offline: %#lx hugepage failed to isolate\n", pfn);
return -EBUSY;
}
/* create new memmap entry */
firmware_map_add_hotplug(start, start + size, "System RAM");
+ memblock_add_node(start, size, nid);
goto out;
/* remove memmap entry */
firmware_map_remove(start, start + size, "System RAM");
+ memblock_free(start, size);
+ memblock_remove(start, size);
arch_remove_memory(start, size);
{
unsigned long zone_start_pfn, zone_end_pfn;
+ /* When hotadd a new node, the node should be empty */
+ if (!node_start_pfn && !node_end_pfn)
+ return 0;
+
/* Get the start and end of the zone */
zone_start_pfn = arch_zone_lowest_possible_pfn[zone_type];
zone_end_pfn = arch_zone_highest_possible_pfn[zone_type];
unsigned long zone_high = arch_zone_highest_possible_pfn[zone_type];
unsigned long zone_start_pfn, zone_end_pfn;
+ /* When hotadd a new node, the node should be empty */
+ if (!node_start_pfn && !node_end_pfn)
+ return 0;
+
zone_start_pfn = clamp(node_start_pfn, zone_low, zone_high);
zone_end_pfn = clamp(node_end_pfn, zone_low, zone_high);
* @bat_priv: the bat priv with all the soft interface information
* @skb: packet to check
* @hdr_size: size of the encapsulation header
+ *
+ * Returns true if the packet was snooped and consumed by DAT. False if the
+ * packet has to be delivered to the interface
*/
bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
struct sk_buff *skb, int hdr_size)
uint16_t type;
__be32 ip_src, ip_dst;
uint8_t *hw_src, *hw_dst;
- bool ret = false;
+ bool dropped = false;
unsigned short vid;
if (!atomic_read(&bat_priv->distributed_arp_table))
/* if this REPLY is directed to a client of mine, let's deliver the
* packet to the interface
*/
- ret = !batadv_is_my_client(bat_priv, hw_dst, vid);
+ dropped = !batadv_is_my_client(bat_priv, hw_dst, vid);
+
+ /* if this REPLY is sent on behalf of a client of mine, let's drop the
+ * packet because the client will reply by itself
+ */
+ dropped |= batadv_is_my_client(bat_priv, hw_src, vid);
out:
- if (ret)
+ if (dropped)
kfree_skb(skb);
- /* if ret == false -> packet has to be delivered to the interface */
- return ret;
+ /* if dropped == false -> deliver to the interface */
+ return dropped;
}
/**
INIT_HLIST_NODE(&gw_node->list);
gw_node->orig_node = orig_node;
+ gw_node->bandwidth_down = ntohl(gateway->bandwidth_down);
+ gw_node->bandwidth_up = ntohl(gateway->bandwidth_up);
atomic_set(&gw_node->refcount, 1);
spin_lock_bh(&bat_priv->gw.list_lock);
*/
void batadv_softif_vlan_free_ref(struct batadv_softif_vlan *vlan)
{
+ if (!vlan)
+ return;
+
if (atomic_dec_and_test(&vlan->refcount)) {
spin_lock_bh(&vlan->bat_priv->softif_vlan_list_lock);
hlist_del_rcu(&vlan->list);
/* increase the refcounter of the related vlan */
vlan = batadv_softif_vlan_get(bat_priv, vid);
+ if (WARN(!vlan, "adding TT local entry %pM to non-existent VLAN %d",
+ addr, BATADV_PRINT_VID(vid)))
+ goto out;
batadv_dbg(BATADV_DBG_TT, bat_priv,
"Creating new local tt entry: %pM (vid: %d, ttvn: %d)\n",
struct batadv_tt_local_entry *tt_local_entry;
uint16_t flags, curr_flags = BATADV_NO_FLAGS;
struct batadv_softif_vlan *vlan;
+ void *tt_entry_exists;
tt_local_entry = batadv_tt_local_hash_find(bat_priv, addr, vid);
if (!tt_local_entry)
* immediately purge it
*/
batadv_tt_local_event(bat_priv, tt_local_entry, BATADV_TT_CLIENT_DEL);
- hlist_del_rcu(&tt_local_entry->common.hash_entry);
+
+ tt_entry_exists = batadv_hash_remove(bat_priv->tt.local_hash,
+ batadv_compare_tt,
+ batadv_choose_tt,
+ &tt_local_entry->common);
+ if (!tt_entry_exists)
+ goto out;
+
+ /* extra call to free the local tt entry */
batadv_tt_local_entry_free_ref(tt_local_entry);
/* decrease the reference held for this vlan */
vlan = batadv_softif_vlan_get(bat_priv, vid);
+ if (!vlan)
+ goto out;
+
batadv_softif_vlan_free_ref(vlan);
batadv_softif_vlan_free_ref(vlan);
/* decrease the reference held for this vlan */
vlan = batadv_softif_vlan_get(bat_priv,
tt_common_entry->vid);
- batadv_softif_vlan_free_ref(vlan);
- batadv_softif_vlan_free_ref(vlan);
+ if (vlan) {
+ batadv_softif_vlan_free_ref(vlan);
+ batadv_softif_vlan_free_ref(vlan);
+ }
batadv_tt_local_entry_free_ref(tt_local);
}
/* decrease the reference held for this vlan */
vlan = batadv_softif_vlan_get(bat_priv, tt_common->vid);
- batadv_softif_vlan_free_ref(vlan);
- batadv_softif_vlan_free_ref(vlan);
+ if (vlan) {
+ batadv_softif_vlan_free_ref(vlan);
+ batadv_softif_vlan_free_ref(vlan);
+ }
batadv_tt_local_entry_free_ref(tt_local);
}
/* Make sure we copy only the significant bytes based on the
* encryption key size, and set the rest of the value to zeroes.
*/
- memcpy(ev.key.val, key->val, sizeof(key->enc_size));
+ memcpy(ev.key.val, key->val, key->enc_size);
memset(ev.key.val + key->enc_size, 0,
sizeof(ev.key.val) - key->enc_size);
+ nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
+ nla_total_size(1) /* IFLA_BRPORT_LEARNING */
+ nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
+ + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
+ + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
+ 0;
}
[IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
[IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
[IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
+ [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
+ [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
};
/* Change the state of the port and notify spanning tree */
goto out;
}
-static int skb_set_peeked(struct sk_buff *skb)
+static struct sk_buff *skb_set_peeked(struct sk_buff *skb)
{
struct sk_buff *nskb;
if (skb->peeked)
- return 0;
+ return skb;
/* We have to unshare an skb before modifying it. */
if (!skb_shared(skb))
nskb = skb_clone(skb, GFP_ATOMIC);
if (!nskb)
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
skb->prev->next = nskb;
skb->next->prev = nskb;
done:
skb->peeked = 1;
- return 0;
+ return skb;
}
/**
continue;
}
- error = skb_set_peeked(skb);
- if (error)
+ skb = skb_set_peeked(skb);
+ error = PTR_ERR(skb);
+ if (IS_ERR(skb))
goto unlock_err;
atomic_inc(&skb->users);
set_freezable();
- __set_current_state(TASK_RUNNING);
-
while (!kthread_should_stop()) {
pkt_dev = next_to_run(t);
try_to_freeze();
}
- set_current_state(TASK_INTERRUPTIBLE);
pr_debug("%s stopping all device\n", t->tsk->comm);
pktgen_stop(t);
spin_lock_bh(&queue->syn_wait_lock);
while ((req = lopt->syn_table[i]) != NULL) {
lopt->syn_table[i] = req->dl_next;
+ /* Because of following del_timer_sync(),
+ * we must release the spinlock here
+ * or risk a dead lock.
+ */
+ spin_unlock_bh(&queue->syn_wait_lock);
atomic_inc(&lopt->qlen_dec);
- if (del_timer(&req->rsk_timer))
+ if (del_timer_sync(&req->rsk_timer))
reqsk_put(req);
reqsk_put(req);
+ spin_lock_bh(&queue->syn_wait_lock);
}
spin_unlock_bh(&queue->syn_wait_lock);
}
return -ENODEV;
/* Use already configured phy mode */
- p->phy_interface = p->phy->interface;
+ if (p->phy_interface == PHY_INTERFACE_MODE_NA)
+ p->phy_interface = p->phy->interface;
phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
p->phy_interface);
}
spin_unlock(&queue->syn_wait_lock);
- if (del_timer(&req->rsk_timer))
+ if (del_timer_sync(&req->rsk_timer))
reqsk_put(req);
return found;
}
synproxy_build_options(nth, opts);
- synproxy_send_tcp(skb, nskb, NULL, 0, niph, nth, tcp_hdr_size);
+ synproxy_send_tcp(skb, nskb, skb->nfct, IP_CT_ESTABLISHED_REPLY,
+ niph, nth, tcp_hdr_size);
}
static bool
req = inet_csk_search_req(sk, th->source, iph->saddr, iph->daddr);
if (req) {
nsk = tcp_check_req(sk, skb, req, false);
- if (!nsk)
+ if (!nsk || nsk == sk)
reqsk_put(req);
return nsk;
}
skb->sk = sk;
skb->destructor = sock_efree;
- dst = sk->sk_rx_dst;
+ dst = READ_ONCE(sk->sk_rx_dst);
if (dst)
dst = dst_check(dst, 0);
- if (dst)
- skb_dst_set_noref(skb, dst);
+ if (dst) {
+ /* DST_NOCACHE can not be used without taking a reference */
+ if (dst->flags & DST_NOCACHE) {
+ if (likely(atomic_inc_not_zero(&dst->__refcnt)))
+ skb_dst_set(skb, dst);
+ } else {
+ skb_dst_set_noref(skb, dst);
+ }
+ }
}
int udp_rcv(struct sk_buff *skb)
}
static void
-synproxy_send_tcp(const struct sk_buff *skb, struct sk_buff *nskb,
+synproxy_send_tcp(const struct synproxy_net *snet,
+ const struct sk_buff *skb, struct sk_buff *nskb,
struct nf_conntrack *nfct, enum ip_conntrack_info ctinfo,
struct ipv6hdr *niph, struct tcphdr *nth,
unsigned int tcp_hdr_size)
{
- struct net *net = nf_ct_net((struct nf_conn *)nfct);
+ struct net *net = nf_ct_net(snet->tmpl);
struct dst_entry *dst;
struct flowi6 fl6;
}
static void
-synproxy_send_client_synack(const struct sk_buff *skb, const struct tcphdr *th,
+synproxy_send_client_synack(const struct synproxy_net *snet,
+ const struct sk_buff *skb, const struct tcphdr *th,
const struct synproxy_options *opts)
{
struct sk_buff *nskb;
synproxy_build_options(nth, opts);
- synproxy_send_tcp(skb, nskb, skb->nfct, IP_CT_ESTABLISHED_REPLY,
+ synproxy_send_tcp(snet, skb, nskb, skb->nfct, IP_CT_ESTABLISHED_REPLY,
niph, nth, tcp_hdr_size);
}
synproxy_build_options(nth, opts);
- synproxy_send_tcp(skb, nskb, &snet->tmpl->ct_general, IP_CT_NEW,
+ synproxy_send_tcp(snet, skb, nskb, &snet->tmpl->ct_general, IP_CT_NEW,
niph, nth, tcp_hdr_size);
}
synproxy_build_options(nth, opts);
- synproxy_send_tcp(skb, nskb, NULL, 0, niph, nth, tcp_hdr_size);
+ synproxy_send_tcp(snet, skb, nskb, NULL, 0, niph, nth, tcp_hdr_size);
}
static void
synproxy_build_options(nth, opts);
- synproxy_send_tcp(skb, nskb, NULL, 0, niph, nth, tcp_hdr_size);
+ synproxy_send_tcp(snet, skb, nskb, skb->nfct, IP_CT_ESTABLISHED_REPLY,
+ niph, nth, tcp_hdr_size);
}
static bool
XT_SYNPROXY_OPT_SACK_PERM |
XT_SYNPROXY_OPT_ECN);
- synproxy_send_client_synack(skb, th, &opts);
+ synproxy_send_client_synack(snet, skb, th, &opts);
return NF_DROP;
} else if (th->ack && !(th->fin || th->rst || th->syn)) {
int gwa_type;
gw_addr = &cfg->fc_gateway;
+ gwa_type = ipv6_addr_type(gw_addr);
/* if gw_addr is local we will fail to detect this in case
* address is still TENTATIVE (DAD in progress). rt6_lookup()
* prefix route was assigned to, which might be non-loopback.
*/
err = -EINVAL;
- if (ipv6_chk_addr_and_flags(net, gw_addr, NULL, 0, 0))
+ if (ipv6_chk_addr_and_flags(net, gw_addr,
+ gwa_type & IPV6_ADDR_LINKLOCAL ?
+ dev : NULL, 0, 0))
goto out;
rt->rt6i_gateway = *gw_addr;
- gwa_type = ipv6_addr_type(gw_addr);
if (gwa_type != (IPV6_ADDR_LINKLOCAL|IPV6_ADDR_UNICAST)) {
struct rt6_info *grt;
&ipv6_hdr(skb)->daddr, tcp_v6_iif(skb));
if (req) {
nsk = tcp_check_req(sk, skb, req, false);
- if (!nsk)
+ if (!nsk || nsk == sk)
reqsk_put(req);
return nsk;
}
{
struct nf_conn *tmpl;
- tmpl = kzalloc(sizeof(struct nf_conn), GFP_KERNEL);
+ tmpl = kzalloc(sizeof(*tmpl), flags);
if (tmpl == NULL)
return NULL;
if (zone) {
struct nf_conntrack_zone *nf_ct_zone;
- nf_ct_zone = nf_ct_ext_add(tmpl, NF_CT_EXT_ZONE, GFP_ATOMIC);
+ nf_ct_zone = nf_ct_ext_add(tmpl, NF_CT_EXT_ZONE, flags);
if (!nf_ct_zone)
goto out_free;
nf_ct_zone->id = zone;
sz = nr_slots * sizeof(struct hlist_nulls_head);
hash = (void *)__get_free_pages(GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO,
get_order(sz));
- if (!hash) {
- printk(KERN_WARNING "nf_conntrack: falling back to vmalloc.\n");
+ if (!hash)
hash = vzalloc(sz);
- }
if (hash && nulls)
for (i = 0; i < nr_slots; i++)
int err = -ENOMEM;
ct = nf_ct_tmpl_alloc(net, 0, GFP_KERNEL);
- if (IS_ERR(ct)) {
- err = PTR_ERR(ct);
+ if (!ct)
goto err1;
- }
if (!nfct_seqadj_ext_add(ct))
goto err2;
goto err1;
ct = nf_ct_tmpl_alloc(par->net, info->zone, GFP_KERNEL);
- ret = PTR_ERR(ct);
- if (IS_ERR(ct))
+ if (!ct) {
+ ret = -ENOMEM;
goto err2;
+ }
ret = 0;
if ((info->ct_events || info->exp_events) &&
err = __netlink_insert(table, sk);
if (err) {
+ /* In case the hashtable backend returns with -EBUSY
+ * from here, it must not escape to the caller.
+ */
+ if (unlikely(err == -EBUSY))
+ err = -EOVERFLOW;
if (err == -EEXIST)
err = -EADDRINUSE;
nlk_sk(sk)->portid = 0;
return 0;
}
-static void set_ip_addr(struct sk_buff *skb, struct iphdr *nh,
- __be32 *addr, __be32 new_addr)
+static void update_ip_l4_checksum(struct sk_buff *skb, struct iphdr *nh,
+ __be32 addr, __be32 new_addr)
{
int transport_len = skb->len - skb_transport_offset(skb);
+ if (nh->frag_off & htons(IP_OFFSET))
+ return;
+
if (nh->protocol == IPPROTO_TCP) {
if (likely(transport_len >= sizeof(struct tcphdr)))
inet_proto_csum_replace4(&tcp_hdr(skb)->check, skb,
- *addr, new_addr, 1);
+ addr, new_addr, 1);
} else if (nh->protocol == IPPROTO_UDP) {
if (likely(transport_len >= sizeof(struct udphdr))) {
struct udphdr *uh = udp_hdr(skb);
if (uh->check || skb->ip_summed == CHECKSUM_PARTIAL) {
inet_proto_csum_replace4(&uh->check, skb,
- *addr, new_addr, 1);
+ addr, new_addr, 1);
if (!uh->check)
uh->check = CSUM_MANGLED_0;
}
}
}
+}
+static void set_ip_addr(struct sk_buff *skb, struct iphdr *nh,
+ __be32 *addr, __be32 new_addr)
+{
+ update_ip_l4_checksum(skb, nh, *addr, new_addr);
csum_replace4(&nh->check, *addr, new_addr);
skb_clear_hash(skb);
*addr = new_addr;
/* check for all kinds of wrapping and the like */
start = (unsigned long)optval;
- if (len < 0 || len + PAGE_SIZE - 1 < len || start + len < start) {
+ if (len < 0 || len > INT_MAX - PAGE_SIZE + 1 || start + len < start) {
ret = -EINVAL;
goto out;
}
return ret;
ret = ACT_P_CREATED;
} else {
+ if (bind)
+ return 0;
if (!ovr) {
tcf_hash_release(a, bind);
return -EEXIST;
static void fq_codel_reset(struct Qdisc *sch)
{
- struct sk_buff *skb;
+ struct fq_codel_sched_data *q = qdisc_priv(sch);
+ int i;
- while ((skb = fq_codel_dequeue(sch)) != NULL)
- kfree_skb(skb);
+ INIT_LIST_HEAD(&q->new_flows);
+ INIT_LIST_HEAD(&q->old_flows);
+ for (i = 0; i < q->flows_cnt; i++) {
+ struct fq_codel_flow *flow = q->flows + i;
+
+ while (flow->head) {
+ struct sk_buff *skb = dequeue_head(flow);
+
+ qdisc_qstats_backlog_dec(sch, skb);
+ kfree_skb(skb);
+ }
+
+ INIT_LIST_HEAD(&flow->flowchain);
+ codel_vars_init(&flow->cvars);
+ }
+ memset(q->backlogs, 0, q->flows_cnt * sizeof(u32));
+ sch->q.qlen = 0;
}
static const struct nla_policy fq_codel_policy[TCA_FQ_CODEL_MAX + 1] = {
my $kconfig = $ARGV[1];
my $lsmod_file = $ENV{'LSMOD'};
-my @makefiles = `find $ksource -name Makefile 2>/dev/null`;
+my @makefiles = `find $ksource -name Makefile -or -name Kbuild 2>/dev/null`;
chomp @makefiles;
my %depends;
prefix ?= $(HOME)
endif
bindir_relative = bin
-bindir = $(prefix)/$(bindir_relative)
+bindir = $(abspath $(prefix)/$(bindir_relative))
mandir = share/man
infodir = share/info
perfexecdir = libexec/perf-core
else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
update_stats(&runtime_cycles_stats[ctx][cpu], count[0]);
else if (perf_stat_evsel__is(counter, CYCLES_IN_TX))
- update_stats(&runtime_transaction_stats[ctx][cpu], count[0]);
+ update_stats(&runtime_cycles_in_tx_stats[ctx][cpu], count[0]);
else if (perf_stat_evsel__is(counter, TRANSACTION_START))
update_stats(&runtime_transaction_stats[ctx][cpu], count[0]);
else if (perf_stat_evsel__is(counter, ELISION_START))
" # %5.2f%% aborted cycles ",
100.0 * ((total2-avg) / total));
} else if (perf_stat_evsel__is(evsel, TRANSACTION_START) &&
- avg > 0 &&
runtime_cycles_in_tx_stats[ctx][cpu].n != 0) {
total = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
- if (total)
+ if (avg)
ratio = total / avg;
fprintf(out, " # %8.0f cycles / transaction ", ratio);
} else if (perf_stat_evsel__is(evsel, ELISION_START) &&
- avg > 0 &&
runtime_cycles_in_tx_stats[ctx][cpu].n != 0) {
total = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]);
- if (total)
+ if (avg)
ratio = total / avg;
fprintf(out, " # %8.0f cycles / elision ", ratio);
projects / people / ms / linux.git / commitdiff
