config SMT_NUM_THREADS_DYNAMIC
bool
+config ARCH_SUPPORTS_SCHED_SMT
+ bool
+
+config ARCH_SUPPORTS_SCHED_CLUSTER
+ bool
+
+config ARCH_SUPPORTS_SCHED_MC
+ bool
+
+config SCHED_SMT
+ bool "SMT (Hyperthreading) scheduler support"
+ depends on ARCH_SUPPORTS_SCHED_SMT
+ default y
+ help
+ Improves the CPU scheduler's decision making when dealing with
+ MultiThreading at a cost of slightly increased overhead in some
+ places. If unsure say N here.
+
+config SCHED_CLUSTER
+ bool "Cluster scheduler support"
+ depends on ARCH_SUPPORTS_SCHED_CLUSTER
+ default y
+ help
+ Cluster scheduler support improves the CPU scheduler's decision
+ making when dealing with machines that have clusters of CPUs.
+ Cluster usually means a couple of CPUs which are placed closely
+ by sharing mid-level caches, last-level cache tags or internal
+ busses.
+
+config SCHED_MC
+ bool "Multi-Core Cache (MC) scheduler support"
+ depends on ARCH_SUPPORTS_SCHED_MC
+ default y
+ help
+ Multi-core scheduler support improves the CPU scheduler's decision
+ making when dealing with multi-core CPU chips at a cost of slightly
+ increased overhead in some places. If unsure say N here.
+
# Selected by HOTPLUG_CORE_SYNC_DEAD or HOTPLUG_CORE_SYNC_FULL
config HOTPLUG_CORE_SYNC
bool
config ARM_CPU_TOPOLOGY
bool "Support cpu topology definition"
depends on SMP && CPU_V7
+ select ARCH_SUPPORTS_SCHED_MC
+ select ARCH_SUPPORTS_SCHED_SMT
default y
help
Support ARM cpu topology definition. The MPIDR register defines
affinity between processors which is then used to describe the cpu
topology of an ARM System.
-config SCHED_MC
- bool "Multi-core scheduler support"
- depends on ARM_CPU_TOPOLOGY
- help
- Multi-core scheduler support improves the CPU scheduler's decision
- making when dealing with multi-core CPU chips at a cost of slightly
- increased overhead in some places. If unsure say N here.
-
-config SCHED_SMT
- bool "SMT scheduler support"
- depends on ARM_CPU_TOPOLOGY
- help
- Improves the CPU scheduler's decision making when dealing with
- MultiThreading at a cost of slightly increased overhead in some
- places. If unsure say N here.
-
config HAVE_ARM_SCU
bool
help
select ARCH_SUPPORTS_PER_VMA_LOCK
select ARCH_SUPPORTS_HUGE_PFNMAP if TRANSPARENT_HUGEPAGE
select ARCH_SUPPORTS_RT
+ select ARCH_SUPPORTS_SCHED_SMT
+ select ARCH_SUPPORTS_SCHED_CLUSTER
+ select ARCH_SUPPORTS_SCHED_MC
select ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH
select ARCH_WANT_COMPAT_IPC_PARSE_VERSION if COMPAT
select ARCH_WANT_DEFAULT_BPF_JIT
endchoice
-config SCHED_MC
- bool "Multi-core scheduler support"
- help
- Multi-core scheduler support improves the CPU scheduler's decision
- making when dealing with multi-core CPU chips at a cost of slightly
- increased overhead in some places. If unsure say N here.
-
-config SCHED_CLUSTER
- bool "Cluster scheduler support"
- help
- Cluster scheduler support improves the CPU scheduler's decision
- making when dealing with machines that have clusters of CPUs.
- Cluster usually means a couple of CPUs which are placed closely
- by sharing mid-level caches, last-level cache tags or internal
- busses.
-
-config SCHED_SMT
- bool "SMT scheduler support"
- help
- Improves the CPU scheduler's decision making when dealing with
- MultiThreading at a cost of slightly increased overhead in some
- places. If unsure say N here.
-
config NR_CPUS
int "Maximum number of CPUs (2-4096)"
range 2 4096
select ARCH_SUPPORTS_MSEAL_SYSTEM_MAPPINGS
select ARCH_SUPPORTS_NUMA_BALANCING
select ARCH_SUPPORTS_RT
+ select ARCH_SUPPORTS_SCHED_SMT if SMP
+ select ARCH_SUPPORTS_SCHED_MC if SMP
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_CMPXCHG_LOCKREF
select ARCH_USE_MEMTEST
This kernel feature allows the kernel to be loaded directly by
EFI firmware without the use of a bootloader.
-config SCHED_SMT
- bool "SMT scheduler support"
- depends on SMP
- default y
- help
- Improves scheduler's performance when there are multiple
- threads in one physical core.
-
-config SCHED_MC
- bool "Multi-core scheduler support"
- depends on SMP
- default y
- help
- Multi-core scheduler support improves the CPU scheduler's decision
- making when dealing with multi-core CPU chips at a cost of slightly
- increased overhead in some places.
-
config SMP
bool "Multi-Processing support"
help
select SMP
select SMP_UP
select SYS_SUPPORTS_SMP
- select SYS_SUPPORTS_SCHED_SMT
+ select ARCH_SUPPORTS_SCHED_SMT
select MIPS_PERF_SHARED_TC_COUNTERS
help
This is a kernel model which is known as SMVP. This is supported
config MIPS_MT
bool
-config SCHED_SMT
- bool "SMT (multithreading) scheduler support"
- depends on SYS_SUPPORTS_SCHED_SMT
- default n
- help
- SMT scheduler support improves the CPU scheduler's decision making
- when dealing with MIPS MT enabled cores at a cost of slightly
- increased overhead in some places. If unsure say N here.
-
-config SYS_SUPPORTS_SCHED_SMT
- bool
-
config SYS_SUPPORTS_MULTITHREADING
bool
select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU
select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
select SYS_SUPPORTS_HOTPLUG_CPU
- select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
+ select ARCH_SUPPORTS_SCHED_SMT if CPU_MIPSR6
select SYS_SUPPORTS_SMP
select WEAK_ORDERING
select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_SMP_IDLE_THREAD
select GENERIC_ARCH_TOPOLOGY if SMP
+ select ARCH_SUPPORTS_SCHED_MC if SMP && PA8X00
select GENERIC_CPU_DEVICES if !SMP
select GENERIC_LIB_DEVMEM_IS_ALLOWED
select SYSCTL_ARCH_UNALIGN_ALLOW
If you don't know what to do here, say N.
-config SCHED_MC
- bool "Multi-core scheduler support"
- depends on GENERIC_ARCH_TOPOLOGY && PA8X00
- help
- Multi-core scheduler support improves the CPU scheduler's decision
- making when dealing with multi-core CPU chips at a cost of slightly
- increased overhead in some places. If unsure say N here.
-
config IRQSTACKS
bool "Use separate kernel stacks when processing interrupts"
default y
select ARCH_STACKWALK
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_DEBUG_PAGEALLOC if PPC_BOOK3S || PPC_8xx
+ select ARCH_SUPPORTS_SCHED_MC if SMP
+ select ARCH_SUPPORTS_SCHED_SMT if PPC64 && SMP
+ select SCHED_MC if ARCH_SUPPORTS_SCHED_MC
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_CMPXCHG_LOCKREF if PPC64
select ARCH_USE_MEMTEST
config PPC_COPRO_BASE
bool
-config SCHED_SMT
- bool "SMT (Hyperthreading) scheduler support"
- depends on PPC64 && SMP
- help
- SMT scheduler support improves the CPU scheduler's decision making
- when dealing with POWER5 cpus at a cost of slightly increased
- overhead in some places. If unsure say N here.
-
-config SCHED_MC
- def_bool y
- depends on SMP
-
config PPC_DENORMALISATION
bool "PowerPC denormalisation exception handling"
depends on PPC_BOOK3S_64
select ARCH_SUPPORTS_PER_VMA_LOCK if MMU
select ARCH_SUPPORTS_RT
select ARCH_SUPPORTS_SHADOW_CALL_STACK if HAVE_SHADOW_CALL_STACK
+ select ARCH_SUPPORTS_SCHED_MC if SMP
select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
select ARCH_USE_MEMTEST
select ARCH_USE_QUEUED_RWLOCKS
If you don't know what to do here, say N.
-config SCHED_MC
- bool "Multi-core scheduler support"
- depends on SMP
- help
- Multi-core scheduler support improves the CPU scheduler's decision
- making when dealing with multi-core CPU chips at a cost of slightly
- increased overhead in some places. If unsure say N here.
-
config NR_CPUS
int "Maximum number of CPUs (2-512)"
depends on SMP
depends on NUMA
default "1"
-config SCHED_SMT
- def_bool n
-
-config SCHED_MC
- def_bool n
-
config SCHED_TOPOLOGY
def_bool y
prompt "Topology scheduler support"
+ select ARCH_SUPPORTS_SCHED_SMT
+ select ARCH_SUPPORTS_SCHED_MC
select SCHED_SMT
select SCHED_MC
help
select HAVE_SETUP_PER_CPU_AREA
select NEED_PER_CPU_EMBED_FIRST_CHUNK
select NEED_PER_CPU_PAGE_FIRST_CHUNK
+ select ARCH_SUPPORTS_SCHED_SMT if SMP
+ select ARCH_SUPPORTS_SCHED_MC if SMP
config ARCH_PROC_KCORE_TEXT
def_bool y
source "kernel/power/Kconfig"
endif
-config SCHED_SMT
- bool "SMT (Hyperthreading) scheduler support"
- depends on SPARC64 && SMP
- default y
- help
- SMT scheduler support improves the CPU scheduler's decision making
- when dealing with SPARC cpus at a cost of slightly increased overhead
- in some places. If unsure say N here.
-
-config SCHED_MC
- bool "Multi-core scheduler support"
- depends on SPARC64 && SMP
- default y
- help
- Multi-core scheduler support improves the CPU scheduler's decision
- making when dealing with multi-core CPU chips at a cost of slightly
- increased overhead in some places. If unsure say N here.
-
config CMDLINE_BOOL
bool "Default bootloader kernel arguments"
depends on SPARC64
imply IMA_SECURE_AND_OR_TRUSTED_BOOT if EFI
select HAVE_DYNAMIC_FTRACE_NO_PATCHABLE
select ARCH_SUPPORTS_PT_RECLAIM if X86_64
+ select ARCH_SUPPORTS_SCHED_SMT if SMP
+ select SCHED_SMT if SMP
+ select ARCH_SUPPORTS_SCHED_CLUSTER if SMP
+ select ARCH_SUPPORTS_SCHED_MC if SMP
config INSTRUCTION_DECODER
def_bool y
This is purely to save memory: each supported CPU adds about 8KB
to the kernel image.
-config SCHED_CLUSTER
- bool "Cluster scheduler support"
- depends on SMP
- default y
- help
- Cluster scheduler support improves the CPU scheduler's decision
- making when dealing with machines that have clusters of CPUs.
- Cluster usually means a couple of CPUs which are placed closely
- by sharing mid-level caches, last-level cache tags or internal
- busses.
-
-config SCHED_SMT
- def_bool y if SMP
-
-config SCHED_MC
- def_bool y
- prompt "Multi-core scheduler support"
- depends on SMP
- help
- Multi-core scheduler support improves the CPU scheduler's decision
- making when dealing with multi-core CPU chips at a cost of slightly
- increased overhead in some places. If unsure say N here.
-
config SCHED_MC_PRIO
bool "CPU core priorities scheduler support"
depends on SCHED_MC
projects / thirdparty / kernel / stable.git / commitdiff
