1 From: jbeulich@novell.com
2 Subject: make /proc/cpuinfo track CPU speed
3 Patch-mainline: obsolete
5 --- sle11-2009-07-31.orig/arch/x86/kernel/acpi/processor_extcntl_xen.c 2009-07-31 14:52:14.000000000 +0200
6 +++ sle11-2009-07-31/arch/x86/kernel/acpi/processor_extcntl_xen.c 2009-07-31 15:14:03.000000000 +0200
7 @@ -204,3 +204,14 @@ void arch_acpi_processor_init_extcntl(co
8 *ops = &xen_extcntl_ops;
10 EXPORT_SYMBOL(arch_acpi_processor_init_extcntl);
12 +unsigned int cpufreq_quick_get(unsigned int cpu)
14 + xen_platform_op_t op = {
15 + .cmd = XENPF_get_cpu_freq,
16 + .interface_version = XENPF_INTERFACE_VERSION,
17 + .u.get_cpu_freq.vcpu = cpu
20 + return HYPERVISOR_platform_op(&op) == 0 ? op.u.get_cpu_freq.freq : 0;
22 --- sle11-2009-07-31.orig/include/linux/cpufreq.h 2009-07-31 14:49:20.000000000 +0200
23 +++ sle11-2009-07-31/include/linux/cpufreq.h 2008-10-01 16:44:34.000000000 +0200
24 @@ -282,7 +282,7 @@ int cpufreq_update_policy(unsigned int c
25 unsigned int cpufreq_get(unsigned int cpu);
27 /* query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it */
28 -#ifdef CONFIG_CPU_FREQ
29 +#if defined(CONFIG_CPU_FREQ) || defined(CONFIG_PROCESSOR_EXTERNAL_CONTROL)
30 unsigned int cpufreq_quick_get(unsigned int cpu);
32 static inline unsigned int cpufreq_quick_get(unsigned int cpu)
33 --- sle11-2009-07-31.orig/include/xen/interface/platform.h 2009-07-31 14:49:20.000000000 +0200
34 +++ sle11-2009-07-31/include/xen/interface/platform.h 2008-10-01 16:44:34.000000000 +0200
35 @@ -312,6 +312,16 @@ struct xenpf_set_processor_pminfo {
36 typedef struct xenpf_set_processor_pminfo xenpf_set_processor_pminfo_t;
37 DEFINE_XEN_GUEST_HANDLE(xenpf_set_processor_pminfo_t);
39 +#define XENPF_get_cpu_freq ('N' << 24)
40 +struct xenpf_get_cpu_freq {
44 + uint32_t freq; /* in kHz */
46 +typedef struct xenpf_get_cpu_freq xenpf_get_cpu_freq_t;
47 +DEFINE_XEN_GUEST_HANDLE(xenpf_get_cpu_freq_t);
49 struct xen_platform_op {
51 uint32_t interface_version; /* XENPF_INTERFACE_VERSION */
52 @@ -327,6 +337,7 @@ struct xen_platform_op {
53 struct xenpf_change_freq change_freq;
54 struct xenpf_getidletime getidletime;
55 struct xenpf_set_processor_pminfo set_pminfo;
56 + struct xenpf_get_cpu_freq get_cpu_freq;