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| author | Stratos Karafotis <stratosk@semaphore.gr> | 2013-06-05 19:01:42 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-07-26 01:06:43 +0200 |
| commit | 61c63e5ed3b9c472899d7152e961f2ffaafcf5a0 (patch) | |
| tree | e84b694d4640fd0e1ba527ec63e41e3edfddeb04 /arch | |
| parent | dfa5bb622555d9da0df21b50f46ebdeef390041b (diff) | |
| download | linux-61c63e5ed3b9c472899d7152e961f2ffaafcf5a0.tar.gz linux-61c63e5ed3b9c472899d7152e961f2ffaafcf5a0.tar.bz2 linux-61c63e5ed3b9c472899d7152e961f2ffaafcf5a0.zip | |
cpufreq: Remove unused APERF/MPERF support
The target frequency calculation method in the ondemand governor has
changed and it is now independent of the measured average frequency.
Consequently, the APERF/MPERF support in cpufreq is not used any
more, so drop it.
[rjw: Changelog]
Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/processor.h | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 24cf5aefb704..4f4a3d98c170 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -942,35 +942,6 @@ extern int set_tsc_mode(unsigned int val); extern u16 amd_get_nb_id(int cpu); -struct aperfmperf { - u64 aperf, mperf; -}; - -static inline void get_aperfmperf(struct aperfmperf *am) -{ - WARN_ON_ONCE(!boot_cpu_has(X86_FEATURE_APERFMPERF)); - - rdmsrl(MSR_IA32_APERF, am->aperf); - rdmsrl(MSR_IA32_MPERF, am->mperf); -} - -#define APERFMPERF_SHIFT 10 - -static inline -unsigned long calc_aperfmperf_ratio(struct aperfmperf *old, - struct aperfmperf *new) -{ - u64 aperf = new->aperf - old->aperf; - u64 mperf = new->mperf - old->mperf; - unsigned long ratio = aperf; - - mperf >>= APERFMPERF_SHIFT; - if (mperf) - ratio = div64_u64(aperf, mperf); - - return ratio; -} - extern unsigned long arch_align_stack(unsigned long sp); extern void free_init_pages(char *what, unsigned long begin, unsigned long end); |