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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-19 13:47:57 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-19 13:47:57 +0100 |
| commit | 40d743b8c16a8cf6e30c1d941aa6147f9550ea75 (patch) | |
| tree | 9fcdf9a06b18a275253048d1ea7c9803cec38845 /arch/x86/include/asm/processor.h | |
| parent | 7da18afa423f167e7ef3c9728e584d8bf05bd55a (diff) | |
| parent | 83e686ea0291ee93b87dcdc00b96443b80de56c9 (diff) | |
Merge branch 'for-rmk' of git://linux-arm.org/linux-2.6
Diffstat (limited to 'arch/x86/include/asm/processor.h')
| -rw-r--r-- | arch/x86/include/asm/processor.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index e08ea043e08..c3429e8b242 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -27,6 +27,7 @@ struct mm_struct; #include <linux/cpumask.h> #include <linux/cache.h> #include <linux/threads.h> +#include <linux/math64.h> #include <linux/init.h> /* @@ -1020,4 +1021,35 @@ extern void start_thread(struct pt_regs *regs, unsigned long new_ip, extern int get_tsc_mode(unsigned long adr); extern int set_tsc_mode(unsigned int val); +extern int 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; +} + #endif /* _ASM_X86_PROCESSOR_H */ |