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| author | Ingo Molnar <mingo@elte.hu> | 2008-12-17 10:51:15 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-23 12:45:11 +0100 |
| commit | 703e937c83bbad79075a7846e062e447c2fee6a4 (patch) | |
| tree | 7c3e23179f14c32368213024be20dcf27bb6e7a8 /arch/x86/include/asm/perf_counter.h | |
| parent | eb2b861810d4ff72454c83996b891df4e0aaff9a (diff) | |
| download | lwn-703e937c83bbad79075a7846e062e447c2fee6a4.tar.gz lwn-703e937c83bbad79075a7846e062e447c2fee6a4.zip | |
perfcounters: add fixed-mode PMC enumeration
Enumerate fixed-mode PMCs based on CPUID, and feed that into the
perfcounter code.
Does not use fixed-mode PMCs yet.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include/asm/perf_counter.h')
| -rw-r--r-- | arch/x86/include/asm/perf_counter.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/x86/include/asm/perf_counter.h b/arch/x86/include/asm/perf_counter.h index dd5a4a559e2d..945a315e6d62 100644 --- a/arch/x86/include/asm/perf_counter.h +++ b/arch/x86/include/asm/perf_counter.h @@ -41,6 +41,29 @@ union cpuid10_eax { unsigned int full; }; +union cpuid10_edx { + struct { + unsigned int num_counters_fixed:4; + unsigned int reserved:28; + } split; + unsigned int full; +}; + + +/* + * Fixed-purpose performance counters: + */ + +/* Instr_Retired.Any: */ +#define MSR_ARCH_PERFMON_FIXED_CTR0 0x309 + +/* CPU_CLK_Unhalted.Core: */ +#define MSR_ARCH_PERFMON_FIXED_CTR1 0x30a + +/* CPU_CLK_Unhalted.Ref: */ +#define MSR_ARCH_PERFMON_FIXED_CTR2 0x30b + + #ifdef CONFIG_PERF_COUNTERS extern void init_hw_perf_counters(void); extern void perf_counters_lapic_init(int nmi); |