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| author | David S. Miller <davem@davemloft.net> | 2009-09-11 20:35:13 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-11 20:35:13 -0700 |
| commit | cabc5c0f7fa1342049042d6e147db5a73773955b (patch) | |
| tree | 2be09ae1777d580c7dfe05d6d5b76e57281ec447 /arch/x86/include/asm/perf_counter.h | |
| parent | b73d884756303316ead4cd7dad51236b2a515a1a (diff) | |
| parent | 86d710146fb9975f04c505ec78caa43d227c1018 (diff) | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
arch/sparc/Kconfig
Diffstat (limited to 'arch/x86/include/asm/perf_counter.h')
| -rw-r--r-- | arch/x86/include/asm/perf_counter.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/include/asm/perf_counter.h b/arch/x86/include/asm/perf_counter.h index fa64e401589d..e7b7c938ae27 100644 --- a/arch/x86/include/asm/perf_counter.h +++ b/arch/x86/include/asm/perf_counter.h @@ -84,6 +84,16 @@ union cpuid10_edx { #define MSR_ARCH_PERFMON_FIXED_CTR2 0x30b #define X86_PMC_IDX_FIXED_BUS_CYCLES (X86_PMC_IDX_FIXED + 2) +/* + * We model BTS tracing as another fixed-mode PMC. + * + * We choose a value in the middle of the fixed counter range, since lower + * values are used by actual fixed counters and higher values are used + * to indicate other overflow conditions in the PERF_GLOBAL_STATUS msr. + */ +#define X86_PMC_IDX_FIXED_BTS (X86_PMC_IDX_FIXED + 16) + + #ifdef CONFIG_PERF_COUNTERS extern void init_hw_perf_counters(void); extern void perf_counters_lapic_init(void); |