diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-06-22 16:35:24 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-25 21:39:06 +0200 |
| commit | 194002b274e9169a04beb1b23dcc132159bb566c (patch) | |
| tree | 6977e48df4a1429dae999d4afe23e5e28febc99e /arch/x86/include | |
| parent | 7f8b4e4e0988dadfd22330fd147ad2453e19f510 (diff) | |
perf_counter, x86: Add mmap counter read support
Update the mmap control page with the needed information to
use the userspace RDPMC instruction for self monitoring.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/perf_counter.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/perf_counter.h b/arch/x86/include/asm/perf_counter.h index 5fb33e160ea..fa64e401589 100644 --- a/arch/x86/include/asm/perf_counter.h +++ b/arch/x86/include/asm/perf_counter.h @@ -87,6 +87,9 @@ union cpuid10_edx { #ifdef CONFIG_PERF_COUNTERS extern void init_hw_perf_counters(void); extern void perf_counters_lapic_init(void); + +#define PERF_COUNTER_INDEX_OFFSET 0 + #else static inline void init_hw_perf_counters(void) { } static inline void perf_counters_lapic_init(void) { } |