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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-06-22 16:35:24 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-25 21:39:06 +0200
commit194002b274e9169a04beb1b23dcc132159bb566c (patch)
tree6977e48df4a1429dae999d4afe23e5e28febc99e /arch/powerpc
parent7f8b4e4e0988dadfd22330fd147ad2453e19f510 (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/powerpc')
-rw-r--r--arch/powerpc/include/asm/perf_counter.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/perf_counter.h b/arch/powerpc/include/asm/perf_counter.h
index 8ccd4e15576..0ea0639fcf7 100644
--- a/arch/powerpc/include/asm/perf_counter.h
+++ b/arch/powerpc/include/asm/perf_counter.h
@@ -61,6 +61,8 @@ struct pt_regs;
extern unsigned long perf_misc_flags(struct pt_regs *regs);
extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
+#define PERF_COUNTER_INDEX_OFFSET 1
+
/*
* Only override the default definitions in include/linux/perf_counter.h
* if we have hardware PMU support.