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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-03-13 12:21:34 +0100
committerIngo Molnar <mingo@elte.hu>2009-04-06 09:29:40 +0200
commitac17dc8e58f3069ea895cfff963adf98ff3cf6b2 (patch)
treefe07b13dd100fd1f650d8437296f5c6908e9adea /arch/x86/mm
parent7dd1fcc258b65da718f01e4684a7b9244501a9fb (diff)
downloadop-kernel-dev-ac17dc8e58f3069ea895cfff963adf98ff3cf6b2.zip
op-kernel-dev-ac17dc8e58f3069ea895cfff963adf98ff3cf6b2.tar.gz
perf_counter: provide major/minor page fault software events
Provide separate sw counters for major and minor page faults. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm')
-rw-r--r--arch/x86/mm/fault.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index c872575..f2d3324 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -1140,10 +1140,13 @@ good_area:
return;
}
- if (fault & VM_FAULT_MAJOR)
+ if (fault & VM_FAULT_MAJOR) {
tsk->maj_flt++;
- else
+ perf_swcounter_event(PERF_COUNT_PAGE_FAULTS_MAJ, 1, 0, regs);
+ } else {
tsk->min_flt++;
+ perf_swcounter_event(PERF_COUNT_PAGE_FAULTS_MIN, 1, 0, regs);
+ }
check_v8086_mode(regs, address, tsk);
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