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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/powerpc/mm/fault.c
parent7dd1fcc258b65da718f01e4684a7b9244501a9fb (diff)
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/powerpc/mm/fault.c')
-rw-r--r--arch/powerpc/mm/fault.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index eda5b0ca4af..17bbf6f91fb 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -312,6 +312,7 @@ good_area:
}
if (ret & VM_FAULT_MAJOR) {
current->maj_flt++;
+ perf_swcounter_event(PERF_COUNT_PAGE_FAULTS_MAJ, 1, 0, regs);
#ifdef CONFIG_PPC_SMLPAR
if (firmware_has_feature(FW_FEATURE_CMO)) {
preempt_disable();
@@ -319,8 +320,10 @@ good_area:
preempt_enable();
}
#endif
- } else
+ } else {
current->min_flt++;
+ perf_swcounter_event(PERF_COUNT_PAGE_FAULTS_MIN, 1, 0, regs);
+ }
up_read(&mm->mmap_sem);
return 0;