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perf_counter: provide major/minor page fault software events

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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>
This commit is contained in:
Peter Zijlstra
2009-03-13 12:21:34 +01:00
committed by Ingo Molnar
parent 7dd1fcc258
commit ac17dc8e58
4 changed files with 21 additions and 17 deletions
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5
arch/powerpc/mm/fault.c
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@@ -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;