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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2009-09-11 10:29:06 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-09-11 10:29:56 +0200 |
| commit | bde69af2ab696eebfac9583ea1e8a46b571e317f (patch) | |
| tree | 1f1d6b75c91a6e6a989251af2f3ead5908d8647b /arch | |
| parent | 5c0b912e755caaad555eb6feefdb1124462d8f37 (diff) | |
| download | lwn-bde69af2ab696eebfac9583ea1e8a46b571e317f.tar.gz lwn-bde69af2ab696eebfac9583ea1e8a46b571e317f.zip | |
[S390] Wire up page fault events for software perf counters.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/mm/fault.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index e5e119fe03b2..1abbadd497e1 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -10,6 +10,7 @@ * Copyright (C) 1995 Linus Torvalds */ +#include <linux/perf_counter.h> #include <linux/signal.h> #include <linux/sched.h> #include <linux/kernel.h> @@ -305,7 +306,7 @@ do_exception(struct pt_regs *regs, unsigned long error_code, int write) * interrupts again and then search the VMAs */ local_irq_enable(); - + perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address); down_read(&mm->mmap_sem); si_code = SEGV_MAPERR; @@ -363,11 +364,15 @@ good_area: } BUG(); } - if (fault & VM_FAULT_MAJOR) + if (fault & VM_FAULT_MAJOR) { tsk->maj_flt++; - else + perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 0, + regs, address); + } else { tsk->min_flt++; - + perf_swcounter_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 0, + regs, address); + } up_read(&mm->mmap_sem); /* * The instruction that caused the program check will |