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authorHeiko Carstens <heiko.carstens@de.ibm.com>2009-09-11 10:29:06 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-09-11 10:29:56 +0200
commitbde69af2ab696eebfac9583ea1e8a46b571e317f (patch)
tree1f1d6b75c91a6e6a989251af2f3ead5908d8647b /arch/s390/mm
parent5c0b912e755caaad555eb6feefdb1124462d8f37 (diff)
downloadlinux-linaro-android-bde69af2ab696eebfac9583ea1e8a46b571e317f.tar.gz
[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/s390/mm')
-rw-r--r--arch/s390/mm/fault.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index e5e119fe03b..1abbadd497e 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