diff options
| author |   Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-03-13 12:21:33 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-04-06 09:29:37 +0200 |
| commit | 7dd1fcc258b65da718f01e4684a7b9244501a9fb (patch) | |
| tree | 4fb864f493b9f1d47bedbc3c97b9de7df572d6ec /arch/powerpc/mm | |
| parent | perf_counter: software counter event infrastructure (diff) | |
| download | linux-dev-7dd1fcc258b65da718f01e4684a7b9244501a9fb.tar.xz linux-dev-7dd1fcc258b65da718f01e4684a7b9244501a9fb.zip | |
perf_counter: provide pagefault software events
We use the generic software counter infrastructure to provide
page fault events.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/fault.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index 76993941cac9..eda5b0ca4af2 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -29,6 +29,7 @@ #include <linux/module.h> #include <linux/kprobes.h> #include <linux/kdebug.h> +#include <linux/perf_counter.h> #include <asm/firmware.h> #include <asm/page.h> @@ -170,6 +171,8 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address, die("Weird page fault", regs, SIGSEGV); } + perf_swcounter_event(PERF_COUNT_PAGE_FAULTS, 1, 0, regs); + /* When running in the kernel we expect faults to occur only to * addresses in user space. All other faults represent errors in the * kernel and should generate an OOPS. Unfortunately, in the case of an |