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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-04-08 15:01:33 +0200
committerIngo Molnar <mingo@elte.hu>2009-04-08 19:05:56 +0200
commit78f13e9525ba777da25c4ddab89f28e9366a8b7c (patch)
treed23d43df02330f39e9c31901df9956d2e58a3474 /arch/x86/mm
parent4d855457d84b819fefcd1cd1b0a2a0a0ec475c07 (diff)
perf_counter: allow for data addresses to be recorded
Paul suggested we allow for data addresses to be recorded along with the traditional IPs as power can provide these. For now, only the software pagefault events provide data addresses, but in the future power might as well for some events. x86 doesn't seem capable of providing this atm. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> LKML-Reference: <20090408130409.394816925@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm')
-rw-r--r--arch/x86/mm/fault.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index f2d3324d921..6f9df2babe4 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -1045,7 +1045,7 @@ do_page_fault(struct pt_regs *regs, unsigned long error_code)
if (unlikely(error_code & PF_RSVD))
pgtable_bad(regs, error_code, address);
- perf_swcounter_event(PERF_COUNT_PAGE_FAULTS, 1, 0, regs);
+ perf_swcounter_event(PERF_COUNT_PAGE_FAULTS, 1, 0, regs, address);
/*
* If we're in an interrupt, have no user context or are running
@@ -1142,10 +1142,12 @@ good_area:
if (fault & VM_FAULT_MAJOR) {
tsk->maj_flt++;
- perf_swcounter_event(PERF_COUNT_PAGE_FAULTS_MAJ, 1, 0, regs);
+ perf_swcounter_event(PERF_COUNT_PAGE_FAULTS_MAJ, 1, 0,
+ regs, address);
} else {
tsk->min_flt++;
- perf_swcounter_event(PERF_COUNT_PAGE_FAULTS_MIN, 1, 0, regs);
+ perf_swcounter_event(PERF_COUNT_PAGE_FAULTS_MIN, 1, 0,
+ regs, address);
}
check_v8086_mode(regs, address, tsk);