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authorAnton Blanchard <anton@samba.org>2012-06-26 01:04:20 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-07-10 19:18:46 +1000
commit6da7094810df5408e32528024cb783f920c87a2c (patch)
tree5ee5d33f21e0ae02ed371e47a471b7716291a151 /arch/powerpc/perf
parent5c093efa6f2dd07d45835be870a20ed3b05b6ef5 (diff)
downloadlinaro-lsk-6da7094810df5408e32528024cb783f920c87a2c.tar.gz
powerpc/perf: Use perf_instruction_pointer in callchains
We use SIAR or regs->nip for the instruction pointer depending on the PMU configuration, but we always use regs->nip in the callchain. Use perf_instruction_pointer so the backtrace is consistent. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/perf')
-rw-r--r--arch/powerpc/perf/callchain.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c
index e8a18d1cc7c..74d1e780748 100644
--- a/arch/powerpc/perf/callchain.c
+++ b/arch/powerpc/perf/callchain.c
@@ -57,7 +57,7 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
lr = regs->link;
sp = regs->gpr[1];
- perf_callchain_store(entry, regs->nip);
+ perf_callchain_store(entry, perf_instruction_pointer(regs));
if (!validate_sp(sp, current, STACK_FRAME_OVERHEAD))
return;
@@ -238,7 +238,7 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry,
struct signal_frame_64 __user *sigframe;
unsigned long __user *fp, *uregs;
- next_ip = regs->nip;
+ next_ip = perf_instruction_pointer(regs);
lr = regs->link;
sp = regs->gpr[1];
perf_callchain_store(entry, next_ip);
@@ -444,7 +444,7 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry,
long level = 0;
unsigned int __user *fp, *uregs;
- next_ip = regs->nip;
+ next_ip = perf_instruction_pointer(regs);
lr = regs->link;
sp = regs->gpr[1];
perf_callchain_store(entry, next_ip);