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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>
This commit is contained in:
Anton Blanchard 2012-06-26 01:04:20 +00:00 committed by Benjamin Herrenschmidt
parent 5c093efa6f
commit 6da7094810
1 changed files with 3 additions and 3 deletions
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6
arch/powerpc/perf/callchain.c
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@ -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);