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>

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c
index e8a18d1cc7c9..74d1e780748b 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);