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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>
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@ -57,7 +57,7 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
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lr = regs->link;
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sp = regs->gpr[1];
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perf_callchain_store(entry, regs->nip);
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perf_callchain_store(entry, perf_instruction_pointer(regs));
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if (!validate_sp(sp, current, STACK_FRAME_OVERHEAD))
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return;
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@ -238,7 +238,7 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry,
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struct signal_frame_64 __user *sigframe;
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unsigned long __user *fp, *uregs;
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next_ip = regs->nip;
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next_ip = perf_instruction_pointer(regs);
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lr = regs->link;
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sp = regs->gpr[1];
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perf_callchain_store(entry, next_ip);
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@ -444,7 +444,7 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry,
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long level = 0;
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unsigned int __user *fp, *uregs;
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next_ip = regs->nip;
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next_ip = perf_instruction_pointer(regs);
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lr = regs->link;
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sp = regs->gpr[1];
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perf_callchain_store(entry, next_ip);
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