From abc41254181e901ef5eda2c884ca6cd88a186b6d Mon Sep 17 00:00:00 2001 From: Jed Davis Date: Thu, 20 Jun 2013 04:07:14 +0100 Subject: [PATCH] perf: arm64: Record the user-mode PC in the call chain. With this change, we no longer lose the innermost entry in the user-mode part of the call chain. See also the x86 port, which includes the ip, and the corresponding change in arch/arm. Signed-off-by: Jed Davis Acked-by: Ingo Molnar Acked-by: Will Deacon Cc: stable@vger.kernel.org Signed-off-by: Catalin Marinas --- arch/arm64/kernel/perf_event.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c index 1e49e5eb81e..9ba33c40cdf 100644 --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -1336,6 +1336,7 @@ void perf_callchain_user(struct perf_callchain_entry *entry, return; } + perf_callchain_store(entry, regs->pc); tail = (struct frame_tail __user *)regs->regs[29]; while (entry->nr < PERF_MAX_STACK_DEPTH && -- 2.20.1