This is a note to let you know that I've just added the patch titled
perf: arm64: Record the user-mode PC in the call chain.
to the 3.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
perf-arm64-record-the-user-mode-pc-in-the-call-chain.patch
and it can be found in the queue-3.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From abc41254181e901ef5eda2c884ca6cd88a186b6d Mon Sep 17 00:00:00 2001
From: Jed Davis <jld@xxxxxxxxxxx>
Date: Thu, 20 Jun 2013 04:07:14 +0100
Subject: perf: arm64: Record the user-mode PC in the call chain.
From: Jed Davis <jld@xxxxxxxxxxx>
commit abc41254181e901ef5eda2c884ca6cd88a186b6d upstream.
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 <jld@xxxxxxxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxxxxx>
Acked-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/kernel/perf_event.c | 1 +
1 file changed, 1 insertion(+)
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -1336,6 +1336,7 @@ void perf_callchain_user(struct perf_cal
return;
}
+ perf_callchain_store(entry, regs->pc);
tail = (struct frame_tail __user *)regs->regs[29];
while (entry->nr < PERF_MAX_STACK_DEPTH &&
Patches currently in stable-queue which might be from jld@xxxxxxxxxxx are
queue-3.9/perf-arm64-record-the-user-mode-pc-in-the-call-chain.patch
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