3.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jed Davis <[email protected]>

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 <[email protected]>
Acked-by: Ingo Molnar <[email protected]>
Acked-by: Will Deacon <[email protected]>
Signed-off-by: Catalin Marinas <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 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 &&


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