From a7cc91001e36a4a4152c3ada6c8fe38adc5badbc Mon Sep 17 00:00:00 2001
From: Jean Pihet <jean.pihet@linaro.org>
Date: Mon, 7 Jul 2014 14:45:08 +0100
Subject: [PATCH] ARM: perf: Check that current->mm is alive before getting
 user callchain

An event may occur when an mm is already released.

As per commit 20afc60f892d285fde179ead4b24e6a7938c2f1b
 'x86, perf: Check that current->mm is alive before getting user callchain'

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jean Pihet <jean.pihet@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---
Reading git-format-patch failed