[PATCH 2/2] tracing: Use free_percpu instead of kfree

[Frederic Weisbecker]

In the event->profile_enable() failure path, we release the per cpu
buffers using kfree which is wrong because they are per cpu pointers.
Although free_percpu only wraps kfree for now, that may change in the
future so lets use the correct way.

Reported-by: Paul Mackerras <paulus@xxxxxxxxx>
Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Li Zefan <lizf@xxxxxxxxxxxxxx>
---
 kernel/trace/trace_event_profile.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/trace/trace_event_profile.c b/kernel/trace/trace_event_profile.c
index e52784b..8d5c171 100644
--- a/kernel/trace/trace_event_profile.c
+++ b/kernel/trace/trace_event_profile.c
@@ -53,8 +53,8 @@ static int ftrace_profile_enable_event(struct ftrace_event_call *event)
 
 fail_buf_nmi:
 	if (!total_profile_count) {
-		kfree(trace_profile_buf_nmi);
-		kfree(trace_profile_buf);
+		free_percpu(trace_profile_buf_nmi);
+		free_percpu(trace_profile_buf);
 		trace_profile_buf_nmi = NULL;
 		trace_profile_buf = NULL;
 	}
-- 
1.6.2.3

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