From 75fb4090b39a3d7bf9ac77a28665c991ec5eaadc Mon Sep 17 00:00:00 2001
From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Sat, 3 Oct 2009 15:08:54 +0200
Subject: tracing: Use free_percpu instead of kfree
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@samba.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Li Zefan <lizf@cn.fujitsu.com>
---
kernel/trace/trace_event_profile.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/trace_event_profile.c b/kernel/trace/trace_event_profile.c
index e52784b7b844..8d5c171cc998 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;
}
--
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