From: Steven Rostedt <rostedt@goodmis.org>
Date: Mon, 12 May 2008 19:20:54 +0000 (+0200)
Subject: ftrace: remove wakeup from function trace
X-Git-Tag: v2.6.27-rc1~1102^2^2~1^2~75
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=8f96da02c14d722ad9a3713cd7273ce28c9036ad;p=linux-2.6-omap-h63xx.git

ftrace: remove wakeup from function trace

trace_function is called by mcount and calling wake_up from that
can have unpredictable results. This patch removes the wakeup from
trace_function.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index b63fe909f87..736dcfb3ed0 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -659,8 +659,6 @@ trace_function(struct trace_array *tr, struct trace_array_cpu *data,
 	entry->fn.ip		= ip;
 	entry->fn.parent_ip	= parent_ip;
 	spin_unlock_irqrestore(&data->lock, irq_flags);
-
-	trace_wake_up();
 }
 
 void