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 b63fe90..736dcfb 100644 (file)
--- 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