[PATCH 5/5] tracing: make power tracer start/stop methods lighter weight

[Steven Rostedt <rostedt@goodmis.org>]

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From: Steven Rostedt <srostedt@redhat.com>

The start/stop methods of a tracer should be able to be executed
in all contexts. This patch converts the power tracer to do so.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
---
 kernel/trace/trace_power.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/kernel/trace/trace_power.c b/kernel/trace/trace_power.c
index 91ce672..bae791e 100644
--- a/kernel/trace/trace_power.c
+++ b/kernel/trace/trace_power.c
@@ -122,12 +122,16 @@ fail_start:
 static void start_power_trace(struct trace_array *tr)
 {
 	trace_power_enabled = 1;
-	tracing_power_register();
 }
 
 static void stop_power_trace(struct trace_array *tr)
 {
 	trace_power_enabled = 0;
+}
+
+static void power_trace_reset(struct trace_array *tr)
+{
+	trace_power_enabled = 0;
 	unregister_trace_power_start(probe_power_start);
 	unregister_trace_power_end(probe_power_end);
 	unregister_trace_power_mark(probe_power_mark);
@@ -188,7 +192,7 @@ static struct tracer power_tracer __read_mostly =
 	.init		= power_trace_init,
 	.start		= start_power_trace,
 	.stop		= stop_power_trace,
-	.reset		= stop_power_trace,
+	.reset		= power_trace_reset,
 	.print_line	= power_print_line,
 };
 
-- 
1.6.2

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