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authorSteven Rostedt <srostedt@redhat.com>2009-03-17 20:58:00 -0400
committerSteven Rostedt <srostedt@redhat.com>2009-03-17 23:12:11 -0400
commit62524d55e5b9ffe36e3bf3dd7a594114f150b449 (patch)
tree4e38825d35950ea962bbc44bdc78aea9ef909458 /kernel/trace/trace_power.c
parent5fec6ddcb43a91aa9a254c8ecf174c803de6f07e (diff)
tracing: make power tracer start/stop methods lighter weight
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>
Diffstat (limited to 'kernel/trace/trace_power.c')
-rw-r--r--kernel/trace/trace_power.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/trace/trace_power.c b/kernel/trace/trace_power.c
index 91ce672fb03..bae791ebcc5 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,
};