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| author | Steven Rostedt <srostedt@redhat.com> | 2009-03-18 01:58:00 +0100 |
|---|---|---|
| committer | Steven Rostedt <srostedt@redhat.com> | 2009-03-18 04:12:11 +0100 |
| commit | 62524d55e5b9ffe36e3bf3dd7a594114f150b449 (patch) | |
| tree | 4e38825d35950ea962bbc44bdc78aea9ef909458 /kernel/trace/trace_power.c | |
| parent | tracing: make sched_switch stop/start light weight (diff) | |
| download | linux-62524d55e5b9ffe36e3bf3dd7a594114f150b449.tar.xz linux-62524d55e5b9ffe36e3bf3dd7a594114f150b449.zip | |
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.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/trace/trace_power.c b/kernel/trace/trace_power.c index 91ce672fb037..bae791ebcc51 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, }; |