diff options
| author | Frederic Weisbecker <fweisbec@gmail.com> | 2008-10-31 13:14:28 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-04 17:14:05 +0100 |
| commit | e55f605c14679c30be41473e60b7ad26524cdc35 (patch) | |
| tree | 3204ee5f0ed1beac112fb38de72d0bc4412edddb /kernel | |
| parent | tracing/ftrace: fix a race condition in sched_switch tracer (diff) | |
| download | linux-e55f605c14679c30be41473e60b7ad26524cdc35.tar.xz linux-e55f605c14679c30be41473e60b7ad26524cdc35.zip | |
tracing/ftrace: remove unused code in sched_switch tracer
Impact: cleanup
When init_sched_switch_trace() is called, it has no reason to start
the sched tracer if the sched_ref is not zero.
_ If this is non-zero, the tracer is already used, but we can register it
to the tracing engine. There is already a security which avoid the tracer
probes not to be resgistered twice.
_ If this is zero, this block will not be used.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace_sched_switch.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/kernel/trace/trace_sched_switch.c b/kernel/trace/trace_sched_switch.c index 59de5141207c..96620c714300 100644 --- a/kernel/trace/trace_sched_switch.c +++ b/kernel/trace/trace_sched_switch.c @@ -203,14 +203,6 @@ static struct tracer sched_switch_trace __read_mostly = __init static int init_sched_switch_trace(void) { - int ret = 0; - - if (atomic_read(&sched_ref)) - ret = tracing_sched_register(); - if (ret) { - pr_info("error registering scheduler trace\n"); - return ret; - } return register_tracer(&sched_switch_trace); } device_initcall(init_sched_switch_trace); |