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authorFrederic Weisbecker <fweisbec@gmail.com>2008-10-31 13:14:28 +0100
committerIngo Molnar <mingo@elte.hu>2008-11-04 17:14:05 +0100
commite55f605c14679c30be41473e60b7ad26524cdc35 (patch)
tree3204ee5f0ed1beac112fb38de72d0bc4412edddb /kernel/trace
parent07695fa04e8a3384b0c855398ce1f7885bd7dc3b (diff)
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/trace')
-rw-r--r--kernel/trace/trace_sched_switch.c8
1 files changed, 0 insertions, 8 deletions
diff --git a/kernel/trace/trace_sched_switch.c b/kernel/trace/trace_sched_switch.c
index 59de5141207..96620c71430 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);