Commit-ID: 8bcae09b93e7f96f700b6bb372c2b3f2b36636dc Gitweb: http://git.kernel.org/tip/8bcae09b93e7f96f700b6bb372c2b3f2b36636dc Author: Zhaolei <zhaolei@xxxxxxxxxxxxxx> AuthorDate: Tue, 31 Mar 2009 15:24:51 +0800 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Tue, 7 Apr 2009 14:01:11 +0200 ftrace: Add check of sched_stopped for probe_sched_wakeup The wakeup tracing in sched_switch does not stop when a user disables tracing. This is because the probe_sched_wakeup() is missing the check to prevent the wakeup from being traced. Signed-off-by: Zhao Lei <zhaolei@xxxxxxxxxxxxxx> LKML-Reference: <49D1C543.3010307@xxxxxxxxxxxxxx> Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- kernel/trace/trace_sched_switch.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/kernel/trace/trace_sched_switch.c b/kernel/trace/trace_sched_switch.c index de35f20..9117cea 100644 --- a/kernel/trace/trace_sched_switch.c +++ b/kernel/trace/trace_sched_switch.c @@ -62,6 +62,9 @@ probe_sched_wakeup(struct rq *__rq, struct task_struct *wakee, int success) pc = preempt_count(); tracing_record_cmdline(current); + if (sched_stopped) + return; + local_irq_save(flags); cpu = raw_smp_processor_id(); data = ctx_trace->data[cpu]; -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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