Messages in this thread Patch in this message | | | Date | Fri, 27 May 2022 22:50:39 -0400 | From | Steven Rostedt <> | Subject | [for-next][PATCH 11/23] tracing/timerlat: Do not wakeup the thread if the trace stops at the IRQ |
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From: Daniel Bristot de Oliveira <bristot@kernel.org>
There is no need to wakeup the timerlat/ thread if stop tracing is hit at the timerlat's IRQ handler.
Return before waking up timerlat's thread.
Link: https://lkml.kernel.org/r/b392356c91b56aedd2b289513cc56a84cf87e60d.1652175637.git.bristot@kernel.org
Cc: Juri Lelli <juri.lelli@redhat.com> Cc: Clark Williams <williams@redhat.com> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> --- kernel/trace/trace_osnoise.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c index 9b204ee3c6f5..035ec8b84e12 100644 --- a/kernel/trace/trace_osnoise.c +++ b/kernel/trace/trace_osnoise.c @@ -1595,6 +1595,8 @@ static enum hrtimer_restart timerlat_irq(struct hrtimer *timer) osnoise_stop_tracing(); notify_new_max_latency(diff); + + return HRTIMER_NORESTART; } } -- 2.35.1
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