From: Daniel Bristot de Oliveira bristot@kernel.org
commit b9f451a9029a16eb7913ace09b92493d00f2e564 upstream.
timerlat is not reporting a new tracing_max_latency for the thread latency. The reason is that it is not calling notify_new_max_latency() function after the new thread latency is sampled.
Call notify_new_max_latency() after computing the thread latency.
Link: https://lkml.kernel.org/r/16e18d61d69073d0192ace07bf61e405cca96e9c.168010418...
Cc: stable@vger.kernel.org Fixes: dae181349f1e ("tracing/osnoise: Support a list of trace_array *tr") Signed-off-by: Daniel Bristot de Oliveira bristot@kernel.org Signed-off-by: Steven Rostedt (Google) rostedt@goodmis.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- kernel/trace/trace_osnoise.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/kernel/trace/trace_osnoise.c +++ b/kernel/trace/trace_osnoise.c @@ -1681,6 +1681,8 @@ static int timerlat_main(void *data)
trace_timerlat_sample(&s);
+ notify_new_max_latency(diff); + timerlat_dump_stack(time_to_us(diff));
tlat->tracing_thread = false;