From: Daniel Bristot de Oliveira bristot@kernel.org

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 --- 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 9176bb7a9bb4..e8116094bed8 100644 --- a/kernel/trace/trace_osnoise.c +++ b/kernel/trace/trace_osnoise.c @@ -1738,6 +1738,8 @@ 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;