Commit d3cba7f0 authored by Daniel Bristot de Oliveira's avatar Daniel Bristot de Oliveira Committed by Steven Rostedt (Google)
Browse files

tracing/osnoise: Fix notify new tracing_max_latency 

osnoise/timerlat tracers are reporting new max latency on instances
where the tracing is off, creating inconsistencies between the max
reported values in the trace and in the tracing_max_latency. Thus
only report new tracing_max_latency on active tracing instances.

Link: https://lkml.kernel.org/r/ecd109fde4a0c24ab0f00ba1e9a144ac19a91322.1680104184.git.bristot@kernel.org



Cc: stable@vger.kernel.org
Fixes: dae18134 ("tracing/osnoise: Support a list of trace_array *tr")
Signed-off-by: default avatarDaniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent b9f451a9

kernel/trace/trace_osnoise.c

+1 −1
Original line number Diff line number Diff line
@@ -1296,7 +1296,7 @@ static void notify_new_max_latency(u64 latency) 
	rcu_read_lock();

	list_for_each_entry_rcu(inst, &osnoise_instances, list) {

		tr = inst->tr;

		if (tr->max_latency < latency) {

		if (tracer_tracing_is_on(tr) && tr->max_latency < latency) {

			tr->max_latency = latency;

			latency_fsnotify(tr);

		}