Commit e879b5dc authored by Tomas Glozar's avatar Tomas Glozar Committed by Steven Rostedt (Google)
Browse files

rtla: Add trace_instance_stop 

Support not only turning trace on for the timerlat tracer, but also
turning it off.

This will be used in subsequent patches to stop the timerlat tracer
without also wiping the trace buffer.

Cc: stable@vger.kernel.org
Cc: John Kacur <jkacur@redhat.com>
Cc: Luis Goncalves <lgoncalv@redhat.com>
Cc: Gabriele Monaco <gmonaco@redhat.com>
Link: https://lore.kernel.org/20250116144931.649593-2-tglozar@redhat.com


Signed-off-by: default avatarTomas Glozar <tglozar@redhat.com>
Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent ab16714f

tools/tracing/rtla/src/trace.c

+8 −0
Original line number Diff line number Diff line
@@ -196,6 +196,14 @@ int trace_instance_start(struct trace_instance *trace) 
	return tracefs_trace_on(trace->inst);

}



/*

 * trace_instance_stop - stop tracing a given rtla instance

 */

int trace_instance_stop(struct trace_instance *trace)

{

	return tracefs_trace_off(trace->inst);

}



/*

 * trace_events_free - free a list of trace events

 */

tools/tracing/rtla/src/trace.h

+1 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ struct trace_instance { 


int trace_instance_init(struct trace_instance *trace, char *tool_name);

int trace_instance_start(struct trace_instance *trace);

int trace_instance_stop(struct trace_instance *trace);

void trace_instance_destroy(struct trace_instance *trace);



struct trace_seq *get_trace_seq(void);