From: Tomas Glozar <tglo...@redhat.com> [ Upstream commit d6899e560366e10141189697502bc5521940c588 ]
If either SIGINT is received twice, or after a SIGALRM (that is, after timerlat was supposed to stop), abort processing events currently left in the tracefs buffer and exit immediately. This allows the user to exit rtla without waiting for processing all events, should that take longer than wanted, at the cost of not processing all samples. Cc: John Kacur <jka...@redhat.com> Cc: Luis Goncalves <lgonc...@redhat.com> Cc: Gabriele Monaco <gmon...@redhat.com> Link: https://lore.kernel.org/20250116144931.649593-5-tglo...@redhat.com Signed-off-by: Tomas Glozar <tglo...@redhat.com> Signed-off-by: Steven Rostedt (Google) <rost...@goodmis.org> Signed-off-by: Sasha Levin <sas...@kernel.org> --- tools/tracing/rtla/src/timerlat_hist.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/tracing/rtla/src/timerlat_hist.c b/tools/tracing/rtla/src/timerlat_hist.c index 2cc3ffcbc983d..8dc33e1e6aed2 100644 --- a/tools/tracing/rtla/src/timerlat_hist.c +++ b/tools/tracing/rtla/src/timerlat_hist.c @@ -1139,6 +1139,14 @@ static struct osnoise_tool static int stop_tracing; static void stop_hist(int sig) { + if (stop_tracing) { + /* + * Stop requested twice in a row; abort event processing and + * exit immediately + */ + tracefs_iterate_stop(hist_inst->inst); + return; + } stop_tracing = 1; } -- 2.39.5
