On Thu, 2025-01-16 at 15:49 +0100, Tomas Glozar wrote:
> Apply the changes from the previous patch also to timerlat-top.
>
> Signed-off-by: Tomas Glozar <tglo...@redhat.com>
> ---
> tools/tracing/rtla/src/timerlat_top.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/tools/tracing/rtla/src/timerlat_top.c
> b/tools/tracing/rtla/src/timerlat_top.c
> index d21a21053917..d358cd39f360 100644
> --- a/tools/tracing/rtla/src/timerlat_top.c
> +++ b/tools/tracing/rtla/src/timerlat_top.c
> @@ -903,6 +903,14 @@ static int stop_tracing;
> static struct trace_instance *top_inst = NULL;
> static void stop_top(int sig)
> {
> + if (stop_tracing) {
> + /*
> + * Stop requested twice in a row; abort event
> processing and
> + * exit immediately
> + */
> + tracefs_iterate_stop(top_inst->inst);
> + return;
> + }
> stop_tracing = 1;
> if (top_inst)
> trace_instance_stop(top_inst);
I confirm the patchset works as expected on a 128 cores machine.
That is like the machine where the problem was first observed: run
timerlat with -p 100 and it would hang.
Now running it with -d terminates (a bit) after the expiration of the
timer with a sane report, sending a SIGINT terminates it too and
sending 2 SIGINT terminates it almost instantaneously.
This works on both timerlat top and hist, with both -u and -k .
The report only gets printed in the end (as if -q was passed), but
these patches are not meant to fix that.
Tested-by: Gabriele Monaco <gmon...@redhat.com>
