linux-kernel - Re: [PATCH v1] perf tests sched: Avoid error in cleanup on loaded machines

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Message-ID: <aXOm3bctXs8i6cfC@x1>
Date: Fri, 23 Jan 2026 13:50:37 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	James Clark <james.clark@...aro.org>,
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] perf tests sched: Avoid error in cleanup on loaded
 machines

On Thu, Jan 22, 2026 at 09:53:37AM -0800, Ian Rogers wrote:
> The stop_noploops function will kill the noploop processes that are
> running for 10 seconds. On a loaded machine they may have already
> terminated meaning the kill will return an error of no such
> process. This doesn't matter and so ignore the error to avoid the test
> terminating in the cleanup.
> 
> Fixes: 0e22c5ca44e6 ("perf test: Add sched latency and script shell tests")



Thanks, applied to perf-tools-next,

- Arnaldo

> Signed-off-by: Ian Rogers <irogers@...gle.com>
> ---
>  tools/perf/tests/shell/sched.sh | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/tests/shell/sched.sh b/tools/perf/tests/shell/sched.sh
> index b9b81eaf856e..b9637069adb1 100755
> --- a/tools/perf/tests/shell/sched.sh
> +++ b/tools/perf/tests/shell/sched.sh
> @@ -53,7 +53,7 @@ start_noploops() {
>  }
>  
>  cleanup_noploops() {
> -  kill "$PID1" "$PID2"
> +  kill "$PID1" "$PID2" || true
>  }
>  
>  test_sched_record() {
> -- 
> 2.52.0.457.g6b5491de43-goog