On Wed, Mar 10, 2021 at 12:41:17PM -0800, Ian Rogers wrote:
> Reorder daemon_start and daemon_exit as the trap handler is added in
> daemon_start referencing daemon_exit.

makes sense, minor comments below

> 
> Signed-off-by: Ian Rogers <irog...@google.com>
> ---
>  tools/perf/tests/shell/daemon.sh | 34 +++++++++++++++++++-------------
>  1 file changed, 20 insertions(+), 14 deletions(-)
> 
> diff --git a/tools/perf/tests/shell/daemon.sh 
> b/tools/perf/tests/shell/daemon.sh
> index 66ad56b4e0a5..a02cedc76de6 100755
> --- a/tools/perf/tests/shell/daemon.sh
> +++ b/tools/perf/tests/shell/daemon.sh
> @@ -98,6 +98,23 @@ check_line_other()
>       fi
>  }
>  
> +daemon_exit()
> +{
> +     local config=$1
> +
> +     local line=`perf daemon --config ${config} -x: | head -1`
> +     local pid=`echo "${line}" | awk 'BEGIN { FS = ":" } ; { print $1 }'`
> +
> +        # Reset trap handler.
> +        trap - SIGINT SIGTERM

please keep the 'tabs' in here

> +
> +     # stop daemon
> +     perf daemon stop --config ${config}
> +
> +     # ... and wait for the pid to go away
> +     tail --pid=${pid} -f /dev/null
> +}
> +
>  daemon_start()
>  {
>       local config=$1
> @@ -105,6 +122,9 @@ daemon_start()
>  
>       perf daemon start --config ${config}
>  
> +        # Clean up daemon if interrupted.
> +        trap "daemon_exit ${config}; exit 4" SIGINT SIGTERM

ditto, plus let's document exit values somewhere in comments,
I think the next patch is adding exit 62, so that one as well

thanks,
jirka

> +
>       # wait for the session to ping
>       local state="FAIL"
>       while [ "${state}" != "OK" ]; do
> @@ -113,20 +133,6 @@ daemon_start()
>       done
>  }
>  
> -daemon_exit()
> -{
> -     local config=$1
> -
> -     local line=`perf daemon --config ${config} -x: | head -1`
> -     local pid=`echo "${line}" | awk 'BEGIN { FS = ":" } ; { print $1 }'`
> -
> -     # stop daemon
> -     perf daemon stop --config ${config}
> -
> -     # ... and wait for the pid to go away
> -     tail --pid=${pid} -f /dev/null
> -}
> -
>  test_list()
>  {
>       echo "test daemon list"
> -- 
> 2.30.1.766.gb4fecdf3b7-goog
> 

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