linux-kernel - Re: [PATCH] perf test: Fixed masked error condition in perf data convert test

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Message-ID: <726d2423-13a-010-e72e-8d3366f9c542@os.amperecomputing.com>
Date: Tue, 16 Jan 2024 23:37:34 -0800 (PST)
From: Ilkka Koskinen <ilkka@...amperecomputing.com>
To: James Clark <james.clark@....com>
cc: linux-perf-users@...r.kernel.org, ilkka@...amperecomputing.com, 
    Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
    Arnaldo Carvalho de Melo <acme@...nel.org>, 
    Namhyung Kim <namhyung@...nel.org>, Mark Rutland <mark.rutland@....com>, 
    Alexander Shishkin <alexander.shishkin@...ux.intel.com>, 
    Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>, 
    Adrian Hunter <adrian.hunter@...el.com>, 
    Athira Rajeev <atrajeev@...ux.vnet.ibm.com>, 
    Anup Sharma <anupnewsmail@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf test: Fixed masked error condition in perf data
 convert test



On Fri, 12 Jan 2024, James Clark wrote:

> The test does set -e, so any errors go straight to the exit handler,
> where it returns err=0 (success). Fix it by leaving err=1 from the
> beginning and only set the success code if it ran all the way to the end
> without errors.
>
> Also remove the exit code argument from the last exit because it doesn't
> do anything, it's always replaced by err in the exit handler.
>
> Fixes: 68d124182610 ("perf test: Add test validating JSON generated by 'perf data convert --to-json'")
> Signed-off-by: James Clark <james.clark@....com>

Looks good to me.


Reviewed-by: Ilkka Koskinen <ilkka@...amperecomputing.com>

Cheers, Ilkka

> ---
> tools/perf/tests/shell/test_perf_data_converter_json.sh | 9 +++++----
> 1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/tools/perf/tests/shell/test_perf_data_converter_json.sh b/tools/perf/tests/shell/test_perf_data_converter_json.sh
> index c4f1b59d116f..1781b7215c11 100755
> --- a/tools/perf/tests/shell/test_perf_data_converter_json.sh
> +++ b/tools/perf/tests/shell/test_perf_data_converter_json.sh
> @@ -4,7 +4,7 @@
>
> set -e
>
> -err=0
> +err=1
>
> shelldir=$(dirname "$0")
> # shellcheck source=lib/setup_python.sh
> @@ -36,7 +36,6 @@ test_json_converter_command()
> 		echo "Perf Data Converter Command to JSON [SUCCESS]"
> 	else
> 		echo "Perf Data Converter Command to JSON [FAILED]"
> -		err=1
> 		exit
> 	fi
> }
> @@ -49,7 +48,6 @@ validate_json_format()
> 			echo "The file contains valid JSON format [SUCCESS]"
> 		else
> 			echo "The file does not contain valid JSON format [FAILED]"
> -			err=1
> 			exit
> 		fi
> 	else
> @@ -62,4 +60,7 @@ validate_json_format()
> test_json_converter_command
> validate_json_format
>
> -exit ${err}
> +# Set -e is on, so it was only successful if it ran up to this point.
> +# Therefore only set err=0 here.
> +err=0
> +exit
> -- 
> 2.34.1
>
>