linux-kernel - Re: [PATCH v3 2/7] selftests/resctrl: Extend signal handler coverage to unmount on receiving signal

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Date:   Fri, 29 Sep 2023 09:55:55 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        <linux-kselftest@...r.kernel.org>, Shuah Khan <shuah@...nel.org>,
        Maciej Wieczór-Retman 
        <maciej.wieczor-retman@...el.com>,
        Shaopeng Tan <tan.shaopeng@...fujitsu.com>
CC:     <linux-kernel@...r.kernel.org>, <stable@...r.kernel.org>
Subject: Re: [PATCH v3 2/7] selftests/resctrl: Extend signal handler coverage
 to unmount on receiving signal

Hi Ilpo,

On 9/29/2023 4:20 AM, Ilpo Järvinen wrote:
...
> diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c
> index 823672a20a43..4eab2fad97fb 100644
> --- a/tools/testing/selftests/resctrl/resctrl_tests.c
> +++ b/tools/testing/selftests/resctrl/resctrl_tests.c
> @@ -67,21 +67,45 @@ void tests_cleanup(void)
>  	cat_test_cleanup();
>  }
>  
> -static void run_mbm_test(const char * const *benchmark_cmd, int cpu_no)
> +static int test_prepare()

Please change to test_prepare(void) (checkpatch error).

>  {
>  	int res;
>  
> -	ksft_print_msg("Starting MBM BW change ...\n");
> +	res = signal_handler_register();
> +	if (res) {
> +		ksft_print_msg("Failed to register signal handler\n");
> +		return res;
> +	}
>  
>  	res = mount_resctrlfs();
>  	if (res) {
> -		ksft_exit_fail_msg("Failed to mount resctrl FS\n");
> +		signal_handler_unregister();
> +		ksft_print_msg("Failed to mount resctrl FS\n");
> +		return res;
> +	}
> +	return 0;
> +}
> +
> +static void test_cleanup()

Please change to test_cleanup(void) (checkpatch error).

> +{
> +	umount_resctrlfs();
> +	signal_handler_unregister();
> +}
> +

With the above two reports addressed you can add:

Reviewed-by: Reinette Chatre <reinette.chatre@...el.com>

Thank you.

Reinette