Re: [PATCH v3 13/68] selftests/damon: Drop define _GNU_SOURCE

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Hi Edward,

On Thu,  9 May 2024 19:58:05 +0000 Edward Liaw <edliaw@xxxxxxxxxx> wrote:

> _GNU_SOURCE is provided by lib.mk, so it should be dropped to prevent
> redefinition warnings.
> 
> Fixes: 809216233555 ("selftests/harness: remove use of LINE_MAX")

I show Mathieu's comment on this[1].  I have no strong opinion on this, but if
you conclude to remove or change this line, please apply same change to this
patch.

[1] https://lore.kernel.org/638a7831-493c-4917-9b22-5aa663e9ee84@xxxxxxxxxxxx

> Signed-off-by: Edward Liaw <edliaw@xxxxxxxxxx>

I also added trivial comments that coming from my personal and humble
preferrence below.  Other than the above and the below comments,

Reviewed-by: SeongJae Park <sj@xxxxxxxxxx>

> ---
>  tools/testing/selftests/damon/debugfs_target_ids_pid_leak.c    | 3 ---
>  .../damon/debugfs_target_ids_read_before_terminate_race.c      | 2 --
>  2 files changed, 5 deletions(-)
> 
> diff --git a/tools/testing/selftests/damon/debugfs_target_ids_pid_leak.c b/tools/testing/selftests/damon/debugfs_target_ids_pid_leak.c
> index 0cc2eef7d142..7a17a03d555c 100644
> --- a/tools/testing/selftests/damon/debugfs_target_ids_pid_leak.c
> +++ b/tools/testing/selftests/damon/debugfs_target_ids_pid_leak.c
> @@ -2,9 +2,6 @@
>  /*
>   * Author: SeongJae Park <sj@xxxxxxxxxx>
>   */
> -
> -#define _GNU_SOURCE
> -
>  #include <fcntl.h>

I'd prefer having one empty line between the comment and includes.

>  #include <stdbool.h>
>  #include <stdint.h>
> diff --git a/tools/testing/selftests/damon/debugfs_target_ids_read_before_terminate_race.c b/tools/testing/selftests/damon/debugfs_target_ids_read_before_terminate_race.c
> index b06f52a8ce2d..4aeac55ac93e 100644
> --- a/tools/testing/selftests/damon/debugfs_target_ids_read_before_terminate_race.c
> +++ b/tools/testing/selftests/damon/debugfs_target_ids_read_before_terminate_race.c
> @@ -2,8 +2,6 @@
>  /*
>   * Author: SeongJae Park <sj@xxxxxxxxxx>
>   */
> -#define _GNU_SOURCE
> -
>  #include <fcntl.h>

Ditto.

And I realize I also forgot adding one empty line before the above #define
line.  That's why I'm saying this is just a trivial comment :)

>  #include <stdbool.h>
>  #include <stdint.h>
> -- 
> 2.45.0.118.g7fe29c98d7-goog


Thanks,
SJ




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