linux-kernel - Re: [PATCH v3 13/68] selftests/damon: Drop define _GNU

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Message-ID: <CAG4es9WMDZ6qD1+0MhDN_dD676tB1em34fpRe2wuoefkTGGPHA@mail.gmail.com>
Date: Thu, 9 May 2024 14:19:23 -0700
From: Edward Liaw <edliaw@...gle.com>
To: SeongJae Park <sj@...nel.org>
Cc: shuah@...nel.org, Mickaël Salaün <mic@...ikod.net>, 
	Günther Noack <gnoack@...gle.com>, 
	Christian Brauner <brauner@...nel.org>, Richard Cochran <richardcochran@...il.com>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Alexei Starovoitov <ast@...nel.org>, 
	Daniel Borkmann <daniel@...earbox.net>, "David S. Miller" <davem@...emloft.net>, 
	Jakub Kicinski <kuba@...nel.org>, Jesper Dangaard Brouer <hawk@...nel.org>, 
	John Fastabend <john.fastabend@...il.com>, Muhammad Usama Anjum <usama.anjum@...labora.com>, 
	Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org, 
	linux-kselftest@...r.kernel.org, kernel-team@...roid.com, 
	linux-security-module@...r.kernel.org, netdev@...r.kernel.org, 
	linux-riscv@...ts.infradead.org, bpf@...r.kernel.org, damon@...ts.linux.dev, 
	linux-mm@...ck.org, mathieu.desnoyers@...icios.com
Subject: Re: [PATCH v3 13/68] selftests/damon: Drop define _GNU_SOURCE

On Thu, May 9, 2024 at 1:31 PM SeongJae Park <sj@...nel.org> wrote:
>
> Hi Edward,
>
> On Thu,  9 May 2024 19:58:05 +0000 Edward Liaw <edliaw@...gle.com> 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.

Will do, thanks for reviewing.

>
> [1] https://lore.kernel.org/638a7831-493c-4917-9b22-5aa663e9ee84@efficioscom
>
> > Signed-off-by: Edward Liaw <edliaw@...gle.com>
>
> 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@...nel.org>
>
> > ---
> >  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@...nel.org>
> >   */
> > -
> > -#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@...nel.org>
> >   */
> > -#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 :)

No problem, I will add it back in.

Thanks,
Edward


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