linux-kernel - Re: [PATCH 3/3] selftests/futex: pass _GNU_SOURCE without a value to the compiler

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Date: Tue, 28 May 2024 15:43:35 -0700
From: John Hubbard <jhubbard@...dia.com>
To: Edward Liaw <edliaw@...gle.com>
CC: Shuah Khan <shuah@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, "Ingo
 Molnar" <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, Darren
 Hart <dvhart@...radead.org>, Davidlohr Bueso <dave@...olabs.net>,
	André Almeida <andrealmeid@...lia.com>, "Nysal Jan K . A"
	<nysal@...ux.ibm.com>, Mark Brown <broonie@...nel.org>, Valentin Obst
	<kernel@...entinobst.de>, <linux-kselftest@...r.kernel.org>, LKML
	<linux-kernel@...r.kernel.org>, <llvm@...ts.linux.dev>
Subject: Re: [PATCH 3/3] selftests/futex: pass _GNU_SOURCE without a value to
 the compiler

On 5/28/24 3:24 PM, Edward Liaw wrote:
> On Wed, May 8, 2024 at 2:05 PM John Hubbard <jhubbard@...dia.com> wrote:
>>
>> On 5/2/24 9:18 PM, John Hubbard wrote:
>>> It's slightly better to set _GNU_SOURCE in the source code, but if one
>>> must do it via the compiler invocation, then the best way to do so is
>>> this:
>>
>> Hi Shuah, Edward and all,
>>
>> This patch now seems to be obsolete, due to Edward Liaw's comprehensive
>> fix, "[PATCH v2 0/5] Define _GNU_SOURCE for sources using" [1].
>>
>> [1] https://lore.kernel.org/20240507214254.2787305-1-edliaw@google.com
> 
> Since we're dropping that patch, would we be able to merge this one?
> This should resolve the futex_requeue_pi compiler warnings with Clang.
> 
> Reviewed-by: Edward Liaw <edliaw@...gle.com>

Thanks for the review! I can post a v2 of this tiny series that has only
patches 1 and 3, rebased on -rc1, so that it's clear what to merge.


thanks,
-- 
John Hubbard
NVIDIA