linux-kernel - Re: [PATCH v3] workqueue: Wrap flush

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Date:   Mon, 16 May 2022 10:34:40 +0200
From:   Rasmus Villemoes <rasmus.villemoes@...vas.dk>
To:     Joe Perches <joe@...ches.com>,
        Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
        Tejun Heo <tj@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, gcc <gcc@....gnu.org>
Subject: Re: [PATCH v3] workqueue: Wrap flush_workqueue() using a macro

On 16/05/2022 09.18, Joe Perches wrote:
> On Mon, 2022-05-16 at 14:00 +0900, Tetsuo Handa wrote:
> []
>> Changes in v3:
>>   Revert suggested change in v2, for kernel test robot <lkp@...el.com> found
>>
>>     warning: Function parameter or member 'flush_workqueue' not described in 'void'
>>     warning: expecting prototype for flush_workqueue(). Prototype was for void() instead
>>
>>   when built with W=1 option.
> 
> Odd, perhaps that not a valid error message and is a defect
> in gcc's parsing of function definitions.

Nah, gcc isn't buggy in such a fundamental part of parsing C. It's not a
warning from gcc, nor from sparse (or smatch).

It's from the perl script scripts/kernel-doc .

Rasmus