linux-kernel - Re: linux-next: build failure after merge of the mm tree

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Message-ID: <CAJuCfpEXqT-aHU39XMTtf-omJJUcQXtNF6RHmZ2bddqcVN0G=A@mail.gmail.com>
Date: Sun, 16 Feb 2025 15:22:23 -0800
From: Suren Baghdasaryan <surenb@...gle.com>
To: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Andrew Morton <akpm@...ux-foundation.org>, 
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, 
	Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the mm tree

On Sun, Feb 16, 2025 at 3:14 PM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Hi all,
>
> After merging the mm tree, today's linux-next build (powerpc native perf)
> failed like this:
>
> In file included from threadmap.c:4:
> tools/include/linux/refcount.h: In function 'refcount_set_release':
> tools/include/linux/refcount.h:65:9: error: implicit declaration of function 'atomic_set_release'; did you mean 'refcount_set_release'? [-Wimplicit-function-declaration]
>    65 |         atomic_set_release(&r->refs, n);
>       |         ^~~~~~~~~~~~~~~~~~
>       |         refcount_set_release
> tools/include/linux/refcount.h:65:9: error: nested extern declaration of 'atomic_set_release' [-Werror=nested-externs]
> cc1: all warnings being treated as errors
>
> (and several more similar)
>
> Caused by commit
>
>   1465347e498f ("mm: make vma cache SLAB_TYPESAFE_BY_RCU")
>
> from the mm-unstable branch of the mm tree.
>
> I have reverted that commit for today.

Thanks! I'll see if I can fix it quickly. I must be missing this
function under tools/ in some specific config.

>
> --
> Cheers,
> Stephen Rothwell