linux-kernel - Re: spinlock.c:306:9: error: implicit declaration of function '__raw_write_lock

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Message-ID: <CAK8P3a2FHrrcDZfynjG7BdJVd2wxrWMOMO7dO4wjb1h8_jkRtQ@mail.gmail.com>
Date:   Wed, 24 Nov 2021 15:21:11 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     André Almeida <andrealmeid@...labora.com>
Cc:     Arnd Bergmann <arnd@...db.de>, Rob Landley <rob@...dley.net>,
        Naresh Kamboju <naresh.kamboju@...aro.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Linux-sh list <linux-sh@...r.kernel.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        Waiman Long <longman@...hat.com>,
        Boqun Feng <boqun.feng@...il.com>,
        Minchan Kim <minchan@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mike Galbraith <umgwanakikbuti@...il.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>, lkft-triage@...ts.linaro.org
Subject: Re: spinlock.c:306:9: error: implicit declaration of function '__raw_write_lock_nested'

On Wed, Nov 24, 2021 at 2:15 PM André Almeida <andrealmeid@...labora.com> wrote:
> Às 04:49 de 24/11/21, Arnd Bergmann escreveu:
> > On Wed, Nov 24, 2021 at 8:31 AM Rob Landley <rob@...dley.net> wrote:
> >> On 11/23/21 5:38 AM, Naresh Kamboju wrote:
> >> @@ -451,3 +451,4 @@
> >>  446    common  landlock_restrict_self          sys_landlock_restrict_self
> >>  # 447 reserved for memfd_secret
> >>  448    common  process_mrelease                sys_process_mrelease
> >> +449    common  futex_waitv                     sys_futex_waitv
> >
> > I don't know what's going on with this one, I don't actually see
> > a reason why it isn't already wired up on all architectures. If we add
> > this, it should probably be done for all architectures at once as a
> > bugfix, but it's possible that this is intentionally only used on
> > x86 and arm.
> >
> > André, can you comment on this?
> >
> I've added entries for the archs that I've actually tested, but there
> should not be any arch-specific problems in futex_waitv. I'll submit a
> patch to wire it up for the remaining architectures.

Ok, thank you.

       Arnd