linux-kernel - Re: [PATCH] sched/numa: fix build without CONFIG_NUMA

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Message-ID: <1498682430.20270.124.camel@redhat.com>
Date:   Wed, 28 Jun 2017 16:40:30 -0400
From:   Rik van Riel <riel@...hat.com>
To:     Arnd Bergmann <arnd@...db.de>, Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     Vincent Guittot <vincent.guittot@...aro.org>,
        Morten Rasmussen <morten.rasmussen@....com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sched/numa: fix build without CONFIG_NUMA_BALANCING

On Wed, 2017-06-28 at 22:05 +0200, Arnd Bergmann wrote:
> I ran into a build error:
> 
> kernel/sched/fair.c:2655:44: error: 'struct sched_domain' declared
> inside parameter list will not be visible outside of this definition
> or declaration [-Werror]
> 
> Adding a forward declaration for the struct name is sufficient
> to avoid it.
> 
> Fixes: 3fed382b46ba ("sched/numa: Implement NUMA node level
> wake_affine()")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Peter pointed out another problem with that patch.

I am running a few tests now on a kernel with that
other bug fixed, which should also magically get
rid of this compiler warning.

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