linux-kernel - Re: [tip: locking/core] futex: Split out requeue

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Date:   Fri, 15 Oct 2021 12:01:15 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Mike Galbraith <efault@....de>
Cc:     linux-kernel@...r.kernel.org, linux-tip-commits@...r.kernel.org,
        andrealmeid@...labora.com, x86@...nel.org
Subject: Re: [tip: locking/core] futex: Split out requeue

On Wed, Oct 13, 2021 at 06:57:15PM +0200, Mike Galbraith wrote:
> On Sat, 2021-10-09 at 10:07 +0000, tip-bot2 for Peter Zijlstra wrote:
> >
> > diff --git a/kernel/futex/futex.h b/kernel/futex/futex.h
> > index 4969e96..840302a 100644
> > --- a/kernel/futex/futex.h
> > +++ b/kernel/futex/futex.h
> > @@ -3,6 +3,8 @@
> >  #define _FUTEX_H
> >  
> >  #include <linux/futex.h>
> > +#include <linux/sched/wake_q.h>
> 
> +#ifdef CONFIG_PREEMPT_RT
> +#include <linux/rcuwait.h>
> +#endif
> 
> ?
> 
> I needed that for tip-rt to build. It also boots, and futextests are
> happy (whew, futexes hard).

Hmm indeed, I wonder how that happened... anyway, lemme add a patch to
cure that.