linux-kernel - Re: tip.today - scheduler bam boom crash (cpu hotplug)

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Date:   Thu, 19 Jan 2017 18:20:35 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     Mike Galbraith <efault@....de>,
        LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>
Subject: Re: tip.today - scheduler  bam boom crash (cpu hotplug)

On Thu, Jan 19, 2017 at 05:54:55PM +0100, Ingo Molnar wrote:
> 
> * Peter Zijlstra <peterz@...radead.org> wrote:
> 
> > On Thu, Jan 19, 2017 at 11:19:24AM +0100, Peter Zijlstra wrote:
> > 
> > > I'll go have a prod. Thanks!
> > 
> > This seems to cure it for me.
> > 
> > ---
> > Subject: sched/clock: Fix hotplug issue
> 
> JFYI:
> 
>  arch/x86/kernel/cpu/centaur.c: In function ‘early_init_centaur’:
>  arch/x86/kernel/cpu/centaur.c:108:2: error: implicit declaration of function ‘clear_sched_clock_stable’ [-Werror=implicit-function-declaration]
> 
> x86-64 defconfig-ish.

Duh.. that'd be a missing: #include <linux/sched.h>

Clearly that's not selected with the .config for the textbox ;-)