linux-kernel - Re: [patch V2 25/29] lockup_detector: Implement init time detection of perf

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Date:   Wed, 13 Sep 2017 20:05:18 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Don Zickus <dzickus@...hat.com>
cc:     LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...en8.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Sebastian Siewior <bigeasy@...utronix.de>,
        Nicholas Piggin <npiggin@...il.com>,
        Chris Metcalf <cmetcalf@...lanox.com>,
        Ulrich Obergfell <uobergfe@...hat.com>
Subject: Re: [patch V2 25/29] lockup_detector: Implement init time detection
 of perf

On Wed, 13 Sep 2017, Don Zickus wrote:
> > +/* Return 0, if a NMI watchdog is available. Error code otherwise */
> > +int __weak __init void watchdog_nmi_probe(void)
> 
> ^^^ compile error, can't have 'int' and 'void'.  Removing 'void' fixes it.

Yes, I know. I feel stupid because I'm 100% sure that I compiled it ....