linux-kernel - Re: [x86-tip] strange nr

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Date:   Tue, 27 Sep 2016 05:13:37 +0200
From:   Mike Galbraith <umgwanakikbuti@...il.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>,
        Borislav Petkov <bp@...en8.de>,
        Dou Liyang <douly.fnst@...fujitsu.com>
Subject: Re: [x86-tip] strange nr_cpus= boot regression

On Mon, 2016-09-26 at 15:35 -0400, Thomas Gleixner wrote:
> On Mon, 26 Sep 2016, Thomas Gleixner wrote:
> > Can you please provide your .config and the dmesg of a bad and a good run?
> 
> Don't bother. I found it.
> 
> It's a merge artifact. So git bisect pointing at the merge commit is
> entirely correct.
> 
> mainline moves 
> 
> 	>  num_processors++;
> 
> to a different place in the function. See commit c291b0151585.
> 
> Now the nodeid patch set in x86/apic does not have this commit and so
> f7c28833c2520 removes  num_processors++ from the original location before
> c291b0151585.

Whew, no mythical creature infestation.  Thanks, next encounter with
such an artifact should provide markedly less entertainment.

	-Mike