From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1753568AbcLGS4i (ORCPT <rfc822;w@1wt.eu>);
        Wed, 7 Dec 2016 13:56:38 -0500
Received: from mail-wm0-f67.google.com ([74.125.82.67]:34169 "EHLO
        mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1752635AbcLGS4g (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Wed, 7 Dec 2016 13:56:36 -0500
Date: Wed, 7 Dec 2016 19:56:32 +0100
From: Ingo Molnar <mingo@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>, Stephen Rothwell <sfr@canb.auug.org.au>,
        Arnaldo Carvalho de Melo <acme@infradead.org>,
        Peter Foley <pefoley2@pefoley.com>, Wang Nan <wangnan0@huawei.com>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Peter Zijlstra <peterz@infradead.org>, linux-next@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: linux-next: build failure after merge of the tip tree
Message-ID: <20161207185632.GA24040@gmail.com>
References: <20161207123711.795d97bb@canb.auug.org.au>
 <20161207074514.GA10616@gmail.com>
 <20161207081215.GA13808@krava>
 <20161207144935.GH8257@kernel.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20161207144935.GH8257@kernel.org>
User-Agent: Mutt/1.5.24 (2015-08-30)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org


* Arnaldo Carvalho de Melo <acme@kernel.org> wrote:

> Em Wed, Dec 07, 2016 at 09:12:15AM +0100, Jiri Olsa escreveu:
> > On Wed, Dec 07, 2016 at 08:45:14AM +0100, Ingo Molnar wrote:
> > 
> > SNIP
> > 
> > > * Stephen Rothwell <sfr@canb.auug.org.au> wrote:
> > > 
> > > > Hi all,
> > > > 
> > > > After merging the tip tree, today's linux-next build (powerpc64le perf)
> > > > failed like this:
> > > > 
> > > >   LINK     /home/sfr/next/perf/fixdep
> > > > /bin/sh: 1: /home/sfr/next/perf//fixdep: Permission denied
> > > > tools/build/Makefile.build:91: recipe for target '/home/sfr/next/perf/pmu-events/jevents.o' failed
> > > > 
> > > > $ ls -l /home/sfr/next/perf/fixdep
> > > > -rwxr-xr-x 1 sfr users 71104 Dec  7 12:26 /home/sfr/next/perf/fixdep
> > > > 
> > > > I am not sure what caused this, but redoing the build succeeded, so I
> > > > have just filed this report and left it for today.
> > 
> > this seems to be the rare race issue caused by missing fixdep dependency,
> > caused probably by recompiling of fixdep because of its change in the merge
> > 
> > Arnaldo already carries a fix for this in his latest perf/core, where
> > we moved the fixdep compilation on top of everything to kill any future
> > race due to missing fixdep dependency
> 
> I'll push it today, will stop processing other stuff now and prepare a
> pull request,

Thanks - I pushed the fixes towards linux-next, so tomorrow's (today's) linux-next 
build should not trigger this build race.

Thanks,

	Ingo