From mboxrd@z Thu Jan  1 00:00:00 1970
Content-Type: multipart/mixed; boundary="===============3502827200347327178=="
MIME-Version: 1.0
From: Oleg Nesterov <oleg@redhat.com>
To: lkp@lists.01.org
Subject: Re: [locking/percpu] 1916a96ef1: INFO: task systemd:1 blocked for more than 300 seconds.
Date: Tue, 19 Jul 2016 15:31:47 +0200
Message-ID: <20160719133146.GA6410@redhat.com>
In-Reply-To: <20160719021607.GB13203@yexl-desktop>
List-Id: <oe-lkp.lists.linux.dev>

--===============3502827200347327178==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable

On 07/19, kernel test robot wrote:
>
> https://github.com/0day-ci/linux Peter-Zijlstra/locking-percpu-rwsem-Opti=
mize-readers-and-reduce-global-impact/20160715-142422
> commit 1916a96ef19d77b4ff2f83711bb4233dc4d81dbf ("locking/percpu-rwsem: I=
ntroduce bias knob")

Yes, gp_state =3D=3D !GP_IDLE in sabotage was not right, this will be fixed.

Oleg.


--===============3502827200347327178==--


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 S1753495AbcGSNbe (ORCPT <rfc822;w@1wt.eu>);
	Tue, 19 Jul 2016 09:31:34 -0400
Received: from mx1.redhat.com ([209.132.183.28]:38365 "EHLO mx1.redhat.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1752810AbcGSNbd (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
	Tue, 19 Jul 2016 09:31:33 -0400
Date: Tue, 19 Jul 2016 15:31:47 +0200
From: Oleg Nesterov <oleg@redhat.com>
To: kernel test robot <xiaolong.ye@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>, 0day robot <fengguang.wu@intel.com>,
        Tejun Heo <tj@kernel.org>, Paul McKenney <paulmck@linux.vnet.ibm.com>,
        John Stultz <john.stultz@linaro.org>,
        Dmitry Shmidt <dimitrysh@google.com>,
        LKML <linux-kernel@vger.kernel.org>, lkp@01.org
Subject: Re: [lkp] [locking/percpu]  1916a96ef1: INFO: task systemd:1
	blocked for more than 300 seconds.
Message-ID: <20160719133146.GA6410@redhat.com>
References: <20160719021607.GB13203@yexl-desktop>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20160719021607.GB13203@yexl-desktop>
User-Agent: Mutt/1.5.18 (2008-05-17)
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Tue, 19 Jul 2016 13:31:32 +0000 (UTC)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On 07/19, kernel test robot wrote:
>
> https://github.com/0day-ci/linux Peter-Zijlstra/locking-percpu-rwsem-Optimize-readers-and-reduce-global-impact/20160715-142422
> commit 1916a96ef19d77b4ff2f83711bb4233dc4d81dbf ("locking/percpu-rwsem: Introduce bias knob")

Yes, gp_state == !GP_IDLE in sabotage was not right, this will be fixed.

Oleg.