From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Fengguang Wu <fengguang.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org,
joshhunt00-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org,
rni-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
vwadekar-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org,
herbert-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org,
davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org,
linux-crypto-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
swhiteho-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
bpm-sJ/iWh9BUns@public.gmane.org,
elder-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
xfs-VZNHf3L845pBDgjK7y7TUQ@public.gmane.org,
marcel-kz+m5ild9QBg9hUCZPvPmw@public.gmane.org,
gustavo-THi1TnShQwVAfugRpC6u6w@public.gmane.org,
johan.hedberg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
linux-bluetooth-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
martin.petersen-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org
Subject: Re: [PATCH 6/6] workqueue: reimplement WQ_HIGHPRI using a separate worker_pool
Date: Thu, 12 Jul 2012 10:05:19 -0700 [thread overview]
Message-ID: <20120712170519.GA20167@google.com> (raw)
In-Reply-To: <20120712130648.GA19214@localhost>
Hello, Fengguang.
On Thu, Jul 12, 2012 at 09:06:48PM +0800, Fengguang Wu wrote:
> [ 0.207977] WARNING: at /c/kernel-tests/mm/kernel/workqueue.c:1217 worker_enter_idle+0x2b8/0x32b()
> [ 0.207977] Modules linked in:
> [ 0.207977] Pid: 1, comm: swapper/0 Not tainted 3.5.0-rc6-08414-g9645fff #15
> [ 0.207977] Call Trace:
> [ 0.207977] [<ffffffff81087189>] ? worker_enter_idle+0x2b8/0x32b
> [ 0.207977] [<ffffffff810559d9>] warn_slowpath_common+0xae/0xdb
> [ 0.207977] [<ffffffff81055a2e>] warn_slowpath_null+0x28/0x31
> [ 0.207977] [<ffffffff81087189>] worker_enter_idle+0x2b8/0x32b
> [ 0.207977] [<ffffffff81087222>] start_worker+0x26/0x42
> [ 0.207977] [<ffffffff81c8b261>] init_workqueues+0x2d2/0x59a
> [ 0.207977] [<ffffffff81c8af8f>] ? usermodehelper_init+0x8a/0x8a
> [ 0.207977] [<ffffffff81000284>] do_one_initcall+0xce/0x272
> [ 0.207977] [<ffffffff81c6f650>] kernel_init+0x12e/0x3c1
> [ 0.207977] [<ffffffff814b9b74>] kernel_thread_helper+0x4/0x10
> [ 0.207977] [<ffffffff814b80b0>] ? retint_restore_args+0x13/0x13
> [ 0.207977] [<ffffffff81c6f522>] ? start_kernel+0x737/0x737
> [ 0.207977] [<ffffffff814b9b70>] ? gs_change+0x13/0x13
Yeah, I forgot to flip the WARN_ON_ONCE() condition so that it checks
nr_running before looking at pool->nr_running. The warning is
spurious. Will post fix soon.
Thanks.
--
tejun
WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj@kernel.org>
To: Fengguang Wu <fengguang.wu@intel.com>
Cc: axboe@kernel.dk, elder@kernel.org, rni@google.com,
martin.petersen@oracle.com, linux-bluetooth@vger.kernel.org,
torvalds@linux-foundation.org, marcel@holtmann.org,
linux-kernel@vger.kernel.org, vwadekar@nvidia.com,
swhiteho@redhat.com, herbert@gondor.hengli.com.au, bpm@sgi.com,
linux-crypto@vger.kernel.org, gustavo@padovan.org,
xfs@oss.sgi.com, joshhunt00@gmail.com, davem@davemloft.net,
vgoyal@redhat.com, johan.hedberg@gmail.com
Subject: Re: [PATCH 6/6] workqueue: reimplement WQ_HIGHPRI using a separate worker_pool
Date: Thu, 12 Jul 2012 10:05:19 -0700 [thread overview]
Message-ID: <20120712170519.GA20167@google.com> (raw)
In-Reply-To: <20120712130648.GA19214@localhost>
Hello, Fengguang.
On Thu, Jul 12, 2012 at 09:06:48PM +0800, Fengguang Wu wrote:
> [ 0.207977] WARNING: at /c/kernel-tests/mm/kernel/workqueue.c:1217 worker_enter_idle+0x2b8/0x32b()
> [ 0.207977] Modules linked in:
> [ 0.207977] Pid: 1, comm: swapper/0 Not tainted 3.5.0-rc6-08414-g9645fff #15
> [ 0.207977] Call Trace:
> [ 0.207977] [<ffffffff81087189>] ? worker_enter_idle+0x2b8/0x32b
> [ 0.207977] [<ffffffff810559d9>] warn_slowpath_common+0xae/0xdb
> [ 0.207977] [<ffffffff81055a2e>] warn_slowpath_null+0x28/0x31
> [ 0.207977] [<ffffffff81087189>] worker_enter_idle+0x2b8/0x32b
> [ 0.207977] [<ffffffff81087222>] start_worker+0x26/0x42
> [ 0.207977] [<ffffffff81c8b261>] init_workqueues+0x2d2/0x59a
> [ 0.207977] [<ffffffff81c8af8f>] ? usermodehelper_init+0x8a/0x8a
> [ 0.207977] [<ffffffff81000284>] do_one_initcall+0xce/0x272
> [ 0.207977] [<ffffffff81c6f650>] kernel_init+0x12e/0x3c1
> [ 0.207977] [<ffffffff814b9b74>] kernel_thread_helper+0x4/0x10
> [ 0.207977] [<ffffffff814b80b0>] ? retint_restore_args+0x13/0x13
> [ 0.207977] [<ffffffff81c6f522>] ? start_kernel+0x737/0x737
> [ 0.207977] [<ffffffff814b9b70>] ? gs_change+0x13/0x13
Yeah, I forgot to flip the WARN_ON_ONCE() condition so that it checks
nr_running before looking at pool->nr_running. The warning is
spurious. Will post fix soon.
Thanks.
--
tejun
_______________________________________________
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WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj@kernel.org>
To: Fengguang Wu <fengguang.wu@intel.com>
Cc: linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
joshhunt00@gmail.com, axboe@kernel.dk, rni@google.com,
vgoyal@redhat.com, vwadekar@nvidia.com,
herbert@gondor.hengli.com.au, davem@davemloft.net,
linux-crypto@vger.kernel.org, swhiteho@redhat.com, bpm@sgi.com,
elder@kernel.org, xfs@oss.sgi.com, marcel@holtmann.org,
gustavo@padovan.org, johan.hedberg@gmail.com,
linux-bluetooth@vger.kernel.org, martin.petersen@oracle.com
Subject: Re: [PATCH 6/6] workqueue: reimplement WQ_HIGHPRI using a separate worker_pool
Date: Thu, 12 Jul 2012 10:05:19 -0700 [thread overview]
Message-ID: <20120712170519.GA20167@google.com> (raw)
In-Reply-To: <20120712130648.GA19214@localhost>
Hello, Fengguang.
On Thu, Jul 12, 2012 at 09:06:48PM +0800, Fengguang Wu wrote:
> [ 0.207977] WARNING: at /c/kernel-tests/mm/kernel/workqueue.c:1217 worker_enter_idle+0x2b8/0x32b()
> [ 0.207977] Modules linked in:
> [ 0.207977] Pid: 1, comm: swapper/0 Not tainted 3.5.0-rc6-08414-g9645fff #15
> [ 0.207977] Call Trace:
> [ 0.207977] [<ffffffff81087189>] ? worker_enter_idle+0x2b8/0x32b
> [ 0.207977] [<ffffffff810559d9>] warn_slowpath_common+0xae/0xdb
> [ 0.207977] [<ffffffff81055a2e>] warn_slowpath_null+0x28/0x31
> [ 0.207977] [<ffffffff81087189>] worker_enter_idle+0x2b8/0x32b
> [ 0.207977] [<ffffffff81087222>] start_worker+0x26/0x42
> [ 0.207977] [<ffffffff81c8b261>] init_workqueues+0x2d2/0x59a
> [ 0.207977] [<ffffffff81c8af8f>] ? usermodehelper_init+0x8a/0x8a
> [ 0.207977] [<ffffffff81000284>] do_one_initcall+0xce/0x272
> [ 0.207977] [<ffffffff81c6f650>] kernel_init+0x12e/0x3c1
> [ 0.207977] [<ffffffff814b9b74>] kernel_thread_helper+0x4/0x10
> [ 0.207977] [<ffffffff814b80b0>] ? retint_restore_args+0x13/0x13
> [ 0.207977] [<ffffffff81c6f522>] ? start_kernel+0x737/0x737
> [ 0.207977] [<ffffffff814b9b70>] ? gs_change+0x13/0x13
Yeah, I forgot to flip the WARN_ON_ONCE() condition so that it checks
nr_running before looking at pool->nr_running. The warning is
spurious. Will post fix soon.
Thanks.
--
tejun
next prev parent reply other threads:[~2012-07-12 17:05 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-09 18:41 [PATCHSET] workqueue: reimplement high priority using a separate worker pool Tejun Heo
2012-07-09 18:41 ` Tejun Heo
[not found] ` <1341859315-17759-1-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-07-09 18:41 ` [PATCH 1/6] workqueue: don't use WQ_HIGHPRI for unbound workqueues Tejun Heo
2012-07-09 18:41 ` Tejun Heo
2012-07-09 18:41 ` Tejun Heo
2012-07-09 18:41 ` [PATCH 2/6] workqueue: factor out worker_pool from global_cwq Tejun Heo
2012-07-09 18:41 ` Tejun Heo
2012-07-09 18:41 ` Tejun Heo
2012-07-10 4:48 ` Namhyung Kim
2012-07-10 4:48 ` Namhyung Kim
2012-07-10 4:48 ` Namhyung Kim
2012-07-12 17:07 ` Tejun Heo
2012-07-12 17:07 ` Tejun Heo
2012-07-12 17:07 ` Tejun Heo
[not found] ` <1341859315-17759-3-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-07-12 21:49 ` [PATCH UPDATED " Tejun Heo
2012-07-12 21:49 ` Tejun Heo
2012-07-12 21:49 ` Tejun Heo
2012-07-09 18:41 ` [PATCH 3/6] workqueue: use @pool instead of @gcwq or @cpu where applicable Tejun Heo
2012-07-09 18:41 ` Tejun Heo
2012-07-09 18:41 ` Tejun Heo
[not found] ` <1341859315-17759-4-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-07-10 23:30 ` Tony Luck
2012-07-10 23:30 ` Tony Luck
2012-07-10 23:30 ` Tony Luck
2012-07-12 17:06 ` Tejun Heo
2012-07-12 17:06 ` Tejun Heo
2012-07-12 17:06 ` Tejun Heo
2012-07-09 18:41 ` [PATCH 4/6] workqueue: separate out worker_pool flags Tejun Heo
2012-07-09 18:41 ` Tejun Heo
2012-07-09 18:41 ` Tejun Heo
2012-07-09 18:41 ` [PATCH 5/6] workqueue: introduce NR_WORKER_POOLS and for_each_worker_pool() Tejun Heo
2012-07-09 18:41 ` Tejun Heo
2012-07-09 18:41 ` Tejun Heo
2012-07-14 3:55 ` Tejun Heo
2012-07-14 3:55 ` Tejun Heo
2012-07-14 3:55 ` Tejun Heo
2012-07-14 4:27 ` Linus Torvalds
2012-07-14 4:27 ` Linus Torvalds
2012-07-14 4:27 ` Linus Torvalds
[not found] ` <CA+55aFyeauqCqrWsx4U2TB2ENrugZXYj+4vw3Fd0kGaeWBP3RA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-14 4:44 ` Tejun Heo
2012-07-14 4:44 ` Tejun Heo
2012-07-14 4:44 ` Tejun Heo
2012-07-14 5:00 ` Linus Torvalds
2012-07-14 5:00 ` Linus Torvalds
2012-07-14 5:00 ` Linus Torvalds
2012-07-14 5:07 ` Tejun Heo
2012-07-14 5:07 ` Tejun Heo
2012-07-14 5:07 ` Tejun Heo
2012-07-16 19:31 ` Peter Seebach
[not found] ` <1341859315-17759-6-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-07-14 5:21 ` [PATCH UPDATED " Tejun Heo
2012-07-14 5:21 ` Tejun Heo
2012-07-14 5:21 ` Tejun Heo
2012-07-09 18:41 ` [PATCH 6/6] workqueue: reimplement WQ_HIGHPRI using a separate worker_pool Tejun Heo
2012-07-09 18:41 ` Tejun Heo
2012-07-09 18:41 ` Tejun Heo
[not found] ` <1341859315-17759-7-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2012-07-12 13:06 ` Fengguang Wu
2012-07-12 13:06 ` Fengguang Wu
2012-07-12 13:06 ` Fengguang Wu
2012-07-12 17:05 ` Tejun Heo [this message]
2012-07-12 17:05 ` Tejun Heo
2012-07-12 17:05 ` Tejun Heo
2012-07-12 21:45 ` Tejun Heo
2012-07-12 21:45 ` Tejun Heo
2012-07-12 21:45 ` Tejun Heo
2012-07-12 22:16 ` Tony Luck
2012-07-12 22:16 ` Tony Luck
2012-07-12 22:16 ` Tony Luck
2012-07-12 22:32 ` Tejun Heo
2012-07-12 22:32 ` Tejun Heo
2012-07-12 22:32 ` Tejun Heo
2012-07-12 23:24 ` Tony Luck
2012-07-12 23:24 ` Tony Luck
2012-07-12 23:24 ` Tony Luck
2012-07-12 23:36 ` Tejun Heo
2012-07-12 23:36 ` Tejun Heo
2012-07-12 23:36 ` Tejun Heo
2012-07-12 23:46 ` Tony Luck
2012-07-12 23:46 ` Tony Luck
2012-07-12 23:46 ` Tony Luck
2012-07-13 17:51 ` Tony Luck
2012-07-13 17:51 ` Tony Luck
2012-07-13 17:51 ` Tony Luck
2012-07-13 2:08 ` Fengguang Wu
2012-07-13 2:08 ` Fengguang Wu
2012-07-13 2:08 ` Fengguang Wu
2012-07-14 3:41 ` Tejun Heo
2012-07-14 3:41 ` Tejun Heo
2012-07-14 3:41 ` Tejun Heo
2012-07-14 3:56 ` [PATCH UPDATED " Tejun Heo
2012-07-14 3:56 ` Tejun Heo
2012-07-14 3:56 ` Tejun Heo
2012-07-14 8:18 ` Fengguang Wu
2012-07-14 8:18 ` Fengguang Wu
2012-07-14 8:18 ` Fengguang Wu
2012-07-14 5:24 ` [PATCH UPDATED v3 " Tejun Heo
2012-07-14 5:24 ` Tejun Heo
2012-07-14 5:24 ` Tejun Heo
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