From: Tejun Heo <tj@kernel.org>
To: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: linux1394-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] firewire: core: use non-reentrant workqueue where necessary
Date: Mon, 11 Oct 2010 15:29:34 +0200 [thread overview]
Message-ID: <4CB3113E.1060403@kernel.org> (raw)
In-Reply-To: <tkrat.06dc43b96f9ab9bf@s5r6.in-berlin.de>
Hello, Stefan.
On 10/10/2010 04:55 PM, Stefan Richter wrote:
...
> Therefore queue all of these types of work items on system_nrt_wq
> instead of system_wq. The former guarantees non-reentrance across all
> CPUs, the latter only on the CPU which schedules a work item.
>
> As a bonus, other subsystems which flush system_wq won't be held up if
> the firewire subsystem spends a lot of time in an extraordinarily long
> fw_device.work.
Awesome, thanks a lot for doing this. BTW, I'm in the process of
hunting down all flush_scheduled_work() users and plan to remove
workqueue flushing capability from all system workqueues.
> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
For the workqueue part,
Acked-by: Tejun Heo <tj@kernel.org>
--
tejun
next prev parent reply other threads:[~2010-10-11 13:29 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-10 14:55 [PATCH] firewire: core: use non-reentrant workqueue where necessary Stefan Richter
2010-10-10 14:57 ` [PATCH] firewire: sbp2: parallelize login/inquiry, reconnect, and shutdown Stefan Richter
2010-10-11 13:43 ` Tejun Heo
2010-10-11 21:27 ` Stefan Richter
2010-10-11 21:39 ` Stefan Richter
2010-10-12 13:55 ` Tejun Heo
2010-10-12 16:15 ` Stefan Richter
2010-10-12 16:46 ` Tejun Heo
2010-10-12 13:50 ` Tejun Heo
2010-10-12 21:39 ` [PATCH unfinished update] " Stefan Richter
2010-10-12 22:25 ` Stefan Richter
2010-10-12 23:09 ` Stefan Richter
2010-10-13 9:45 ` Tejun Heo
2010-10-11 13:29 ` Tejun Heo [this message]
2010-10-11 19:05 ` [PATCH] firewire: core: use non-reentrant workqueue where necessary Stefan Richter
2010-10-12 21:29 ` [PATCH update] firewire: core: use non-reentrant workqueue with rescuer Stefan Richter
2010-10-13 9:47 ` Tejun Heo
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