From: Stephen Hemminger <shemminger@vyatta.com>
To: Ben Greear <greearb@candelatech.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
David <david@unsolicited.net>, Tejun Heo <tj@kernel.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
netdev@vger.kernel.org
Subject: Re: Linux 3.0 release
Date: Fri, 22 Jul 2011 13:32:20 -0700 [thread overview]
Message-ID: <20110722133220.0baf2199@nehalam.ftrdhcpuser.net> (raw)
In-Reply-To: <4E29D326.7070403@candelatech.com>
This a regression which probably began with
commit e22bee782b3b00bd4534ae9b1c5fb2e8e6573c5c
Author: Tejun Heo <tj@kernel.org>
Date: Tue Jun 29 10:07:14 2010 +0200
workqueue: implement concurrency managed dynamic worker pool
Before that it was perfectly legal for link watch code to
call schedule_delayed_work from IRQ. This should be allowable;
the code to manage the worker pool should handle it.
Network devices call netif_carrier_on/off from IRQ all the
time. The problem is that the new pool code breaks this
if link watch tries to schedule work before there enough worker
threads.
The workqueue code should have a fallback and not try and
do anything if being called from IRQ.
next prev parent reply other threads:[~2011-07-22 20:32 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-20 17:06 Major 2.6.38 regression ignored? Luke-Jr
[not found] ` <BANLkTimOqhNEsBEg6f=nMiMJqYGNyFJmeQ@mail.gmail.com>
2011-05-20 20:24 ` Rafael J. Wysocki
2011-05-20 21:11 ` Ray Lee
2011-05-21 8:41 ` Chris Wilson
2011-05-21 15:23 ` Luke-Jr
2011-05-21 15:40 ` Chris Wilson
2011-05-21 19:33 ` Luke-Jr
2011-05-28 13:19 ` Major 2.6.38 / 2.6.39 " Kirill Smelkov
2011-07-12 17:17 ` [Intel-gfx] " Kirill Smelkov
2011-07-12 18:07 ` Pekka Enberg
2011-07-22 2:59 ` Linux 3.0 release Linus Torvalds
2011-07-22 11:08 ` Major 2.6.38 / 2.6.39 / 3.0 regression ignored? Kirill Smelkov
2011-07-22 14:12 ` Herbert Xu
2011-07-22 18:00 ` Keith Packard
2011-07-22 20:23 ` Kirill Smelkov
2011-07-22 20:50 ` Keith Packard
2011-07-22 21:08 ` Kirill Smelkov
2011-07-22 21:31 ` [Intel-gfx] " Kirill Smelkov
2011-07-23 15:10 ` Alex Deucher
2011-07-23 18:19 ` Kirill Smelkov
2011-07-23 15:55 ` Pekka Enberg
2011-07-25 4:29 ` Keith Packard
2011-07-26 13:48 ` [Intel-gfx] " Kirill Smelkov
2011-08-09 12:08 ` Kirill Smelkov
2011-08-09 14:00 ` Vasily Khoruzhick
2011-08-09 14:47 ` Kirill Smelkov
2011-08-09 15:09 ` Vasily Khoruzhick
2011-08-09 15:34 ` Kirill Smelkov
2011-08-09 16:02 ` Vasily Khoruzhick
2011-08-09 16:32 ` Kirill Smelkov
2011-08-09 16:56 ` Ray Lee
2011-08-09 17:40 ` Kirill Smelkov
2011-08-09 17:43 ` Ray Lee
2011-08-10 8:36 ` Kirill Smelkov
2011-08-10 9:41 ` Alan Cox
2011-08-10 11:37 ` Kirill Smelkov
2011-07-22 12:52 ` Linux 3.0 release Martin Knoblauch
2011-07-22 19:11 ` David
2011-07-22 19:21 ` Linus Torvalds
2011-07-22 19:44 ` Ben Greear
2011-07-22 20:32 ` Stephen Hemminger [this message]
2011-07-22 20:35 ` Linus Torvalds
2011-07-23 2:27 ` Tejun Heo
2011-07-23 2:30 ` Tejun Heo
2011-07-22 21:26 ` Francois Romieu
2011-07-22 22:09 ` Stephen Hemminger
2011-07-22 22:53 ` [PATCH] net: allow netif_carrier to be called safely from IRQ Stephen Hemminger
2011-07-23 0:16 ` David Miller
2011-07-22 23:21 ` Linux 3.0 release - btrfs possible locking deadlock Ed Tomlinson
2011-07-25 19:49 ` Chris Mason
2011-07-26 0:22 ` Ed Tomlinson
2011-07-24 22:04 ` Linux 3.0 release Arnaud Lacombe
2011-07-25 2:21 ` Yoshinori Sato
2011-07-25 15:50 ` Arnaud Lacombe
2011-07-27 15:22 ` Yoshinori Sato
2011-07-27 17:29 ` Arnaud Lacombe
2011-07-28 2:08 ` Arnaud Lacombe
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