From: Alex Dubov <oakad@yahoo.com>
To: Oleg Nesterov <oleg@tv-sign.ru>, "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Michal Piotrowski <michal.k.k.piotrowski@gmail.com>,
Pierre Ossman <drzeus@drzeus.cx>, Pavel Machek <pavel@ucw.cz>,
Gautham R Shenoy <ego@in.ibm.com>
Subject: Re: Freezeable workqueues [Was: 2.6.22-rc1: Broken suspend on SMP with tifm]
Date: Mon, 14 May 2007 17:56:15 -0700 (PDT) [thread overview]
Message-ID: <390169.9239.qm@web36708.mail.mud.yahoo.com> (raw)
In-Reply-To: <20070514214833.GA249@tv-sign.ru>
>
> > > - Do we need freezeable workqueues ?
> >
> > Well, we have at least one case in which they appear to be useful.
>
I need freezeable wq exactly for the fact that they are synchronized with suspend/resume. My
workitem may do device_register/unregister and it can (and will be) scheduled from irq handler
during resume. As far as I understand, before freezeable wqs, kthreads were the only way to
achieve this behavior, which is less convenient.
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next prev parent reply other threads:[~2007-05-15 0:56 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-13 19:32 2.6.22-rc1: Broken suspend on SMP with tifm Rafael J. Wysocki
2007-05-13 20:08 ` Oleg Nesterov
2007-05-13 20:30 ` Oleg Nesterov
2007-05-13 20:50 ` Rafael J. Wysocki
2007-05-13 20:50 ` Oleg Nesterov
2007-05-13 21:22 ` Rafael J. Wysocki
2007-05-13 21:34 ` Oleg Nesterov
2007-05-13 21:50 ` Rafael J. Wysocki
2007-05-13 21:54 ` Oleg Nesterov
2007-05-13 22:21 ` Rafael J. Wysocki
2007-05-13 22:32 ` Oleg Nesterov
2007-05-14 3:24 ` Alex Dubov
2007-05-14 5:57 ` Rafael J. Wysocki
2007-05-14 16:55 ` Freezeable workqueues [Was: 2.6.22-rc1: Broken suspend on SMP with tifm] Oleg Nesterov
2007-05-14 21:27 ` Rafael J. Wysocki
2007-05-14 21:48 ` Oleg Nesterov
2007-05-15 0:56 ` Alex Dubov [this message]
2007-05-15 20:54 ` Rafael J. Wysocki
2007-05-15 20:54 ` Rafael J. Wysocki
2007-05-20 19:54 ` Oleg Nesterov
2007-05-20 20:48 ` Rafael J. Wysocki
2007-05-20 21:06 ` Oleg Nesterov
2007-05-20 21:49 ` Rafael J. Wysocki
2007-05-13 20:33 ` 2.6.22-rc1: Broken suspend on SMP with tifm Rafael J. Wysocki
2007-05-13 21:52 ` [PATCH] for 2.6.22, make freezeable workqueues singlethread Oleg Nesterov
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