From: Tejun Heo <tj@kernel.org>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: "Colin Cross" <ccross@android.com>,
"Linux PM list" <linux-pm@vger.kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
"Arve Hjønnevåg" <arve@android.com>,
"Oleg Nesterov" <oleg@redhat.com>,
"Len Brown" <len.brown@intel.com>, "Pavel Machek" <pavel@ucw.cz>,
"Jeff Layton" <jlayton@redhat.com>,
"Mandeep Baines" <msb@chromium.org>
Subject: Re: [PATCH v2 03/10] freezer: add new freezable helpers using freezer_do_not_count()
Date: Fri, 3 May 2013 09:54:48 -0700 [thread overview]
Message-ID: <20130503165448.GA22709@mtj.dyndns.org> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1305031017030.1513-100000@iolanthe.rowland.org>
On Fri, May 03, 2013 at 10:18:17AM -0400, Alan Stern wrote:
> Don't forget about freezable kernel threads. They never cross the
> kernel/user boundary.
Doesn't really matter for this purpose. They first of all can't be
moved into !root cgroups and thus can't be cgroup-frozen and even if
they could they can't be killed or ptraced, so they just don't play
the same game.
Thanks.
--
tejun
next prev parent reply other threads:[~2013-05-03 16:54 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-02 1:34 [PATCH v2 00/10] optimize freezing tasks by reducing task wakeups Colin Cross
2013-05-02 1:34 ` [PATCH v2 01/10] freezer: shorten freezer sleep time using exponential backoff Colin Cross
2013-05-02 23:20 ` Tejun Heo
2013-05-02 1:35 ` [PATCH v2 02/10] freezer: skip waking up tasks with PF_FREEZER_SKIP set Colin Cross
2013-05-02 23:24 ` Tejun Heo
2013-05-03 9:24 ` Pavel Machek
2013-05-02 1:35 ` [PATCH v2 03/10] freezer: add new freezable helpers using freezer_do_not_count() Colin Cross
2013-05-02 23:55 ` Tejun Heo
2013-05-03 0:03 ` Tejun Heo
2013-05-03 2:16 ` Colin Cross
2013-05-03 2:41 ` Colin Cross
2013-05-03 4:09 ` Tejun Heo
2013-05-03 4:12 ` Tejun Heo
2013-05-03 4:17 ` Colin Cross
2013-05-03 4:20 ` Tejun Heo
2013-05-03 14:18 ` Alan Stern
2013-05-03 16:54 ` Tejun Heo [this message]
2013-05-02 1:35 ` [PATCH v2 04/10] binder: use freezable blocking calls Colin Cross
2013-05-02 1:35 ` [PATCH v2 05/10] epoll: use freezable blocking call Colin Cross
2013-05-02 1:35 ` [PATCH v2 06/10] select: " Colin Cross
2013-05-02 1:35 ` [PATCH v2 07/10] futex: " Colin Cross
2013-05-02 19:45 ` Thomas Gleixner
2013-05-03 3:12 ` Darren Hart
2013-06-25 21:15 ` [tip:core/locking] futex: Use " tip-bot for Colin Cross
2013-05-02 1:35 ` [PATCH v2 08/10] nanosleep: use " Colin Cross
2013-05-02 19:46 ` Thomas Gleixner
2013-05-02 1:35 ` [PATCH v2 09/10] sigtimedwait: " Colin Cross
2013-05-02 1:35 ` [PATCH v2 10/10] af_unix: use freezable blocking calls in read Colin Cross
2013-05-03 0:08 ` Tejun Heo
2013-05-04 19:19 ` Rafael J. Wysocki
2013-05-04 20:39 ` Tejun Heo
2013-05-04 22:23 ` Colin Cross
2013-05-05 11:23 ` Rafael J. Wysocki
2013-05-02 21:06 ` [PATCH v2 00/10] optimize freezing tasks by reducing task wakeups Rafael J. Wysocki
2013-05-03 0:10 ` Tejun Heo
2013-05-03 11:43 ` Rafael J. Wysocki
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