From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Gautham R Shenoy <ego@in.ibm.com>, Pavel Machek <pavel@ucw.cz>,
Oleg Nesterov <oleg@tv-sign.ru>,
Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Dipankar Sarma <dipankar@in.ibm.com>, Ingo Molnar <mingo@elte.hu>,
Srivatsa Vaddagiri <vatsa@in.ibm.com>,
Paul E McKenney <paulmck@us.ibm.com>
Subject: Re: [RFD] Freezing of kernel threads
Date: Sun, 13 May 2007 23:14:43 +0200 [thread overview]
Message-ID: <200705132314.44688.rjw@sisk.pl> (raw)
In-Reply-To: <alpine.LFD.0.98.0705131347550.6739@woody.linux-foundation.org>
On Sunday, 13 May 2007 22:49, Linus Torvalds wrote:
>
> On Sun, 13 May 2007, Rafael J. Wysocki wrote:
> >
> > Besides, the problems with interdependencies that we've had recently are
> > related specifically to the CPU hotplug. To be precise, they are related to the
> > CPU hotplug notifiers that try to stop kernel threads which may be frozen.
> > The other interdependencies don't lead to freezer-related problems.
>
> Sure they do. We've always had interdependencies and freezer-related
> problems. That's why PF_NOFREEZE exists in the first place.
Okay, we've already discussed that. I was referring to the recent problems
and I should have added "at present" to the last sentence. :-)
> Claiming this is somehow CPU hotplug-related is disingenious, since the
> freezer hasn't even been used for that historically, yet clearly we *do*
> have the NOFREEZE stuff.
>
> Those kernel threads tend to exists for a reason.
Agreed.
Greetings,
Rafael
next prev parent reply other threads:[~2007-05-13 21:09 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-12 18:17 [RFD] Freezing of kernel threads Rafael J. Wysocki
2007-05-12 18:25 ` Linus Torvalds
2007-05-12 21:14 ` Rafael J. Wysocki
2007-05-12 19:17 ` Pavel Machek
2007-05-12 19:40 ` Linus Torvalds
2007-05-12 22:14 ` Pavel Machek
2007-05-12 22:08 ` Rafael J. Wysocki
2007-05-12 19:36 ` Gautham R Shenoy
2007-05-12 19:57 ` Linus Torvalds
2007-05-12 20:11 ` Linus Torvalds
2007-05-13 8:33 ` Gautham R Shenoy
2007-05-13 16:33 ` Linus Torvalds
2007-05-13 20:08 ` Rafael J. Wysocki
2007-05-13 20:49 ` Linus Torvalds
2007-05-13 21:14 ` Rafael J. Wysocki [this message]
2007-05-14 6:18 ` Srivatsa Vaddagiri
2007-05-14 7:26 ` Gautham R Shenoy
2007-05-14 10:07 ` Rafael J. Wysocki
2007-05-14 7:41 ` Dipankar Sarma
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