From: Ingo Molnar <mingo@elte.hu>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Bill Huey <billh@gnuppy.monkey.org>,
linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
John Stultz <johnstul@us.ibm.com>,
"Paul E. McKenney" <paulmck@us.ibm.com>,
Dipankar Sarma <dipankar@in.ibm.com>,
Arjan van de Ven <arjan@infradead.org>
Subject: Re: [PATCH] move put_task_struct() reaping into a thread [Re: 2.6.18-rt1]
Date: Wed, 27 Sep 2006 16:06:59 +0200 [thread overview]
Message-ID: <20060927140659.GA31025@elte.hu> (raw)
In-Reply-To: <m1lko5o1eo.fsf@ebiederm.dsl.xmission.com>
* Eric W. Biederman <ebiederm@xmission.com> wrote:
> I'm still wondering if we can move put_task_struct a little lower in
> the logic in the places where it is called, so it isn't called under a
> lock, or with preemption disabled. The only downside I see is that it
> might convolute the logic into unreadability.
well it's all a function of the task reaping logic: right now we in
essence complete the reaping from the scheduler, via prev_state ==
TASK_DEAD. We cannot do it sooner because the task is still in use. I
had one other implementation upstream some time ago, which was a
single-slot cache for reaped tasks - but that uglified other codepaths
because _something_ has to notice that the task has been unscheduled.
Ingo
next prev parent reply other threads:[~2006-09-27 14:15 UTC|newest]
Thread overview: 101+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-20 14:19 2.6.18-rt1 Ingo Molnar
2006-09-20 16:50 ` 2.6.18-rt1 Gene Heskett
2006-09-20 16:58 ` 2.6.18-rt1 Ingo Molnar
2006-09-20 17:33 ` 2.6.18-rt1 Gene Heskett
2006-09-20 18:34 ` 2.6.18-rt1 Gene Heskett
2006-09-20 17:00 ` 2.6.18-rt1 Daniel Walker
2006-09-20 17:38 ` 2.6.18-rt1 Paul E. McKenney
2006-09-20 17:41 ` 2.6.18-rt1 Daniel Walker
2006-09-20 18:23 ` 2.6.18-rt1 Gene Heskett
2006-09-20 18:25 ` 2.6.18-rt1 Paul E. McKenney
2006-09-20 18:34 ` 2.6.18-rt1 Daniel Walker
2006-09-20 20:06 ` 2.6.18-rt1 Paul E. McKenney
2006-09-20 21:38 ` 2.6.18-rt1 Gene Heskett
2006-09-20 20:17 ` 2.6.18-rt1 Gene Heskett
2006-09-20 18:36 ` 2.6.18-rt1 Gene Heskett
2006-09-20 18:47 ` 2.6.18-rt1 Thomas Gleixner
2006-09-20 19:20 ` 2.6.18-rt1 Thomas Gleixner
2006-09-20 19:46 ` 2.6.18-rt1 Ingo Molnar
2006-09-20 20:19 ` 2.6.18-rt1 Daniel Walker
2006-09-20 20:14 ` 2.6.18-rt1 Ingo Molnar
2006-09-20 20:31 ` 2.6.18-rt1 Daniel Walker
2006-09-21 19:02 ` 2.6.18-rt1 Ingo Molnar
2006-09-21 19:18 ` 2.6.18-rt1 Daniel Walker
2006-09-22 14:42 ` 2.6.18-rt1 Daniel Walker
2006-09-27 8:36 ` 2.6.18-rt1 Ingo Molnar
2006-09-21 8:04 ` 2.6.18-rt1 Deepak Saxena
2006-09-21 8:04 ` 2.6.18-rt1 Ingo Molnar
2006-09-21 8:24 ` 2.6.18-rt1 Deepak Saxena
2006-09-22 2:19 ` 2.6.18-rt1 john cooper
2006-09-22 6:36 ` 2.6.18-rt1 Lennert Buytenhek
2006-09-22 11:56 ` 2.6.18-rt1 Ingo Molnar
2006-09-27 13:10 ` 2.6.18-rt4 john cooper
2006-09-27 13:09 ` 2.6.18-rt4 Ingo Molnar
2006-09-20 18:56 ` 2.6.18-rt1 K.R. Foley
2006-09-20 19:49 ` 2.6.18-rt1 Ingo Molnar
2006-09-20 20:33 ` 2.6.18-rt1 K.R. Foley
2006-09-20 20:41 ` 2.6.18-rt1 Thomas Gleixner
2006-09-20 20:50 ` 2.6.18-rt1 K.R. Foley
2006-09-21 19:16 ` 2.6.18-rt1 john stultz
2006-09-22 2:18 ` 2.6.18-rt1 K.R. Foley
2006-09-22 11:58 ` 2.6.18-rt1 Ingo Molnar
2006-09-28 0:42 ` 2.6.18-rt1 john stultz
2006-09-28 22:48 ` 2.6.18-rt1 john stultz
2006-09-29 2:09 ` 2.6.18-rt1 K.R. Foley
2006-09-29 12:24 ` 2.6.18-rt1 Ingo Molnar
2006-09-29 12:40 ` 2.6.18-rt1 Ingo Molnar
2006-09-20 19:58 ` 2.6.18-rt1 Thomas Gleixner
2006-09-20 20:34 ` 2.6.18-rt1 K.R. Foley
2006-09-20 19:38 ` 2.6.18-rt1 Mark Knecht
2006-09-20 20:27 ` 2.6.18-rt1 Mark Knecht
2006-09-22 14:14 ` 2.6.18-rt1 Lee Revell
2006-09-20 20:54 ` 2.6.18-rt1 Michal Piotrowski
2006-09-20 22:07 ` 2.6.18-rt1 Michal Piotrowski
2006-09-20 22:26 ` 2.6.18-rt1 Michal Piotrowski
2006-09-21 6:56 ` [PATCH] move put_task_struct() reaping into a thread [Re: 2.6.18-rt1] Bill Huey
2006-09-21 6:54 ` Ingo Molnar
2006-09-21 7:18 ` Bill Huey
2006-09-21 7:16 ` Ingo Molnar
2006-09-21 7:32 ` Bill Huey
2006-09-21 7:29 ` Ingo Molnar
2006-09-21 7:48 ` Bill Huey
2006-09-21 7:56 ` Ingo Molnar
2006-09-21 8:13 ` Bill Huey
2006-09-21 12:23 ` Esben Nielsen
2006-09-21 12:56 ` Ingo Molnar
2006-09-21 7:27 ` Bill Huey
2006-09-21 7:22 ` Ingo Molnar
2006-09-21 7:35 ` Bill Huey
2006-09-21 7:31 ` Ingo Molnar
2006-09-21 7:52 ` Bill Huey
2006-09-27 2:55 ` Eric W. Biederman
2006-09-27 5:08 ` Bill Huey
2006-09-27 6:02 ` Eric W. Biederman
2006-09-27 6:34 ` Bill Huey
2006-09-27 7:29 ` Eric W. Biederman
2006-09-27 9:01 ` Ingo Molnar
2006-09-27 13:59 ` Eric W. Biederman
2006-09-27 14:06 ` Ingo Molnar [this message]
2006-09-27 16:18 ` Paul E. McKenney
2006-09-27 9:08 ` Ingo Molnar
2006-09-27 9:09 ` Bill Huey
2006-09-27 9:05 ` Ingo Molnar
2006-09-27 20:28 ` Esben Nielsen
2006-09-27 8:57 ` Ingo Molnar
2006-09-27 9:14 ` Bill Huey
2006-09-27 9:15 ` Ingo Molnar
2006-09-25 9:53 ` 2.6.18-rt1 Florian Schmidt
2006-09-26 7:57 ` 2.6.18-rt1 Florian Schmidt
2006-09-25 16:12 ` 2.6.18-rt1 Mike Kravetz
2006-09-27 8:34 ` 2.6.18-rt1 Ingo Molnar
2006-09-30 18:06 ` 2.6.18-rt1 Lee Revell
2006-09-30 18:18 ` 2.6.18-rt1 Dipankar Sarma
2006-09-30 18:25 ` 2.6.18-rt1 Lee Revell
2006-10-13 21:18 ` 2.6.18-rt1 Karsten Wiese
2006-10-13 21:20 ` 2.6.18-rt1 Lee Revell
2006-10-13 21:24 ` 2.6.18-rt1 Dipankar Sarma
2006-10-13 22:12 ` 2.6.18-rt1 Lee Revell
2006-10-13 22:16 ` 2.6.18-rt1 Dipankar Sarma
2006-10-17 14:46 ` 2.6.18-rt1 Lee Revell
2006-10-18 8:34 ` 2.6.18-rt1 Ingo Molnar
2006-10-18 7:12 ` 2.6.18-rt1 Ingo Molnar
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