From: Nick Piggin <nickpiggin@yahoo.com.au>
To: "David S. Miller" <davem@redhat.com>
Cc: William Lee Irwin III <wli@holomorphy.com>,
akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: 2.6.7-mm6
Date: Wed, 07 Jul 2004 12:29:32 +1000 [thread overview]
Message-ID: <40EB600C.8020603@yahoo.com.au> (raw)
In-Reply-To: <20040706170247.5bca760c.davem@redhat.com>
David S. Miller wrote:
> On Tue, 6 Jul 2004 16:36:18 -0700
> William Lee Irwin III <wli@holomorphy.com> wrote:
>
>
>>I have it isolated down to the sched-clean-init-idle.patch and
>>sched-clean-fork.patch. sched-clean-init-idle.patch fails to build without
>>the second of those two applied, so I didn't do any work to narrow it down
>>further.
>
>
> One thing to note is that we don't currently call the
> wake_up_forked_process() thing in our SMP idle bootup
> dispatcher in arch/sparc64/kernel/smp.c
>
> Perhaps that is somehow related to the problems.
> In that case the culprit would be the first patch,
> sched-clean-init-idle.patch
>
Yes, I missed sparc64 due to the lack of wake_up_forked_process. Dang.
Well, what used to happen is that wake_up_forked_process would put the
idle task on the runqueue like a regular process, then init_idle would
take it off again.
However after the patch, init_idle simply does all the work itself,
and doesn't have to deal with removal from the runqueue. Now sparc64
uses "kernel_thread" to clone its idle tasks, which *does* put the
process onto the runqueue. init_idle then also makes it the idle task.
This is probably why it blows up.
I guess another small function to remove the task from the runqueue
before calling init_idle for those arches that want it would be the
way to go.
Sorry, this is my fault. Got to run now, but I'll send a patch to try
in a few hours if someone hasn't already.
next prev parent reply other threads:[~2004-07-07 2:29 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-05 9:31 2.6.7-mm6 Andrew Morton
2004-07-05 10:18 ` 2.6.7-mm6 Christoph Hellwig
2004-07-05 10:44 ` 2.6.7-mm6 Christoph Hellwig
2004-07-05 10:32 ` 2.6.7-mm6 Redeeman
2004-07-05 13:54 ` 2.6.7-mm6 Frieder Buerzele
2004-07-05 14:41 ` 2.6.7-mm6 Redeeman
2004-07-05 10:39 ` 2.6.7-mm6 Martin Zwickel
2004-07-05 19:04 ` 2.6.7-mm6 Jurgen Kramer
2004-07-05 20:38 ` 2.6.7-mm6 - ppc32 inconsistent kallsyms data Joseph Fannin
2004-07-05 20:54 ` Andrew Morton
2004-07-06 2:06 ` Keith Owens
2004-07-06 7:31 ` Keith Owens
2004-07-06 7:43 ` Keith Owens
2004-07-06 20:54 ` Joseph Fannin
2004-07-06 9:09 ` Rusty Russell
2004-07-06 12:28 ` Keith Owens
2004-07-05 22:52 ` 2.6.7-mm6: ALSA: vortex_asXtalkGainsAllChan multiple definitions Adrian Bunk
2004-07-05 22:56 ` [patch] 2.6.7-mm6: let CDROM_PKTCDVD depend on experimental Adrian Bunk
2004-07-06 6:49 ` USB Lockups with 2.6.7-mm6, was Re: 2.6.7-mm6 Ralf Hildebrandt
2004-07-06 12:54 ` 2.6.7-mm6 William Lee Irwin III
2004-07-06 17:51 ` 2.6.7-mm6 Dmitry Torokhov
2004-07-06 18:55 ` 2.6.7-mm6 Jan-Benedict Glaw
2004-07-06 23:12 ` 2.6.7-mm6 William Lee Irwin III
2004-07-06 23:55 ` 2.6.7-mm6 William Lee Irwin III
2004-07-07 5:15 ` 2.6.7-mm6 Dmitry Torokhov
2004-07-07 6:37 ` 2.6.7-mm6 William Lee Irwin III
2004-07-07 12:47 ` 2.6.7-mm6 Dmitry Torokhov
2004-07-07 12:55 ` 2.6.7-mm6 William Lee Irwin III
2004-07-07 16:31 ` 2.6.7-mm6 Vojtech Pavlik
2004-07-07 17:15 ` 2.6.7-mm6 Dmitry Torokhov
2004-07-07 19:05 ` 2.6.7-mm6 Vojtech Pavlik
2004-07-06 22:34 ` 2.6.7-mm6 Andrew Morton
2004-07-06 22:45 ` 2.6.7-mm6 David S. Miller
2004-07-06 22:52 ` 2.6.7-mm6 William Lee Irwin III
2004-07-06 23:07 ` 2.6.7-mm6 Russell King
2004-07-06 23:36 ` 2.6.7-mm6 William Lee Irwin III
2004-07-07 0:02 ` 2.6.7-mm6 David S. Miller
2004-07-07 2:29 ` Nick Piggin [this message]
2004-07-07 7:35 ` 2.6.7-mm6 Ingo Molnar
2004-07-07 21:02 ` 2.6.7-mm6 David S. Miller
2004-07-09 2:45 ` 2.6.7-mm6 Nick Piggin
2004-07-09 2:51 ` 2.6.7-mm6 William Lee Irwin III
2004-07-09 5:09 ` 2.6.7-mm6 Nick Piggin
2004-07-09 6:29 ` 2.6.7-mm6 Ingo Molnar
2004-07-09 6:58 ` 2.6.7-mm6 William Lee Irwin III
2004-07-09 7:07 ` 2.6.7-mm6 Nick Piggin
2004-07-09 7:16 ` 2.6.7-mm6 William Lee Irwin III
2004-07-06 14:49 ` 2.6.7-mm6 - USB problems Jesse Stockall
2004-07-07 16:44 ` 2.6.7-mm6 Jesse Barnes
-- strict thread matches above, loose matches on Subject: below --
2004-07-05 14:41 2.6.7-mm6 Martin Knoblauch
2004-07-06 13:42 2.6.7-mm6 Dmitry Torokhov
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