From: Mel Gorman <mel@csn.ul.ie>
To: Zwane Mwaikambo <zwane@arm.linux.org.uk>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [BUG] 2.5.73 Scheduling while atomic with taskfile IO and high memory
Date: Tue, 1 Jul 2003 01:02:57 +0100 (IST) [thread overview]
Message-ID: <Pine.LNX.4.53.0307010059170.22576@skynet> (raw)
In-Reply-To: <Pine.LNX.4.53.0306301702150.2299@montezuma.mastecende.com>
On Mon, 30 Jun 2003, Zwane Mwaikambo wrote:
> Could you try selecting your specific IDE chipset (or all), it doesn't
> look like PIO is getting along famously with various other bits. I also
> noticed TCQ, do you have any TCQ capable IDE devices?
>
Tried many things, in no particular order
o PCI chipsets disabled
o Disabled TCQ (device doesn't support it anyway)
o DMA disabled and ide_setup_dma() stub function added so it'll compile
o PCI Generic chipset support enabled
o Intel PIIX chipset support enabled
o All chipset under the sun supported
All come up with the same errors. The following workarounds let it
boot
o Removing inc_preempt_count() and dec_preempt_count() from kmap_atomic()
and kunmap_atomic()
o Disabling high memory
o Disabling taskfile IO
A quickie patch to sched.c shows that preempt_count() keeps incrementing
for each time the sleeping while atomic message is printed by the
cpu_idle() thread
--
Mel Gorman
prev parent reply other threads:[~2003-06-30 23:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-30 20:01 Mel Gorman
2003-06-30 20:37 ` Paul Larson
2003-07-01 0:32 ` Mel Gorman
2003-06-30 21:04 ` Zwane Mwaikambo
2003-07-01 0:02 ` Mel Gorman [this message]
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