From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Mark_H_Johnson@raytheon.com
Cc: Ingo Molnar <mingo@elte.hu>, Lee Revell <rlrevell@joe-job.com>,
Free Ekanayaka <free@agnula.org>,
Eric St-Laurent <ericstl34@sympatico.ca>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"K.R. Foley" <kr@cybsft.com>,
Felipe Alfaro Solana <lkml@felipe-alfaro.com>,
Daniel Schmitt <pnambic@unu.nu>,
"P.O. Gaillard" <pierre-olivier.gaillard@fr.thalesgroup.com>,
nando@ccrma.stanford.edu, luke@audioslack.com, free78@tin.it
Subject: Re: [patch] voluntary-preempt-2.6.9-rc1-bk4-R1
Date: Wed, 08 Sep 2004 23:31:08 +0100 [thread overview]
Message-ID: <1094682656.12371.28.camel@localhost.localdomain> (raw)
In-Reply-To: <OF08E1ED49.F0799581-ON86256F09.0070E65F-86256F09.0070E6A7@raytheon.com>
On Mer, 2004-09-08 at 21:33, Mark_H_Johnson@raytheon.com wrote:
> >.... Please disable IDE DMA and see
> >what happens (after hiding the PIO IDE codepath via
> >touch_preempt_timing()).
>
> Not quite sure where to add touch_preempt_timing() calls - somewhere in the
> loop in ide_outsl and ide_insl? [so we keep resetting the start /end
> times?]
If you haven't done hdparm -u1 that may be a reason you want to touch
these. To defend against some very bad old h/w where a stall in the I/O
stream to the disk causes corruption we disable IRQ's across the
transfer in PIO mode by default.
next prev parent reply other threads:[~2004-09-08 23:36 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-08 20:33 [patch] voluntary-preempt-2.6.9-rc1-bk4-R1 Mark_H_Johnson
2004-09-08 22:31 ` Alan Cox [this message]
2004-09-09 16:44 ` Thomas Charbonnel
2004-09-09 6:27 ` Ingo Molnar
2004-09-09 15:12 ` Ingo Molnar
2004-09-09 15:33 ` Ingo Molnar
-- strict thread matches above, loose matches on Subject: below --
2004-09-13 14:44 Mark_H_Johnson
2004-09-14 18:32 ` Ingo Molnar
2004-09-15 15:26 ` Stephen Smalley
2004-09-10 14:28 Mark_H_Johnson
2004-09-10 19:29 ` Ingo Molnar
2004-09-10 12:57 Mark_H_Johnson
2004-09-10 13:10 ` Ingo Molnar
2004-09-09 22:56 Mark_H_Johnson
2004-09-10 12:42 ` Ingo Molnar
2004-09-09 22:41 Mark_H_Johnson
2004-09-09 19:23 Mark_H_Johnson
2004-09-09 19:47 ` Ingo Molnar
2004-09-09 19:02 ` Alan Cox
2004-09-09 18:31 Mark_H_Johnson
2004-09-07 16:54 Mark_H_Johnson
2004-09-08 18:42 ` Ingo Molnar
2004-09-10 2:31 ` K.R. Foley
2004-09-10 17:56 ` K.R. Foley
2004-09-10 19:26 ` Ingo Molnar
2004-09-10 19:28 ` K.R. Foley
2004-09-09 16:02 ` Ingo Molnar
2004-09-02 22:14 [patch] voluntary-preempt-2.6.9-rc1-bk4-R0 Ingo Molnar
2004-09-03 0:24 ` Lee Revell
2004-09-03 3:17 ` Eric St-Laurent
2004-09-03 6:26 ` Lee Revell
2004-09-03 6:36 ` Ingo Molnar
2004-09-03 6:49 ` Lee Revell
2004-09-03 7:05 ` Ingo Molnar
2004-09-03 7:40 ` Lee Revell
2004-09-03 7:50 ` Free Ekanayaka
2004-09-03 8:05 ` Lee Revell
2004-09-03 9:25 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R1 Ingo Molnar
2004-09-03 9:50 ` Luke Yelavich
2004-09-03 10:29 ` Ingo Molnar
2004-09-03 10:43 ` Luke Yelavich
2004-09-03 11:33 ` Thomas Charbonnel
2004-09-03 11:49 ` Ingo Molnar
2004-09-03 12:05 ` Thomas Charbonnel
2004-09-03 16:14 ` Thomas Charbonnel
2004-09-03 17:36 ` Thomas Charbonnel
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