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From: Jens Axboe <axboe@suse.de>
To: Lee Revell <rlrevell@joe-job.com>
Cc: Andrea Arcangeli <andrea@novell.com>, Ingo Molnar <mingo@elte.hu>,
	Chris Wedgwood <cw@f00f.org>,
	Arjan van de Ven <arjanv@redhat.com>,
	Hugh Dickins <hugh@veritas.com>,
	"Martin J. Bligh" <mbligh@aracnet.com>,
	Alan Cox <alan@lxorguk.ukuu.org.uk>,
	LKML <linux-kernel@vger.kernel.org>,
	Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH 1/3] Separate IRQ-stacks from 4K-stacks option
Date: Mon, 13 Sep 2004 09:32:59 +0200	[thread overview]
Message-ID: <20040913073259.GF2326@suse.de> (raw)
In-Reply-To: <1095027951.22893.69.camel@krustophenia.net>

On Sun, Sep 12 2004, Lee Revell wrote:
> I am still unsure why the IDE i/o completion is the one place that
> breaks the assumption that hardirq handlers execute quickly.

I'm not sure why you think so. You also mention IDE as being the
'glaring exception' and it's definitely wrong. Most drivers run the
completion from hardirq context, SCSI is the exception since it does it
defers the completion to softirq context.

-- 
Jens Axboe


  parent reply	other threads:[~2004-09-13  7:34 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-09-09 23:25 [PATCH 1/3] Separate IRQ-stacks from 4K-stacks option Chris Wedgwood
2004-09-09 23:55 ` Brian Gerst
2004-09-09 23:59   ` Chris Wedgwood
2004-09-10  6:40 ` Arjan van de Ven
2004-09-10  6:45   ` Chris Wedgwood
2004-09-10  6:52     ` Arjan van de Ven
2004-09-10  7:15       ` Chris Wedgwood
2004-09-10  7:21         ` Arjan van de Ven
2004-09-10  7:23           ` Chris Wedgwood
2004-09-10  7:35             ` Arjan van de Ven
2004-09-10  9:12         ` Alan Cox
2004-09-10  9:14   ` Alan Cox
2004-09-10 10:27     ` Russell King
2004-09-10 14:30     ` Martin J. Bligh
2004-09-10 15:06       ` Chris Wedgwood
2004-09-10 15:07       ` Hugh Dickins
2004-09-10 15:12         ` Alan Cox
2004-09-10 15:15         ` Arjan van de Ven
2004-09-10 15:28           ` Andrea Arcangeli
2004-09-10 15:09             ` Alan Cox
2004-09-10 15:34             ` Arjan van de Ven
2004-09-12 14:17               ` Andrea Arcangeli
2004-09-12 15:03                 ` Martin J. Bligh
2004-09-12 15:45                   ` Zwane Mwaikambo
2004-09-12 16:00                     ` Martin J. Bligh
2004-10-20 16:27                     ` Lee Revell
2004-10-21 15:18                       ` Zwane Mwaikambo
2004-09-12 19:18               ` Lee Revell
2004-09-12 19:25                 ` Chris Wedgwood
2004-09-12 19:35                   ` Ingo Molnar
2004-09-12 19:40                     ` Chris Wedgwood
2004-09-12 19:44                       ` Ingo Molnar
2004-09-12 20:33                     ` Andrea Arcangeli
2004-09-12 21:36                       ` Lee Revell
2004-09-12 22:07                         ` Andrea Arcangeli
2004-09-12 22:25                           ` Lee Revell
2004-09-13  6:16                             ` Ingo Molnar
2004-09-13  7:27                               ` Lee Revell
2004-09-15 19:43                               ` Bill Davidsen
2004-09-15 19:51                                 ` Andrea Arcangeli
2004-09-15 20:00                                 ` Ingo Molnar
2004-09-15 20:39                                   ` Lee Revell
2004-10-20 17:50                               ` Timothy Miller
2004-09-13  7:32                             ` Jens Axboe [this message]
2004-09-13 10:31                               ` Andrea Arcangeli
2004-09-13 10:34                                 ` Arjan van de Ven
2004-09-13 12:30                                 ` Jens Axboe
2004-10-20 17:46                             ` Timothy Miller
2004-09-13 10:51                         ` Alan Cox
2004-09-13 20:26                 ` Bill Davidsen
2004-09-14  5:20                   ` Lee Revell
2004-10-20 15:46               ` Timothy Miller
2004-10-20 15:35                 ` Arjan van de Ven
2004-10-20 16:39                   ` Lee Revell
2004-10-20 16:50                     ` Andrea Arcangeli
2004-10-20 16:55                       ` Lee Revell
2004-10-20 17:08                         ` Andrea Arcangeli
2004-10-20 17:15                           ` Lee Revell
2004-10-20 17:34                             ` Andrea Arcangeli
2004-10-20 17:58                     ` Timothy Miller
2004-10-20 17:55                       ` Lee Revell
2004-10-20 18:25                         ` Timothy Miller
2004-10-20 18:28                           ` Lee Revell
2004-10-20 18:51                     ` Alan Cox
2004-10-20 23:19                       ` Lee Revell
2004-09-10 15:16         ` Martin J. Bligh
2004-10-20 15:43         ` Timothy Miller
2004-10-20 15:35           ` Arjan van de Ven
2004-09-10 15:58       ` Alexander E. Patrakov
2004-09-10 16:19         ` Nathan Bryant
2004-09-10 17:54           ` Martin J. Bligh
2004-09-10 17:54       ` Bill Davidsen
2004-09-10  9:27 ` Alan Cox

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