From: Andi Kleen <ak@suse.de>
To: Matthew Wilcox <willy@debian.org>
Cc: torvalds@osdl.org, ishii.hironobu@jp.fujitsu.com,
linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org
Subject: Re: [RFC/PATCH, 2/4] readX_check() performance evaluation
Date: Wed, 28 Jan 2004 20:19:22 +0100 [thread overview]
Message-ID: <20040128201922.2dc7bec7.ak@suse.de> (raw)
In-Reply-To: <20040128182003.GL11844@parcelfarce.linux.theplanet.co.uk>
On Wed, 28 Jan 2004 18:20:03 +0000
Matthew Wilcox <willy@debian.org> wrote:
> If there are, Linus' interface is probably the best one. If not, we could
> simply have readX_check() / writeX_check() call dev->driver->unregister()
> if they notice an error has occurred and then the driver doesn't even
> need to call read_pcix_errors().
It just won't really work for platforms with inexact MCEs for IO errors.
And even for those with exact MCEs it would probably be a nightmare
to implement (writing MCE handlers is extremly hard because you cannot
rely on any locking guarantees - even a printk can randomly deadlock)
For those the per pci_dev callback is the only realistic way.
-Andi
next prev parent reply other threads:[~2004-01-28 19:19 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-28 1:54 [RFC/PATCH, 2/4] readX_check() performance evaluation Hironobu Ishii
2004-01-28 2:55 ` Linus Torvalds
2004-01-28 4:44 ` Paul Mackerras
2004-01-28 8:58 ` Russell King
2004-01-28 16:15 ` Linus Torvalds
2004-01-28 17:01 ` Grant Grundler
2004-01-28 18:20 ` Matthew Wilcox
2004-01-28 19:19 ` Andi Kleen [this message]
2004-01-28 19:33 ` Linus Torvalds
2004-01-28 19:40 ` Andi Kleen
2004-01-28 20:06 ` Linus Torvalds
2004-01-28 20:15 ` Andi Kleen
2004-01-28 20:19 ` [RFC/PATCH, 2/4] readX_check() performance evaluation II Andi Kleen
2004-01-28 20:28 ` [RFC/PATCH, 2/4] readX_check() performance evaluation Linus Torvalds
2004-01-28 20:30 ` Linus Torvalds
2004-01-28 21:09 ` Andi Kleen
2004-01-28 21:43 ` Linus Torvalds
2004-01-28 21:52 ` Andi Kleen
2004-01-28 22:21 ` Linus Torvalds
2004-01-28 22:39 ` Andi Kleen
2004-01-28 22:59 ` Linus Torvalds
2004-01-29 12:24 ` Hironobu Ishii
2004-01-28 22:15 ` David S. Miller
2004-01-28 3:09 ` Matthew Wilcox
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