From: Christoph Hellwig <hch@infradead.org>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Jonathan Corbet <corbet@lwn.net>,
Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Thomas Gleixner <tglx@linutronix.de>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Alexander Viro <viro@ftp.linux.org.uk>,
linux-kernel@vger.kernel.org, Wim Van Sebroeck <wim@iguana.be>
Subject: Re: [PATCH 2/3, RFC] watchdog dev BKL pushdown
Date: Tue, 20 May 2008 02:20:56 -0400 [thread overview]
Message-ID: <20080520062056.GA5292@infradead.org> (raw)
In-Reply-To: <200805200114.24819.arnd@arndb.de>
On Tue, May 20, 2008 at 01:14:23AM +0200, Arnd Bergmann wrote:
> The Big Kernel Lock has been pushed down from chardev_open
> to misc_open, this change moves it to the individual watchdog
> driver open functions.
>
> As before, the change was purely mechanical, most drivers
> should actually not need the BKL.
Actually I'd prefer to fix this for real. This single open stuff aswell
as same set of ioctls are duplicated all over the watchdog drivers. We'd
be much better off introducing a simple watchdog layer that handles this
plus proper locking and convert drivers over to it gradually.
next prev parent reply other threads:[~2008-05-20 6:21 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-14 17:49 [announce] "kill the Big Kernel Lock (BKL)" tree Ingo Molnar
2008-05-14 18:30 ` Andi Kleen
2008-05-14 21:00 ` Alan Cox
2008-05-14 21:13 ` Andi Kleen
2008-05-14 21:16 ` H. Peter Anvin
2008-05-14 21:17 ` Alan Cox
2008-05-14 21:19 ` Alan Cox
2008-05-14 21:45 ` Linus Torvalds
2008-05-14 22:03 ` Andi Kleen
2008-05-15 13:34 ` Alan Cox
2008-05-15 14:27 ` Andi Kleen
2008-05-15 15:36 ` Alan Cox
2008-05-16 10:21 ` Andi Kleen
2008-05-15 8:02 ` Ingo Molnar
2008-05-14 18:41 ` Linus Torvalds
2008-05-14 19:41 ` Ingo Molnar
2008-05-14 20:05 ` Frederik Deweerdt
2008-05-14 21:45 ` Jonathan Corbet
2008-05-14 21:39 ` Alan Cox
2008-05-14 21:56 ` Linus Torvalds
2008-05-14 22:07 ` Jonathan Corbet
2008-05-14 22:14 ` Linus Torvalds
2008-05-22 20:20 ` Alan Cox
2008-05-16 15:44 ` [PATCH, RFC] char dev BKL pushdown Jonathan Corbet
2008-05-16 15:49 ` Christoph Hellwig
2008-05-16 16:03 ` [PATCH] kill empty chardev open/release methods Christoph Hellwig
2008-05-16 16:24 ` Alan Cox
2008-05-16 20:55 ` Alan Cox
2008-05-18 19:46 ` Jonathan Corbet
2008-05-18 19:58 ` Alan Cox
2008-05-16 16:22 ` [PATCH, RFC] char dev BKL pushdown Alan Cox
2008-05-16 16:30 ` Linus Torvalds
2008-05-16 16:43 ` Jonathan Corbet
2008-05-17 21:15 ` Arnd Bergmann
2008-05-18 20:26 ` Jonathan Corbet
2008-05-19 23:07 ` Arnd Bergmann
[not found] ` <200805200111.47275.arnd@arndb.de>
2008-05-19 23:14 ` [PATCH 2/3, RFC] watchdog " Arnd Bergmann
2008-05-20 6:20 ` Christoph Hellwig [this message]
2008-05-20 8:30 ` Arnd Bergmann
2008-05-20 15:47 ` Wim Van Sebroeck
2008-05-20 18:31 ` Alan Cox
2008-05-20 21:00 ` Arnd Bergmann
2008-05-22 9:34 ` Alan Cox
2008-05-20 9:08 ` Alan Cox
2008-05-20 8:42 ` Alan Cox
2008-05-19 23:26 ` [PATCH 1/3, RFC] misc char " Arnd Bergmann
2008-05-20 0:07 ` Mike Frysinger
2008-05-20 0:21 ` Jonathan Corbet
2008-05-20 0:46 ` Mike Frysinger
2008-05-20 8:46 ` Alan Cox
2008-05-20 23:01 ` Mike Frysinger
2008-05-20 23:25 ` Jonathan Corbet
2008-05-21 16:22 ` Mike Frysinger
2008-05-19 23:34 ` [PATCH 3/3, RFC] remove BKL from misc_open() Arnd Bergmann
2008-05-20 15:13 ` [PATCH, RFC] char dev BKL pushdown Jonathan Corbet
2008-05-20 17:21 ` Arnd Bergmann
2008-05-20 18:51 ` Alan Cox
2008-05-17 21:58 ` Linus Torvalds
2008-05-18 20:07 ` Jonathan Corbet
2008-05-14 22:11 ` [announce] "kill the Big Kernel Lock (BKL)" tree Andi Kleen
2008-05-14 22:16 ` Linus Torvalds
2008-05-14 22:21 ` Andi Kleen
2008-05-15 13:30 ` Alan Cox
2008-05-15 15:05 ` John Stoffel
2008-05-15 15:10 ` Andi Kleen
2008-05-15 15:18 ` John Stoffel
2008-05-15 15:45 ` Andi Kleen
2008-05-15 8:44 ` Jan Engelhardt
2008-05-15 14:54 ` Diego Calleja
2008-05-14 21:46 ` Alan Cox
2008-05-14 22:11 ` Linus Torvalds
2008-05-14 22:15 ` Andi Kleen
2008-05-15 17:41 ` Linus Torvalds
2008-05-15 20:27 ` Arjan van de Ven
2008-05-15 20:45 ` Peter Zijlstra
2008-05-15 21:22 ` Arjan van de Ven
2008-05-17 0:14 ` Kevin Winchester
2008-05-17 0:37 ` Kevin Winchester
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