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From: Dave Jones <davej@suse.de>
To: Robert Love <rml@tech9.net>
Cc: Daniel Phillips <phillips@arcor.de>,
	Jesse Barnes <jbarnes@sgi.com>,
	kernel-janitor-discuss 
	<kernel-janitor-discuss@lists.sourceforge.net>,
	linux-kernel@vger.kernel.org
Subject: Re: spinlock assertion macros
Date: Fri, 12 Jul 2002 19:58:15 +0200	[thread overview]
Message-ID: <20020712195815.F16956@suse.de> (raw)
In-Reply-To: <1026496182.1352.385.camel@sinai>; from rml@tech9.net on Fri, Jul 12, 2002 at 10:49:42AM -0700

On Fri, Jul 12, 2002 at 10:49:42AM -0700, Robert Love wrote:

 > > When I came up with the idea[1] I envisioned some linked-lists frobbing,
 > > but in more recent times, we can now check the preempt_count for a
 > > quick-n-dirty implementation (without the additional info of which locks
 > > we hold, lock-taker, etc).
 > 
 > Neat idea.  I have seen some other good similar ideas: check
 > preempt_count on schedule(), check preempt_count in usleep/msleep
 > (Arjan's idea), and check preempt_count in wakeup/context switch/etc.
 > code...

Sounds sensible. I'd like to see more self-checking bits added for
preemption. It may be the only way we ever pin down some of the
outstanding "don't make any sense" bugs.

        Dave

-- 
| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs

  reply	other threads:[~2002-07-12 17:55 UTC|newest]

Thread overview: 94+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <Pine.LNX.4.44L.0207061306440.8346-100000@imladris.surriel.com>
     [not found] ` <3D27390E.5060208@us.ibm.com>
2002-07-07 20:55   ` BKL removal Greg KH
2002-07-07 21:28     ` Oliver Neukum
2002-07-07 21:58       ` Dave Hansen
2002-07-07 22:38         ` Oliver Neukum
2002-07-07 21:35     ` Dave Hansen
2002-07-07 21:55       ` Thunder from the hill
2002-07-07 22:42         ` Dave Hansen
2002-07-07 23:07           ` Thunder from the hill
2002-07-07 23:23             ` Dave Hansen
2002-07-07 23:34               ` Thunder from the hill
2002-07-07 23:42                 ` Sean Neakums
2002-07-07 23:31             ` Oliver Neukum
2002-07-07 23:45               ` Dave Hansen
2002-07-08  2:34                 ` Matthew Wilcox
2002-07-08  2:52                   ` Dave Hansen
2002-07-08  3:06                     ` Alexander Viro
2002-07-08 12:33                       ` Matthew Wilcox
2002-07-08 14:53                         ` Dave Hansen
2002-07-08 12:29                     ` Matthew Wilcox
2002-07-08  2:58                   ` Alexander Viro
2002-07-08  3:06                     ` Dave Hansen
2002-07-08 12:15                     ` Matthew Wilcox
2002-07-08  6:34                 ` Oliver Neukum
2002-07-07 23:23           ` Oliver Neukum
2002-07-07 23:31             ` Dave Hansen
2002-07-07 23:51           ` Greg KH
2002-07-08  0:07             ` Dave Hansen
2002-07-08  2:12               ` Greg KH
2002-07-09  1:46                 ` Rick Lindsley
2002-07-09  4:38                   ` Greg KH
2002-07-09 19:31                     ` Rick Lindsley
2002-07-09 20:17                       ` Greg KH
2002-07-09 20:55                         ` Rick Lindsley
2002-07-09 21:00                           ` William Lee Irwin III
2002-07-09 21:12                             ` Robert Love
2002-07-09 14:19                               ` Dave Hansen
2002-07-09 21:29                                 ` Robert Love
2002-07-09 14:44                                   ` Dave Hansen
2002-07-09 21:47                                     ` Robert Love
2002-07-10  1:15                                       ` Arnaldo Carvalho de Melo
2002-07-10  3:27                                         ` Alexander Viro
2002-07-09 20:49                                           ` Dave Hansen
2002-07-10  5:30                                             ` Alexander Viro
2002-07-10 10:28                                               ` Sandy Harris
2002-07-18  0:30                                     ` David Wagner
2002-07-18  1:03                                       ` Daniel Phillips
2002-07-09 21:59                               ` William Lee Irwin III
2002-07-09 22:21                               ` Alan Cox
2002-07-10 13:31                                 ` jlnance
2002-07-10 14:17                                   ` Alan Cox
2002-07-15 20:53                                     ` Alexander Hoogerhuis
2002-07-15 22:07                                       ` Rik van Riel
2002-07-15 22:25                                         ` Thunder from the hill
2002-07-09 19:33                     ` Rick Lindsley
2002-07-09 20:12                       ` Greg KH
2002-07-09  4:49                   ` Drew P. Vogel
2002-07-09  5:25                     ` Dave Hansen
2002-07-09  5:21                   ` Larry McVoy
2002-07-09  7:59                     ` Roman Zippel
2002-07-10 10:03                     ` Marco Colombo
2002-07-10 14:40                       ` Matthew Wilcox
2002-07-10 16:46                         ` William Lee Irwin III
2002-07-11  9:57                           ` Marco Colombo
2002-07-10 21:28                     ` Rick Lindsley
2002-07-10 22:24                       ` Daniel Phillips
2002-07-10 23:36                         ` spinlock assertion macros Jesse Barnes
2002-07-11  0:54                           ` Andreas Dilger
2002-07-11  1:10                             ` Jesse Barnes
2002-07-11  5:31                           ` Daniel Phillips
2002-07-11  7:19                             ` george anzinger
2002-07-11 16:35                             ` Oliver Xymoron
2002-07-11 23:52                               ` Sandy Harris
2002-07-12  0:56                                 ` Daniel Phillips
2002-07-12  3:22                                 ` Oliver Xymoron
2002-07-11 18:03                             ` Jesse Barnes
2002-07-11 19:17                               ` Daniel Phillips
2002-07-12 12:07                                 ` Dave Jones
2002-07-12 12:55                                   ` Daniel Phillips
2002-07-12 19:24                                     ` Arnd Bergmann
2002-07-12 17:42                                       ` Daniel Phillips
2002-07-17  2:22                                         ` Jesse Barnes
2002-07-17  6:34                                           ` Daniel Phillips
2002-07-18 23:36                                             ` [PATCH] spinlock assertion macros for 2.5.26 Jesse Barnes
2002-07-17 11:09                                           ` spinlock assertion macros Arnd Bergmann
2002-07-12 20:41                                     ` Oliver Xymoron
2002-07-13  3:21                                       ` Daniel Phillips
2002-07-12 17:49                                   ` Robert Love
2002-07-12 17:58                                     ` Dave Jones [this message]
2002-07-11 10:51                           ` Arnd Bergmann
2002-07-07 22:24       ` BKL removal Greg KH
2002-07-08  0:56         ` Bernd Eckenfels
2002-07-10  0:30     ` Pavel Machek
     [not found] <0C01A29FBAE24448A792F5C68F5EA47D2B0FDD@nasdaq.ms.ensim.com>
2002-07-12  1:36 ` spinlock assertion macros pmenage
2002-07-12  4:38   ` Jesse Barnes

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