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From: "Jörn Engel" <joern@wohnheim.fh-wedel.de>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Horst von Brand <vonbrand@inf.utfsm.cl>,
	Pavel Machek <pavel@suse.cz>, Andrew Morton <akpm@osdl.org>,
	Arjan van de Ven <arjanv@redhat.com>, Ingo Molnar <mingo@elte.hu>,
	Andrea Arcangeli <andrea@suse.de>, Rik van Riel <riel@redhat.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH] explicitly mark recursion count
Date: Wed, 2 Jun 2004 17:27:42 +0200	[thread overview]
Message-ID: <20040602152741.GC26474@wohnheim.fh-wedel.de> (raw)
In-Reply-To: <Pine.LNX.4.58.0406020807270.3403@ppc970.osdl.org>

On Wed, 2 June 2004 08:12:00 -0700, Linus Torvalds wrote:
> On Wed, 2 Jun 2004, Jörn Engel wrote:
> > 
> > Can I read this as:
> > Linus himself will use strong words to enforce all recursions in the
> > kernel to be either removed or properly documented.
> 
> If we have a good detector that is reliable and easy to run, why not?

Great!  So the official format to document recursions is plain english
for human readers?

> It will take some time, but I think the problem so far has been that the
> recursion can be hard to see. Some "core" cases are well-known (memory
> allocations during memory allocation, and filename lookup), and they 
> should be trivial to annotate. Knock wood. Others might be worse.

For sure.  There are some functions with multiple recursions around
them, real fun! :)

> > In that case, you have 273 recursions to deal with.  They are all in
> > the data I attached a few posts back.  Recursions would basically be
> > in the same league as huge stack hogs, sounds good.
> 
> Yes. And with huge stack hogs, we've not exactly "fixed them all in a 
> weekend", have we? But having a few people run the checking tools and 
> nagging every once in a while ends up eventually fixing things. At least 
> the most common ones.

s/a few people/Jörn/

Legal reasons.  I'll try to do this from time to time.

Jörn

-- 
To recognize individual spam features you have to try to get into the
mind of the spammer, and frankly I want to spend as little time inside
the minds of spammers as possible.
-- Paul Graham

  reply	other threads:[~2004-06-02 15:28 UTC|newest]

Thread overview: 90+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-05-23 19:43 4g/4g for 2.6.6 Phy Prabab
2004-05-23 20:32 ` Linus Torvalds
2004-05-23 20:51   ` Jeff Garzik
2004-05-24  1:55     ` Linus Torvalds
2004-05-24  2:19       ` Jeff Garzik
2004-05-24  2:33         ` Wim Coekaerts
2004-05-31  9:51           ` Pavel Machek
2004-05-24  3:30         ` Martin J. Bligh
2004-06-01  5:52       ` Eric W. Biederman
2004-05-23 21:55   ` Phy Prabab
2004-05-24  7:05     ` Arjan van de Ven
2004-05-24  7:11       ` Phy Prabab
2004-05-24  7:24         ` Arjan van de Ven
2004-05-24  7:27           ` Phy Prabab
2004-05-24 12:01             ` Dave Jones
2004-05-24  2:39   ` William Lee Irwin III
2004-05-24  8:25   ` Ingo Molnar
2004-05-24 12:48     ` Andrea Arcangeli
2004-05-25 19:15       ` Rik van Riel
2004-05-25 19:41         ` Andrea Arcangeli
2004-05-25 19:50           ` Rik van Riel
2004-05-25 20:10             ` Rik van Riel
2004-05-25 21:15               ` Andrea Arcangeli
2004-05-26 10:33                 ` 4k stacks in 2.6 Ingo Molnar
2004-05-26 12:50                   ` Jörn Engel
2004-05-26 12:53                     ` Arjan van de Ven
2004-05-26 13:00                       ` Jörn Engel
2004-05-26 13:05                         ` Arjan van de Ven
2004-05-26 16:41                           ` Jörn Engel
2004-05-27 12:45                             ` Ingo Molnar
2004-05-27 13:59                               ` Andrea Arcangeli
2004-05-27 14:03                                 ` Arjan van de Ven
2004-05-27 14:42                                   ` Andrea Arcangeli
2004-06-02 19:40                                     ` Bill Davidsen
2004-05-27 14:18                                 ` Brian Gerst
2004-05-27 14:50                                   ` Andrea Arcangeli
2004-05-27 14:55                                     ` Linus Torvalds
2004-05-27 15:39                                       ` Andrea Arcangeli
2004-05-27 18:31                                       ` Guy Sotomayor
2004-05-27 19:26                                         ` Brian Gerst
2004-06-01  5:56                             ` 4k stacks in 2.6 [worst offenders] Jörn Engel
2004-06-01  6:02                               ` [RFC PATCH] explicitly mark recursion count Jörn Engel
2004-06-01 12:20                                 ` Pavel Machek
2004-06-01 13:27                                   ` Jörn Engel
2004-06-01 13:32                                     ` Pavel Machek
2004-06-01 13:37                                       ` Jörn Engel
2004-06-01 19:48                                         ` Horst von Brand
2004-06-01 19:29                                   ` Horst von Brand
2004-06-01 19:58                                     ` Linus Torvalds
2004-06-02 13:16                                       ` Jörn Engel
2004-06-02 14:15                                         ` Linus Torvalds
2004-06-02 14:27                                           ` Jörn Engel
2004-06-02 14:45                                             ` Linus Torvalds
2004-06-02 15:04                                               ` Jörn Engel
2004-06-02 15:12                                                 ` Linus Torvalds
2004-06-02 15:27                                                   ` Jörn Engel [this message]
2004-06-02 15:52                                                     ` Linus Torvalds
2004-06-02 16:17                                                       ` Jörn Engel
2004-06-02 16:25                                                         ` Linus Torvalds
2004-06-02 17:17                                                           ` Jörn Engel
2004-06-02 17:32                                                             ` Greg KH
2004-06-02 17:46                                                               ` Jörn Engel
2004-06-02 14:35                                           ` Davide Libenzi
2004-06-02 18:20                                             ` Jörn Engel
2004-06-02 18:37                                               ` Davide Libenzi
2004-06-02 18:58                                                 ` Jörn Engel
2004-06-02 19:33                                                   ` Valdis.Kletnieks
2004-06-02 19:37                                                   ` viro
2004-06-02 19:45                                                     ` Jörn Engel
2004-06-02 19:59                                                       ` viro
2004-06-03  6:55                                                         ` Jörn Engel
2004-06-02 19:55                                                     ` Valdis.Kletnieks
2004-06-02 23:20                                                   ` Davide Libenzi
2004-06-03  7:29                                                     ` Jörn Engel
2004-06-01 12:39                                 ` viro
2004-06-01 13:26                                   ` Jörn Engel
2004-06-07 18:14                         ` 4k stacks in 2.6 Timothy Miller
2004-06-08  6:26                           ` Arjan van de Ven
2004-06-08  8:45                             ` Jörn Engel
2004-05-26 18:12                     ` David S. Miller
2004-05-26 19:02                       ` Matt Mackall
2004-05-26 19:25                         ` Dave Jones
2004-05-25 21:16               ` 4g/4g for 2.6.6 Andrew Morton
2004-05-25 21:48                 ` Ingo Molnar
2004-05-25 22:09                   ` David S. Miller
2004-05-25 22:20                     ` Ingo Molnar
2004-05-25 23:10                       ` David S. Miller
2004-05-25 21:04             ` Bill Davidsen
2004-05-24  1:33 ` Martin J. Bligh
2004-05-24  1:38   ` Phy Prabab

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