From: Peter Zijlstra <peterz@infradead.org>
To: ijackson@chiark.greenend.org.uk
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Greg KH <gregkh@suse.de>, Ian Campbell <ijc@hellion.org.uk>,
linux-kernel@vger.kernel.org, stable@kernel.org,
stable-review@kernel.org, akpm@linux-foundation.org,
alan@lxorguk.ukuu.org.uk, Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: [RFC] mlock/stack guard interaction fixup
Date: Mon, 23 Aug 2010 18:25:51 +0200 [thread overview]
Message-ID: <1282580751.2605.1997.camel@laptop> (raw)
In-Reply-To: <19570.38608.79434.179797@chiark.greenend.org.uk>
On Mon, 2010-08-23 at 16:42 +0100, ijackson@chiark.greenend.org.uk
wrote:
>
> mlocking the stack is entirely sensible and normal for a real-time
> program. Most such programs use mlockall but there is no particular
> reason why a program that has some more specific requirements should
> use mlock to lock only a part of the stack. (Perhaps it has only one
> real-time thread?)
RT apps should pre-allocate and mlock their stack in advance (and
pre-fault too for the paranoid).
mlockall is a very bad interface and should really not be used.
next prev parent reply other threads:[~2010-08-23 16:26 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-20 23:59 [RFC] mlock/stack guard interaction fixup Linus Torvalds
2010-08-21 0:20 ` Mike Snitzer
2010-08-21 0:54 ` Linus Torvalds
2010-08-21 11:56 ` Ian Campbell
2010-08-21 15:48 ` Linus Torvalds
2010-08-21 16:08 ` Sam Ravnborg
2010-08-23 16:34 ` Tony Luck
2010-08-22 6:57 ` Ian Campbell
2010-08-22 7:33 ` Ian Campbell
2010-08-22 9:55 ` Ian Campbell
2010-08-22 16:43 ` Linus Torvalds
2010-08-22 17:25 ` Greg KH
2010-08-22 18:21 ` Linus Torvalds
2010-08-22 19:04 ` Greg KH
2010-08-23 9:22 ` Peter Zijlstra
2010-08-23 15:42 ` ijackson
2010-08-23 16:25 ` Peter Zijlstra [this message]
2010-08-23 17:18 ` Ian Jackson
2010-08-23 17:34 ` Linus Torvalds
2010-08-23 17:53 ` Peter Zijlstra
2010-08-23 17:59 ` Peter Zijlstra
2010-08-23 18:43 ` Darren Hart
2010-08-23 18:50 ` Jeremy Fitzhardinge
2010-08-23 19:07 ` Peter Zijlstra
2010-08-23 19:23 ` Jeremy Fitzhardinge
2010-08-23 19:26 ` Peter Zijlstra
2010-08-23 19:54 ` Jeremy Fitzhardinge
2010-08-24 7:08 ` Peter Zijlstra
2010-08-24 7:20 ` Peter Zijlstra
2010-08-23 19:03 ` Ian Campbell
2010-08-23 17:40 ` Peter Zijlstra
2010-08-23 18:53 ` Jeremy Fitzhardinge
2010-08-25 8:28 ` [Stable-review] " Stefan Bader
2010-08-23 9:00 ` Peter Zijlstra
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