From: Benjamin LaHaise <bcrl@redhat.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Linus Torvalds <torvalds@transmeta.com>,
Rusty Russell <rusty@rustcorp.com.au>,
mingo@elte.hu, Matthew Kirkwood <matthew@hairy.beasts.org>,
David Axmark <david@mysql.com>,
William Lee Irwin III <wli@holomorphy.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Lightweight userspace semaphores...
Date: Mon, 25 Feb 2002 11:32:40 -0500 [thread overview]
Message-ID: <20020225113239.A11675@redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.33.0202250808150.3268-100000@home.transmeta.com> <E16fOAO-0005Ml-00@the-village.bc.nu>
In-Reply-To: <E16fOAO-0005Ml-00@the-village.bc.nu>; from alan@lxorguk.ukuu.org.uk on Mon, Feb 25, 2002 at 04:39:56PM +0000
On Mon, Feb 25, 2002 at 04:39:56PM +0000, Alan Cox wrote:
> _alloca
> mmap
>
> Still fits on the stack 8)
Are we sure that forcing semaphore overhead to the size of a page is a
good idea? I'd much rather see a sleep/wakeup mechanism akin to wait
queues be exported by the kernel so that userspace can implement a rich
set of locking functions on top of that in whatever shared memory is
being used.
-ben
next prev parent reply other threads:[~2002-02-25 16:33 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-23 3:47 [PATCH] Lightweight userspace semaphores Rusty Russell
2002-02-23 15:03 ` Ingo Molnar
2002-02-23 18:20 ` Linus Torvalds
2002-02-23 18:28 ` Larry McVoy
2002-02-23 20:31 ` Ingo Molnar
2002-02-23 21:22 ` Alan Cox
2002-02-26 16:09 ` Hubertus Franke
2002-02-24 23:29 ` Rusty Russell
2002-02-24 23:48 ` Linus Torvalds
2002-02-25 1:10 ` Rusty Russell
2002-02-25 1:23 ` Linus Torvalds
2002-02-25 13:14 ` Alan Cox
2002-02-25 16:11 ` Linus Torvalds
2002-02-25 16:39 ` Alan Cox
2002-02-25 16:32 ` Benjamin LaHaise [this message]
2002-02-25 17:42 ` Alan Cox
2002-02-25 18:23 ` Hubertus Franke
2002-02-25 20:57 ` Hubertus Franke
2002-03-03 7:07 ` Rusty Russell
2002-02-25 17:06 ` Linus Torvalds
2002-02-25 17:31 ` Alan Cox
2002-02-25 17:20 ` Linus Torvalds
2002-02-25 17:50 ` Alan Cox
2002-02-25 17:44 ` Linus Torvalds
2002-02-25 18:06 ` Alan Cox
2002-02-25 19:31 ` Linus Torvalds
2002-02-24 4:57 ` Daniel Phillips
2002-02-25 19:51 ` Hubertus Franke
2002-02-26 12:15 ` [PATCH] 2.5.5 IDE clean 14 Martin Dalecki
2002-02-26 21:49 ` Keith Owens
2002-02-27 10:08 ` Martin Dalecki
2002-03-01 4:56 ` [PATCH] Lightweight userspace semaphores Eric W. Biederman
2002-03-02 14:54 ` Pavel Machek
2002-02-25 15:00 ` Hubertus Franke
2002-02-27 0:24 ` Rusty Russell
2002-02-27 15:53 ` Hubertus Franke
2002-03-01 0:24 ` Richard Henderson
2002-03-01 2:00 ` Hubertus Franke
2002-02-27 16:29 ` Hubertus Franke
2002-03-02 14:50 ` Hubertus Franke
2002-03-03 13:30 ` Rusty Russell
2002-03-04 16:51 ` Hubertus Franke
2002-03-05 4:41 ` Rusty Russell
2002-03-01 4:44 ` Eric W. Biederman
-- strict thread matches above, loose matches on Subject: below --
2002-02-27 8:43 [PATCH] Lightweight userspace semphores Martin Wirth
2002-02-27 15:24 ` Hubertus Franke
2002-02-27 17:17 ` Martin Wirth
2002-02-27 19:04 ` Hubertus Franke
[not found] ` <3C7FDF76.9040903@dlr.de>
2002-03-02 14:08 ` [PATCH] Lightweight userspace semaphores Hubertus Franke
[not found] <20020227163834.GF322@reload.nmd.msu.ru>
2002-02-27 16:58 ` Hubertus Franke
[not found] ` <20020227173307.GH322@reload.nmd.msu.ru>
2002-02-27 22:09 ` Hubertus Franke
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