From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: lm@bitmover.com (Larry McVoy)
Cc: torvalds@transmeta.com (Linus Torvalds),
mingo@elte.hu (Ingo Molnar),
rusty@rustcorp.com.au (Rusty Russell),
matthew@hairy.beasts.org (Matthew Kirkwood),
bcrl@redhat.com (Benjamin LaHaise),
david@mysql.com (David Axmark),
wli@holomorphy.com (William Lee Irwin III),
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Lightweight userspace semaphores...
Date: Sat, 23 Feb 2002 21:22:59 +0000 (GMT) [thread overview]
Message-ID: <E16ejdD-000690-00@the-village.bc.nu> (raw)
In-Reply-To: <20020223102805.F11156@work.bitmover.com> from "Larry McVoy" at Feb 23, 2002 10:28:05 AM
> Exactly. SMP gives you coherent memory and test-and-set or some other
> atomic operation. Why not use it?
Coherent memory on some platforms, locks on some platforms. Fortunately both
on several important architectures. It needs a much cleaner API but in
user space to wrap the user mode/kernel mode mixed locks. You need the
kernel side for sleeping cases
next prev parent reply other threads:[~2002-02-23 21:10 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-23 3:47 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 [this message]
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
2002-02-25 17:42 ` Alan Cox
2002-02-25 18:23 ` Hubertus Franke
2002-02-25 20:57 ` Hubertus Franke
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
2002-03-03 7:07 ` [PATCH] Lightweight userspace semaphores Rusty Russell
2002-03-01 4:56 ` Eric W. Biederman
2002-03-02 14:54 ` Pavel Machek
2002-02-25 15:00 ` Hubertus Franke
2002-03-01 4:44 ` Eric W. Biederman
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
2002-02-27 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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