From: Russell King <rmk@arm.linux.org.uk>
To: Robert Love <rml@tech9.net>
Cc: Andrew Morton <akpm@zip.com.au>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] only irq-safe atomic ops
Date: Sat, 23 Feb 2002 09:38:12 +0000 [thread overview]
Message-ID: <20020223093812.B32099@flint.arm.linux.org.uk> (raw)
In-Reply-To: <1014444810.1003.53.camel@phantasy> <3C773C02.93C7753E@zip.com.au> <1014449389.1003.149.camel@phantasy>
In-Reply-To: <1014449389.1003.149.camel@phantasy>; from rml@tech9.net on Sat, Feb 23, 2002 at 02:29:48AM -0500
On Sat, Feb 23, 2002 at 02:29:48AM -0500, Robert Love wrote:
> This would be atomic and thus preempt-safe on any sane arch I know, as
> long as we are dealing with a normal type int. Admittedly, however, we
> can't be sure what the compiler would do.
Any sane RISC architecture probably doesn't have a single "increment this
memory location" instruction.
--
Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html
next prev parent reply other threads:[~2002-02-23 9:38 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-23 6:13 Robert Love
2002-02-23 6:51 ` Andrew Morton
2002-02-23 7:29 ` Robert Love
2002-02-23 7:54 ` Andrew Morton
2002-02-23 11:38 ` yodaiken
2002-02-23 18:20 ` Robert Love
2002-02-23 19:06 ` yodaiken
2002-02-23 21:57 ` Roman Zippel
2002-02-23 22:10 ` Andrew Morton
2002-02-23 22:23 ` yodaiken
2002-02-23 22:40 ` Andrew Morton
2002-02-23 22:48 ` yodaiken
2002-02-23 23:45 ` Robert Love
2002-02-23 23:56 ` Andrew Morton
2002-02-24 1:05 ` yodaiken
2002-02-24 1:08 ` Robert Love
2002-02-23 23:13 ` Robert Love
2002-02-23 22:00 ` John Levon
2002-02-23 22:43 ` yodaiken
2002-02-23 20:01 ` Stephen Lord
2002-02-23 20:27 ` Andrew Morton
2002-02-23 9:38 ` Russell King [this message]
[not found] <3C773C02.93C7753E@zip.com.au.suse.lists.linux.kernel>
[not found] ` <1014444810.1003.53.camel@phantasy.suse.lists.linux.kernel>
[not found] ` <1014449389.1003.149.camel@phantasy.suse.lists.linux.kernel>
[not found] ` <3C774AC8.5E0848A2@zip.com.au.suse.lists.linux.kernel>
[not found] ` <3C77F503.1060005@sgi.com.suse.lists.linux.kernel>
[not found] ` <3C77FB35.16844FE7@zip.com.au.suse.lists.linux.kernel>
2002-02-23 20:56 ` Andi Kleen
2002-02-23 21:06 ` Andrew Morton
2002-02-23 21:17 ` Stephen Lord
2002-02-23 21:42 ` Andrew Morton
2002-02-23 22:10 ` Stephen Lord
2002-02-23 22:34 ` Andrew Morton
2002-02-23 23:07 ` Mike Fedyk
2002-02-23 23:47 ` Andrew Morton
2002-02-25 13:02 ` Stephen Lord
2002-02-25 13:12 ` Jens Axboe
2002-02-25 13:18 ` Stephen Lord
2002-02-25 19:42 ` Andrew Morton
2002-02-25 19:45 ` Steve Lord
2002-02-25 20:05 ` Andrew Morton
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