From: Len Brown <len.brown-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: Willy Tarreau <willy-tRhHnHjXm5DYtjvyW6yDsg@public.gmane.org>
Cc: Arkadiusz Miskiewicz
<arekm-k0Z414SquRyhPH1hqNUYSQ@public.gmane.org>,
Marcelo Tosatti
<marcelo.tosatti-3EexvZdKGZRWk0Htik3J/w@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
ACPI Developers
<acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Subject: Re: Linux 2.4.26-rc1 (cmpxchg vs 80386 build)
Date: 29 Mar 2004 17:07:42 -0500 [thread overview]
Message-ID: <1080598062.983.3.camel@dhcppc4> (raw)
In-Reply-To: <20040329052238.GD1276-HkMpAodKYdnXX8ko2wsARw@public.gmane.org>
On Mon, 2004-03-29 at 00:22, Willy Tarreau wrote:
> > 4. re-implement locks for the 80386 case.
>
> I like this one, but a simpler way : don't support SMP in this case, so that
> we won't have to play with locks. This would lead to something like this :
Linux uses this locking mechanism to coordinate shared access
to hardware registers with embedded controllers,
which is true also on uniprocessors too.
thanks,
-Len
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WARNING: multiple messages have this Message-ID (diff)
From: Len Brown <len.brown@intel.com>
To: Willy Tarreau <willy@w.ods.org>
Cc: Arkadiusz Miskiewicz <arekm@pld-linux.org>,
Marcelo Tosatti <marcelo.tosatti@cyclades.com>,
linux-kernel@vger.kernel.org,
ACPI Developers <acpi-devel@lists.sourceforge.net>
Subject: Re: Linux 2.4.26-rc1 (cmpxchg vs 80386 build)
Date: 29 Mar 2004 17:07:42 -0500 [thread overview]
Message-ID: <1080598062.983.3.camel@dhcppc4> (raw)
In-Reply-To: <20040329052238.GD1276@alpha.home.local>
On Mon, 2004-03-29 at 00:22, Willy Tarreau wrote:
> > 4. re-implement locks for the 80386 case.
>
> I like this one, but a simpler way : don't support SMP in this case, so that
> we won't have to play with locks. This would lead to something like this :
Linux uses this locking mechanism to coordinate shared access
to hardware registers with embedded controllers,
which is true also on uniprocessors too.
thanks,
-Len
next prev parent reply other threads:[~2004-03-29 22:07 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <A6974D8E5F98D511BB910002A50A6647615F6939@hdsmsx402.hd.intel.com>
[not found] ` <A6974D8E5F98D511BB910002A50A6647615F6939-N2PTB0HCzHJF3Yvz3xaN/VDQ4js95KgL@public.gmane.org>
2004-03-29 4:49 ` Linux 2.4.26-rc1 (cmpxchg vs 80386 build) Len Brown
2004-03-29 4:49 ` Len Brown
[not found] ` <1080535754.16221.188.camel-D2Zvc0uNKG8@public.gmane.org>
2004-03-29 0:09 ` Andi Kleen
2004-03-29 0:09 ` [ACPI] " Andi Kleen
2004-03-29 5:22 ` Willy Tarreau
2004-03-29 5:22 ` Willy Tarreau
2004-03-29 7:01 ` Denis Vlasenko
[not found] ` <200403290901.47695.vda-so6tiL4DrmS23Ynj82S0jdyBExgiH1vWcG62WxB9dV4@public.gmane.org>
2004-03-29 9:56 ` Arkadiusz Miskiewicz
[not found] ` <200403291156.38961.arekm-k0Z414SquRyhPH1hqNUYSQ@public.gmane.org>
2004-03-29 11:31 ` Alan Cox
2004-03-29 19:57 ` Willy Tarreau
[not found] ` <20040329052238.GD1276-HkMpAodKYdnXX8ko2wsARw@public.gmane.org>
2004-03-29 11:05 ` Frank Mehnert
2004-03-29 22:07 ` Len Brown [this message]
2004-03-29 22:07 ` Len Brown
2004-03-30 12:56 ` [ACPI] " Alan Cox
2004-03-30 13:15 ` Richard B. Johnson
2004-03-30 14:22 ` Willy Tarreau
2004-03-30 14:48 ` Richard B. Johnson
2004-03-30 15:09 ` Willy Tarreau
[not found] ` <20040330150949.GA22073-HkMpAodKYdnXX8ko2wsARw@public.gmane.org>
2004-03-30 15:33 ` Richard B. Johnson
2004-03-30 15:33 ` [ACPI] " Richard B. Johnson
2004-03-30 16:14 ` Willy Tarreau
2004-03-30 16:42 ` Chris Friesen
[not found] ` <4069A359.7040908-hwFIcccggHZv6pq1l3V1OdBPR1lH4CV8@public.gmane.org>
2004-03-30 17:44 ` Len Brown
2004-03-30 17:44 ` [ACPI] " Len Brown
2004-03-30 18:30 ` Arkadiusz Miskiewicz
2004-03-30 20:05 ` Len Brown
2004-03-30 20:25 ` Arkadiusz Miskiewicz
2004-03-30 21:49 ` Len Brown
2004-03-30 20:08 ` Bill Davidsen
[not found] ` <4069D3D2.2020402-sQDSfeB7uhw@public.gmane.org>
2004-03-31 11:13 ` Maciej W. Rozycki
2004-03-31 11:13 ` [ACPI] " Maciej W. Rozycki
2004-03-31 13:04 ` Bill Davidsen
2004-03-31 15:02 ` Jamie Lokier
2004-04-01 12:29 ` Maciej W. Rozycki
2004-04-01 13:17 ` Richard B. Johnson
2004-05-08 10:18 ` Denis Vlasenko
[not found] ` <Pine.LNX.4.55.0404011423070.3675-rsPqkUlH4Vdx0R2ya2r/wqsMm+1xrEX8@public.gmane.org>
2004-04-01 20:46 ` Len Brown
2004-04-01 20:46 ` [ACPI] " Len Brown
[not found] ` <1080852371.30349.19.camel-D2Zvc0uNKG8@public.gmane.org>
2004-04-02 10:54 ` Maciej W. Rozycki
2004-04-02 10:54 ` [ACPI] " Maciej W. Rozycki
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