From: Christoph Lameter <clameter@sgi.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andi Kleen <ak@suse.de>, Jeremy Fitzhardinge <jeremy@goop.org>
Cc: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Subject: [patch 0/3] Per cpu relocation to ZERO and x86_32 percpu ops on x86_64
Date: Thu, 29 Nov 2007 22:43:05 -0800 [thread overview]
Message-ID: <20071130064305.459255715@sgi.com> (raw)
This patchset allows the use of x86_32 percpu ops on x86_64 while maintaining
%gs pointing to the pda. It does that by moving the x86_64 pda into
the percpu area (thereby pointing %gs at the per cpu area) and then
relocating the x86_64 per cpu variables to start at 0.
Patch applies on top of the per cpu cleanup patches V2.
See http://marc.info/?l=linux-kernel&m=119628478316525&w=2
Ultimately I think we can make the per cpu accessors arch independent
(see the RFC at http://marc.info/?l=linux-kernel&m=119552126330405&w=2).
There is a performance benefit from using these in core code.
--
next reply other threads:[~2007-11-30 6:44 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-30 6:43 Christoph Lameter [this message]
2007-11-30 6:43 ` [patch 1/3] Percpu infrastructure to rebase the per cpu area to 0UL Christoph Lameter
2007-12-02 3:04 ` Rusty Russell
2007-12-02 3:13 ` Rusty Russell
2007-11-30 6:43 ` [patch 2/3] X86_64: Declare pda as per cpu data thereby moving it into the cpu area Christoph Lameter
2007-11-30 6:43 ` [patch 3/3] x86_64: Make the x86_32 percpu operations usable on x86_64 Christoph Lameter
2007-11-30 20:07 ` Christoph Lameter
2007-11-30 11:24 ` [patch 0/3] Per cpu relocation to ZERO and x86_32 percpu ops " Ingo Molnar
2007-11-30 11:26 ` Ingo Molnar
2007-11-30 17:08 ` Christoph Lameter
2007-11-30 17:19 ` Christoph Lameter
2007-11-30 18:00 ` Ingo Molnar
2007-11-30 18:24 ` Christoph Lameter
2007-11-30 18:35 ` Ingo Molnar
2007-11-30 18:47 ` Christoph Lameter
2007-11-30 19:45 ` Ingo Molnar
2007-11-30 19:59 ` Christoph Lameter
2007-11-30 20:06 ` Ingo Molnar
2007-11-30 20:09 ` Christoph Lameter
2007-11-30 20:26 ` Ingo Molnar
2007-11-30 20:43 ` Ingo Molnar
2007-11-30 18:41 ` Ingo Molnar
2007-11-30 18:43 ` Christoph Lameter
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