From: Andi Kleen <ak@suse.de>
To: Christoph Lameter <clameter@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>,
Michal Piotrowski <michal.k.k.piotrowski@gmail.com>,
Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org
Subject: Re: broken local_t on i386
Date: Mon, 12 Jun 2006 19:55:47 +0200 [thread overview]
Message-ID: <200606121955.47803.ak@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.64.0606121139380.20123@schroedinger.engr.sgi.com>
On Monday 12 June 2006 20:42, Christoph Lameter wrote:
> On Mon, 12 Jun 2006, Andi Kleen wrote:
> > Saving two instructions? And PDA is usually in L1. I doubt you could
> > benchmark a difference.
>
> The two instructions occur over and over again for each PDA reference. And
> then there are now two more instruction for disabling preempt and
> reenabling preempt.
Only for those who set CONFIG_OVERHEAD
> A simple dec/inc <absolute location> would be nicely suitable for
> inlining per processor counters.
Possible, but is it worth reinventing the linker?
-Andi
next prev parent reply other threads:[~2006-06-12 18:56 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-10 4:40 2.6.16-rc6-mm2 Andrew Morton
2006-06-10 10:23 ` 2.6.16-rc6-mm2 Michal Piotrowski
2006-06-10 16:24 ` 2.6.16-rc6-mm2 Andrew Morton
2006-06-10 16:43 ` 2.6.16-rc6-mm2 Christoph Lameter
2006-06-10 16:51 ` 2.6.16-rc6-mm2 Christoph Lameter
2006-06-10 17:03 ` 2.6.16-rc6-mm2 Andrew Morton
2006-06-10 18:04 ` 2.6.16-rc6-mm2 Christoph Lameter
2006-06-10 18:14 ` 2.6.16-rc6-mm2 Michal Piotrowski
2006-06-10 18:31 ` 2.6.16-rc6-mm2 Christoph Lameter
2006-06-10 18:35 ` 2.6.16-rc6-mm2 Michal Piotrowski
2006-06-12 11:05 ` 2.6.16-rc6-mm2 Ingo Molnar
2006-06-12 11:48 ` 2.6.16-rc6-mm2 Ingo Molnar
2006-06-12 12:14 ` 2.6.16-rc6-mm2 Andi Kleen
2006-06-12 13:07 ` 2.6.16-rc6-mm2 Ingo Molnar
2006-06-12 13:41 ` 2.6.16-rc6-mm2 Andi Kleen
2006-06-13 3:28 ` 2.6.16-rc6-mm2 Keith Owens
2006-06-13 4:56 ` 2.6.16-rc6-mm2 Andi Kleen
2006-06-13 5:08 ` 2.6.16-rc6-mm2 Keith Owens
2006-06-13 5:18 ` 2.6.16-rc6-mm2 Andi Kleen
2006-06-13 5:43 ` 2.6.16-rc6-mm2 Nick Piggin
2006-06-13 5:48 ` 2.6.16-rc6-mm2 Andi Kleen
2006-06-13 11:45 ` 2.6.16-rc6-mm2 Andrew Morton
2006-06-13 12:41 ` 2.6.16-rc6-mm2 Keith Owens
2006-06-12 16:37 ` broken local_t on i386 Christoph Lameter
2006-06-12 16:48 ` Andi Kleen
2006-06-12 16:54 ` Christoph Lameter
2006-06-12 17:06 ` Andi Kleen
2006-06-12 17:11 ` Christoph Lameter
2006-06-12 17:29 ` Andi Kleen
2006-06-12 18:14 ` Lee Revell
2006-06-12 18:46 ` Alan Cox
2006-06-12 18:27 ` Christoph Lameter
2006-06-12 17:35 ` Andi Kleen
2006-06-12 18:42 ` Christoph Lameter
2006-06-12 17:55 ` Andi Kleen [this message]
2006-06-12 18:59 ` Christoph Lameter
2006-06-12 18:11 ` Andi Kleen
2006-06-12 19:15 ` Christoph Lameter
2006-06-13 3:36 ` Andi Kleen
2006-06-12 20:12 ` Alan Cox
2006-06-13 4:02 ` Andi Kleen
2006-06-12 13:50 ` 2.6.16-rc6-mm2 Michal Piotrowski
2006-06-12 14:20 ` 2.6.16-rc6-mm2 Ingo Molnar
2006-06-12 14:57 ` 2.6.16-rc6-mm2 Michal Piotrowski
[not found] ` <6bffcb0e0606101126v55cc20dbk275d8aa7fdcb0f1a@mail.gmail.com>
2006-06-10 18:36 ` 2.6.16-rc6-mm2 Christoph Lameter
2006-06-10 19:08 ` 2.6.16-rc6-mm2 Michal Piotrowski
2006-06-10 16:58 ` 2.6.16-rc6-mm2 Andrew Morton
2006-06-10 14:56 ` 2.6.16-rc6-mm2 Martin J. Bligh
2006-06-10 14:56 ` 2.6.16-rc6-mm2 Martin J. Bligh
2006-06-10 15:40 ` 2.6.16-rc6-mm2 Felix Oxley
2006-06-10 16:43 ` 2.6.16-rc6-mm2 Andrew Morton
2006-06-10 16:43 ` 2.6.16-rc6-mm2 Andrew Morton
2006-06-10 16:18 ` 2.6.16-rc6-mm2 Dominik Karall
2006-06-10 16:25 ` 2.6.16-rc6-mm2 Michal Piotrowski
2006-06-10 17:42 ` 2.6.16-rc6-mm2 Dominik Karall
2006-06-10 18:43 ` 2.6.16-rc6-mm2 Rafael J. Wysocki
2006-06-11 10:17 ` 2.6.16-rc6-mm2 Jan Engelhardt
2006-06-11 10:58 ` 2.6.16-rc6-mm2 Rafael J. Wysocki
2006-06-12 16:56 ` 2.6.16-rc6-mm2 Zan Lynx
2006-06-12 17:35 ` 2.6.16-rc6-mm2 Cedric Le Goater
2006-06-12 20:55 ` Fwd: 2.6.16-rc6-mm2 Michal Piotrowski
2006-06-12 22:16 ` 2.6.16-rc6-mm2 Christoph Lameter
2006-06-13 0:24 ` 2.6.16-rc6-mm2 Christoph Lameter
2006-06-14 21:56 ` 2.6.16-rc6-mm2 Trond Myklebust
2006-06-13 7:22 ` 2.6.16-rc6-mm2 Cedric Le Goater
2006-06-13 17:54 ` 2.6.16-rc6-mm2 Christoph Lameter
2006-06-13 19:35 ` 2.6.16-rc6-mm2 Christoph Lameter
2006-06-13 20:22 ` 2.6.16-rc6-mm2 Cedric Le Goater
2006-06-13 21:13 ` 2.6.16-rc6-mm2 Christoph Lameter
2006-06-13 21:50 ` 2.6.16-rc6-mm2 Cedric Le Goater
2006-06-12 18:19 ` 2.6.16-rc6-mm2 Badari Pulavarty
2006-06-12 20:48 ` Fwd: 2.6.16-rc6-mm2 Michal Piotrowski
2006-06-13 13:54 ` 2.6.16-rc6-mm2 Andrew Morton
2006-06-13 17:04 ` 2.6.16-rc6-mm2 Badari Pulavarty
2006-06-12 22:09 ` 2.6.16-rc6-mm2 Steve Fox
2006-06-13 13:54 ` 2.6.16-rc6-mm2 Andrew Morton
2006-06-13 14:10 ` 2.6.16-rc6-mm2 Sergei Shtylyov
2006-06-13 19:01 ` 2.6.16-rc6-mm2 Steve Fox
2006-06-13 21:43 ` 2.6.16-rc6-mm2 Andrew Morton
2006-06-13 21:51 ` 2.6.16-rc6-mm2 Badari Pulavarty
2006-06-13 22:36 ` 2.6.16-rc6-mm2 Steve Fox
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