From: Tim Chen <tim.c.chen@linux.intel.com>
To: Andrew Morton <akpm@osdl.org>
Cc: herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org,
leonid.i.ananiev@intel.com
Subject: Re: [PATCH] Fix WARN_ON / WARN_ON_ONCE regression
Date: Tue, 03 Oct 2006 17:09:29 -0700 [thread overview]
Message-ID: <1159920569.8035.71.camel@localhost.localdomain> (raw)
In-Reply-To: <20061003170705.6a75f4dd.akpm@osdl.org>
On Tue, 2006-10-03 at 17:07 -0700, Andrew Morton wrote:
>
> Perhaps the `static int __warn_once' is getting put in the same cacheline
> as some frequently-modified thing. Perhaps try marking that as __read_mostly?
>
I've tried marking static int __warn_once as __read_mostly. However, it
did not help with reducing the cache miss :(
So I would suggest reversing the "Let WARN_ON/WARN_ON_ONCE return the
condition" patch. It has just been added 3 days ago so reversing it
should not be a problem.
Tim
next prev parent reply other threads:[~2006-10-04 0:58 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-03 23:04 [PATCH] Fix WARN_ON / WARN_ON_ONCE regression Tim Chen
2006-10-03 23:19 ` Tim Chen
2006-10-04 0:06 ` Jeremy Fitzhardinge
2006-10-03 23:47 ` Tim Chen
2006-10-04 4:39 ` Jeremy Fitzhardinge
2006-10-04 13:21 ` Tim Chen
2006-10-04 16:30 ` Andrew Morton
2006-10-04 16:22 ` Tim Chen
2006-10-04 17:34 ` Andrew Morton
2006-10-04 20:43 ` Tim Chen
2006-10-10 1:09 ` Tim Chen
2006-10-10 13:04 ` Steven Rostedt
2006-10-10 15:41 ` Tim Chen
2006-10-10 20:03 ` Jeremy Fitzhardinge
2006-10-04 0:07 ` Andrew Morton
2006-10-03 23:42 ` Tim Chen
2006-10-04 0:09 ` Tim Chen [this message]
2006-10-04 1:14 ` Andrew Morton
2006-10-04 1:47 ` Nick Piggin
2006-10-04 3:24 ` Andrew James Wade
2006-10-04 3:32 ` Andrew Morton
2006-10-04 16:47 ` Andrew James Wade
2006-10-04 22:06 ` Andrew Morton
2006-10-05 8:13 ` Andrew James Wade
2006-10-05 8:36 ` Andrew Morton
2006-10-05 21:31 ` Andrew James Wade
2006-10-05 21:01 ` Tim Chen
-- strict thread matches above, loose matches on Subject: below --
2006-10-04 16:57 Ananiev, Leonid I
2006-10-04 17:28 ` Andrew Morton
2006-10-08 0:28 ` Steven Rostedt
2006-10-08 0:39 ` Jeremy Fitzhardinge
2006-10-04 21:55 Ananiev, Leonid I
2006-10-05 21:37 ` Andrew Morton
2006-10-05 21:43 ` Jeremy Fitzhardinge
2006-10-05 21:52 ` Andrew Morton
2006-10-05 22:02 ` Herbert Xu
2006-10-05 22:40 ` Jeremy Fitzhardinge
2006-10-05 21:51 ` Tim Chen
2006-10-06 16:11 ` Andrew James Wade
2006-10-06 4:06 Ananiev, Leonid I
2006-10-10 21:05 Ananiev, Leonid I
2006-10-10 21:17 ` Steven Rostedt
2006-10-10 21:41 ` Roland Dreier
2006-10-10 22:59 ` Jeremy Fitzhardinge
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