From: Linus Torvalds <torvalds@linux-foundation.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Matt Mackall <mpm@selenic.com>, Ingo Molnar <mingo@elte.hu>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
LKML <linux-kernel@vger.kernel.org>,
Christoph Lameter <clameter@sgi.com>
Subject: Re: tipc_init(), WARNING: at arch/x86/mm/highmem_32.c:52, [2.6.24-rc4-git5: Reported regressions from 2.6.23]
Date: Sat, 8 Dec 2007 10:37:23 -0800 (PST) [thread overview]
Message-ID: <alpine.LFD.0.9999.0712081034470.12046@woody.linux-foundation.org> (raw)
In-Reply-To: <20071208100950.a3547868.akpm@linux-foundation.org>
On Sat, 8 Dec 2007, Andrew Morton wrote:
>
> > So which warning is it that triggers the bogus error?
>
> It's a kmap_atomic() debugging patch which I wrote ages ago and whcih Ingo
> sucked into his tree. I don't _think_ this warning is present in your tree
> at all.
Ok, that explains it.
> Knocking out __GFP_ZERO at the point where the slab allocator(s) call the
> page allocator seems like a good approach to me.
>
> But I don't think we need to do anything for 2.6.24..
Good. Although we should perhaps look at that reported performance problem
with SLUB. It looks like SLUB will do a memclear() for the area twice
(first for the whole page, then for the thing it allocated) for the slow
case. Maybe that exacerbates the problem.
Linus
next prev parent reply other threads:[~2007-12-08 18:38 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-08 2:40 2.6.24-rc4-git5: Reported regressions from 2.6.23 Rafael J. Wysocki
2007-12-08 6:53 ` Fabio Comolli
2007-12-08 8:28 ` Ingo Molnar
2007-12-08 9:23 ` Andrew Morton
2007-12-08 22:11 ` Rafael J. Wysocki
2007-12-08 9:29 ` Andrew Morton
2007-12-08 22:17 ` Rafael J. Wysocki
2007-12-08 9:30 ` tipc_init(), WARNING: at arch/x86/mm/highmem_32.c:52, [2.6.24-rc4-git5: Reported regressions from 2.6.23] Ingo Molnar
2007-12-08 10:11 ` Andrew Morton
2007-12-08 16:37 ` Matt Mackall
2007-12-08 17:47 ` Linus Torvalds
2007-12-08 17:54 ` Linus Torvalds
2007-12-08 18:09 ` Andrew Morton
2007-12-08 18:37 ` Linus Torvalds [this message]
2007-12-08 19:52 ` Ingo Molnar
2007-12-08 20:29 ` Ingo Molnar
2007-12-09 8:20 ` Pekka Enberg
2007-12-09 8:50 ` Ingo Molnar
2007-12-09 9:18 ` Pekka Enberg
2007-12-09 11:51 ` Ingo Molnar
2007-12-09 12:34 ` Ingo Molnar
2007-12-13 22:07 ` Christoph Lameter
2007-12-09 15:59 ` Arjan van de Ven
2007-12-11 6:27 ` Dave Jones
2007-12-11 8:52 ` Ingo Molnar
2007-12-11 19:03 ` Peter Zijlstra
2007-12-14 4:07 ` Christoph Lameter
2007-12-14 7:16 ` Eric Dumazet
2007-12-14 12:49 ` Ingo Molnar
2007-12-17 19:54 ` Christoph Lameter
2007-12-09 7:58 ` Ingo Molnar
2007-12-09 14:17 ` Rafael J. Wysocki
2007-12-08 18:33 ` Matt Mackall
2007-12-08 19:00 ` Matt Mackall
2007-12-09 8:33 ` Pekka Enberg
2007-12-13 22:03 ` Christoph Lameter
2007-12-08 9:36 ` 2.6.24-rc4-git5: Reported regressions from 2.6.23 Andrew Morton
2007-12-08 10:12 ` Andreas Mohr
2007-12-08 10:20 ` Andrew Morton
2007-12-08 10:28 ` Matthew Garrett
2007-12-08 10:55 ` Andreas Mohr
2007-12-09 15:46 ` Tejun Heo
2007-12-09 19:59 ` Andreas Mohr
2007-12-09 6:52 ` Tejun Heo
2007-12-09 14:20 ` Rafael J. Wysocki
2007-12-09 15:11 ` Tejun Heo
2007-12-08 9:42 ` Andrew Morton
2007-12-08 18:57 ` Roland Dreier
2007-12-08 19:40 ` Theodore Tso
2007-12-08 19:55 ` Ingo Molnar
2007-12-08 22:30 ` Rafael J. Wysocki
2007-12-09 2:15 ` Theodore Tso
2007-12-13 10:49 ` Takashi Iwai
2007-12-20 15:42 ` Takashi Iwai
2007-12-08 9:46 ` Andrew Morton
2007-12-08 15:49 ` Alan Stern
2007-12-08 9:52 ` Andrew Morton
2007-12-09 7:00 ` Tejun Heo
2007-12-09 13:42 ` Alan Cox
2007-12-09 15:09 ` Tejun Heo
2007-12-09 15:25 ` Alan Cox
2007-12-09 15:39 ` Tejun Heo
2007-12-09 18:36 ` Linus Torvalds
2007-12-09 21:54 ` Alan Cox
2007-12-09 18:41 ` Linus Torvalds
2007-12-09 22:01 ` Alan Cox
2007-12-09 22:51 ` Ray Lee
2007-12-10 1:57 ` Linus Torvalds
2007-12-10 3:28 ` Alan Cox
2007-12-10 3:38 ` Alan Cox
2007-12-10 15:38 ` Linus Torvalds
2007-12-10 8:21 ` Ingo Molnar
2007-12-10 8:27 ` Tejun Heo
2007-12-10 8:41 ` Ingo Molnar
2007-12-08 10:44 ` Richard Purdie
2007-12-08 22:32 ` Rafael J. Wysocki
2007-12-09 11:54 ` Andrew Morton
2007-12-09 12:05 ` Ingo Molnar
2007-12-09 14:24 ` Rafael J. Wysocki
2007-12-10 20:42 ` Ingo Molnar
2007-12-10 20:57 ` Guillaume Chazarain
2007-12-10 20:59 ` Andrew Morton
2007-12-10 22:45 ` Ingo Molnar
2007-12-10 23:04 ` Ingo Molnar
2007-12-10 23:34 ` Stefano Brivio
2007-12-10 23:53 ` Guillaume Chazarain
2007-12-11 8:48 ` Ingo Molnar
2007-12-10 23:56 ` Arjan van de Ven
2007-12-11 0:01 ` Guillaume Chazarain
2007-12-11 1:06 ` Arjan van de Ven
2007-12-11 8:43 ` Ingo Molnar
2007-12-11 9:01 ` Ingo Molnar
2007-12-11 21:10 ` Stefano Brivio
2007-12-19 0:58 ` Stefano Brivio
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