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From: Rusty Russell <rusty@rustcorp.com.au>
To: Ingo Molnar <mingo@elte.hu>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	linux-kernel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Mike Travis <travis@sgi.com>
Subject: Re: [git pull] cpus4096 fixes
Date: Mon, 28 Jul 2008 10:53:57 +1000	[thread overview]
Message-ID: <200807281053.58267.rusty@rustcorp.com.au> (raw)
In-Reply-To: <20080727190601.GA764@elte.hu>

On Monday 28 July 2008 05:06:01 Ingo Molnar wrote:
> Linus,
>
> Please pull the latest cpus4096-fixes git tree from:
>
>    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git
> cpus4096
>
> this fixes the cpumask_of_cpu API fallout described here:
>
>    http://lkml.org/lkml/2008/7/23/76
>
> ... and the fix is wider than i'd like it to be, so close to -rc1

Sorry, it's wider because you pushed the last stupid Mike patch.  Over my 
(obviously too-polite) objections.  Most of this is reverting that, just 
without actually admitting it.

> - but 
> it's the cleanest one and it has Rusty's ack as well.

Not really.  As authored, I intended it as a bandaid for systems with small 
CPU numbers.  Mike made it always on (tho __initdata on large x86 systems), 
which IMHO is insane (2MB of initdata?).

Mike: I now think the right long-term answer is Linus' dense cpumap idea + a 
convenience allocator for cpumasks.  We sweep the kernel for all on-stack 
vars and replace them with one or the other.  Thoughts?

Rusty.

  parent reply	other threads:[~2008-07-28  0:54 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-27 19:06 [git pull] cpus4096 fixes Ingo Molnar
2008-07-27 20:15 ` Linus Torvalds
2008-07-27 21:03   ` Ingo Molnar
2008-07-28 18:42     ` Mike Travis
2008-07-27 21:05   ` Al Viro
2008-07-27 22:17     ` Linus Torvalds
2008-07-28  0:42   ` Rusty Russell
2008-07-28  3:06     ` Andrew Morton
2008-07-28  6:34       ` Rusty Russell
2008-07-28  6:58         ` Nick Piggin
2008-07-28  7:56         ` Ingo Molnar
2008-07-28 18:12         ` Mike Travis
2008-07-28  8:33     ` Ingo Molnar
2008-07-28 18:07       ` Mike Travis
2008-07-28 17:50     ` Mike Travis
2008-07-28 18:32       ` Linus Torvalds
2008-07-28 18:37         ` Linus Torvalds
2008-07-28 18:51           ` Ingo Molnar
2008-07-28 19:22             ` Mike Travis
2008-07-28 19:31               ` Mike Travis
2008-07-28 19:04         ` Mike Travis
2008-07-28 20:57         ` [rfc git pull] cpus4096 fixes, take 2 Ingo Molnar
2008-07-28 21:35           ` Ingo Molnar
2008-07-28 21:41             ` [build error] drivers/char/pcmcia/ipwireless/hardware.c:571: error: invalid use of undefined type 'struct ipw_network' Ingo Molnar
2008-07-28 22:06               ` Ingo Molnar
2008-07-28 22:20                 ` Andrew Morton
2008-07-28 22:29                   ` Ingo Molnar
2008-07-30 14:59               ` David Sterba
2008-07-30 15:11                 ` James Bottomley
2008-07-30 15:14                   ` Jiri Kosina
2008-07-28 21:36           ` [rfc git pull] cpus4096 fixes, take 2 Mike Travis
2008-07-29  1:45           ` Rusty Russell
2008-07-29 12:11             ` Ingo Molnar
2008-07-30  0:15               ` Rusty Russell
2008-07-28 18:46     ` [git pull] cpus4096 fixes Mike Travis
2008-07-28 19:13       ` Ingo Molnar
2008-07-29  1:33       ` Rusty Russell
2008-07-28  0:53 ` Rusty Russell [this message]
2008-07-28  8:16   ` Ingo Molnar
2008-07-28 13:21     ` Rusty Russell
2008-07-28 18:23       ` Mike Travis
2008-07-31 10:30       ` Ingo Molnar
2008-07-28  8:43   ` Ingo Molnar

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