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From: "Martin J. Bligh" <mbligh@aracnet.com>
To: Erich Focht <efocht@ess.nec.de>
Cc: Michael Hohnbaum <hohnbaum@us.ibm.com>,
	mingo@redhat.com, habanero@us.ibm.com,
	linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net
Subject: Re: NUMA scheduler  (was: 2.5 merge candidate list 1.5)
Date: Mon, 28 Oct 2002 08:57:21 -0800	[thread overview]
Message-ID: <524720000.1035824241@flay> (raw)
In-Reply-To: <200210281734.41115.efocht@ess.nec.de>

> The pool data is needed to be able to loop over the CPUs of one node,
> only. I'm convinced we'll need to do that sometime, no matter how simple
> the core of the NUMA scheduler is.

Hmmm ... is using node_to_cpumask from the topology stuff, then looping
over that bitmask insufficient?
 
> The pool_lock is protecting that data while it is built. This can happen
> in future more often, if somebody starts hotplugging CPUs.

Heh .... when someone actually does that, we'll have a lot more problems
than just this to solve. Would be nice to keep this stuff simple for now, if 
possible.

> Sorry, the comment came from a former version...

No problem, I suspected that was all it was.
 
>> just block). If you really still need to do this, RCU is now
>> in the kernel ;-) If not, can we just chuck all that stuff?
> 
> I'm preparing a core patch which doesn't need the pool_lock. I'll send it
> out today.

Cool! Thanks,

M.


  reply	other threads:[~2002-10-28 16:56 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-10-23 21:26 Crunch time -- the musical. (2.5 merge candidate list 1.5) Rob Landley
2002-10-24 16:17 ` Michael Hohnbaum
     [not found]   ` <200210240750.09751.landley@trommello.org>
2002-10-24 19:01     ` Michael Hohnbaum
2002-10-24 21:51       ` Erich Focht
2002-10-24 22:38         ` Martin J. Bligh
2002-10-25  8:15           ` Erich Focht
2002-10-25 23:26             ` Martin J. Bligh
2002-10-25 23:45               ` Martin J. Bligh
2002-10-26  0:02               ` Martin J. Bligh
2002-10-26 18:58             ` Martin J. Bligh
2002-10-26 19:14             ` NUMA scheduler (was: 2.5 " Martin J. Bligh
2002-10-27 18:16               ` Martin J. Bligh
2002-10-28  0:32                 ` Erich Focht
2002-10-27 23:52                   ` Martin J. Bligh
2002-10-28  0:55                     ` [Lse-tech] " Michael Hohnbaum
2002-10-28  4:23                       ` Martin J. Bligh
2002-10-28  0:31                   ` Martin J. Bligh
2002-10-28 16:34                     ` Erich Focht
2002-10-28 16:57                       ` Martin J. Bligh [this message]
2002-10-28 17:26                         ` Erich Focht
2002-10-28 17:35                           ` Martin J. Bligh
2002-10-29  0:07                             ` [Lse-tech] " Erich Focht
2002-10-28  0:46                   ` Martin J. Bligh
2002-10-28 17:11                     ` Erich Focht
2002-10-28 18:32                       ` Martin J. Bligh
2002-10-28 17:38                     ` Erich Focht
2002-10-28 17:36                       ` Martin J. Bligh
2002-10-28 23:49                         ` Erich Focht
2002-10-29  0:00                           ` Martin J. Bligh
2002-10-29  1:12                             ` Gerrit Huizenga
2002-10-29 22:39                         ` Erich Focht
2002-10-28  7:16                   ` Martin J. Bligh
2002-10-25 14:46 ` Crunch time -- the musical. (2.5 " Kevin Corry

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