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From: Ingo Molnar <mingo@elte.hu>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Dave Jones <davej@redhat.com>, Andrew Morton <akpm@osdl.org>,
	ego@in.ibm.com, rusty@rustcorp.com.au,
	linux-kernel@vger.kernel.org, arjan@intel.linux.com,
	vatsa@in.ibm.com, dipankar@in.ibm.com, ashok.raj@intel.com
Subject: Re: [RFC][PATCH 0/4] Redesign cpu_hotplug locking.
Date: Sun, 27 Aug 2006 00:05:25 +0200	[thread overview]
Message-ID: <20060826220525.GA27933@elte.hu> (raw)
In-Reply-To: <Pine.LNX.4.64.0608261404350.11811@g5.osdl.org>


* Linus Torvalds <torvalds@osdl.org> wrote:

> I personally doubt that it's the case that we'd want to accelerate 
> inclusion - very few things actually do CPU hotplug, and right now the 
> only way to even hit the sequences in normal use is literally just the 
> "suspend under SMP" case that hasn't historically worked very well 
> anyway, but was what made at least me personally aware of the problems 
> ;^).

there's also bootup on SMP that is technically a series of hot-cpu-add 
events. That already tests some aspects of it. Maybe we should turn 
shutdown into the logical reverse: into a series of hot-cpu-remove 
events?

	Ingo

  parent reply	other threads:[~2006-08-26 22:13 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-08-24 10:26 Gautham R Shenoy
2006-08-24 10:34 ` Ingo Molnar
2006-08-24 11:27   ` Gautham R Shenoy
2006-08-24 11:24     ` Ingo Molnar
2006-08-24 16:17 ` Andrew Morton
2006-08-25  9:50   ` Dave Jones
2006-08-26 21:09     ` Linus Torvalds
2006-08-26 22:04       ` Andrew Morton
2006-08-27  6:11         ` Dipankar Sarma
2006-08-27  6:46           ` Andrew Morton
2006-08-27  7:11             ` Dipankar Sarma
2006-08-27  7:42               ` Andrew Morton
2006-08-27  8:57                 ` Nick Piggin
2006-08-27 11:06                 ` Dipankar Sarma
2006-08-27 17:21                   ` Andrew Morton
2006-08-27 17:49                     ` Dipankar Sarma
2006-08-27 18:01                       ` Andrew Morton
2006-08-27  7:37             ` Dipankar Sarma
2006-08-27  7:57               ` Andrew Morton
2006-08-26 22:05       ` Ingo Molnar [this message]
2006-08-26 22:25         ` Andrew Morton
2006-08-28  2:37   ` Srivatsa Vaddagiri

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