From: Andrew Morton <akpm@osdl.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Linus Torvalds <torvalds@osdl.org>, Dave Jones <davej@redhat.com>,
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: Sat, 26 Aug 2006 15:25:00 -0700 [thread overview]
Message-ID: <20060826152500.34f56d01.akpm@osdl.org> (raw)
In-Reply-To: <20060826220525.GA27933@elte.hu>
On Sun, 27 Aug 2006 00:05:25 +0200
Ingo Molnar <mingo@elte.hu> wrote:
>
> * 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?
>
Would be logical, but we would want to avoid making CONFIG_HOTPLUG_CPU a
requirement for SMP.
next prev parent reply other threads:[~2006-08-26 22:25 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
2006-08-26 22:25 ` Andrew Morton [this message]
2006-08-28 2:37 ` Srivatsa Vaddagiri
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