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Date: Tue, 15 Jan 2002 14:34:02 -0500
From: Pavel Machek <pavel@suse.cz>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-kernel@vger.kernel.org, akpm@zip.com.au, mingo@redhat.com,
       mochel@osdl.org
Subject: Re: [PATCH] Hotplug CPUs for i386 2.5.44
Message-ID: <20020115193356.GE2015@zaurus>
References: <20021028080437.DE7112C0E3@lists.samba.org>
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Hi!

> Usage:
> 1) Apply patch, and boot resulting kernel.
> 2) echo 0 > /devices/root/sys/cpu0/online
> 3) echo 1 > /devices/root/sys/cpu0/online
> 
> The CPU actually spins with interrupts off, doing cpu_relax() and
> polling a variable.  It's basically useful for testing the unplug
> infrastructure and benchmarking.

Hehe, with this swsusp should be doable on
an smp machine (turn it into UP and suspend;
during resume, turn it into UP, resume, and go
back SMP). I guess I schould get some SMP
to play with...
			Pavel
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