From: Anton Blanchard <anton@linuxcare.com.au>
To: Lars Marowsky-Bree <lmb@suse.de>
Cc: Rusty Russell <rusty@linuxcare.com.au>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Hot swap CPU support for 2.4.1
Date: Mon, 5 Feb 2001 17:06:43 +1100 [thread overview]
Message-ID: <20010205170643.A8721@linuxcare.com> (raw)
In-Reply-To: <E14PcpU-0004U1-00@halfway> <20010205065029.K430@marowsky-bree.de>
In-Reply-To: <20010205065029.K430@marowsky-bree.de>; from lmb@suse.de on Mon, Feb 05, 2001 at 06:50:29AM +0100
> Rusty, what would be needed to "hot-add" CPUs ?
The PPC version at the moment simply locks a cpu in the idle loop
with __cli(); while(1); for cpu down and jumps out of it for cpu up.
Good for testing but not very useful. After talking to paulus we
will use the RTAS cpu stop and cpu start.
In order to bring a new cpu up you will need to duplicate a lot of
the stuff in smp_boot_cpus or else just set up all NR_CPUS of these
structures (eg NR_CPUS idle threads etc) at boot time.
Anton
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next prev parent reply other threads:[~2001-02-05 6:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-02-05 4:00 [PATCH] Hot swap CPU support for 2.4.1 Rusty Russell
2001-02-05 5:50 ` Lars Marowsky-Bree
2001-02-05 6:06 ` Anton Blanchard [this message]
2001-02-05 21:19 ` [PATCH] Hot swap CPU support for 2.4.1@ lists
2001-02-06 14:17 ` Anton Blanchard
2001-02-10 23:29 ` [PATCH] Hot swap CPU support for 2.4.1 Pavel Machek
2001-02-11 23:05 ` Rusty Russell
-- strict thread matches above, loose matches on Subject: below --
2001-02-05 4:51 Frank Davis
2001-02-05 6:54 ` Rusty Russell
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