From: Rusty Russell <rusty@rustcorp.com.au>
To: linux-kernel@vger.kernel.org
Cc: akpm@zip.com.au, mingo@redhat.com, mochel@osdl.org
Subject: [PATCH] Hotplug CPUs for i386 2.5.44
Date: Mon, 28 Oct 2002 19:04:15 +1100 [thread overview]
Message-ID: <20021028080437.DE7112C0E3@lists.samba.org> (raw)
Doesn't apply to -mm5 because someone did wierd things with the CPU
placement in driverfs, which clashes with this patch which moves it to
kernel/cpu.c...
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.
http://www.kernel.org/pub/linux/kernel/people/rusty/patches/hotcpu-x86-28-10-2002.2.5.44.diff.gz
Cheers!
Rusty.
--
Anyone who quotes me in their sig is an idiot. -- Rusty Russell.
next reply other threads:[~2002-10-28 7:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-28 8:04 Rusty Russell [this message]
2002-01-15 19:34 ` [PATCH] Hotplug CPUs for i386 2.5.44 Pavel Machek
2002-10-29 19:34 ` Matthew Dobson
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