From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <ak@suse.de>
Subject: Re: [RFC][PATCH] Runtime switching of the idle function [take 2]
Date: Wed, 30 Nov 2005 02:58:09 +0100
Message-ID: <20051130015809.GF19515@wotan.suse.de>
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To: Lee Revell <rlrevell@joe-job.com>
Cc: Andi Kleen <ak@suse.de>, "Brown, Len" <len.brown@intel.com>, Nick Piggin <nickpiggin@yahoo.com.au>, Ingo Molnar <mingo@elte.hu>, Steven Rostedt <rostedt@goodmis.org>, Andrew Morton <akpm@osdl.org>, acpi-devel@lists.sourceforge.net, nando@ccrma.Stanford.EDU, linux-kernel@vger.kernel.org, paulmck@us.ibm.com, kr@cybsft.com, tglx@linutronix.de, pluto@agmk.net, john.cooper@timesys.com, bene@linutronix.de, dwalker@mvista.com, trini@kernel.crashing.org, george@mvista.com, Vojtech Pavlik <vojtech@suse.cz>, johnstul@us.ibm.com
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> > Then you're likely running 32bit. It doesn't use vsyscall gettimeofday
> > yet, which makes it slower. 64bit would.
> 
> Yes, I am.  So it sounds like vsyscall gettimeofday for i386 is in the
> works?

John Stultz used to have patches for it, but for some reason he never
pushed them into mainline. On i386 it unfortunately needs adding
a test and branch to the syscall path to be 100% ABI compatible, but I 
doubt that was the reason he dropped it.

-Andi