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Date: Thu, 19 Sep 2002 20:04:09 +0200
From: Andrea Arcangeli <andrea@suse.de>
To: Vojtech Pavlik <vojtech@suse.cz>
Cc: James Cleverdon <jamesclv@us.ibm.com>,
       "David S. Miller" <davem@redhat.com>, alan@lxorguk.ukuu.org.uk,
       ak@suse.de, linux-kernel@vger.kernel.org, johnstul@us.ibm.com,
       anton.wilson@camotion.com
Subject: Re: do_gettimeofday vs. rdtsc in the scheduler
Message-ID: <20020919180409.GG1345@dualathlon.random>
References: <p73vg54tjpl.fsf@oldwotan.suse.de> <1032298092.20498.21.camel@irongate.swansea.linux.org.uk> <20020917.141806.49377410.davem@redhat.com> <200209171502.04524.jamesclv@us.ibm.com> <20020918084022.A67562@ucw.cz>
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On Wed, Sep 18, 2002 at 08:40:22AM +0200, Vojtech Pavlik wrote:
> The point here is: You don't need a synchronized bus clock. You don't
> need synchronized CPU clocks. You need a synchronized system-wide clock
> that doesn't drive any bus or CPU, just a simple counter in every CPU
> that you can read from inside the CPU. You can pull that pretty far and

Exactly.

Andrea
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