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Date: Mon, 26 Dec 2005 21:03:19 +0100
From: Dominik Brodowski <linux@dominikbrodowski.net>
To: "Theodore Ts'o" <tytso@mit.edu>, Con Kolivas <kernel@kolivas.org>,
       linux kernel mailing list <linux-kernel@vger.kernel.org>,
       Daniel Petrini <d.pensator@gmail.com>, Tony Lindgren <tony@atomide.com>,
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       Pavel Machek <pavel@ucw.cz>, Adam Belay <abelay@novell.com>,
       Zwane Mwaikambo <zwane@arm.linux.org.uk>
Subject: Re: [PATCH] i386 No Idle HZ aka dynticks 051221
Message-ID: <20051226200319.GA3476@isilmar.linta.de>
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Hi,

On Sun, Dec 25, 2005 at 09:55:26PM -0500, Theodore Ts'o wrote:
> Looking at acpi/processor_idle.c, there is all sorts of magic special
> cases code for the C2 and C3 states (both for promotion/demotion
> polcies, as well as what to do when idling in those particular
> states), and which doesn't exist for other states, such as C4.

The magic is for C2- and C3-_type_ sleep, and C4 is of type C3... I know,
this numbering is very confusing, but that's the way it is... However, the
sepcially added "magic" for dyntick still needs some tweaking; I'll try to
improve (and hopefully streamline) it a bit. As a first test, could you
remove the "Fast-path demotion" case and re-test?

Thanks,
	Dominik

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