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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>,
	vatsa@in.ibm.com, ck list <ck@vds.kolivas.org>,
	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
Date: Mon, 26 Dec 2005 21:03:19 +0100	[thread overview]
Message-ID: <20051226200319.GA3476@isilmar.linta.de> (raw)
In-Reply-To: <20051226025525.GA6697@thunk.org>

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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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  parent reply	other threads:[~2005-12-26 20:03 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-12-20 16:10 [PATCH] i386 No Idle HZ aka dynticks 051221 Con Kolivas
2005-12-20 17:27 ` Jan De Luyck
2005-12-20 19:39   ` Daniel Petrini
2005-12-20 20:46     ` Jan De Luyck
2005-12-25 17:16 ` Theodore Ts'o
2005-12-26  2:55   ` Theodore Ts'o
2005-12-26 18:47     ` Matthew Garrett
2005-12-26 18:56     ` Theodore Ts'o
2005-12-26 20:03     ` Dominik Brodowski [this message]
2005-12-26 20:38     ` Pavel Machek
2005-12-26 22:52       ` Theodore Ts'o
2005-12-26 23:27         ` Pavel Machek
2005-12-27 14:03           ` Pavel Machek
2005-12-27 14:22             ` C4 strangeness [was Re: [PATCH] i386 No Idle HZ aka dynticks 051221] Pavel Machek
2005-12-27 15:33               ` C4 non-strangeness [was: " Dominik Brodowski
2005-12-27 16:13                 ` Pavel Machek
2005-12-26 22:19     ` [PATCH] i386 No Idle HZ aka dynticks 051221 Dominik Brodowski
2005-12-27  0:33       ` Theodore Ts'o

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