From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dominik Brodowski Subject: Re: Re: [PATCHES] add _CST support Date: Thu, 23 Dec 2004 01:18:30 +0100 Message-ID: <20041223001830.GC8289@dominikbrodowski.de> References: <20041127215118.GA30309@dominikbrodowski.de> <1103698332.17318.170.camel@d845pe> <1103747852.17331.237.camel@d845pe> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1103747852.17331.237.camel@d845pe> Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Len Brown Cc: ACPI Developers , Robert Moore , Bruno Ducrot List-Id: linux-acpi@vger.kernel.org On Wed, Dec 22, 2004 at 03:37:32PM -0500, Len Brown wrote: > I removed the D600 from the port replicator, and now > it is able to run in C4 w/o any hacks: Glad to hear that. Was the port replicator causing some sort of periodic bus master activity which keeps it out of getting to C4 sleep? > So a list of things we need comes to mind: - wait and see if issues appear with the split-up and _CST addition - > Enable > C1 on SMP ... this I'd like to delay a short bit until we make the idle state algorithm a bit smarter. - > max_cstate able to disable C4 w/o disabling C3 ... see other post, suggesting max_idle_state instead - > "nocst" flag to compare FADT method w/ _CST - > bm_check code fix -- currently has no clue of HZ > a 100HZ kernel gets into C4 less than > a 1000HZ kernel, likely because of this. ... Yes, this is a bug IMHO. Also, if the idle loop hasn't been entered for one (or two? or hundred?) ticks, I think it should re-start at C1-type sleep. - > tick-less idle loop - _CSD support (depends on _OSC/_PDC framework) > ps. > I haven't been able to reproduce the rmmod processor failure, > though I did have a console log to show that I wasn't halucinating > at 2AM this morning: Hm. Did you use some cpufreq module? Will stress-test the processor module in a few hours, after I get some sleep... Thanks, Dominik ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/