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From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: arun@linux.vnet.ibm.com
Cc: linux-arch@vger.kernel.org, Gautham R Shenoy <ego@in.ibm.com>,
	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>,
	linux-kernel@vger.kernel.org, Paul Mackerras <paulus@samba.org>,
	Ingo Molnar <mingo@elte.hu>,
	linuxppc-dev@lists.ozlabs.org
Subject: Re: [v7 PATCH 0/7]: cpuidle/x86/POWER: Cleanup idle power management code in x86, cleanup drivers/cpuidle/cpuidle.c and introduce cpuidle to POWER.
Date: Tue, 06 Oct 2009 20:04:39 +0200	[thread overview]
Message-ID: <1254852279.17055.2.camel@laptop> (raw)
In-Reply-To: <20091006163521.GA10425@linux.vnet.ibm.com>

On Tue, 2009-10-06 at 22:05 +0530, Arun R Bharadwaj wrote:

> Also, the per-cpu nature of registration/unregistration of cpuidle
> has been maintained as ACPI needs this.

Right, so can't we ditch that and have acpi default to the lowest common
C-state and warn when various cpus report different C-states?

WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: arun@linux.vnet.ibm.com
Cc: Joel Schopp <jschopp@austin.ibm.com>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@elte.hu>,
	Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>,
	Dipankar Sarma <dipankar@in.ibm.com>,
	Balbir Singh <balbir@in.ibm.com>,
	Gautham R Shenoy <ego@in.ibm.com>,
	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>,
	linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	linux-arch@vger.kernel.org
Subject: Re: [v7 PATCH 0/7]: cpuidle/x86/POWER: Cleanup idle power management code in x86, cleanup drivers/cpuidle/cpuidle.c and introduce cpuidle to POWER.
Date: Tue, 06 Oct 2009 20:04:39 +0200	[thread overview]
Message-ID: <1254852279.17055.2.camel@laptop> (raw)
Message-ID: <20091006180439.HWplj2TbMMVlldI4zx74AIYBSeU69vM81x7hnc2qALQ@z> (raw)
In-Reply-To: <20091006163521.GA10425@linux.vnet.ibm.com>

On Tue, 2009-10-06 at 22:05 +0530, Arun R Bharadwaj wrote:

> Also, the per-cpu nature of registration/unregistration of cpuidle
> has been maintained as ACPI needs this.

Right, so can't we ditch that and have acpi default to the lowest common
C-state and warn when various cpus report different C-states?




  reply	other threads:[~2009-10-06 18:04 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-06 15:24 [v7 PATCH 0/7]: cpuidle/x86/POWER: Cleanup idle power management code in x86, cleanup drivers/cpuidle/cpuidle.c and introduce cpuidle to POWER Arun R Bharadwaj
2009-10-06 15:24 ` Arun R Bharadwaj
2009-10-06 15:24 ` Arun R Bharadwaj
2009-10-06 15:26 ` [v7 PATCH 1/7]: cpuidle: cleanup drivers/cpuidle/cpuidle.c Arun R Bharadwaj
2009-10-06 15:26   ` Arun R Bharadwaj
2009-10-06 15:26   ` Arun R Bharadwaj
2009-10-06 15:30 ` [v7 PATCH 2/7]: cpuidle: implement a list based approach to register a set of idle routines Arun R Bharadwaj
2009-10-06 15:30   ` Arun R Bharadwaj
2009-10-06 15:30   ` Arun R Bharadwaj
2009-10-06 15:31 ` [v7 PATCH 3/7]: x86: refactor x86 idle power management code and remove all instances of pm_idle Arun R Bharadwaj
2009-10-06 15:31   ` Arun R Bharadwaj
2009-10-06 15:31   ` Arun R Bharadwaj
2009-10-07 14:45   ` Peter Zijlstra
2009-10-07 14:45     ` Peter Zijlstra
2009-10-07 16:45     ` Arun R Bharadwaj
2009-10-07 16:45       ` Arun R Bharadwaj
2009-10-08  5:54     ` Arun R Bharadwaj
2009-10-08  5:54       ` Arun R Bharadwaj
2009-10-06 15:32 ` [v7 PATCH 4/7]: POWER: enable cpuidle for POWER Arun R Bharadwaj
2009-10-06 15:32   ` Arun R Bharadwaj
2009-10-06 15:32   ` Arun R Bharadwaj
2009-10-06 15:33 ` [v7 PATCH 5/7]: pSeries/cpuidle: remove dedicate/shared idle loops, which will be moved to arch/powerpc/platforms/pseries/processor_idle.c Arun R Bharadwaj
2009-10-06 15:33   ` Arun R Bharadwaj
2009-10-06 15:33   ` Arun R Bharadwaj
2009-10-06 15:34 ` [v7 PATCH 6/7]: POWER: add a default_idle idle loop for POWER Arun R Bharadwaj
2009-10-06 15:34   ` Arun R Bharadwaj
2009-10-06 15:34   ` Arun R Bharadwaj
2009-10-06 15:35 ` [v7 PATCH 7/7]: pSeries: implement pSeries processor idle module Arun R Bharadwaj
2009-10-06 15:35   ` Arun R Bharadwaj
2009-10-06 15:35   ` Arun R Bharadwaj
2009-10-07 13:50   ` Arun R Bharadwaj
2009-10-07 13:50     ` Arun R Bharadwaj
2009-10-07 13:50     ` Arun R Bharadwaj
2009-10-06 16:35 ` [v7 PATCH 0/7]: cpuidle/x86/POWER: Cleanup idle power management code in x86, cleanup drivers/cpuidle/cpuidle.c and introduce cpuidle to POWER Arun R Bharadwaj
2009-10-06 16:35   ` Arun R Bharadwaj
2009-10-06 16:35   ` Arun R Bharadwaj
2009-10-06 18:04   ` Peter Zijlstra [this message]
2009-10-06 18:04     ` Peter Zijlstra
2009-10-07 11:26     ` Vaidyanathan Srinivasan
2009-10-07 11:26       ` Vaidyanathan Srinivasan
2009-10-07 11:47       ` Balbir Singh
2009-10-07 11:47         ` Balbir Singh
2009-10-07 13:24         ` Peter Zijlstra
2009-10-07 13:24           ` Peter Zijlstra
2009-10-07 13:05       ` Peter Zijlstra
2009-10-07 13:05         ` Peter Zijlstra
2009-10-07 13:05         ` Peter Zijlstra
2009-10-07 13:05         ` Peter Zijlstra

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