From: Andi Kleen <andi@firstfloor.org>
To: Len Brown <lenb@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
x86@kernel.org, linux-pm@lists.linux-foundation.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 8/8] intel_idle: create a native cpuidle driver for select intel processors
Date: Sun, 30 May 2010 11:20:02 +0200 [thread overview]
Message-ID: <87zkzhzqyl.fsf@basil.nowhere.org> (raw)
In-Reply-To: <alpine.LFD.2.00.1005272354100.24823@localhost.localdomain> (Len Brown's message of "Thu\, 27 May 2010 23\:57\:42 -0400 \(EDT\)")
Len Brown <lenb@kernel.org> writes:
>> ... What happens when an additional CPU is brought online?
>> It melts? ;)
>
> With the current driver, processors hot-added after modprobe
> will use C1 only, and not use deeper C-states.
I agree with Andrew that it will likely not be a lot of
effort to restructure the driver to handle cpu hotplug
properly, and it's better done from the beginning.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2010-05-30 9:20 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-27 2:42 idle-test patches queued for upstream Len Brown
2010-05-27 2:42 ` [PATCH 1/8] cpuidle: fail to register if !CONFIG_CPU_IDLE Len Brown
2010-05-27 2:42 ` [PATCH 2/8] cpuidle: add cpuidle_unregister_driver() error check Len Brown
2010-05-27 3:14 ` Andrew Morton
2010-05-27 5:11 ` [PATCH-v2 " Len Brown
2010-05-27 5:13 ` Andrew Morton
2010-05-27 5:13 ` Andrew Morton
2010-05-27 5:11 ` Len Brown
2010-05-27 3:14 ` [PATCH " Andrew Morton
2010-05-27 2:42 ` Len Brown
2010-05-27 2:42 ` [PATCH 3/8] cpuidle: make cpuidle_curr_driver static Len Brown
2010-05-27 2:42 ` Len Brown
2010-05-27 5:27 ` [PATCH-v2 " Len Brown
2010-05-27 18:40 ` Luck, Tony
2010-05-27 18:40 ` Luck, Tony
2010-05-27 23:30 ` Len Brown
2010-05-27 23:30 ` Len Brown
2010-05-27 5:27 ` Len Brown
2010-05-27 2:42 ` [PATCH 4/8] ACPI: allow a native cpuidle driver to displace ACPI Len Brown
2010-05-27 2:42 ` Len Brown
2010-05-27 2:42 ` [PATCH 5/8] sched: clarify commment for TS_POLLING Len Brown
2010-05-27 2:42 ` Len Brown
2010-05-27 5:25 ` (No subject header) Milton Miller
2010-05-27 5:25 ` Milton Miller
2010-05-27 5:47 ` Len Brown
2010-05-27 5:53 ` [PATCH-v2 5/8] sched: clarify commment for TS_POLLING Len Brown
2010-05-27 5:53 ` Len Brown
2010-05-27 2:42 ` [PATCH 6/8] acpi_pad: uses MONITOR/MWAIT, so it doesn't need to clear TS_POLLING Len Brown
2010-05-27 2:42 ` Len Brown
2010-05-27 2:42 ` [PATCH 7/8] ACPI: acpi_idle: touch TS_POLLING only in the non-MWAIT case Len Brown
2010-05-27 2:42 ` Len Brown
2010-05-27 2:42 ` [PATCH 8/8] intel_idle: create a native cpuidle driver for select intel processors Len Brown
2010-05-27 3:44 ` Andrew Morton
2010-05-27 3:44 ` Andrew Morton
2010-05-28 3:57 ` Len Brown
2010-05-28 3:57 ` Len Brown
2010-05-30 9:20 ` Andi Kleen [this message]
2010-05-30 9:20 ` Andi Kleen
2010-05-27 8:53 ` Thomas Renninger
2010-05-27 8:53 ` [linux-pm] " Thomas Renninger
2010-05-28 1:44 ` Len Brown
2010-05-28 7:46 ` Thomas Renninger
2010-05-28 17:38 ` Len Brown
2010-05-28 17:38 ` [linux-pm] " Len Brown
2010-05-28 7:46 ` Thomas Renninger
2010-05-29 4:17 ` Thomas Renninger
2010-05-29 4:17 ` [linux-pm] " Thomas Renninger
2010-05-28 1:44 ` Len Brown
2010-05-27 14:14 ` Kevin Hilman
2010-05-27 14:14 ` Kevin Hilman
2010-05-27 14:22 ` Arjan van de Ven
2010-05-27 14:22 ` Arjan van de Ven
2010-05-27 14:36 ` Kevin Hilman
2010-05-28 0:22 ` Len Brown
2010-05-28 0:22 ` Len Brown
2010-05-28 17:28 ` Kevin Hilman
2010-05-28 17:28 ` Kevin Hilman
2010-05-27 14:36 ` Kevin Hilman
2010-05-27 14:51 ` [linux-pm] " Igor Stoppa
2010-05-28 3:14 ` Arjan van de Ven
2010-05-28 17:27 ` Kevin Hilman
2010-05-28 17:27 ` [linux-pm] " Kevin Hilman
2010-05-29 0:38 ` Arjan van de Ven
2010-05-29 0:38 ` Arjan van de Ven
2010-05-28 3:14 ` Arjan van de Ven
2010-05-27 14:51 ` Igor Stoppa
2010-05-28 2:32 ` Chase Douglas
2010-05-28 2:32 ` Chase Douglas
2010-05-28 4:16 ` Len Brown
2010-05-28 15:09 ` Chase Douglas
2010-05-28 15:09 ` Chase Douglas
2010-05-28 17:43 ` Len Brown
2010-05-28 17:43 ` Len Brown
2010-05-28 19:51 ` Chase Douglas
2010-05-28 19:51 ` Chase Douglas
2010-05-28 20:14 ` Chase Douglas
2010-05-28 20:14 ` Chase Douglas
2010-05-28 4:16 ` Len Brown
2010-05-27 2:42 ` Len Brown
2010-05-27 2:42 ` [PATCH 1/8] cpuidle: fail to register if !CONFIG_CPU_IDLE Len Brown
2010-05-27 8:45 ` [linux-pm] idle-test patches queued for upstream Thomas Renninger
2010-05-28 0:59 ` Len Brown
2010-05-28 0:59 ` [linux-pm] " Len Brown
2010-05-28 8:07 ` Thomas Renninger
2010-05-28 17:42 ` Len Brown
2010-05-28 17:42 ` Len Brown
2010-05-28 8:07 ` Thomas Renninger
2010-06-16 7:53 ` [linux-pm] " Pavel Machek
2010-06-16 7:53 ` Pavel Machek
2010-05-27 8:45 ` Thomas Renninger
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