linux-kernel - Re: [PATCH v2 0/7] Cpufreq, cpu hotplug, suspend/resume related fixes

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Message-ID: <2115849.jgF3cVvlvK@vostro.rjw.lan>
Date:	Tue, 30 Jul 2013 16:06:14 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
Cc:	viresh.kumar@...aro.org, toralf.foerster@....de,
	robert.jarzmik@...el.com, durgadoss.r@...el.com,
	tianyu.lan@...el.com, lantianyu1986@...il.com,
	dirk.brandewie@...il.com, stern@...land.harvard.edu,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/7] Cpufreq, cpu hotplug, suspend/resume related fixes

On Tuesday, July 30, 2013 04:23:12 AM Srivatsa S. Bhat wrote:
> 
> Hi,
> 
> This patchset reorganizes the cpufreq code and preserves the file permissions
> of cpufreq-related per-cpu sysfs files across suspend/resume cycles, by
> performing a light-weight init/teardown in those paths.
> 
> Patches 1 - 4 reorganize the code and have no functional impact, and can go
> in as general cleanups as well. This reorganization builds a base that the
> rest of the patches will make use of.
> 
> Patch 5 and 6 add a mechanism to perform light-weight init/tear-down of CPUs
> in the cpufreq subsystem and finally patch 7 uses it to preserve sysfs files
> across suspend/resume.
> 
> All the patches apply on Rafael's bleeding-edge branch on linux-pm git
> tree[1].
> 
> 
> Changes in v2:
> * Fixed a refcounting bug explained here:
>   http://marc.info/?l=linux-kernel&m=137511192600806&w=2
> 
> * Addressed some suggestions about code reorganization received in v1.
> * Rebased on top of the bleeding-edge branch.
> 
> 
> [1]. git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git bleeding-edge
> 
> Thank you very much!
> 
> 
>  Srivatsa S. Bhat (7):
>       cpufreq: Fix misplaced call to cpufreq_update_policy()
>       cpufreq: Add helper to perform alloc/free of policy structure
>       cpufreq: Extract non-interface related stuff from cpufreq_add_dev_interface
>       cpufreq: Extract the handover of policy cpu to a helper function
>       cpufreq: Introduce a flag ('frozen') to separate full vs temporary init/teardown
>       cpufreq: Preserve policy structure across suspend/resume
>       cpufreq: Perform light-weight init/teardown during suspend/resume
> 
> 
>  drivers/cpufreq/cpufreq.c       |  303 ++++++++++++++++++++++++++-------------
>  drivers/cpufreq/cpufreq_stats.c |    8 -
>  2 files changed, 205 insertions(+), 106 deletions(-)

Thanks, queued up for 3.12.

Rafael


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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