From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756245Ab3G2W45 (ORCPT ); Mon, 29 Jul 2013 18:56:57 -0400 Received: from e28smtp06.in.ibm.com ([122.248.162.6]:39138 "EHLO e28smtp06.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755023Ab3G2W4z (ORCPT ); Mon, 29 Jul 2013 18:56:55 -0400 From: "Srivatsa S. Bhat" Subject: [PATCH v2 0/7] Cpufreq, cpu hotplug, suspend/resume related fixes To: rjw@sisk.pl, viresh.kumar@linaro.org, toralf.foerster@gmx.de, robert.jarzmik@intel.com, durgadoss.r@intel.com, tianyu.lan@intel.com, lantianyu1986@gmail.com, dirk.brandewie@gmail.com Cc: stern@rowland.harvard.edu, srivatsa.bhat@linux.vnet.ibm.com, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Date: Tue, 30 Jul 2013 04:23:12 +0530 Message-ID: <20130729225213.20863.56722.stgit@srivatsabhat.in.ibm.com> User-Agent: StGIT/0.14.3 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13072922-9574-0000-0000-000008F0E08F Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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, Srivatsa S. Bhat IBM Linux Technology Center