From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Srivatsa S. Bhat" Subject: Re: [PATCH 0/8] Cpufreq, cpu hotplug, suspend/resume related fixes Date: Mon, 15 Jul 2013 14:13:49 +0530 Message-ID: <51E3B645.8070705@linux.vnet.ibm.com> References: <20130711221419.547.69781.stgit@srivatsabhat.in.ibm.com> <51E3B262.6030005@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from e28smtp07.in.ibm.com ([122.248.162.7]:49712 "EHLO e28smtp07.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754529Ab3GOIr0 (ORCPT ); Mon, 15 Jul 2013 04:47:26 -0400 Received: from /spool/local by e28smtp07.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 15 Jul 2013 14:09:39 +0530 In-Reply-To: <51E3B262.6030005@intel.com> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Lan Tianyu Cc: rjw@sisk.pl, viresh.kumar@linaro.org, toralf.foerster@gmx.de, robert.jarzmik@intel.com, durgadoss.r@intel.com, lantianyu1986@gmail.com, dirk.brandewie@gmail.com, stern@rowland.harvard.edu, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org On 07/15/2013 01:57 PM, Lan Tianyu wrote: > On 2013=E5=B9=B407=E6=9C=8812=E6=97=A5 06:15, Srivatsa S. Bhat wrote: >> >> Hi, >> >> Commit a66b2e (cpufreq: Preserve sysfs files across suspend/resume) = caused >> some subtle regressions in the cpufreq subsystem during suspend/resu= me. >> This patchset is aimed at rectifying those problems, by fixing the r= egression >> as well as achieving the original goal of that commit in a proper wa= y. >> >> Patch 1 reverts the above commit, and is CC'ed to stable. >> >> Patches 2 - 5 reorganize the code and have no functional impact, and= can go >> in as general cleanups as well. This reorganization builds a base th= at the >> rest of the patches will make use of. >> >> Patch 6 and 7 add a mechanism to perform light-weight init/tear-down= of CPUs >> in the cpufreq subsystem and finally patch 8 uses it to preserve sys= fs files >> across suspend/resume. >> >> All the patches apply on current mainline. >> >> >> Robert, Durgadoss, it would be great if you could try it out and see= if it works >> well for your usecase. I tested it locally and cpufreq related files= did retain >> their permissions across suspend/resume. Let me know if it works fin= e in your >> setup too. >> >> And I'd of course appreciate to hear from Dirk, Tianyu and Toralf to= know >> whether their systems work fine after: >> a. applying only the first commit (this is what gets backported to s= table) >> b. applying all the commits >=20 > Hi, I tested this patchset on my machine and the issue in bug 59781 h= as > been resolved. >=20 > Tested-by: Tianyu Lan >=20 Awesome! Thanks a lot! Regards, Srivatsa S. Bhat