On Friday, July 12, 2013 03:45:17 AM Srivatsa S. Bhat wrote: > > Hi,
Hi, > Commit a66b2e (cpufreq: Preserve sysfs files across suspend/resume) caused > some subtle regressions in the cpufreq subsystem during suspend/resume. > This patchset is aimed at rectifying those problems, by fixing the regression > as well as achieving the original goal of that commit in a proper way. > > 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 that 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 sysfs 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 fine 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 stable) > b. applying all the commits > > (Note: I had to use Michael's fix[1] to avoid CPU hotplug deadlock while > testing this patchset. Though that patch also touches cpufreq subsystem, it > doesn't affect this patchset in any way and there is absolutely no dependency > between the two in terms of code. That fix just makes basic CPU hotplug work > without locking up on current mainline). > > [1]. https://lkml.org/lkml/2013/7/10/611 > > > Thank you very much! Thanks Srivatsa! I'm going to take [1/8] for 3.11 and queue up the rest for 3.12 if people don't hate them. This way we'll have some more testing coverage before they reach the mainline hopefully. Thanks, Rafael -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
