On 07/12/2013 04:03 AM, Rafael J. Wysocki wrote: > 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. >
Sounds great! Thanks a lot Rafael! Regards, Srivatsa S. Bhat -- 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/
