On Monday, February 04, 2013 04:05:27 PM Dirk Brandewie wrote: > On 02/04/2013 04:09 PM, Rafael J. Wysocki wrote: > > On Monday, February 04, 2013 02:19:22 PM Dirk Brandewie wrote: > >> Hi All, > >> > >> There is a bug in the bleeding-edge branch. Using the ondemand governor > >> and acpi_cpufreq scaling driver the system hangs while trying to reboot or > >> trying to offline a cpu manually. The last call where I have tracing turned > >> on is __cpufreq_governor(data, CPUFREQ_GOV_STOP); > >> > >> [ 38.138236] __cpufreq_remove_dev: cpufreq: __cpufreq_remove_dev: > >> unregistering CPU 1 > >> [ 38.146663] __cpufreq_governor: cpufreq: __cpufreq_governor for CPU 0, event 2 > >> [ 71.562262] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen > >> > >> > >> It looks like the breakage comes from the removal of the sysfs files in the > >> incorrect order. While rebasing my patches onto bleeding edge I found this > >> problem as well. I have a couple of hack patches that workaround the issue > >> when using my driver if anyone would like to see them. > > > > There have been a few fixes since c560f3d, they are in linux-pm.git/linux-next > > now. Can you please test that tree and see if the problem is still there? > > > Rebased a couple of hours ago testing now. ATM it looks like it is related to > cpufreq_stats handling of the sysfs files Can you reproduce it without your patches? Rafael -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
