https://bugzilla.kernel.org/show_bug.cgi?id=77201 --- Comment #31 from Viresh Kumar <viresh.kumar@xxxxxxxxxx> --- Hi, Thanks for your efforts !! We couldn't get the complete picture as there are just too many prints wanting to fit on screen :) Can you try this to get the right set of prints for us, that way we might be able to focus in the right direction: - Remove all pr_debug() lines from powernow-k8 driver - And apply attached patch for cpufreq core, only reducing number of print messages. (Rebased over 3.15) And then give us another screenshot.. Also some queries about your current logs: - I hope this was the last message you saw on screen and it just became unresponsive? freq_table: target index is 0, freq is:2200000 kHz and the expected ones after this are: powernow_k8: targ: cpu 0, 2200000 kHz, min 800000, max 2200000 powernow_k8: targ: curr fid 0x8, vid 0x15 powernow_k8: cpu 0 transition to index 0 powernow_k8: table matched fid 0xe, giving vid 0x12 powernow_k8: cpu 0, changing to fid 0xe, vid 0x12 So, it looks like the CPU did came back and something happened while changing freq to max. Somehow this problem is related to something special being done in your driver. We don't see this problem otherwise for other platforms. One thing i could figure out is scheduling a *work* for changing frequencies but I am not sure if the problem is related to that.. I tried to have a look at what changed between 3.13.8 and 3.14, and couldn't figure out anything special that might end up in this issue :( If you couldn't get anything conclusive with above tests then there might be some chances that it *isn't* related to cpufreq and some other changes in kernel are responsible. The best we can try is: get only cpufreq back to the old state, i.e. 3.13.8, by reverting commits and try again.. few reverts were required for this and to simplify your work I have created a branch with all reverts required. git://git.linaro.org/people/viresh.kumar/mylinux.git powernow-k8-debugging NOTE: We can still see some diff this way: git diff v3.13.8..powernow-k8-debugging -- drivers/cpufreq/ -- include/linux/cpufreq.h But there shouldn't be any *functional* change for cpufreq.c/governors/freq-table.c/powernow-k8 drivers and all cpufreq files do compile.. (haven't tried compiling powernow-k8).. Let me know if this solves your problem or make it worst :) -- You are receiving this mail because: You are the assignee for the bug. -- 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
