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Groups > linux.kernel > #1504307
| From | Tim Walberg <twalberg@comcast.net> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: 4.8.1 regression with cpufreq governors |
| Date | 2016-10-19 22:10 +0200 |
| Message-ID | <su5lv-644-1@gated-at.bofh.it> (permalink) |
| References | <stqV3-2Vn-1@gated-at.bofh.it> <stJO3-7sS-45@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
This indeed turned out to be the fix. On 10/18/2016 23:10 +0200, Rafael J. Wysocki wrote: >> On Monday, October 17, 2016 07:46:06 PM Tim Walberg wrote: >> > May or may not be related to similar reports, but here's what I've just observed >> > on my system. Built a stock kernel from tags/v4.8.1, relevant cpufreq bits: >> > >> > CONFIG_ACPI_CPU_FREQ_PSS=y >> > CONFIG_CPU_FREQ=y >> > CONFIG_CPU_FREQ_GOV_ATTR_SET=y >> > CONFIG_CPU_FREQ_GOV_COMMON=y >> > CONFIG_CPU_FREQ_STAT=y >> > CONFIG_CPU_FREQ_STAT_DETAILS=y >> > # CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set >> > # CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set >> > # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set >> > # CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set >> > CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE=y >> > # CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL is not set >> > CONFIG_CPU_FREQ_GOV_PERFORMANCE=y >> > CONFIG_CPU_FREQ_GOV_POWERSAVE=m >> > CONFIG_CPU_FREQ_GOV_USERSPACE=m >> > CONFIG_CPU_FREQ_GOV_ONDEMAND=m >> > CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y >> > CONFIG_CPU_FREQ_GOV_SCHEDUTIL=m >> > # CONFIG_X86_PCC_CPUFREQ is not set >> > CONFIG_X86_ACPI_CPUFREQ=m >> > CONFIG_X86_ACPI_CPUFREQ_CPB=y >> > >> > >> > Conservative is set as default governer, yet when boot completes, all CPUs are >> > pegged at the highest frequency. Changing governor to powersave knocks them all >> > down to the lowest available frequency. Putting them back on conservative (or >> > ondemand) results in no change in frequency, despite generating load. Switching >> > to performance of course kicks them back up to high frequency. Basically, the >> > governors don't seem to be ... governing. >> >> The "convervative" governor issue seems to be the one fixed recently >> (http://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.git/commit/?h=pm-cpufreq&id=abb6627910a1e783c8e034b35b7c80e5e7f98f41). >> >> I'm not sure why "ondemand" behaves incorrectly for you though. >> >> Thanks, >> Rafael End of included message -- twalberg@gmail.com, twalberg@comcast.net
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4.8.1 regression with cpufreq governors Tim Walberg <twalberg@comcast.net> - 2016-10-18 03:00 +0200
Re: 4.8.1 regression with cpufreq governors "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-10-18 23:10 +0200
Re: 4.8.1 regression with cpufreq governors Viresh Kumar <viresh.kumar@linaro.org> - 2016-10-19 16:20 +0200
Re: 4.8.1 regression with cpufreq governors Tim Walberg <twalberg@comcast.net> - 2016-10-19 22:10 +0200
Re: 4.8.1 regression with cpufreq governors Viresh Kumar <viresh.kumar@linaro.org> - 2016-10-20 05:30 +0200
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