Messages in this thread | | | Subject | Re: [PATCH v4] sched: Provide USF for the portable equipment. | From | Randy Dunlap <> | Date | Tue, 4 Aug 2020 08:41:27 -0700 |
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On 8/4/20 12:50 AM, Dongdong Yang wrote: > From: Dongdong Yang <yangdongdong@xiaomi.com> > > --- > > diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu > index b555df8..e299418 100644 > --- a/Documentation/ABI/testing/sysfs-devices-system-cpu > +++ b/Documentation/ABI/testing/sysfs-devices-system-cpu > @@ -614,3 +614,51 @@ Description: SPURR ticks for cpuX when it was idle. > > This sysfs interface exposes the number of SPURR ticks > for cpuX when it was idle. > + > +What: /sys/devices/system/cpu/sched_usf > + /sys/devices/system/cpu/sched_usf/sched_usf_non_ux_r > + /sys/devices/system/cpu/sched_usf/sched_usf_up_l0_r > + /sys/devices/system/cpu/sched_usf/sched_usf_down_r > +Date: Aug 2020 > +Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> > +Description: User Sensitive Feedback factor auxiliary scheduling which > + is providing more utils adjustment settings to the high level > + by scenario identification.
what is "utils"?
> + sched_usf_non_ux_r: > + The ratio of utils is cut down on screen off. The
same question.
> + default value is 0, which no util is adjusted on sugov
what is "sugov"?
> + calculating utils to select cpufreq. Its range is > + [-100 , 0]. If its value falls into [-50, 0), the half > + of utils, which calculates cpufreq, shall be cut down. > + If its value falls into [-100, -50), only a quarter of > + utils are left to continue to calculate cpufreq. > + It is expected to be set [-100, 0) once enter into the > + identificated scenario, such as listen to music on
^^^^^^^^^^^^^ not a word.
> + screen off, and recover to 0 on out of the scenario, > + such as screen on. > + > + sched_usf_up_l0_r: > + The ratio of utils is boost up on screen on. The > + default value is 0, which no util is adjusted on sugov > + calculates utils to select cpufreq. Its range is [0 , 100]. > + If its value falls into (0, 50], a quarter of extra utils, > + which calculate cpufreq, shall be added. If its value > + falls into (50, 100], the half of extra utils are added > + to continue to calculate cpufreq. > + It is expected to be set (0, 100] once enter into the > + identificated scenario, such as browsing videolet on
what is "videolet"?
> + screen on, and recover to 0 on out of the scenario, > + such as screen off or videolet into background. > + > + sched_usf_down_r: > + The ratio of utils is cut down on screen on. The > + default value is 0, which no util is adjusted on sugov > + calculating utils to select cpufreq. Its range is > + [-100 , 0]. If its value falls into [-50, 0), the half > + of utils, which calculate cpufreq, shall be cut down. > + If its value falls into [-100, -50), only a quarter of > + utils are left to continue to calculate cpufreq. > + It is expected to be set [-100, 0) once enter into the > + identificated scenario, such as browsing videolet on > + screen on, and recover to 0 on out of the scenario, > + such as screen off or vidolet into background.
-- ~Randy
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