On 8/4/20 12:50 AM, Dongdong Yang wrote:
> From: Dongdong Yang <yangdongd...@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
