[PATCH] sched: Provide USF for the portable equipment.
From: Dongdong Yang This patch provides USF(User Sensitive Feedback factor) auxiliary cpufreq governor to support high level layer sysfs inodes setting for utils adjustment purpose from the identified scenario on portable equipment. Because the power consumption and UI response are more cared for by portable equipment users. And the "screen off" status stands for no request from the user, however, the kernel is still expected to notify the user in time on modem, network or powerkey events occur. USF provides "sched_usf_non_ux_r" sysfs inode to cut down the utils from user space tasks according to high level scenario. In addition, it usually hints more cpufreq demand that the preemptive counts of the tasks on the cpu burst and over the user expecting completed time such as the ratio sysctl_sched_latency to sysctl_sched_min_granularity on "screen on" status, which more likely with more UI. The sysfs inodes "sched_usf_up_l0_r" and "sched_usf_down_r" have been provided to adjust the utils according to high level identified scenario to alloc the cpufreq in time. Dongdong Yang (1): sched: Provide USF for portable equipment. drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/fbsched/Kconfig | 10 ++ drivers/staging/fbsched/Makefile | 2 + drivers/staging/fbsched/usf.c| 351 +++ kernel/sched/cpufreq_schedutil.c | 11 +- 6 files changed, 376 insertions(+), 1 deletion(-) create mode 100644 drivers/staging/fbsched/Kconfig create mode 100644 drivers/staging/fbsched/Makefile create mode 100644 drivers/staging/fbsched/usf.c -- 2.7.4 ___ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
[PATCH] sched: Provide USF for the portable equipment.
From: Dongdong Yang The power consumption and UI response are more cared for by the portable equipment users. USF(User Sensitive Feedback factor) auxiliary cpufreq governor is providing more utils adjustment settings to a high level by scenario identification. From the view of portable equipment, screen off status usually stands for no request from the user, however, the kernel is still expected to notify the user in time on modem, network or powerkey events occur. In some scenarios, such as listening to music, low power processors, such as DSP, take more actions and CPU load requirements cut down. It would bring more power consumption benefit if high level have interfaces to adjust utils according to the current scenario and load. In addition, the portable equipment user usually heavy interact with devices by touch, and other peripherals. The boost preemptive counts are marking the load requirement urgent, vice versa. If such feedback factor could be set to high level according to the scenario, it would contribute to the power consumption and UI response. If no USF sysfs inode is set, and no screen on or off event, adjust_task_pred_demand shall not be invoked. Once sched_usf_up_l0_r/down_r/non_ux_r be set, adjust_task_pred_demand_impl shall be called back to update settings according to high level scenario identification. We can get about 17% mean power consumption save at listening to music with speaker on "screen off" scenario, as below statistical data from 7766 XiaoMi devices for two weeks with sched_usf_non_ux_r be set: day1 day2 day3 day4 count 7766.00 7766.00 7766.00 7766.00 mean88.03552585.50028283.82930586.054997 std 111.049980 108.258834 107.562583 108.558240 min 0.099000 0.037000 0.067000 0.045000 25% 34.76550034.02175034.10150034.423000 50% 54.9555.28650054.18950054.248500 75% 95.95400093.94200091.73800094.0592500 80% 114.675000 107.43 106.378000 108.673000 85% 137.851000 129.511000 127.156500 131.750750 90% 179.669000 170.208500 164.027000 172.348000 95% 272.395000 257.845500 247.750500 263.275750 98% 399.034500 412.170400 391.484000 402.835600 day5 day6day7 day8 count 7766.00 7766.0 7766.00 7766.00 mean82.53267779.2192377.61138081.075081 std 104.870079 101.34819 103.140037 97.506221 min 0.051000 0.02900 0.007000 0.068000 25% 32.87300033.4440031.96550033.863500 50% 52.18050051.5655050.80650053.08 75% 90.90575086.8262583.85925089.973000 80% 105.455000 99.6470097.271000104.225000 85% 128.30 118.47825 116.570250 126.648250 90% 166.647500 149.18000 150.649500 161.087000 95% 247.208500 224.36050 226.38 245.291250 98% 393.002000 347.92060 369.791800 378.778600 day9 day10day11day12 count 7766.00 7766.00 7766.00 7766.00 mean79.98917083.85941778.03293077.060542 std 104.226122 108.893043 102.561715 99.844276 min 0.118000 0.017000 0.028000 0.039000 25% 32.05625033.45450031.17625030.897750 50% 51.50600054.05600048.96950049.069000 75% 88.51350092.95350083.50675084.096000 80% 102.876000 107.845000 97.71700098.073000 85% 124.363000 128.288000 118.366500 116.869250 90% 160.557000 167.084000 154.342500 148.187500 95% 231.149000 242.925750 236.759000 228.131250 98% 367.206600 388.619100 385.269100 376.541600 day13day14 count 7766.00 7766.00 mean75.52803673.702878 std 90.75059486.796016 min 0.066000 0.054000 25% 31.17050031.608500 50% 48.75850049.215000 75% 84.52275083.053000 80% 97.87900094.875000 85% 116.680250 113.573750 90% 149.083500 144.089500 95% 226.177750 211.488750 98% 347.011100 331.317100 Signed-off-by: Dongdong Yang Signed-off-by: Jun Tao Signed-off-by: Qiwu Huang Signed-off-by: Geliang Tang Signed-off-by: Peng Wang --- drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/fbsched/Kconfig | 10 ++ drivers/staging/fbsched/Makefile | 2 + drivers/staging/fbsched/usf.c| 351 +++ kernel/sched/cpufreq_schedutil.c | 11 +- 6 files changed, 376 insertions(+), 1 deletion(-) create mode 100644 drivers/staging/fbsched/Kconfig create mode 100644 drivers/staging/fbsched/Makefile create mode 100644 drivers/staging/fbsched/usf.c diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 4ec5528..05b231e 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -12
[PATCH v2] sched: Provide USF for the portable equipment.
From: Dongdong Yang The power consumption and UI response are more cared for by the portable equipment users. USF(User Sensitive Feedback factor) auxiliary cpufreq governor is providing more utils adjustment settings to the high level by scenario identification. From the view of portable equipment, screen off status usually stands for no request from the user, however, the kernel is still expected to notify the user in time on modem, network or powerkey events occur. In some scenarios, such as listening to music, low power processors, such as DSP, take more actions and CPU load requirements cut down. It would bring more power consumption benefit if high level have interfaces to adjust utils according to the current scenario and load. In addition, the portable equipment user usually heavily interact with devices by touch, and other peripherals. The boost preemptive counts are marking the load requirement urgent, vice versa. If such feedback factor could be set to high level according to the scenario, it would contribute to the power consumption and UI response. If no USF sysfs inode is set, and no screen on or off event, adjust_task_pred_demand shall not be invoked. Once sched_usf_up_l0_r sched_usf_down_r or sched_usf_non_ux_r be set, adjust_task_pred_demand shall be called back to update settings according to high level scenario identification. We can get about 17% mean power consumption save at listening to music with speaker on "screen off" scenario, as below statistical data from 7766 XiaoMi devices for two weeks with sched_usf_non_ux_r be set: day1 day2 day3 day4 count 7766.00 7766.00 7766.00 7766.00 mean88.03552585.50028283.82930586.054997 std 111.049980 108.258834 107.562583 108.558240 min 0.099000 0.037000 0.067000 0.045000 25% 34.76550034.02175034.10150034.423000 50% 54.9555.28650054.18950054.248500 75% 95.95400093.94200091.73800094.0592500 80% 114.675000 107.43 106.378000 108.673000 85% 137.851000 129.511000 127.156500 131.750750 90% 179.669000 170.208500 164.027000 172.348000 95% 272.395000 257.845500 247.750500 263.275750 98% 399.034500 412.170400 391.484000 402.835600 day5 day6day7 day8 count 7766.00 7766.0 7766.00 7766.00 mean82.53267779.2192377.61138081.075081 std 104.870079 101.34819 103.140037 97.506221 min 0.051000 0.02900 0.007000 0.068000 25% 32.87300033.4440031.96550033.863500 50% 52.18050051.5655050.80650053.08 75% 90.90575086.8262583.85925089.973000 80% 105.455000 99.6470097.271000104.225000 85% 128.30 118.47825 116.570250 126.648250 90% 166.647500 149.18000 150.649500 161.087000 95% 247.208500 224.36050 226.38 245.291250 98% 393.002000 347.92060 369.791800 378.778600 day9 day10day11day12 count 7766.00 7766.00 7766.00 7766.00 mean79.98917083.85941778.03293077.060542 std 104.226122 108.893043 102.561715 99.844276 min 0.118000 0.017000 0.028000 0.039000 25% 32.05625033.45450031.17625030.897750 50% 51.50600054.05600048.96950049.069000 75% 88.51350092.95350083.50675084.096000 80% 102.876000 107.845000 97.71700098.073000 85% 124.363000 128.288000 118.366500 116.869250 90% 160.557000 167.084000 154.342500 148.187500 95% 231.149000 242.925750 236.759000 228.131250 98% 367.206600 388.619100 385.269100 376.541600 day13day14 count 7766.00 7766.00 mean75.52803673.702878 std 90.75059486.796016 min 0.066000 0.054000 25% 31.17050031.608500 50% 48.75850049.215000 75% 84.52275083.053000 80% 97.87900094.875000 85% 116.680250 113.573750 90% 149.083500 144.089500 95% 226.177750 211.488750 98% 347.011100 331.317100 Signed-off-by: Dongdong Yang Co-developed-by: Jun Tao Co-developed-by: Qiwu Huang Co-developed-by: Geliang Tang Co-developed-by: Peng Wang --- drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/fbsched/Kconfig | 10 ++ drivers/staging/fbsched/Makefile | 2 + drivers/staging/fbsched/usf.c| 346 +++ kernel/sched/cpufreq_schedutil.c | 3 + kernel/sched/sched.h | 10 ++ 7 files changed, 374 insertions(+) create mode 100644 drivers/staging/fbsched/Kconfig create mode 100644 drivers/staging/fbsched/Makefile create mode 100644 drivers/staging/fbsched/usf.c diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 4ec5528..05b231e 100644 --- a/drive
[PATCH v2] Provide USF for the portable equipment.
From: Dongdong Yang This patch provides USF(User Sensitive Feedback factor) auxiliary cpufreq governor to support high level layer sysfs inodes setting for utils adjustment purpose from the identified scenario on portable equipment. Because the power consumption and UI response are more cared for by portable equipment users. And the "screen off" status stands for no request from the user, however, the kernel is still expected to notify the user in time on modem, network or powerkey events occur. USF provides "sched_usf_non_ux_r" sysfs inode to cut down the utils from user space tasks according to high level scenario. In addition, it usually hints more cpufreq demand that the preemptive counts of the tasks on the cpu burst and over the user expecting completed time such as the ratio sysctl_sched_latency to sysctl_sched_min_granularity on "screen on" status, which more likely with more UI. The sysfs inodes "sched_usf_up_l0_r" and "sched_usf_down_r" have been provided to adjust the utils according to high level identified scenario to alloc the cpufreq in time. Changes in v2 - Add adjust_task_pred_set switch. - Move adjust_task_pred_demand declaration into sched.h - Update comments. Dongdong Yang (1): sched: Provide USF for the portable equipment. drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/fbsched/Kconfig | 10 ++ drivers/staging/fbsched/Makefile | 2 + drivers/staging/fbsched/usf.c| 346 +++ kernel/sched/cpufreq_schedutil.c | 3 + kernel/sched/sched.h | 10 ++ 7 files changed, 374 insertions(+) create mode 100644 drivers/staging/fbsched/Kconfig create mode 100644 drivers/staging/fbsched/Makefile create mode 100644 drivers/staging/fbsched/usf.c -- 2.7.4 ___ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
[PATCH v3] Provide USF for the portable equipment.
From: Dongdong Yang This patch provides USF(User Sensitive Feedback factor) auxiliary cpufreq governor to support high level layer sysfs inodes setting for utils adjustment purpose from the identified scenario on portable equipment. Because the power consumption and UI response are more cared for by portable equipment users. And the "screen off" status stands for no request from the user, however, the kernel is still expected to notify the user in time on modem, network or powerkey events occur. USF provides "sched_usf_non_ux_r" sysfs inode to cut down the utils from user space tasks according to high level scenario. In addition, it usually hints more cpufreq demand that the preemptive counts of the tasks on the cpu burst and over the user expecting completed time such as the ratio sysctl_sched_latency to sysctl_sched_min_granularity on "screen on" status, which more likely with more UI. The sysfs inodes "sched_usf_up_l0_r" and "sched_usf_down_r" have been provided to adjust the utils according to high level identified scenario to alloc the cpufreq in time. Changes in v3 - Move usf.c to kernel/sched. - Remove trace_printk and debugfs. - Add document draft. - Update comments. Changes in v2 - Add adjust_task_pred_set switch. - Move adjust_task_pred_demand declaration into sched.h - Update comments. Dongdong Yang (1): sched: Provide USF for the portable equipment. Documentation/scheduler/sched-ufs.txt | 78 + drivers/cpufreq/Kconfig | 11 ++ drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + include/trace/events/sched.h | 35 kernel/sched/Makefile | 1 + kernel/sched/cpufreq_schedutil.c | 3 + kernel/sched/sched.h | 10 ++ kernel/sched/usf.c| 305 ++ 9 files changed, 446 insertions(+) create mode 100644 Documentation/scheduler/sched-ufs.txt create mode 100644 kernel/sched/usf.c -- 2.7.4 ___ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
[PATCH v3] sched: Provide USF for the portable equipment.
From: Dongdong Yang The power consumption and UI response are more cared for by the portable equipment users. USF(User Sensitive Feedback factor) auxiliary cpufreq governor is providing more utils adjustment settings to the high level by scenario identification. From the view of portable equipment, screen off status usually stands for no request from the user, however, the kernel is still expected to notify the user in time on modem, network or powerkey events occur. In some scenarios, such as listening to music, low power processors, such as DSP, take more actions and CPU load requirements cut down. It would bring more power consumption benefit if high level have interfaces to adjust utils according to the current scenario and load. In addition, the portable equipment user usually heavily interact with devices by touch, and other peripherals. The boost preemptive counts are marking the load requirement urgent, vice versa. If such feedback factor could be set to high level according to the scenario, it would contribute to the power consumption and UI response. If no USF sysfs inode is set, and no screen on or off event, adjust_task_pred_demand shall not be invoked. Once sched_usf_up_l0_r sched_usf_down_r or sched_usf_non_ux_r be set, adjust_task_pred_demand shall be called back to update settings according to high level scenario identification. We can get about 17% mean power consumption save at listening to music with speaker on "screen off" scenario, as below statistical data from 7766 XiaoMi devices for two weeks with sched_usf_non_ux_r be set: day1 day2 day3 day4 count 7766.00 7766.00 7766.00 7766.00 mean88.03552585.50028283.82930586.054997 std 111.049980 108.258834 107.562583 108.558240 min 0.099000 0.037000 0.067000 0.045000 25% 34.76550034.02175034.10150034.423000 50% 54.9555.28650054.18950054.248500 75% 95.95400093.94200091.73800094.0592500 80% 114.675000 107.43 106.378000 108.673000 85% 137.851000 129.511000 127.156500 131.750750 90% 179.669000 170.208500 164.027000 172.348000 95% 272.395000 257.845500 247.750500 263.275750 98% 399.034500 412.170400 391.484000 402.835600 day5 day6day7 day8 count 7766.00 7766.0 7766.00 7766.00 mean82.53267779.2192377.61138081.075081 std 104.870079 101.34819 103.140037 97.506221 min 0.051000 0.02900 0.007000 0.068000 25% 32.87300033.4440031.96550033.863500 50% 52.18050051.5655050.80650053.08 75% 90.90575086.8262583.85925089.973000 80% 105.455000 99.6470097.271000104.225000 85% 128.30 118.47825 116.570250 126.648250 90% 166.647500 149.18000 150.649500 161.087000 95% 247.208500 224.36050 226.38 245.291250 98% 393.002000 347.92060 369.791800 378.778600 day9 day10day11day12 count 7766.00 7766.00 7766.00 7766.00 mean79.98917083.85941778.03293077.060542 std 104.226122 108.893043 102.561715 99.844276 min 0.118000 0.017000 0.028000 0.039000 25% 32.05625033.45450031.17625030.897750 50% 51.50600054.05600048.96950049.069000 75% 88.51350092.95350083.50675084.096000 80% 102.876000 107.845000 97.71700098.073000 85% 124.363000 128.288000 118.366500 116.869250 90% 160.557000 167.084000 154.342500 148.187500 95% 231.149000 242.925750 236.759000 228.131250 98% 367.206600 388.619100 385.269100 376.541600 day13day14 count 7766.00 7766.00 mean75.52803673.702878 std 90.75059486.796016 min 0.066000 0.054000 25% 31.17050031.608500 50% 48.75850049.215000 75% 84.52275083.053000 80% 97.87900094.875000 85% 116.680250 113.573750 90% 149.083500 144.089500 95% 226.177750 211.488750 98% 347.011100 331.317100 Signed-off-by: Dongdong Yang Co-developed-by: Jun Tao Co-developed-by: Qiwu Huang Co-developed-by: Peng Wang --- Documentation/scheduler/sched-ufs.txt | 78 + drivers/cpufreq/Kconfig | 11 ++ drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + include/trace/events/sched.h | 35 kernel/sched/Makefile | 1 + kernel/sched/cpufreq_schedutil.c | 3 + kernel/sched/sched.h | 10 ++ kernel/sched/usf.c| 305 ++ 9 files changed, 446 insertions(+) create mode 100644 Documentation/scheduler/sched-ufs.txt create mode 100644 kernel/sched/usf.c diff --git a/Documentation/scheduler/sched-ufs.txt b/Doc
[PATCH v4] Provide USF for the portable equipment.
From: Dongdong Yang This patch provides USF(User Sensitive Feedback factor) auxiliary cpufreq governor to support high level layer sysfs inodes setting for utils adjustment purpose from the identified scenario on portable equipment. Because the power consumption and UI response are more cared for by portable equipment users. And the "screen off" status stands for no request from the user, however, the kernel is still expected to notify the user in time on modem, network or powerkey events occur. USF provides "sched_usf_non_ux_r" sysfs inode to cut down the utils from user space tasks according to high level scenario. In addition, it usually hints more cpufreq demand that the preemptive counts of the tasks on the cpu burst and over the user expecting completed time such as the ratio sysctl_sched_latency to sysctl_sched_min_granularity on "screen on" status, which more likely with more UI. The sysfs inodes "sched_usf_up_l0_r" and "sched_usf_down_r" have been provided to adjust the utils according to high level identified scenario to alloc the cpufreq in time. Changes in v4 Based on comments from Greg, Randy and Viresh - Add USF sysfs to ABI - Remove kobj field from usf. - Clean Kconfig left at staging. Changes in v3 Based on comments from Greg, Dietmar, Christoph and Randy - Move usf.c to kernel/sched from staging. - Remove trace_printk and debugfs. - Add document draft. - Update comments. Changes in v2 Based on comments from Steven, Greg, Peter and Dan: - Add adjust_task_pred_set switch. - Move adjust_task_pred_demand declaration into sched.h - Update comments. - Clean usf structure. Changes in v1 Initial USF Dongdong Yang (1): sched: Provide USF for the portable equipment. Documentation/ABI/testing/sysfs-devices-system-cpu | 48 drivers/cpufreq/Kconfig| 11 + include/trace/events/sched.h | 35 +++ kernel/sched/Makefile | 1 + kernel/sched/cpufreq_schedutil.c | 3 + kernel/sched/sched.h | 10 + kernel/sched/usf.c | 294 + 7 files changed, 402 insertions(+) create mode 100644 kernel/sched/usf.c -- 2.7.4 ___ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
[PATCH v4] sched: Provide USF for the portable equipment.
From: Dongdong Yang The power consumption and UI response are more cared for by the portable equipment users. USF(User Sensitive Feedback factor) auxiliary cpufreq governor is providing more utils adjustment settings to the high level by scenario identification. From the view of portable equipment, screen off status usually stands for no request from the user, however, the kernel is still expected to notify the user in time on modem, network or powerkey events occur. In some scenarios, such as listening to music, low power processors, such as DSP, take more actions and CPU load requirements cut down. It would bring more power consumption benefit if high level have interfaces to adjust utils according to the current scenario and load. In addition, the portable equipment user usually heavily interact with devices by touch, and other peripherals. The boost preemptive counts are marking the load requirement urgent, vice versa. If such feedback factor could be set to high level according to the scenario, it would contribute to the power consumption and UI response. If no USF sysfs inode is set, and no screen on or off event, adjust_task_pred_demand shall not be invoked. Once sched_usf_up_l0_r sched_usf_down_r or sched_usf_non_ux_r be set, adjust_task_pred_demand shall be called back to update settings according to high level scenario identification. We can get about 17% mean power consumption save at listening to music with speaker on "screen off" scenario, as below statistical data from 7766 XiaoMi devices for two weeks with sched_usf_non_ux_r be set: day1 day2 day3 day4 count 7766.00 7766.00 7766.00 7766.00 mean88.03552585.50028283.82930586.054997 std 111.049980 108.258834 107.562583 108.558240 min 0.099000 0.037000 0.067000 0.045000 25% 34.76550034.02175034.10150034.423000 50% 54.9555.28650054.18950054.248500 75% 95.95400093.94200091.73800094.0592500 80% 114.675000 107.43 106.378000 108.673000 85% 137.851000 129.511000 127.156500 131.750750 90% 179.669000 170.208500 164.027000 172.348000 95% 272.395000 257.845500 247.750500 263.275750 98% 399.034500 412.170400 391.484000 402.835600 day5 day6day7 day8 count 7766.00 7766.0 7766.00 7766.00 mean82.53267779.2192377.61138081.075081 std 104.870079 101.34819 103.140037 97.506221 min 0.051000 0.02900 0.007000 0.068000 25% 32.87300033.4440031.96550033.863500 50% 52.18050051.5655050.80650053.08 75% 90.90575086.8262583.85925089.973000 80% 105.455000 99.6470097.271000104.225000 85% 128.30 118.47825 116.570250 126.648250 90% 166.647500 149.18000 150.649500 161.087000 95% 247.208500 224.36050 226.38 245.291250 98% 393.002000 347.92060 369.791800 378.778600 day9 day10day11day12 count 7766.00 7766.00 7766.00 7766.00 mean79.98917083.85941778.03293077.060542 std 104.226122 108.893043 102.561715 99.844276 min 0.118000 0.017000 0.028000 0.039000 25% 32.05625033.45450031.17625030.897750 50% 51.50600054.05600048.96950049.069000 75% 88.51350092.95350083.50675084.096000 80% 102.876000 107.845000 97.71700098.073000 85% 124.363000 128.288000 118.366500 116.869250 90% 160.557000 167.084000 154.342500 148.187500 95% 231.149000 242.925750 236.759000 228.131250 98% 367.206600 388.619100 385.269100 376.541600 day13day14 count 7766.00 7766.00 mean75.52803673.702878 std 90.75059486.796016 min 0.066000 0.054000 25% 31.17050031.608500 50% 48.75850049.215000 75% 84.52275083.053000 80% 97.87900094.875000 85% 116.680250 113.573750 90% 149.083500 144.089500 95% 226.177750 211.488750 98% 347.011100 331.317100 Signed-off-by: Dongdong Yang Co-developed-by: Jun Tao Co-developed-by: Qiwu Huang Co-developed-by: Peng Wang --- Documentation/ABI/testing/sysfs-devices-system-cpu | 48 drivers/cpufreq/Kconfig| 11 + include/trace/events/sched.h | 35 +++ kernel/sched/Makefile | 1 + kernel/sched/cpufreq_schedutil.c | 3 + kernel/sched/sched.h | 10 + kernel/sched/usf.c | 294 + 7 files changed, 402 insertions(+) create mode 100644 kernel/sched/usf.c diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu index b555df8..e299418 10
[PATCH v5] Provide USF for the portable equipment.
From: Dongdong Yang This patch provides USF(User Sensitive Feedback factor) auxiliary cpufreq governor to support high level layer sysfs inodes setting for util adjustment purpose from the identified scenario on portable equipment. Because the power consumption and UI response are more cared for by portable equipment users. And the "screen off" status stands for no request from the user, however, the kernel is still expected to notify the user in time on modem, network or powerkey events occur. USF provides "non_ux_r" sysfs inode to cut down the utils from user space tasks according to high level scenario. In addition, it usually hints more cpufreq demand that the preemptive counts of the tasks on the cpu burst and over the user expecting completed time such as the ratio sysctl_sched_latency to sysctl_sched_min_granularity on "screen on" status, which more likely with more UI. The sysfs inodes "up_l0_r" and "down_r" have been provided to adjust the utils according to high level identified scenario to alloc the cpufreq in time. Changes in v5 Based on comments from Greg, Peterz, Qais and Randy - Updated USF sysfs to ABI - Updated the names of USF functions. - Clean sched.h and trace.h changes. Changes in v4 Based on comments from Greg, Randy and Viresh - Add USF sysfs to ABI - Remove kobj field from usf. - Clean Kconfig left at staging. Changes in v3 Based on comments from Greg, Dietmar, Christoph and Randy - Move usf.c to kernel/sched from staging. - Remove trace_printk and debugfs. - Add document draft. - Update comments. Changes in v2 Based on comments from Steven, Greg, Peter and Dan: - Add adjust_task_pred_set switch. - Move adjust_task_pred_demand declaration into sched.h - Update comments. - Clean usf structure. Changes in v1 Initial USF Dongdong Yang (1): sched: Provide USF for the portable equipment. Documentation/ABI/testing/sysfs-devices-system-cpu | 31 ++ drivers/cpufreq/Kconfig| 11 + kernel/sched/Makefile | 1 + kernel/sched/cpufreq_schedutil.c | 5 + kernel/sched/usf.c | 314 + 5 files changed, 362 insertions(+) create mode 100644 kernel/sched/usf.c -- 2.7.4 ___ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
[PATCH v5] sched: Provide USF for the portable equipment.
From: Dongdong Yang The power consumption and UI response are more cared for by the portable equipment users. USF(User Sensitive Feedback factor) auxiliary cpufreq governor is providing more util adjustment settings to the high level by scenario identification. From the view of portable equipment, screen off status usually stands for no request from the user, however, the kernel is still expected to notify the user in time on modem, network or powerkey events occur. In some scenarios, such as listening to music, low power processors, such as DSP, take more actions and CPU load requirements cut down. It would bring more power consumption benefit if high level have interfaces to adjust utils according to the current scenario and load. In addition, the portable equipment user usually heavily interact with devices by touch, and other peripherals. The boost preemptive counts are marking the load requirement urgent, vice versa. If such feedback factor could be set to high level according to the scenario, it would contribute to the power consumption and UI response. If no USF sysfs inode is set, and no screen on or off event, adjust_pred_demand shall not be invoked. Once up_l0_r down_r or non_ux_r be set, adjust_pred_demand shall be called back to update settings according to high level scenario identification. We can get about 17% mean power consumption save at listening to music with speaker on "screen off" scenario, as below statistical data from 7766 XiaoMi devices for two weeks with non_ux_r be set: day1 day2 day3 day4 count 7766.00 7766.00 7766.00 7766.00 mean88.03552585.50028283.82930586.054997 std 111.049980 108.258834 107.562583 108.558240 min 0.099000 0.037000 0.067000 0.045000 25% 34.76550034.02175034.10150034.423000 50% 54.9555.28650054.18950054.248500 75% 95.95400093.94200091.73800094.0592500 80% 114.675000 107.43 106.378000 108.673000 85% 137.851000 129.511000 127.156500 131.750750 90% 179.669000 170.208500 164.027000 172.348000 95% 272.395000 257.845500 247.750500 263.275750 98% 399.034500 412.170400 391.484000 402.835600 day5 day6day7 day8 count 7766.00 7766.0 7766.00 7766.00 mean82.53267779.2192377.61138081.075081 std 104.870079 101.34819 103.140037 97.506221 min 0.051000 0.02900 0.007000 0.068000 25% 32.87300033.4440031.96550033.863500 50% 52.18050051.5655050.80650053.08 75% 90.90575086.8262583.85925089.973000 80% 105.455000 99.6470097.271000104.225000 85% 128.30 118.47825 116.570250 126.648250 90% 166.647500 149.18000 150.649500 161.087000 95% 247.208500 224.36050 226.38 245.291250 98% 393.002000 347.92060 369.791800 378.778600 day9 day10day11day12 count 7766.00 7766.00 7766.00 7766.00 mean79.98917083.85941778.03293077.060542 std 104.226122 108.893043 102.561715 99.844276 min 0.118000 0.017000 0.028000 0.039000 25% 32.05625033.45450031.17625030.897750 50% 51.50600054.05600048.96950049.069000 75% 88.51350092.95350083.50675084.096000 80% 102.876000 107.845000 97.71700098.073000 85% 124.363000 128.288000 118.366500 116.869250 90% 160.557000 167.084000 154.342500 148.187500 95% 231.149000 242.925750 236.759000 228.131250 98% 367.206600 388.619100 385.269100 376.541600 day13day14 count 7766.00 7766.00 mean75.52803673.702878 std 90.75059486.796016 min 0.066000 0.054000 25% 31.17050031.608500 50% 48.75850049.215000 75% 84.52275083.053000 80% 97.87900094.875000 85% 116.680250 113.573750 90% 149.083500 144.089500 95% 226.177750 211.488750 98% 347.011100 331.317100 Signed-off-by: Dongdong Yang Co-developed-by: Jun Tao Co-developed-by: Qiwu Huang Co-developed-by: Peng Wang Signed-off-by: Dongdong Yang --- Documentation/ABI/testing/sysfs-devices-system-cpu | 31 ++ drivers/cpufreq/Kconfig| 11 + kernel/sched/Makefile | 1 + kernel/sched/cpufreq_schedutil.c | 5 + kernel/sched/usf.c | 314 + 5 files changed, 362 insertions(+) create mode 100644 kernel/sched/usf.c diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu index b555df8..e9a4cfd 100644 --- a/Documentation/ABI/testing/sysfs-devices-system-cpu +++ b/Documentation/ABI/testing/sysfs-devices-system-cpu @@ -614,3 +614,34 @@ D
