diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-system-cpu | 25 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-power | 14 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt | 4 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt | 4 | ||||
| -rw-r--r-- | Documentation/power/swsusp.txt | 10 |
5 files changed, 48 insertions, 9 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu index 4ed63b6cfb15..025b7cf3768d 100644 --- a/Documentation/ABI/testing/sysfs-devices-system-cpu +++ b/Documentation/ABI/testing/sysfs-devices-system-cpu @@ -198,6 +198,31 @@ Description: time (in microseconds) this cpu should spend in this idle state to make the transition worth the effort. +What: /sys/devices/system/cpu/cpuX/cpuidle/stateN/s2idle/ +Date: March 2018 +KernelVersion: v4.17 +Contact: Linux power management list <linux-pm@vger.kernel.org> +Description: + Idle state usage statistics related to suspend-to-idle. + + This attribute group is only present for states that can be + used in suspend-to-idle with suspended timekeeping. + +What: /sys/devices/system/cpu/cpuX/cpuidle/stateN/s2idle/time +Date: March 2018 +KernelVersion: v4.17 +Contact: Linux power management list <linux-pm@vger.kernel.org> +Description: + Total time spent by the CPU in suspend-to-idle (with scheduler + tick suspended) after requesting this state. + +What: /sys/devices/system/cpu/cpuX/cpuidle/stateN/s2idle/usage +Date: March 2018 +KernelVersion: v4.17 +Contact: Linux power management list <linux-pm@vger.kernel.org> +Description: + Total number of times this state has been requested by the CPU + while entering suspend-to-idle. What: /sys/devices/system/cpu/cpu#/cpufreq/* Date: pre-git history diff --git a/Documentation/ABI/testing/sysfs-power b/Documentation/ABI/testing/sysfs-power index 1e0d1dac706b..2f813d644c69 100644 --- a/Documentation/ABI/testing/sysfs-power +++ b/Documentation/ABI/testing/sysfs-power @@ -287,3 +287,17 @@ Description: Writing a "1" to this file enables the debug messages and writing a "0" (default) to it disables them. Reads from this file return the current value. + +What: /sys/power/resume_offset +Date: April 2018 +Contact: Mario Limonciello <mario.limonciello@dell.com> +Description: + This file is used for telling the kernel an offset into a disk + to use when hibernating the system such as with a swap file. + + Reads from this file will display the current offset + the kernel will be using on the next hibernation + attempt. + + Using this sysfs file will override any values that were + set using the kernel command line for disk offset.
\ No newline at end of file diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt b/Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt index dd3929e85dec..332aed8f4597 100644 --- a/Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt +++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt @@ -18,8 +18,6 @@ Optional properties: in unit of nanoseconds. - voltage-tolerance: Specify the CPU voltage tolerance in percentage. - #cooling-cells: -- cooling-min-level: -- cooling-max-level: Please refer to Documentation/devicetree/bindings/thermal/thermal.txt. Examples: @@ -40,8 +38,6 @@ cpus { >; clock-latency = <61036>; /* two CLK32 periods */ #cooling-cells = <2>; - cooling-min-level = <0>; - cooling-max-level = <2>; }; cpu@1 { diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt index f6403089edcf..d36f07e0a2bb 100644 --- a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt +++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt @@ -21,8 +21,6 @@ Optional properties: flow is handled by hardware, hence no software "voltage tracking" is needed. - #cooling-cells: -- cooling-min-level: -- cooling-max-level: Please refer to Documentation/devicetree/bindings/thermal/thermal.txt for detail. @@ -67,8 +65,6 @@ Example 1 (MT7623 SoC): clock-names = "cpu", "intermediate"; operating-points-v2 = <&cpu_opp_table>; #cooling-cells = <2>; - cooling-min-level = <0>; - cooling-max-level = <7>; }; cpu@1 { device_type = "cpu"; diff --git a/Documentation/power/swsusp.txt b/Documentation/power/swsusp.txt index 9f2f942a01cf..cc87adf44c0a 100644 --- a/Documentation/power/swsusp.txt +++ b/Documentation/power/swsusp.txt @@ -24,8 +24,16 @@ Some warnings, first. * see the FAQ below for details. (This is not true for more traditional * power states like "standby", which normally don't turn USB off.) +Swap partition: You need to append resume=/dev/your_swap_partition to kernel command -line. Then you suspend by +line or specify it using /sys/power/resume. + +Swap file: +If using a swapfile you can also specify a resume offset using +resume_offset=<number> on the kernel command line or specify it +in /sys/power/resume_offset. + +After preparing then you suspend by echo shutdown > /sys/power/disk; echo disk > /sys/power/state |