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| author | Mario Limonciello <mario.limonciello@dell.com> | 2018-03-28 19:01:09 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-03-30 12:01:20 +0200 |
| commit | 355064675f1c997cea017ea64c8f2c216e5425d9 (patch) | |
| tree | 71dcf9924f7878f793cb72f21f69fad606523b1f /Documentation/ABI/testing/sysfs-power | |
| parent | PCMCIA / PM: Avoid noirq suspend aborts during suspend-to-idle (diff) | |
| download | linux-355064675f1c997cea017ea64c8f2c216e5425d9.tar.xz linux-355064675f1c997cea017ea64c8f2c216e5425d9.zip | |
PM / hibernate: Make passing hibernate offsets more friendly
Currently the only way to specify a hibernate offset for a
swap file is on the kernel command line.
Add a new /sys/power/resume_offset that lets userspace
specify the offset and disk to use when initiating a hibernate
cycle.
Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-power')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-power | 14 |
1 files changed, 14 insertions, 0 deletions
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.
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