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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-10-31 11:33:01 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-10-31 11:33:01 +0100 |
| commit | 1cf9c4f115019ebc77c6c1f6b379537bb1a48908 (patch) | |
| tree | 752ec814a60e0c43c9b1c16f88c776b9b2b969d3 /Documentation | |
| parent | 35e4a69b2003f20a69e7d19ae96ab1eef1aa8e8d (diff) | |
| parent | 8e4ec90701efec7f2814c89b398d6d4272636814 (diff) | |
| download | linux-1cf9c4f115019ebc77c6c1f6b379537bb1a48908.tar.gz | |
Merge back system sleep material for 6.19
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-power | 16 | ||||
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 10 |
2 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-power b/Documentation/ABI/testing/sysfs-power index 4d8e1ad020f05b..d38da077905a9d 100644 --- a/Documentation/ABI/testing/sysfs-power +++ b/Documentation/ABI/testing/sysfs-power @@ -454,3 +454,19 @@ Description: disables it. Reads from the file return the current value. The default is "1" if the build-time "SUSPEND_SKIP_SYNC" config flag is unset, or "0" otherwise. + +What: /sys/power/hibernate_compression_threads +Date: October 2025 +Contact: <luoxueqin@kylinos.cn> +Description: + Controls the number of threads used for compression + and decompression of hibernation images. + + The value can be adjusted at runtime to balance + performance and CPU utilization. + + The change takes effect on the next hibernation or + resume operation. + + Minimum value: 1 + Default value: 3 diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 6c42061ca20e58..46db3cbb838f22 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1907,6 +1907,16 @@ /sys/power/pm_test). Only available when CONFIG_PM_DEBUG is set. Default value is 5. + hibernate_compression_threads= + [HIBERNATION] + Set the number of threads used for compressing or decompressing + hibernation images. + + Format: <integer> + Default: 3 + Minimum: 1 + Example: hibernate_compression_threads=4 + highmem=nn[KMG] [KNL,BOOT,EARLY] forces the highmem zone to have an exact size of <nn>. This works even on boxes that have no highmem otherwise. This also works to reduce highmem |