diff options
| author | Sergey Senozhatsky <senozhatsky@chromium.org> | 2024-09-02 19:56:03 +0900 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-09 16:39:09 -0700 |
| commit | 4eac932103a5d8c3a1bdf6776dbc1a178c31d896 (patch) | |
| tree | 8a2caaf827dcd6150c15d3f6571b99a655285227 /Documentation/ABI | |
| parent | eb826a01909a2d39660ed5a486ebc43e831254bc (diff) | |
zram: introduce algorithm_params device attribute
This attribute is used to setup compression algorithms' parameters, so we
can tweak algorithms' characteristics. At this point only 'level' is
supported (to be extended in the future).
Each call sets up parameters for one particular algorithm, which should be
specified either by the algorithm's priority or algo name. This is
expected to be called after corresponding algorithm is selected via
comp_algorithm or recomp_algorithm.
echo "priority=0 level=1" > /sys/block/zram0/algorithm_params
or
echo "algo=zstd level=1" > /sys/block/zram0/algorithm_params
Link: https://lkml.kernel.org/r/20240902105656.1383858-16-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nick Terrell <terrelln@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-block-zram | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-block-zram b/Documentation/ABI/testing/sysfs-block-zram index 628a00fb20a9..1ef69e0271f9 100644 --- a/Documentation/ABI/testing/sysfs-block-zram +++ b/Documentation/ABI/testing/sysfs-block-zram @@ -151,3 +151,10 @@ Contact: Sergey Senozhatsky <senozhatsky@chromium.org> Description: The recompress file is write-only and triggers re-compression with secondary compression algorithms. + +What: /sys/block/zram<id>/algorithm_params +Date: August 2024 +Contact: Sergey Senozhatsky <senozhatsky@chromium.org> +Description: + The algorithm_params file is write-only and is used to setup + compression algorithm parameters. |