diff options
| author | Alexey Romanov <avromanov@sberdevices.ru> | 2022-11-09 20:50:42 +0900 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-11-30 15:58:52 -0800 |
| commit | 7c2af309abd24ff4e313246bf9b68f398d95c871 (patch) | |
| tree | 75af9d314190c3812a1ec8a7ba37b2997ef01321 /include/linux/zsmalloc.h | |
| parent | f24ee92cbe13242758635e654b2422dbf4912e4b (diff) | |
zram: add size class equals check into recompression
It makes no sense for us to recompress the object if it will be in the
same size class. We anyway don't get any memory gain. But, at the same
time, we get a CPU time overhead when inserting this object into zspage
and decompressing it afterwards.
[senozhatsky: rebased and fixed conflicts]
Link: https://lkml.kernel.org/r/20221109115047.2921851-9-senozhatsky@chromium.org
Signed-off-by: Alexey Romanov <avromanov@sberdevices.ru>
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Suleiman Souhlal <suleiman@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/zsmalloc.h')
| -rw-r--r-- | include/linux/zsmalloc.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/zsmalloc.h b/include/linux/zsmalloc.h index 2a430e713ce5..a48cd0ffe57d 100644 --- a/include/linux/zsmalloc.h +++ b/include/linux/zsmalloc.h @@ -55,5 +55,7 @@ void zs_unmap_object(struct zs_pool *pool, unsigned long handle); unsigned long zs_get_total_pages(struct zs_pool *pool); unsigned long zs_compact(struct zs_pool *pool); +unsigned int zs_lookup_class_index(struct zs_pool *pool, unsigned int size); + void zs_pool_stats(struct zs_pool *pool, struct zs_pool_stats *stats); #endif |