diff options
| author | Sergey Senozhatsky <senozhatsky@chromium.org> | 2024-09-02 19:56:12 +0900 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-09 16:39:12 -0700 |
| commit | e899007a5e10084649f558593f7e8f26088492fc (patch) | |
| tree | 461e92a0acd7267017e02d4131211c8b8c890886 /drivers/block | |
| parent | 97ee4842f23837c80091d7ac04b01e58d56085a5 (diff) | |
zram: support priority parameter in recompression
recompress device attribute supports alg=NAME parameter so that we can
specify only one particular algorithm we want to perform recompression
with. However, with algo params we now can have several exactly same
secondary algorithms but each with its own params tuning (e.g. priority 1
configured to use more aggressive level, and priority 2 configured to use
a pre-trained dictionary). Support priority=NUM parameter so that we can
correctly determine which secondary algorithm we want to use.
Link: https://lkml.kernel.org/r/20240902105656.1383858-25-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 'drivers/block')
| -rw-r--r-- | drivers/block/zram/zram_drv.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 9b29f9e6cb50..1f1bf175a6c3 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1855,6 +1855,18 @@ static ssize_t recompress_store(struct device *dev, algo = val; continue; } + + if (!strcmp(param, "priority")) { + ret = kstrtouint(val, 10, &prio); + if (ret) + return ret; + + if (prio == ZRAM_PRIMARY_COMP) + prio = ZRAM_SECONDARY_COMP; + + prio_max = min(prio + 1, ZRAM_MAX_COMPS); + continue; + } } if (threshold >= huge_class_size) |