diff options
| author | Minchan Kim <minchan@kernel.org> | 2020-12-14 19:14:32 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 12:13:47 -0800 |
| commit | 194e28da1a0279ef6a106a5b621fd79c410432ef (patch) | |
| tree | 5d79dfedf75b7bb9e6eb56d64ec34b0f70564929 /drivers/block/zram/zram_drv.c | |
| parent | 0d8359620d9be9823b6b9b3cf2dbe006cbfec594 (diff) | |
zram: add stat to gather incompressible pages since zram set up
Currently, zram supports the stat via /sys/block/zram/mm_stat to represent
how many of incompressible pages are stored at the moment but it couldn't
show how many times incompressible pages were wrote down since zram set
up. It's also good indication to see how zram is effective in the system.
Link: https://lkml.kernel.org/r/20201130201907.1284910-1-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/block/zram/zram_drv.c')
| -rw-r--r-- | drivers/block/zram/zram_drv.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 9a1e6ee4dbef..9481fa9eedd0 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1084,7 +1084,7 @@ static ssize_t mm_stat_show(struct device *dev, max_used = atomic_long_read(&zram->stats.max_used_pages); ret = scnprintf(buf, PAGE_SIZE, - "%8llu %8llu %8llu %8lu %8ld %8llu %8lu %8llu\n", + "%8llu %8llu %8llu %8lu %8ld %8llu %8lu %8llu %8llu\n", orig_size << PAGE_SHIFT, (u64)atomic64_read(&zram->stats.compr_data_size), mem_used << PAGE_SHIFT, @@ -1092,7 +1092,8 @@ static ssize_t mm_stat_show(struct device *dev, max_used << PAGE_SHIFT, (u64)atomic64_read(&zram->stats.same_pages), pool_stats.pages_compacted, - (u64)atomic64_read(&zram->stats.huge_pages)); + (u64)atomic64_read(&zram->stats.huge_pages), + (u64)atomic64_read(&zram->stats.huge_pages_since)); up_read(&zram->init_lock); return ret; @@ -1424,6 +1425,7 @@ out: if (comp_len == PAGE_SIZE) { zram_set_flag(zram, index, ZRAM_HUGE); atomic64_inc(&zram->stats.huge_pages); + atomic64_inc(&zram->stats.huge_pages_since); } if (flags) { |