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authorSergey Senozhatsky <sergey.senozhatsky@gmail.com>2014-04-07 15:38:05 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-07 16:36:00 -0700
commit6444724939db5de7390c90f7b4a657159b3b4465 (patch)
tree7f92a0596c8312c7afff3630e9a00825269d83df /drivers/block/zram
parenta68eb3b65e658406d386bebef02277f4007b2f45 (diff)
zram: report failed read and write stats
zram accounted but did not report numbers of failed read and write queries. make these stats available as failed_reads and failed_writes attrs. Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Acked-by: Minchan Kim <minchan@kernel.org> Acked-by: Jerome Marchand <jmarchan@redhat.com> Cc: Nitin Gupta <ngupta@vflare.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/block/zram')
-rw-r--r--drivers/block/zram/zram_drv.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 29c35119e82a..c06d7fba4237 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -730,6 +730,8 @@ static DEVICE_ATTR(mem_used_total, S_IRUGO, mem_used_total_show, NULL);
ZRAM_ATTR_RO(num_reads);
ZRAM_ATTR_RO(num_writes);
+ZRAM_ATTR_RO(failed_reads);
+ZRAM_ATTR_RO(failed_writes);
ZRAM_ATTR_RO(invalid_io);
ZRAM_ATTR_RO(notify_free);
ZRAM_ATTR_RO(zero_pages);
@@ -741,6 +743,8 @@ static struct attribute *zram_disk_attrs[] = {
&dev_attr_reset.attr,
&dev_attr_num_reads.attr,
&dev_attr_num_writes.attr,
+ &dev_attr_failed_reads.attr,
+ &dev_attr_failed_writes.attr,
&dev_attr_invalid_io.attr,
&dev_attr_notify_free.attr,
&dev_attr_zero_pages.attr,