diff options
| author | Tejun Heo <tj@kernel.org> | 2018-07-18 14:47:41 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-07-18 17:44:23 +0300 |
| commit | 636620b66d5d4012c4a9c86206013964d3986c4f (patch) | |
| tree | 89ecba6057c7ca99ee3a500438a6281b7c261faf /include/linux/blk-cgroup.h | |
| parent | bdca3c87fb7ad1cc61d231d37eb0d8f90d001e0c (diff) | |
| download | linux-636620b66d5d4012c4a9c86206013964d3986c4f.tar.xz | |
blkcg: Track DISCARD statistics and output them in cgroup io.stat
Add tracking of REQ_OP_DISCARD ios to the per-cgroup io.stat. Two
fields, dbytes and dios, to respectively count the total bytes and
number of discards are added.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Andy Newell <newella@fb.com>
Cc: Michael Callahan <michaelcallahan@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blk-cgroup.h')
| -rw-r--r-- | include/linux/blk-cgroup.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h index de57de4831d5..3bed5e02a873 100644 --- a/include/linux/blk-cgroup.h +++ b/include/linux/blk-cgroup.h @@ -35,6 +35,7 @@ enum blkg_rwstat_type { BLKG_RWSTAT_WRITE, BLKG_RWSTAT_SYNC, BLKG_RWSTAT_ASYNC, + BLKG_RWSTAT_DISCARD, BLKG_RWSTAT_NR, BLKG_RWSTAT_TOTAL = BLKG_RWSTAT_NR, @@ -649,7 +650,9 @@ static inline void blkg_rwstat_add(struct blkg_rwstat *rwstat, { struct percpu_counter *cnt; - if (op_is_write(op)) + if (op_is_discard(op)) + cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_DISCARD]; + else if (op_is_write(op)) cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_WRITE]; else cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_READ]; |