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| author |   Tejun Heo <tj@kernel.org> | 2019-07-16 07:58:31 -0700 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2019-07-16 10:06:39 -0600 |
| commit | 07b0fdecb2477396bcb69609019aade2b22124a1 (patch) | |
| tree | b554d081cf839d5d04679b62db42decb4e0cc517 /block/blk-iolatency.c | |
| parent | io_uring: fix counter inc/dec mismatch in async_list (diff) | |
| download | linux-dev-07b0fdecb2477396bcb69609019aade2b22124a1.tar.xz linux-dev-07b0fdecb2477396bcb69609019aade2b22124a1.zip | |
blkcg: allow blkcg_policy->pd_stat() to print non-debug info too
Currently, ->pd_stat() is called only when moduleparam
blkcg_debug_stats is set which prevents it from printing non-debug
policy-specific statistics. Let's move debug testing down so that
->pd_stat() can print non-debug stat too. This patch doesn't cause
any visible behavior change.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-iolatency.c')
| -rw-r--r-- | block/blk-iolatency.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/block/blk-iolatency.c b/block/blk-iolatency.c index d973c38ee4fd..0fff7b56df0e 100644 --- a/block/blk-iolatency.c +++ b/block/blk-iolatency.c @@ -917,6 +917,9 @@ static size_t iolatency_pd_stat(struct blkg_policy_data *pd, char *buf, unsigned long long avg_lat; unsigned long long cur_win; + if (!blkcg_debug_stats) + return 0; + if (iolat->ssd) return iolatency_ssd_stat(iolat, buf, size); |