diff options
| author | Ingo Molnar <mingo@kernel.org> | 2019-09-16 14:04:28 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-09-16 14:05:04 +0200 |
| commit | 563c4f85f9f0d63b712081d5b4522152cdcb8b6b (patch) | |
| tree | 92351ab2d60d5fd7ce5745d21c9a60ce6d46c5dd /block/blk-cgroup.c | |
| parent | 4adcdcea717cb2d8436bef00dd689aa5bc76f11b (diff) | |
| parent | 09c7e8b21d67c3c78ab9701dbc0fb1e9f14a0ba5 (diff) | |
Merge branch 'sched/rt' into sched/core, to pick up -rt changes
Pick up the first couple of patches working towards PREEMPT_RT.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'block/blk-cgroup.c')
| -rw-r--r-- | block/blk-cgroup.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 24ed26957367..55a7dc227dfb 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -54,7 +54,7 @@ static struct blkcg_policy *blkcg_policy[BLKCG_MAX_POLS]; static LIST_HEAD(all_blkcgs); /* protected by blkcg_pol_mutex */ -static bool blkcg_debug_stats = false; +bool blkcg_debug_stats = false; static struct workqueue_struct *blkcg_punt_bio_wq; static bool blkcg_policy_enabled(struct request_queue *q, @@ -944,10 +944,7 @@ static int blkcg_print_stat(struct seq_file *sf, void *v) dbytes, dios); } - if (!blkcg_debug_stats) - goto next; - - if (atomic_read(&blkg->use_delay)) { + if (blkcg_debug_stats && atomic_read(&blkg->use_delay)) { has_stats = true; off += scnprintf(buf+off, size-off, " use_delay=%d delay_nsec=%llu", @@ -967,7 +964,7 @@ static int blkcg_print_stat(struct seq_file *sf, void *v) has_stats = true; off += written; } -next: + if (has_stats) { if (off < size - 1) { off += scnprintf(buf+off, size-off, "\n"); |