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| author |   Bart Van Assche <bart.vanassche@sandisk.com> | 2017-06-01 08:55:13 -0700 |
|---|---|---|
| committer |   Jens Axboe <axboe@fb.com> | 2017-06-01 13:03:00 -0600 |
| commit | edea55abb86ff67afda96120d6254290e7a75d9e (patch) | |
| tree | 3dab507e31ac6b492fd21cc21f45c38f5bce9e19 | |
| parent | blk-mq-debugfs: Show busy requests (diff) | |
| download | linux-dev-edea55abb86ff67afda96120d6254290e7a75d9e.tar.xz linux-dev-edea55abb86ff67afda96120d6254290e7a75d9e.zip | |
blk-mq-debugfs: Add 'kick' operation
Running a queue causes the block layer to examine the per-CPU and
hw queues but not the requeue list. Hence add a 'kick' operation
that also examines the requeue list.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Eduardo Valentin <eduval@amazon.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
| -rw-r--r-- | block/blk-mq-debugfs.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c index 90c454bbaf92..9edebbdce0bd 100644 --- a/block/blk-mq-debugfs.c +++ b/block/blk-mq-debugfs.c @@ -114,10 +114,12 @@ static ssize_t queue_state_write(void *data, const char __user *buf, blk_mq_run_hw_queues(q, true); } else if (strcmp(op, "start") == 0) { blk_mq_start_stopped_hw_queues(q, true); + } else if (strcmp(op, "kick") == 0) { + blk_mq_kick_requeue_list(q); } else { pr_err("%s: unsupported operation '%s'\n", __func__, op); inval: - pr_err("%s: use either 'run' or 'start'\n", __func__); + pr_err("%s: use 'run', 'start' or 'kick'\n", __func__); return -EINVAL; } return count; |