On Wed, May 31, 2017 at 02:30:50PM -0700, Bart Van Assche wrote:
> 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@xxxxxxxxxxx>
> Cc: Christoph Hellwig <hch@xxxxxx>
> Cc: Hannes Reinecke <hare@xxxxxxxx>
> Cc: Omar Sandoval <osandov@xxxxxx>
> Cc: Ming Lei <ming.lei@xxxxxxxxxx>
> ---
> block/blk-mq-debugfs.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
> index fa0f624dfccd..962c8417809d 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;
> --
> 2.12.2
Reviewed-by: Ming Lei <ming.lei@xxxxxxxxxx>
Thanks,
Ming
