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blk-mq-debugfs: Show more request state information 

Since commit 634f9e4631 ("blk-mq: remove REQ_ATOM_COMPLETE usages
from blk-mq") blk_rq_is_complete() only reports whether or not a
request has completed for legacy queues. Hence modify the
blk-mq-debugfs code such that it shows the blk-mq request state
again.

Fixes: 634f9e4631 ("blk-mq: remove REQ_ATOM_COMPLETE usages from blk-mq")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bart Van Assche 2018-03-16 10:31:11 -07:00 committed by Jens Axboe
parent 4c6994806f
commit ec6dcf63c5
1 changed files with 15 additions and 1 deletions
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16
block/blk-mq-debugfs.c
View File

@ -350,6 +350,20 @@ static const char *const rqf_name[] = {
}; };
#undef RQF_NAME #undef RQF_NAME
static const char *const blk_mq_rq_state_name_array[] = {
[MQ_RQ_IDLE] = "idle",
[MQ_RQ_IN_FLIGHT] = "in_flight",
[MQ_RQ_COMPLETE] = "complete",
};
static const char *blk_mq_rq_state_name(enum mq_rq_state rq_state)
{
if (WARN_ON_ONCE((unsigned int)rq_state >
ARRAY_SIZE(blk_mq_rq_state_name_array)))
return "(?)";
return blk_mq_rq_state_name_array[rq_state];
}
int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq) int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq)
{ {
const struct blk_mq_ops *const mq_ops = rq->q->mq_ops; const struct blk_mq_ops *const mq_ops = rq->q->mq_ops;
@ -366,7 +380,7 @@ int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq)
seq_puts(m, ", .rq_flags="); seq_puts(m, ", .rq_flags=");
blk_flags_show(m, (__force unsigned int)rq->rq_flags, rqf_name, blk_flags_show(m, (__force unsigned int)rq->rq_flags, rqf_name,
ARRAY_SIZE(rqf_name)); ARRAY_SIZE(rqf_name));
seq_printf(m, ", complete=%d", blk_rq_is_complete(rq)); seq_printf(m, ", .state=%s", blk_mq_rq_state_name(blk_mq_rq_state(rq)));
seq_printf(m, ", .tag=%d, .internal_tag=%d", rq->tag, seq_printf(m, ", .tag=%d, .internal_tag=%d", rq->tag,
rq->internal_tag); rq->internal_tag);
if (mq_ops->show_rq) if (mq_ops->show_rq)