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Commit c0cb1c6d authored by Bart Van Assche's avatar Bart Van Assche Committed by Jens Axboe
Browse files

blk-mq-debugfs: Show atomic request flags 



When analyzing e.g. queue lockups it is important to know whether
or not a request has already been started. Hence also show the
atomic request flags.

Signed-off-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: default avatarHannes Reinecke <hare@suse.com>
Reviewed-by: default avatarMing Lei <ming.lei@redhat.com>
Reviewed-by: default avatarEduardo Valentin <eduval@amazon.com>
Cc: Omar Sandoval <osandov@fb.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 03ea8ad7

block/blk-mq-debugfs.c

+10 −0
Original line number Diff line number Diff line
@@ -267,6 +267,14 @@ static const char *const rqf_name[] = { 
};

#undef RQF_NAME



#define RQAF_NAME(name) [REQ_ATOM_##name] = #name

static const char *const rqaf_name[] = {

	RQAF_NAME(COMPLETE),

	RQAF_NAME(STARTED),

	RQAF_NAME(POLL_SLEPT),

};

#undef RQAF_NAME



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;
@@ -283,6 +291,8 @@ int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq) 
	seq_puts(m, ", .rq_flags=");

	blk_flags_show(m, (__force unsigned int)rq->rq_flags, rqf_name,

		       ARRAY_SIZE(rqf_name));

	seq_puts(m, ", .atomic_flags=");

	blk_flags_show(m, rq->atomic_flags, rqaf_name, ARRAY_SIZE(rqaf_name));

	seq_printf(m, ", .tag=%d, .internal_tag=%d", rq->tag,

		   rq->internal_tag);

	if (mq_ops->show_rq)