1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef INT_BLK_MQ_DEBUGFS_H
3#define INT_BLK_MQ_DEBUGFS_H
4
5#ifdef CONFIG_BLK_DEBUG_FS
6
7#include <linux/seq_file.h>
8
9struct blk_mq_debugfs_attr {
10	const char *name;
11	umode_t mode;
12	int (*show)(void *, struct seq_file *);
13	ssize_t (*write)(void *, const char __user *, size_t, loff_t *);
14	/* Set either .show or .seq_ops. */
15	const struct seq_operations *seq_ops;
16};
17
18int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq);
19int blk_mq_debugfs_rq_show(struct seq_file *m, void *v);
20
21void blk_mq_debugfs_register(struct request_queue *q);
22void blk_mq_debugfs_unregister(struct request_queue *q);
23void blk_mq_debugfs_register_hctx(struct request_queue *q,
24				  struct blk_mq_hw_ctx *hctx);
25void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx);
26void blk_mq_debugfs_register_hctxs(struct request_queue *q);
27void blk_mq_debugfs_unregister_hctxs(struct request_queue *q);
28
29void blk_mq_debugfs_register_sched(struct request_queue *q);
30void blk_mq_debugfs_unregister_sched(struct request_queue *q);
31void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
32				       struct blk_mq_hw_ctx *hctx);
33void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx);
34
35void blk_mq_debugfs_register_rqos(struct rq_qos *rqos);
36void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos);
37void blk_mq_debugfs_unregister_queue_rqos(struct request_queue *q);
38#else
39static inline void blk_mq_debugfs_register(struct request_queue *q)
40{
41}
42
43static inline void blk_mq_debugfs_unregister(struct request_queue *q)
44{
45}
46
47static inline void blk_mq_debugfs_register_hctx(struct request_queue *q,
48						struct blk_mq_hw_ctx *hctx)
49{
50}
51
52static inline void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx)
53{
54}
55
56static inline void blk_mq_debugfs_register_hctxs(struct request_queue *q)
57{
58}
59
60static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)
61{
62}
63
64static inline void blk_mq_debugfs_register_sched(struct request_queue *q)
65{
66}
67
68static inline void blk_mq_debugfs_unregister_sched(struct request_queue *q)
69{
70}
71
72static inline void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
73						      struct blk_mq_hw_ctx *hctx)
74{
75}
76
77static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx)
78{
79}
80
81static inline void blk_mq_debugfs_register_rqos(struct rq_qos *rqos)
82{
83}
84
85static inline void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos)
86{
87}
88
89static inline void blk_mq_debugfs_unregister_queue_rqos(struct request_queue *q)
90{
91}
92#endif
93
94#ifdef CONFIG_BLK_DEBUG_FS_ZONED
95int queue_zone_wlock_show(void *data, struct seq_file *m);
96#else
97static inline int queue_zone_wlock_show(void *data, struct seq_file *m)
98{
99	return 0;
100}
101#endif
102
103#endif
104