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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_hw_ctx;
10
11struct blk_mq_debugfs_attr {
12 const char *name;
13 umode_t mode;
14 int (*show)(void *, struct seq_file *);
15 ssize_t (*write)(void *, const char __user *, size_t, loff_t *);
16 /* Set either .show or .seq_ops. */
17 const struct seq_operations *seq_ops;
18};
19
20int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq);
21int blk_mq_debugfs_rq_show(struct seq_file *m, void *v);
22
23void blk_mq_debugfs_register(struct request_queue *q);
24void blk_mq_debugfs_register_hctx(struct request_queue *q,
25 struct blk_mq_hw_ctx *hctx);
26void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx);
27void blk_mq_debugfs_register_hctxs(struct request_queue *q);
28void blk_mq_debugfs_unregister_hctxs(struct request_queue *q);
29
30void blk_mq_debugfs_register_sched(struct request_queue *q);
31void blk_mq_debugfs_unregister_sched(struct request_queue *q);
32void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
33 struct blk_mq_hw_ctx *hctx);
34void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx);
35
36void blk_mq_debugfs_register_rq_qos(struct request_queue *q);
37#else
38static inline void blk_mq_debugfs_register(struct request_queue *q)
39{
40}
41
42static inline void blk_mq_debugfs_register_hctx(struct request_queue *q,
43 struct blk_mq_hw_ctx *hctx)
44{
45}
46
47static inline void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx)
48{
49}
50
51static inline void blk_mq_debugfs_register_hctxs(struct request_queue *q)
52{
53}
54
55static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)
56{
57}
58
59static inline void blk_mq_debugfs_register_sched(struct request_queue *q)
60{
61}
62
63static inline void blk_mq_debugfs_unregister_sched(struct request_queue *q)
64{
65}
66
67static inline void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
68 struct blk_mq_hw_ctx *hctx)
69{
70}
71
72static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx)
73{
74}
75
76static inline void blk_mq_debugfs_register_rq_qos(struct request_queue *q)
77{
78}
79
80#endif
81
82#if defined(CONFIG_BLK_DEV_ZONED) && defined(CONFIG_BLK_DEBUG_FS)
83int queue_zone_wplugs_show(void *data, struct seq_file *m);
84#else
85static inline int queue_zone_wplugs_show(void *data, struct seq_file *m)
86{
87 return 0;
88}
89#endif
90
91#endif