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
9 struct blk_mq_hw_ctx;
10
11 struct 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
20 int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq);
21 int blk_mq_debugfs_rq_show(struct seq_file *m, void *v);
22
23 void blk_mq_debugfs_register(struct request_queue *q);
24 void blk_mq_debugfs_register_hctx(struct request_queue *q,
25 struct blk_mq_hw_ctx *hctx);
26 void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx);
27 void blk_mq_debugfs_register_hctxs(struct request_queue *q);
28 void blk_mq_debugfs_unregister_hctxs(struct request_queue *q);
29
30 void blk_mq_debugfs_register_sched(struct request_queue *q);
31 void blk_mq_debugfs_unregister_sched(struct request_queue *q);
32 void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
33 struct blk_mq_hw_ctx *hctx);
34 void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx);
35
36 void blk_mq_debugfs_register_rqos(struct rq_qos *rqos);
37 void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos);
38 #else
39 static inline void blk_mq_debugfs_register(struct request_queue *q)
40 {
41 }
42
43 static inline void blk_mq_debugfs_register_hctx(struct request_queue *q,
44 struct blk_mq_hw_ctx *hctx)
45 {
46 }
47
48 static inline void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx)
49 {
50 }
51
52 static inline void blk_mq_debugfs_register_hctxs(struct request_queue *q)
53 {
54 }
55
56 static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)
57 {
58 }
59
60 static inline void blk_mq_debugfs_register_sched(struct request_queue *q)
61 {
62 }
63
64 static inline void blk_mq_debugfs_unregister_sched(struct request_queue *q)
65 {
66 }
67
68 static inline void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
69 struct blk_mq_hw_ctx *hctx)
70 {
71 }
72
73 static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx)
74 {
75 }
76
77 static inline void blk_mq_debugfs_register_rqos(struct rq_qos *rqos)
78 {
79 }
80
81 static inline void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos)
82 {
83 }
84 #endif
85
86 #if defined(CONFIG_BLK_DEV_ZONED) && defined(CONFIG_BLK_DEBUG_FS)
87 int queue_zone_wplugs_show(void *data, struct seq_file *m);
88 #else
89 static inline int queue_zone_wplugs_show(void *data, struct seq_file *m)
90 {
91 return 0;
92 }
93 #endif
94
95 #endif
96
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