block/blk-mq-debugfs.h

   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_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
  18 int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq);
  19 int blk_mq_debugfs_rq_show(struct seq_file *m, void *v);
  20
  21 int blk_mq_debugfs_register(struct request_queue *q);
  22 void blk_mq_debugfs_unregister(struct request_queue *q);
  23 int blk_mq_debugfs_register_hctx(struct request_queue *q,
  24                                  struct blk_mq_hw_ctx *hctx);
  25 void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx);
  26 int blk_mq_debugfs_register_hctxs(struct request_queue *q);
  27 void blk_mq_debugfs_unregister_hctxs(struct request_queue *q);
  28
  29 int blk_mq_debugfs_register_sched(struct request_queue *q);
  30 void blk_mq_debugfs_unregister_sched(struct request_queue *q);
  31 int blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
  32                                        struct blk_mq_hw_ctx *hctx);
  33 void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx);
  34
  35 int blk_mq_debugfs_register_rqos(struct rq_qos *rqos);
  36 void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos);
  37 void blk_mq_debugfs_unregister_queue_rqos(struct request_queue *q);
  38 #else
  39 static inline int blk_mq_debugfs_register(struct request_queue *q)
  40 {
  41         return 0;
  42 }
  43
  44 static inline void blk_mq_debugfs_unregister(struct request_queue *q)
  45 {
  46 }
  47
  48 static inline int blk_mq_debugfs_register_hctx(struct request_queue *q,
  49                                                struct blk_mq_hw_ctx *hctx)
  50 {
  51         return 0;
  52 }
  53
  54 static inline void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx)
  55 {
  56 }
  57
  58 static inline int blk_mq_debugfs_register_hctxs(struct request_queue *q)
  59 {
  60         return 0;
  61 }
  62
  63 static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)
  64 {
  65 }
  66
  67 static inline int blk_mq_debugfs_register_sched(struct request_queue *q)
  68 {
  69         return 0;
  70 }
  71
  72 static inline void blk_mq_debugfs_unregister_sched(struct request_queue *q)
  73 {
  74 }
  75
  76 static inline int blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
  77                                                      struct blk_mq_hw_ctx *hctx)
  78 {
  79         return 0;
  80 }
  81
  82 static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx)
  83 {
  84 }
  85
  86 static inline int blk_mq_debugfs_register_rqos(struct rq_qos *rqos)
  87 {
  88         return 0;
  89 }
  90
  91 static inline void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos)
  92 {
  93 }
  94
  95 static inline void blk_mq_debugfs_unregister_queue_rqos(struct request_queue *q)
  96 {
  97 }
  98 #endif
  99
 100 #ifdef CONFIG_BLK_DEBUG_FS_ZONED
 101 int queue_zone_wlock_show(void *data, struct seq_file *m);
 102 #else
 103 static inline int queue_zone_wlock_show(void *data, struct seq_file *m)
 104 {
 105         return 0;
 106 }
 107 #endif
 108
 109 #endif