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