block/blk-mq-debugfs.h

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