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_register(struct request_queue *q);
  18 void blk_mq_debugfs_unregister(struct request_queue *q);
  19 int blk_mq_debugfs_register_hctx(struct request_queue *q,
  20                                  struct blk_mq_hw_ctx *hctx);
  21 void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx);
  22 int blk_mq_debugfs_register_hctxs(struct request_queue *q);
  23 void blk_mq_debugfs_unregister_hctxs(struct request_queue *q);
  24
  25 int blk_mq_debugfs_register_sched(struct request_queue *q);
  26 void blk_mq_debugfs_unregister_sched(struct request_queue *q);
  27 int blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
  28                                        struct blk_mq_hw_ctx *hctx);
  29 void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx);
  30 #else
  31 static inline int blk_mq_debugfs_register(struct request_queue *q)
  32 {
  33         return 0;
  34 }
  35
  36 static inline void blk_mq_debugfs_unregister(struct request_queue *q)
  37 {
  38 }
  39
  40 static inline int blk_mq_debugfs_register_hctx(struct request_queue *q,
  41                                                struct blk_mq_hw_ctx *hctx)
  42 {
  43         return 0;
  44 }
  45
  46 static inline void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx)
  47 {
  48 }
  49
  50 static inline int blk_mq_debugfs_register_hctxs(struct request_queue *q)
  51 {
  52         return 0;
  53 }
  54
  55 static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)
  56 {
  57 }
  58
  59 static inline int blk_mq_debugfs_register_sched(struct request_queue *q)
  60 {
  61         return 0;
  62 }
  63
  64 static inline void blk_mq_debugfs_unregister_sched(struct request_queue *q)
  65 {
  66 }
  67
  68 static inline int blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
  69                                                      struct blk_mq_hw_ctx *hctx)
  70 {
  71         return 0;
  72 }
  73
  74 static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx)
  75 {
  76 }
  77 #endif
  78
  79 #endif