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_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