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 110