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 #ifdef CONFIG_BLK_DEBUG_FS_ZONED 87 int queue_zone_wlock_show(void *data, struct seq_file *m); 88 #else 89 static inline int queue_zone_wlock_show(void *data, struct seq_file *m) 90 { 91 return 0; 92 } 93 #endif 94 95 #endif 96