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 #else 35 static inline int blk_mq_debugfs_register(struct request_queue *q) 36 { 37 return 0; 38 } 39 40 static inline void blk_mq_debugfs_unregister(struct request_queue *q) 41 { 42 } 43 44 static inline int blk_mq_debugfs_register_hctx(struct request_queue *q, 45 struct blk_mq_hw_ctx *hctx) 46 { 47 return 0; 48 } 49 50 static inline void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx) 51 { 52 } 53 54 static inline int blk_mq_debugfs_register_hctxs(struct request_queue *q) 55 { 56 return 0; 57 } 58 59 static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q) 60 { 61 } 62 63 static inline int blk_mq_debugfs_register_sched(struct request_queue *q) 64 { 65 return 0; 66 } 67 68 static inline void blk_mq_debugfs_unregister_sched(struct request_queue *q) 69 { 70 } 71 72 static inline int blk_mq_debugfs_register_sched_hctx(struct request_queue *q, 73 struct blk_mq_hw_ctx *hctx) 74 { 75 return 0; 76 } 77 78 static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx) 79 { 80 } 81 #endif 82 83 #endif 84