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_rq_qos(struct request_queue *q); 37 #else 38 static inline void blk_mq_debugfs_register(struct request_queue *q) 39 { 40 } 41 42 static inline void blk_mq_debugfs_register_hctx(struct request_queue *q, 43 struct blk_mq_hw_ctx *hctx) 44 { 45 } 46 47 static inline void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx) 48 { 49 } 50 51 static inline void blk_mq_debugfs_register_hctxs(struct request_queue *q) 52 { 53 } 54 55 static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q) 56 { 57 } 58 59 static inline void blk_mq_debugfs_register_sched(struct request_queue *q) 60 { 61 } 62 63 static inline void blk_mq_debugfs_unregister_sched(struct request_queue *q) 64 { 65 } 66 67 static inline void blk_mq_debugfs_register_sched_hctx(struct request_queue *q, 68 struct blk_mq_hw_ctx *hctx) 69 { 70 } 71 72 static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx) 73 { 74 } 75 76 static inline void blk_mq_debugfs_register_rq_qos(struct request_queue *q) 77 { 78 } 79 80 #endif 81 82 #if defined(CONFIG_BLK_DEV_ZONED) && defined(CONFIG_BLK_DEBUG_FS) 83 int queue_zone_wplugs_show(void *data, struct seq_file *m); 84 #else 85 static inline int queue_zone_wplugs_show(void *data, struct seq_file *m) 86 { 87 return 0; 88 } 89 #endif 90 91 #endif 92