Eric Lee / smarc-fsl-linux-kernel

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block/blk-mq-debugfs.h 2.12 KB
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81f7e3824   Eric Lee   Initial Release, ... 
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  /* SPDX-License-Identifier: GPL-2.0 */
  #ifndef INT_BLK_MQ_DEBUGFS_H
  #define INT_BLK_MQ_DEBUGFS_H
  
  #ifdef CONFIG_BLK_DEBUG_FS
  
  #include <linux/seq_file.h>
  
  struct blk_mq_debugfs_attr {
  	const char *name;
  	umode_t mode;
  	int (*show)(void *, struct seq_file *);
  	ssize_t (*write)(void *, const char __user *, size_t, loff_t *);
  	/* Set either .show or .seq_ops. */
  	const struct seq_operations *seq_ops;
  };
  
  int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq);
  int blk_mq_debugfs_rq_show(struct seq_file *m, void *v);
  
  int blk_mq_debugfs_register(struct request_queue *q);
  void blk_mq_debugfs_unregister(struct request_queue *q);
  int blk_mq_debugfs_register_hctx(struct request_queue *q,
  				 struct blk_mq_hw_ctx *hctx);
  void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx);
  int blk_mq_debugfs_register_hctxs(struct request_queue *q);
  void blk_mq_debugfs_unregister_hctxs(struct request_queue *q);
  
  int blk_mq_debugfs_register_sched(struct request_queue *q);
  void blk_mq_debugfs_unregister_sched(struct request_queue *q);
  int blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
  				       struct blk_mq_hw_ctx *hctx);
  void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx);
  #else
  static inline int blk_mq_debugfs_register(struct request_queue *q)
  {
  	return 0;
  }
  
  static inline void blk_mq_debugfs_unregister(struct request_queue *q)
  {
  }
  
  static inline int blk_mq_debugfs_register_hctx(struct request_queue *q,
  					       struct blk_mq_hw_ctx *hctx)
  {
  	return 0;
  }
  
  static inline void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx)
  {
  }
  
  static inline int blk_mq_debugfs_register_hctxs(struct request_queue *q)
  {
  	return 0;
  }
  
  static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)
  {
  }
  
  static inline int blk_mq_debugfs_register_sched(struct request_queue *q)
  {
  	return 0;
  }
  
  static inline void blk_mq_debugfs_unregister_sched(struct request_queue *q)
  {
  }
  
  static inline int blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
  						     struct blk_mq_hw_ctx *hctx)
  {
  	return 0;
  }
  
  static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx)
  {
  }
  #endif
  
  #endif