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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/block/blk-mq-debugfs.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef INT_BLK_MQ_DEBUGFS_H

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#define INT_BLK_MQ_DEBUGFS_H

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#ifdef CONFIG_BLK_DEBUG_FS

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#include <linux/seq_file.h>

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struct blk_mq_hw_ctx;

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struct blk_mq_debugfs_attr {

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	const char *name;

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	umode_t mode;

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	int (*show)(void *, struct seq_file *);

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	ssize_t (*write)(void *, const char __user *, size_t, loff_t *);

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	/* Set either .show or .seq_ops. */

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	const struct seq_operations *seq_ops;

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};

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int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq);

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int blk_mq_debugfs_rq_show(struct seq_file *m, void *v);

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void blk_mq_debugfs_register(struct request_queue *q);

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void blk_mq_debugfs_register_hctx(struct request_queue *q,

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				  struct blk_mq_hw_ctx *hctx);

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void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx);

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void blk_mq_debugfs_register_hctxs(struct request_queue *q);

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void blk_mq_debugfs_unregister_hctxs(struct request_queue *q);

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void blk_mq_debugfs_register_sched(struct request_queue *q);

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void blk_mq_debugfs_unregister_sched(struct request_queue *q);

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void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,

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				       struct blk_mq_hw_ctx *hctx);

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void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx);

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void blk_mq_debugfs_register_rqos(struct rq_qos *rqos);

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void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos);

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#else

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static inline void blk_mq_debugfs_register(struct request_queue *q)

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{

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}

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static inline void blk_mq_debugfs_register_hctx(struct request_queue *q,

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						struct blk_mq_hw_ctx *hctx)

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{

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}

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static inline void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx)

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{

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}

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static inline void blk_mq_debugfs_register_hctxs(struct request_queue *q)

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{

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}

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static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)

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{

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}

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static inline void blk_mq_debugfs_register_sched(struct request_queue *q)

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{

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}

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static inline void blk_mq_debugfs_unregister_sched(struct request_queue *q)

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{

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}

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static inline void blk_mq_debugfs_register_sched_hctx(struct request_queue *q,

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						      struct blk_mq_hw_ctx *hctx)

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{

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}

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static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx)

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{

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}

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static inline void blk_mq_debugfs_register_rqos(struct rq_qos *rqos)

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{

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}

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static inline void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos)

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{

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}

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#endif

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#if defined(CONFIG_BLK_DEV_ZONED) && defined(CONFIG_BLK_DEBUG_FS)

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int queue_zone_wplugs_show(void *data, struct seq_file *m);

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#else

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static inline int queue_zone_wplugs_show(void *data, struct seq_file *m)

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{

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	return 0;

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}

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#endif

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#endif

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