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https://github.com/torvalds/linux
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a98b05b02f
In preparation to completely remove zone write locking, replace the "zone_wlock" mq-debugfs entry that was listing zones that are write-locked with the zone_wplugs entry which lists the zones that currently have a write plug allocated. The write plug information provided is: the zone number, the zone write plug flags, the zone write plug write pointer offset and the number of BIOs currently waiting for execution in the zone write plug BIO list. Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Tested-by: Hans Holmberg <hans.holmberg@wdc.com> Tested-by: Dennis Maisenbacher <dennis.maisenbacher@wdc.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20240408014128.205141-26-dlemoal@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
/* 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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