70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef WB_THROTTLE_H
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#define WB_THROTTLE_H
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#ifdef CONFIG_BLK_WBT
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int wbt_init(struct gendisk *disk);
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void wbt_disable_default(struct gendisk *disk);
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void wbt_enable_default(struct gendisk *disk);
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u64 wbt_get_min_lat(struct request_queue *q);
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void wbt_set_min_lat(struct request_queue *q, u64 val);
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bool wbt_disabled(struct request_queue *);
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void wbt_set_write_cache(struct request_queue *, bool);
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u64 wbt_default_latency_nsec(struct request_queue *);
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#ifdef CONFIG_BLK_CGROUP
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ssize_t queue_wbt_class_lat_show(struct request_queue *q, char *page);
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ssize_t queue_wbt_class_lat_store(struct request_queue *q, const char *page, size_t count);
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ssize_t queue_wbt_class_conf_show(struct request_queue *q, char *page);
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ssize_t queue_wbt_class_conf_store(struct request_queue *q, const char *page, size_t count);
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int blk_wbt_init(struct gendisk *disk);
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#endif
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#else
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static inline void wbt_disable_default(struct gendisk *disk)
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{
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}
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static inline void wbt_enable_default(struct gendisk *disk)
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{
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}
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static inline void wbt_set_write_cache(struct request_queue *q, bool wc)
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{
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}
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static inline ssize_t queue_wbt_class_lat_show(struct request_queue *q,
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char *page)
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{
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return 0;
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}
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static inline ssize_t queue_wbt_class_lat_store(struct request_queue *q,
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const char *page, size_t count)
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{
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return 0;
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}
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static inline ssize_t queue_wbt_class_conf_show(struct request_queue *q,
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char *page)
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{
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return 0;
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}
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static inline ssize_t queue_wbt_class_conf_store(struct request_queue *q,
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const char *page, size_t count)
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{
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return 0;
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}
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static inline int blk_wbt_init(struct gendisk *disk)
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{
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return 0;
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}
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#endif /* CONFIG_BLK_WBT */
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#endif
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