LXR linux/block/blk-mq-debugfs.h

   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
   9struct blk_mq_debugfs_attr {
  10        const char *name;
  11        umode_t mode;
  12        int (*show)(void *, struct seq_file *);
  13        ssize_t (*write)(void *, const char __user *, size_t, loff_t *);
  14        /* Set either .show or .seq_ops. */
  15        const struct seq_operations *seq_ops;
  16};
  17
  18int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq);
  19int blk_mq_debugfs_rq_show(struct seq_file *m, void *v);
  20
  21int blk_mq_debugfs_register(struct request_queue *q);
  22void blk_mq_debugfs_unregister(struct request_queue *q);
  23int blk_mq_debugfs_register_hctx(struct request_queue *q,
  24                                 struct blk_mq_hw_ctx *hctx);
  25void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx);
  26int blk_mq_debugfs_register_hctxs(struct request_queue *q);
  27void blk_mq_debugfs_unregister_hctxs(struct request_queue *q);
  28
  29int blk_mq_debugfs_register_sched(struct request_queue *q);
  30void blk_mq_debugfs_unregister_sched(struct request_queue *q);
  31int blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
  32                                       struct blk_mq_hw_ctx *hctx);
  33void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx);
  34
  35int blk_mq_debugfs_register_rqos(struct rq_qos *rqos);
  36void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos);
  37void blk_mq_debugfs_unregister_queue_rqos(struct request_queue *q);
  38#else
  39static inline int blk_mq_debugfs_register(struct request_queue *q)
  40{
  41        return 0;
  42}
  43
  44static inline void blk_mq_debugfs_unregister(struct request_queue *q)
  45{
  46}
  47
  48static inline int blk_mq_debugfs_register_hctx(struct request_queue *q,
  49                                               struct blk_mq_hw_ctx *hctx)
  50{
  51        return 0;
  52}
  53
  54static inline void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx)
  55{
  56}
  57
  58static inline int blk_mq_debugfs_register_hctxs(struct request_queue *q)
  59{
  60        return 0;
  61}
  62
  63static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q)
  64{
  65}
  66
  67static inline int blk_mq_debugfs_register_sched(struct request_queue *q)
  68{
  69        return 0;
  70}
  71
  72static inline void blk_mq_debugfs_unregister_sched(struct request_queue *q)
  73{
  74}
  75
  76static inline int blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
  77                                                     struct blk_mq_hw_ctx *hctx)
  78{
  79        return 0;
  80}
  81
  82static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx)
  83{
  84}
  85
  86static inline int blk_mq_debugfs_register_rqos(struct rq_qos *rqos)
  87{
  88        return 0;
  89}
  90
  91static inline void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos)
  92{
  93}
  94
  95static inline void blk_mq_debugfs_unregister_queue_rqos(struct request_queue *q)
  96{
  97}
  98#endif
  99
 100#ifdef CONFIG_BLK_DEBUG_FS_ZONED
 101int queue_zone_wlock_show(void *data, struct seq_file *m);
 102#else
 103static inline int queue_zone_wlock_show(void *data, struct seq_file *m)
 104{
 105        return 0;
 106}
 107#endif
 108
 109#endif
 110