glusterfs: update for new API
[fio.git] / zbd.h
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1/*
2 * Copyright (C) 2018 Western Digital Corporation or its affiliates.
3 *
4 * This file is released under the GPL.
5 */
6
7#ifndef FIO_ZBD_H
8#define FIO_ZBD_H
9
10#include <inttypes.h>
59b07544 11#include "fio.h" /* FIO_MAX_OPEN_ZBD_ZONES */
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12#ifdef CONFIG_LINUX_BLKZONED
13#include <linux/blkzoned.h>
14#endif
15
16struct fio_file;
17
18/*
19 * Zoned block device models.
20 */
21enum blk_zoned_model {
22 ZBD_DM_NONE, /* Regular block device */
23 ZBD_DM_HOST_AWARE, /* Host-aware zoned block device */
24 ZBD_DM_HOST_MANAGED, /* Host-managed zoned block device */
25};
26
27enum io_u_action {
28 io_u_accept = 0,
29 io_u_eof = 1,
30};
31
32/**
33 * struct fio_zone_info - information about a single ZBD zone
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34 * @start: zone start location (bytes)
35 * @wp: zone write pointer location (bytes)
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36 * @verify_block: number of blocks that have been verified for this zone
37 * @mutex: protects the modifiable members in this structure
38 * @type: zone type (BLK_ZONE_TYPE_*)
39 * @cond: zone state (BLK_ZONE_COND_*)
40 * @open: whether or not this zone is currently open. Only relevant if
41 * max_open_zones > 0.
42 * @reset_zone: whether or not this zone should be reset before writing to it
43 */
44struct fio_zone_info {
45#ifdef CONFIG_LINUX_BLKZONED
46 pthread_mutex_t mutex;
47 uint64_t start;
48 uint64_t wp;
49 uint32_t verify_block;
50 enum blk_zone_type type:2;
51 enum blk_zone_cond cond:4;
52 unsigned int open:1;
53 unsigned int reset_zone:1;
54#endif
55};
56
57/**
58 * zoned_block_device_info - zoned block device characteristics
59 * @model: Device model.
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60 * @mutex: Protects the modifiable members in this structure (refcount and
61 * num_open_zones).
bfbdd35b 62 * @zone_size: size of a single zone in units of 512 bytes
a7c2b6fc 63 * @sectors_with_data: total size of data in all zones in units of 512 bytes
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64 * @zone_size_log2: log2 of the zone size in bytes if it is a power of 2 or 0
65 * if the zone size is not a power of 2.
66 * @nr_zones: number of zones
67 * @refcount: number of fio files that share this structure
59b07544 68 * @num_open_zones: number of open zones
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69 * @write_cnt: Number of writes since the latest zone reset triggered by
70 * the zone_reset_frequency fio job parameter.
59b07544 71 * @open_zones: zone numbers of open zones
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72 * @zone_info: description of the individual zones
73 *
74 * Only devices for which all zones have the same size are supported.
75 * Note: if the capacity is not a multiple of the zone size then the last zone
76 * will be smaller than 'zone_size'.
77 */
78struct zoned_block_device_info {
79 enum blk_zoned_model model;
80 pthread_mutex_t mutex;
81 uint64_t zone_size;
a7c2b6fc 82 uint64_t sectors_with_data;
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83 uint32_t zone_size_log2;
84 uint32_t nr_zones;
85 uint32_t refcount;
59b07544 86 uint32_t num_open_zones;
a7c2b6fc 87 uint32_t write_cnt;
59b07544 88 uint32_t open_zones[FIO_MAX_OPEN_ZBD_ZONES];
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89 struct fio_zone_info zone_info[0];
90};
91
92#ifdef CONFIG_LINUX_BLKZONED
93void zbd_free_zone_info(struct fio_file *f);
94int zbd_init(struct thread_data *td);
95void zbd_file_reset(struct thread_data *td, struct fio_file *f);
96bool zbd_unaligned_write(int error_code);
97enum io_u_action zbd_adjust_block(struct thread_data *td, struct io_u *io_u);
fd5d733f 98char *zbd_write_status(const struct thread_stat *ts);
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99
100static inline void zbd_queue_io_u(struct io_u *io_u, enum fio_q_status status)
101{
102 if (io_u->zbd_queue_io) {
103 io_u->zbd_queue_io(io_u, status, io_u->error == 0);
104 io_u->zbd_queue_io = NULL;
105 }
106}
107
108static inline void zbd_put_io_u(struct io_u *io_u)
109{
110 if (io_u->zbd_put_io) {
111 io_u->zbd_put_io(io_u);
112 io_u->zbd_queue_io = NULL;
113 io_u->zbd_put_io = NULL;
114 }
115}
116
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117#else
118static inline void zbd_free_zone_info(struct fio_file *f)
119{
120}
121
122static inline int zbd_init(struct thread_data *td)
123{
124 return 0;
125}
126
127static inline void zbd_file_reset(struct thread_data *td, struct fio_file *f)
128{
129}
130
131static inline bool zbd_unaligned_write(int error_code)
132{
133 return false;
134}
135
136static inline enum io_u_action zbd_adjust_block(struct thread_data *td,
137 struct io_u *io_u)
138{
139 return io_u_accept;
140}
141
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142static inline char *zbd_write_status(const struct thread_stat *ts)
143{
144 return NULL;
145}
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146
147static inline void zbd_queue_io_u(struct io_u *io_u,
148 enum fio_q_status status) {}
149static inline void zbd_put_io_u(struct io_u *io_u) {}
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150#endif
151
152#endif /* FIO_ZBD_H */