4 #include "compiler/compiler.h"
18 #define FIO_IOOPS_VERSION 15
22 IO_U_F_FLIGHT = 1 << 1,
23 IO_U_F_FREE_DEF = 1 << 2,
24 IO_U_F_IN_CUR_DEPTH = 1 << 3,
25 IO_U_F_BUSY_OK = 1 << 4,
26 IO_U_F_TRIMMED = 1 << 5,
27 IO_U_F_BARRIER = 1 << 6,
28 IO_U_F_VER_LIST = 1 << 7,
41 #ifdef CONFIG_POSIXAIO
50 #ifdef CONFIG_SOLARISAIO
53 #ifdef FIO_HAVE_BINJECT
54 struct b_user_cmd buc;
61 struct timeval start_time;
62 struct timeval issue_time;
64 struct fio_file *file;
69 * For replay workloads, we may want to account as a different
70 * IO type than what is being submitted.
72 enum fio_ddir acct_ddir;
75 * Allocated/set buffer and length
78 unsigned long long offset;
82 * Initial seed for generating the buffer contents
84 unsigned long rand_seed;
87 * IO engine state, may be different from above when we get
88 * partial transfers / residual data counts
91 unsigned long xfer_buflen;
94 * Parameter related to pre-filled buffers and
95 * their size to handle variable block sizes.
97 unsigned long buf_filled_len;
103 * io engine private data
111 struct flist_head list;
114 * Callback for io completion
116 int (*end_io)(struct thread_data *, struct io_u *);
120 * io_ops->queue() return values
123 FIO_Q_COMPLETED = 0, /* completed sync */
124 FIO_Q_QUEUED = 1, /* queued, will complete async */
125 FIO_Q_BUSY = 2, /* no more room, call ->commit() */
128 struct ioengine_ops {
129 struct flist_head list;
133 int (*setup)(struct thread_data *);
134 int (*init)(struct thread_data *);
135 int (*prep)(struct thread_data *, struct io_u *);
136 int (*queue)(struct thread_data *, struct io_u *);
137 int (*commit)(struct thread_data *);
138 int (*getevents)(struct thread_data *, unsigned int, unsigned int, struct timespec *);
139 struct io_u *(*event)(struct thread_data *, int);
140 int (*cancel)(struct thread_data *, struct io_u *);
141 void (*cleanup)(struct thread_data *);
142 int (*open_file)(struct thread_data *, struct fio_file *);
143 int (*close_file)(struct thread_data *, struct fio_file *);
144 int (*get_file_size)(struct thread_data *, struct fio_file *);
145 void (*terminate)(struct thread_data *);
146 int (*io_u_init)(struct thread_data *, struct io_u *);
147 void (*io_u_free)(struct thread_data *, struct io_u *);
148 int option_struct_size;
149 struct fio_option *options;
154 enum fio_ioengine_flags {
155 FIO_SYNCIO = 1 << 0, /* io engine has synchronous ->queue */
156 FIO_RAWIO = 1 << 1, /* some sort of direct/raw io */
157 FIO_DISKLESSIO = 1 << 2, /* no disk involved */
158 FIO_NOEXTEND = 1 << 3, /* engine can't extend file */
159 FIO_NODISKUTIL = 1 << 4, /* diskutil can't handle filename */
160 FIO_UNIDIR = 1 << 5, /* engine is uni-directional */
161 FIO_NOIO = 1 << 6, /* thread does only pseudo IO */
162 FIO_PIPEIO = 1 << 7, /* input/output no seekable */
163 FIO_BARRIER = 1 << 8, /* engine supports barriers */
164 FIO_MEMALIGN = 1 << 9, /* engine wants aligned memory */
168 * io engine entry points
170 extern int __must_check td_io_init(struct thread_data *);
171 extern int __must_check td_io_prep(struct thread_data *, struct io_u *);
172 extern int __must_check td_io_queue(struct thread_data *, struct io_u *);
173 extern int __must_check td_io_sync(struct thread_data *, struct fio_file *);
174 extern int __must_check td_io_getevents(struct thread_data *, unsigned int, unsigned int, struct timespec *);
175 extern int __must_check td_io_commit(struct thread_data *);
176 extern int __must_check td_io_open_file(struct thread_data *, struct fio_file *);
177 extern int td_io_close_file(struct thread_data *, struct fio_file *);
178 extern int __must_check td_io_get_file_size(struct thread_data *, struct fio_file *);
180 extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
181 extern void register_ioengine(struct ioengine_ops *);
182 extern void unregister_ioengine(struct ioengine_ops *);
183 extern void free_ioengine(struct thread_data *);
184 extern void close_ioengine(struct thread_data *);
186 extern int fio_show_ioengine_help(const char *engine);
191 #define queue_full(td) flist_empty(&(td)->io_u_freelist)
192 extern struct io_u *__get_io_u(struct thread_data *);
193 extern struct io_u *get_io_u(struct thread_data *);
194 extern void put_io_u(struct thread_data *, struct io_u *);
195 extern void clear_io_u(struct thread_data *, struct io_u *);
196 extern void requeue_io_u(struct thread_data *, struct io_u **);
197 extern int __must_check io_u_sync_complete(struct thread_data *, struct io_u *, uint64_t *);
198 extern int __must_check io_u_queued_complete(struct thread_data *, int, uint64_t *);
199 extern void io_u_queued(struct thread_data *, struct io_u *);
200 extern void io_u_log_error(struct thread_data *, struct io_u *);
201 extern void io_u_mark_depth(struct thread_data *, unsigned int);
202 extern void io_u_fill_buffer(struct thread_data *td, struct io_u *, unsigned int, unsigned int);
203 void io_u_mark_complete(struct thread_data *, unsigned int);
204 void io_u_mark_submit(struct thread_data *, unsigned int);
206 int do_io_u_sync(struct thread_data *, struct io_u *);
207 int do_io_u_trim(struct thread_data *, struct io_u *);
210 static inline void dprint_io_u(struct io_u *io_u, const char *p)
212 struct fio_file *f = io_u->file;
214 dprint(FD_IO, "%s: io_u %p: off=%llu/len=%lu/ddir=%d", p, io_u,
215 (unsigned long long) io_u->offset,
216 io_u->buflen, io_u->ddir);
217 if (fio_debug & (1 << FD_IO)) {
219 log_info("/%s", f->file_name);
225 #define dprint_io_u(io_u, p)
228 static inline enum fio_ddir acct_ddir(struct io_u *io_u)
230 if (io_u->acct_ddir != -1)
231 return io_u->acct_ddir;