| #ifndef FIO_IOENGINE_H |
| #define FIO_IOENGINE_H |
| |
| #include <stddef.h> |
| |
| #include "compiler/compiler.h" |
| #include "flist.h" |
| #include "io_u.h" |
| #include "zbd_types.h" |
| |
| #define FIO_IOOPS_VERSION 29 |
| |
| #ifndef CONFIG_DYNAMIC_ENGINES |
| #define FIO_STATIC static |
| #else |
| #define FIO_STATIC |
| #endif |
| |
| /* |
| * io_ops->queue() return values |
| */ |
| enum fio_q_status { |
| FIO_Q_COMPLETED = 0, /* completed sync */ |
| FIO_Q_QUEUED = 1, /* queued, will complete async */ |
| FIO_Q_BUSY = 2, /* no more room, call ->commit() */ |
| }; |
| |
| struct ioengine_ops { |
| struct flist_head list; |
| const char *name; |
| int version; |
| int flags; |
| void *dlhandle; |
| int (*setup)(struct thread_data *); |
| int (*init)(struct thread_data *); |
| int (*post_init)(struct thread_data *); |
| int (*prep)(struct thread_data *, struct io_u *); |
| enum fio_q_status (*queue)(struct thread_data *, struct io_u *); |
| int (*commit)(struct thread_data *); |
| int (*getevents)(struct thread_data *, unsigned int, unsigned int, const struct timespec *); |
| struct io_u *(*event)(struct thread_data *, int); |
| char *(*errdetails)(struct io_u *); |
| int (*cancel)(struct thread_data *, struct io_u *); |
| void (*cleanup)(struct thread_data *); |
| int (*open_file)(struct thread_data *, struct fio_file *); |
| int (*close_file)(struct thread_data *, struct fio_file *); |
| int (*invalidate)(struct thread_data *, struct fio_file *); |
| int (*unlink_file)(struct thread_data *, struct fio_file *); |
| int (*get_file_size)(struct thread_data *, struct fio_file *); |
| int (*prepopulate_file)(struct thread_data *, struct fio_file *); |
| void (*terminate)(struct thread_data *); |
| int (*iomem_alloc)(struct thread_data *, size_t); |
| void (*iomem_free)(struct thread_data *); |
| int (*io_u_init)(struct thread_data *, struct io_u *); |
| void (*io_u_free)(struct thread_data *, struct io_u *); |
| int (*get_zoned_model)(struct thread_data *td, |
| struct fio_file *f, enum zbd_zoned_model *); |
| int (*report_zones)(struct thread_data *, struct fio_file *, |
| uint64_t, struct zbd_zone *, unsigned int); |
| int (*reset_wp)(struct thread_data *, struct fio_file *, |
| uint64_t, uint64_t); |
| int option_struct_size; |
| struct fio_option *options; |
| }; |
| |
| enum fio_ioengine_flags { |
| FIO_SYNCIO = 1 << 0, /* io engine has synchronous ->queue */ |
| FIO_RAWIO = 1 << 1, /* some sort of direct/raw io */ |
| FIO_DISKLESSIO = 1 << 2, /* no disk involved */ |
| FIO_NOEXTEND = 1 << 3, /* engine can't extend file */ |
| FIO_NODISKUTIL = 1 << 4, /* diskutil can't handle filename */ |
| FIO_UNIDIR = 1 << 5, /* engine is uni-directional */ |
| FIO_NOIO = 1 << 6, /* thread does only pseudo IO */ |
| FIO_PIPEIO = 1 << 7, /* input/output no seekable */ |
| FIO_BARRIER = 1 << 8, /* engine supports barriers */ |
| FIO_MEMALIGN = 1 << 9, /* engine wants aligned memory */ |
| FIO_BIT_BASED = 1 << 10, /* engine uses a bit base (e.g. uses Kbit as opposed to KB) */ |
| FIO_FAKEIO = 1 << 11, /* engine pretends to do IO */ |
| FIO_NOSTATS = 1 << 12, /* don't do IO stats */ |
| FIO_NOFILEHASH = 1 << 13, /* doesn't hash the files for lookup later. */ |
| FIO_ASYNCIO_SYNC_TRIM |
| = 1 << 14, /* io engine has async ->queue except for trim */ |
| FIO_NO_OFFLOAD = 1 << 15, /* no async offload */ |
| }; |
| |
| /* |
| * External engine defined symbol to fill in the engine ops structure |
| */ |
| typedef void (*get_ioengine_t)(struct ioengine_ops **); |
| |
| /* |
| * io engine entry points |
| */ |
| extern int __must_check td_io_init(struct thread_data *); |
| extern int __must_check td_io_prep(struct thread_data *, struct io_u *); |
| extern enum fio_q_status __must_check td_io_queue(struct thread_data *, struct io_u *); |
| extern int __must_check td_io_getevents(struct thread_data *, unsigned int, unsigned int, const struct timespec *); |
| extern void td_io_commit(struct thread_data *); |
| extern int __must_check td_io_open_file(struct thread_data *, struct fio_file *); |
| extern int td_io_close_file(struct thread_data *, struct fio_file *); |
| extern int td_io_unlink_file(struct thread_data *, struct fio_file *); |
| extern int __must_check td_io_get_file_size(struct thread_data *, struct fio_file *); |
| |
| extern struct ioengine_ops *load_ioengine(struct thread_data *); |
| extern void register_ioengine(struct ioengine_ops *); |
| extern void unregister_ioengine(struct ioengine_ops *); |
| extern void free_ioengine(struct thread_data *); |
| extern void close_ioengine(struct thread_data *); |
| |
| extern int fio_show_ioengine_help(const char *engine); |
| |
| #endif |