| 1 | /* |
| 2 | * IO priority handling declarations and helper functions common to the |
| 3 | * libaio and io_uring engines. |
| 4 | */ |
| 5 | |
| 6 | #ifndef FIO_CMDPRIO_H |
| 7 | #define FIO_CMDPRIO_H |
| 8 | |
| 9 | #include "../fio.h" |
| 10 | |
| 11 | /* read and writes only, no trim */ |
| 12 | #define CMDPRIO_RWDIR_CNT 2 |
| 13 | |
| 14 | enum { |
| 15 | CMDPRIO_MODE_NONE, |
| 16 | CMDPRIO_MODE_PERC, |
| 17 | CMDPRIO_MODE_BSSPLIT, |
| 18 | }; |
| 19 | |
| 20 | struct cmdprio_prio { |
| 21 | int32_t prio; |
| 22 | uint32_t perc; |
| 23 | uint16_t clat_prio_index; |
| 24 | }; |
| 25 | |
| 26 | struct cmdprio_bsprio { |
| 27 | uint64_t bs; |
| 28 | uint32_t tot_perc; |
| 29 | unsigned int nr_prios; |
| 30 | struct cmdprio_prio *prios; |
| 31 | }; |
| 32 | |
| 33 | struct cmdprio_bsprio_desc { |
| 34 | struct cmdprio_bsprio *bsprios; |
| 35 | unsigned int nr_bsprios; |
| 36 | }; |
| 37 | |
| 38 | struct cmdprio_options { |
| 39 | unsigned int percentage[CMDPRIO_RWDIR_CNT]; |
| 40 | unsigned int class[CMDPRIO_RWDIR_CNT]; |
| 41 | unsigned int level[CMDPRIO_RWDIR_CNT]; |
| 42 | char *bssplit_str; |
| 43 | }; |
| 44 | |
| 45 | struct cmdprio { |
| 46 | struct cmdprio_options *options; |
| 47 | struct cmdprio_prio perc_entry[CMDPRIO_RWDIR_CNT]; |
| 48 | struct cmdprio_bsprio_desc bsprio_desc[CMDPRIO_RWDIR_CNT]; |
| 49 | unsigned int mode; |
| 50 | }; |
| 51 | |
| 52 | bool fio_cmdprio_set_ioprio(struct thread_data *td, struct cmdprio *cmdprio, |
| 53 | struct io_u *io_u); |
| 54 | |
| 55 | void fio_cmdprio_cleanup(struct cmdprio *cmdprio); |
| 56 | |
| 57 | int fio_cmdprio_init(struct thread_data *td, struct cmdprio *cmdprio, |
| 58 | struct cmdprio_options *options); |
| 59 | |
| 60 | #endif |