projects / fio.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c9b1bce JA |
1 | #ifndef FIO_DISKUTIL_H |
| 2 | #define FIO_DISKUTIL_H | |
| 3 | ||
| 4 | /* | |
| 5 | * Disk utils as read in /sys/block/<dev>/stat | |
| 6 | */ | |
| 7 | struct disk_util_stat { | |
| 8 | unsigned ios[2]; | |
| 9 | unsigned merges[2]; | |
| 10 | unsigned long long sectors[2]; | |
| 11 | unsigned ticks[2]; | |
| 12 | unsigned io_ticks; | |
| 13 | unsigned time_in_queue; | |
| 14 | }; | |
| 15 | ||
| 16 | /* | |
| 17 | * Per-device disk util management | |
| 18 | */ | |
| 19 | struct disk_util { | |
| 20 | struct flist_head list; | |
| 21 | /* If this disk is a slave, hook it into the master's | |
| 22 | * list using this head. | |
| 23 | */ | |
| 24 | struct flist_head slavelist; | |
| 25 | ||
| 26 | char *name; | |
| 27 | char *sysfs_root; | |
| 28 | char path[256]; | |
| 29 | int major, minor; | |
| 30 | ||
| 31 | struct disk_util_stat dus; | |
| 32 | struct disk_util_stat last_dus; | |
| 33 | ||
| 34 | /* For software raids, this entry maintains pointers to the | |
| 35 | * entries for the slave devices. The disk_util entries for | |
| 36 | * the slaves devices should primarily be maintained through | |
| 37 | * the disk_list list, i.e. for memory allocation and | |
| 38 | * de-allocation, etc. Whereas this list should be used only | |
| 39 | * for aggregating a software RAID's disk util figures. | |
| 40 | */ | |
| 41 | struct flist_head slaves; | |
| 42 | ||
| 43 | unsigned long msec; | |
| 44 | struct timeval time; | |
| 45 | ||
| 46 | struct fio_mutex *lock; | |
| 47 | unsigned long users; | |
| 48 | }; | |
| 49 | ||
| e99ca81d | 50 | static inline void disk_util_mod(struct disk_util *du, int val) |
| 7c9b1bce JA |
51 | { |
| 52 | if (du) { | |
| e99ca81d JA |
53 | struct flist_head *n; |
| 54 | ||
| 7c9b1bce | 55 | fio_mutex_down(du->lock); |
| e99ca81d JA |
56 | du->users += val; |
| 57 | ||
| 58 | flist_for_each(n, &du->slavelist) { | |
| 59 | struct disk_util *slave; | |
| 60 | ||
| 61 | slave = flist_entry(n, struct disk_util, slavelist); | |
| 62 | slave->users += val; | |
| 63 | } | |
| 7c9b1bce JA |
64 | fio_mutex_up(du->lock); |
| 65 | } | |
| 66 | } | |
| e99ca81d JA |
67 | static inline void disk_util_inc(struct disk_util *du) |
| 68 | { | |
| 69 | disk_util_mod(du, 1); | |
| 70 | } | |
| 7c9b1bce JA |
71 | |
| 72 | static inline void disk_util_dec(struct disk_util *du) | |
| 73 | { | |
| e99ca81d | 74 | disk_util_mod(du, -1); |
| 7c9b1bce JA |
75 | } |
| 76 | ||
| 77 | #define DISK_UTIL_MSEC (250) | |
| 78 | ||
| 79 | /* | |
| 80 | * disk util stuff | |
| 81 | */ | |
| 82 | #ifdef FIO_HAVE_DISK_UTIL | |
| 83 | extern void show_disk_util(void); | |
| 84 | extern void init_disk_util(struct thread_data *); | |
| 85 | extern void update_io_ticks(void); | |
| 86 | #else | |
| 87 | #define show_disk_util() | |
| 88 | #define init_disk_util(td) | |
| 89 | #define update_io_ticks() | |
| 90 | #endif | |
| 91 | ||
| 92 | #endif |