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7c9b1bce JA |
1 | #ifndef FIO_DISKUTIL_H |
2 | #define FIO_DISKUTIL_H | |
d09a64a0 JA |
3 | #define FIO_DU_NAME_SZ 64 |
4 | ||
e2bb0e58 | 5 | #include "helper_thread.h" |
971caeb1 | 6 | #include "fio_sem.h" |
27357187 | 7 | |
a3b4cf7d | 8 | struct disk_util_stats { |
504bc961 JA |
9 | uint64_t ios[2]; |
10 | uint64_t merges[2]; | |
d09a64a0 | 11 | uint64_t sectors[2]; |
504bc961 JA |
12 | uint64_t ticks[2]; |
13 | uint64_t io_ticks; | |
14 | uint64_t time_in_queue; | |
d09a64a0 JA |
15 | uint64_t msec; |
16 | }; | |
17 | ||
a3b4cf7d JA |
18 | /* |
19 | * Disk utils as read in /sys/block/<dev>/stat | |
20 | */ | |
21 | struct disk_util_stat { | |
22 | uint8_t name[FIO_DU_NAME_SZ]; | |
23 | struct disk_util_stats s; | |
24 | }; | |
25 | ||
d09a64a0 | 26 | struct disk_util_agg { |
504bc961 JA |
27 | uint64_t ios[2]; |
28 | uint64_t merges[2]; | |
d09a64a0 | 29 | uint64_t sectors[2]; |
504bc961 JA |
30 | uint64_t ticks[2]; |
31 | uint64_t io_ticks; | |
32 | uint64_t time_in_queue; | |
d09a64a0 | 33 | uint32_t slavecount; |
504bc961 | 34 | uint32_t pad; |
d09a64a0 | 35 | fio_fp64_t max_util; |
7c9b1bce JA |
36 | }; |
37 | ||
38 | /* | |
39 | * Per-device disk util management | |
40 | */ | |
41 | struct disk_util { | |
42 | struct flist_head list; | |
43 | /* If this disk is a slave, hook it into the master's | |
44 | * list using this head. | |
45 | */ | |
46 | struct flist_head slavelist; | |
47 | ||
7c9b1bce | 48 | char *sysfs_root; |
4b919f77 | 49 | char path[PATH_MAX]; |
7c9b1bce JA |
50 | int major, minor; |
51 | ||
52 | struct disk_util_stat dus; | |
53 | struct disk_util_stat last_dus; | |
54 | ||
d09a64a0 JA |
55 | struct disk_util_agg agg; |
56 | ||
7c9b1bce JA |
57 | /* For software raids, this entry maintains pointers to the |
58 | * entries for the slave devices. The disk_util entries for | |
59 | * the slaves devices should primarily be maintained through | |
60 | * the disk_list list, i.e. for memory allocation and | |
61 | * de-allocation, etc. Whereas this list should be used only | |
62 | * for aggregating a software RAID's disk util figures. | |
63 | */ | |
64 | struct flist_head slaves; | |
65 | ||
8b6a404c | 66 | struct timespec time; |
7c9b1bce | 67 | |
971caeb1 | 68 | struct fio_sem *lock; |
7c9b1bce JA |
69 | unsigned long users; |
70 | }; | |
71 | ||
e99ca81d | 72 | static inline void disk_util_mod(struct disk_util *du, int val) |
7c9b1bce JA |
73 | { |
74 | if (du) { | |
e99ca81d JA |
75 | struct flist_head *n; |
76 | ||
971caeb1 | 77 | fio_sem_down(du->lock); |
e99ca81d JA |
78 | du->users += val; |
79 | ||
80 | flist_for_each(n, &du->slavelist) { | |
81 | struct disk_util *slave; | |
82 | ||
83 | slave = flist_entry(n, struct disk_util, slavelist); | |
84 | slave->users += val; | |
85 | } | |
971caeb1 | 86 | fio_sem_up(du->lock); |
7c9b1bce JA |
87 | } |
88 | } | |
e99ca81d JA |
89 | static inline void disk_util_inc(struct disk_util *du) |
90 | { | |
91 | disk_util_mod(du, 1); | |
92 | } | |
7c9b1bce JA |
93 | |
94 | static inline void disk_util_dec(struct disk_util *du) | |
95 | { | |
e99ca81d | 96 | disk_util_mod(du, -1); |
7c9b1bce JA |
97 | } |
98 | ||
99 | #define DISK_UTIL_MSEC (250) | |
100 | ||
d09a64a0 JA |
101 | extern struct flist_head disk_list; |
102 | ||
7c9b1bce JA |
103 | /* |
104 | * disk util stuff | |
105 | */ | |
106 | #ifdef FIO_HAVE_DISK_UTIL | |
7c9b1bce | 107 | extern void init_disk_util(struct thread_data *); |
9ec7779f JA |
108 | extern int update_io_ticks(void); |
109 | extern void setup_disk_util(void); | |
27357187 | 110 | extern void disk_util_prune_entries(void); |
7c9b1bce | 111 | #else |
9aa6aa64 | 112 | /* keep this as a function to avoid a warning in handle_du() */ |
27357187 | 113 | #define disk_util_prune_entries() |
7c9b1bce | 114 | #define init_disk_util(td) |
9ec7779f | 115 | #define setup_disk_util() |
952b05e0 | 116 | |
9ec7779f JA |
117 | static inline int update_io_ticks(void) |
118 | { | |
e2bb0e58 | 119 | return helper_should_exit(); |
9ec7779f | 120 | } |
7c9b1bce JA |
121 | #endif |
122 | ||
123 | #endif |