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7c9b1bce JA |
1 | #ifndef FIO_DISKUTIL_H |
2 | #define FIO_DISKUTIL_H | |
3 | ||
d09a64a0 JA |
4 | #define FIO_DU_NAME_SZ 64 |
5 | ||
7c9b1bce JA |
6 | /* |
7 | * Disk utils as read in /sys/block/<dev>/stat | |
8 | */ | |
9 | struct disk_util_stat { | |
d09a64a0 JA |
10 | uint8_t name[FIO_DU_NAME_SZ]; |
11 | uint32_t ios[2]; | |
12 | uint32_t merges[2]; | |
13 | uint64_t sectors[2]; | |
14 | uint32_t ticks[2]; | |
15 | uint32_t io_ticks; | |
16 | uint32_t time_in_queue; | |
17 | uint64_t msec; | |
18 | }; | |
19 | ||
20 | struct disk_util_agg { | |
21 | uint32_t ios[2]; | |
22 | uint32_t merges[2]; | |
23 | uint64_t sectors[2]; | |
24 | uint32_t ticks[2]; | |
25 | uint32_t io_ticks; | |
26 | uint32_t time_in_queue; | |
27 | uint32_t slavecount; | |
28 | fio_fp64_t max_util; | |
7c9b1bce JA |
29 | }; |
30 | ||
31 | /* | |
32 | * Per-device disk util management | |
33 | */ | |
34 | struct disk_util { | |
35 | struct flist_head list; | |
36 | /* If this disk is a slave, hook it into the master's | |
37 | * list using this head. | |
38 | */ | |
39 | struct flist_head slavelist; | |
40 | ||
41 | char *name; | |
42 | char *sysfs_root; | |
43 | char path[256]; | |
44 | int major, minor; | |
45 | ||
46 | struct disk_util_stat dus; | |
47 | struct disk_util_stat last_dus; | |
48 | ||
d09a64a0 JA |
49 | struct disk_util_agg agg; |
50 | ||
7c9b1bce JA |
51 | /* For software raids, this entry maintains pointers to the |
52 | * entries for the slave devices. The disk_util entries for | |
53 | * the slaves devices should primarily be maintained through | |
54 | * the disk_list list, i.e. for memory allocation and | |
55 | * de-allocation, etc. Whereas this list should be used only | |
56 | * for aggregating a software RAID's disk util figures. | |
57 | */ | |
58 | struct flist_head slaves; | |
59 | ||
7c9b1bce JA |
60 | struct timeval time; |
61 | ||
62 | struct fio_mutex *lock; | |
63 | unsigned long users; | |
64 | }; | |
65 | ||
e99ca81d | 66 | static inline void disk_util_mod(struct disk_util *du, int val) |
7c9b1bce JA |
67 | { |
68 | if (du) { | |
e99ca81d JA |
69 | struct flist_head *n; |
70 | ||
7c9b1bce | 71 | fio_mutex_down(du->lock); |
e99ca81d JA |
72 | du->users += val; |
73 | ||
74 | flist_for_each(n, &du->slavelist) { | |
75 | struct disk_util *slave; | |
76 | ||
77 | slave = flist_entry(n, struct disk_util, slavelist); | |
78 | slave->users += val; | |
79 | } | |
7c9b1bce JA |
80 | fio_mutex_up(du->lock); |
81 | } | |
82 | } | |
e99ca81d JA |
83 | static inline void disk_util_inc(struct disk_util *du) |
84 | { | |
85 | disk_util_mod(du, 1); | |
86 | } | |
7c9b1bce JA |
87 | |
88 | static inline void disk_util_dec(struct disk_util *du) | |
89 | { | |
e99ca81d | 90 | disk_util_mod(du, -1); |
7c9b1bce JA |
91 | } |
92 | ||
93 | #define DISK_UTIL_MSEC (250) | |
94 | ||
d09a64a0 JA |
95 | extern struct flist_head disk_list; |
96 | ||
9ec7779f JA |
97 | extern void wait_for_disk_thread_exit(void); |
98 | ||
7c9b1bce JA |
99 | /* |
100 | * disk util stuff | |
101 | */ | |
102 | #ifdef FIO_HAVE_DISK_UTIL | |
f2f788dd JA |
103 | extern void print_disk_util(struct disk_util_stat *, struct disk_util_agg *, int terse); |
104 | extern void show_disk_util(int terse); | |
d09a64a0 | 105 | extern void free_disk_util(void); |
7c9b1bce | 106 | extern void init_disk_util(struct thread_data *); |
9ec7779f JA |
107 | extern int update_io_ticks(void); |
108 | extern void setup_disk_util(void); | |
7c9b1bce | 109 | #else |
f2f788dd JA |
110 | #define print_disk_util(dus, agg, terse) |
111 | #define show_disk_util(terse) | |
d09a64a0 | 112 | #define free_disk_util() |
7c9b1bce | 113 | #define init_disk_util(td) |
9ec7779f JA |
114 | #define setup_disk_util() |
115 | static inline int update_io_ticks(void) | |
116 | { | |
117 | return 0; | |
118 | } | |
7c9b1bce JA |
119 | #endif |
120 | ||
121 | #endif |