Commit | Line | Data |
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7c9b1bce JA |
1 | #ifndef FIO_DISKUTIL_H |
2 | #define FIO_DISKUTIL_H | |
cc372b17 | 3 | #include "json.h" |
d09a64a0 JA |
4 | #define FIO_DU_NAME_SZ 64 |
5 | ||
27357187 JA |
6 | extern volatile int disk_util_exit; |
7 | ||
7c9b1bce JA |
8 | /* |
9 | * Disk utils as read in /sys/block/<dev>/stat | |
10 | */ | |
11 | struct disk_util_stat { | |
d09a64a0 JA |
12 | uint8_t name[FIO_DU_NAME_SZ]; |
13 | uint32_t ios[2]; | |
14 | uint32_t merges[2]; | |
15 | uint64_t sectors[2]; | |
16 | uint32_t ticks[2]; | |
17 | uint32_t io_ticks; | |
18 | uint32_t time_in_queue; | |
19 | uint64_t msec; | |
20 | }; | |
21 | ||
22 | struct disk_util_agg { | |
23 | uint32_t ios[2]; | |
24 | uint32_t merges[2]; | |
25 | uint64_t sectors[2]; | |
26 | uint32_t ticks[2]; | |
27 | uint32_t io_ticks; | |
28 | uint32_t time_in_queue; | |
29 | uint32_t slavecount; | |
30 | fio_fp64_t max_util; | |
7c9b1bce JA |
31 | }; |
32 | ||
33 | /* | |
34 | * Per-device disk util management | |
35 | */ | |
36 | struct disk_util { | |
37 | struct flist_head list; | |
38 | /* If this disk is a slave, hook it into the master's | |
39 | * list using this head. | |
40 | */ | |
41 | struct flist_head slavelist; | |
42 | ||
43 | char *name; | |
44 | char *sysfs_root; | |
4b919f77 | 45 | char path[PATH_MAX]; |
7c9b1bce JA |
46 | int major, minor; |
47 | ||
48 | struct disk_util_stat dus; | |
49 | struct disk_util_stat last_dus; | |
50 | ||
d09a64a0 JA |
51 | struct disk_util_agg agg; |
52 | ||
7c9b1bce JA |
53 | /* For software raids, this entry maintains pointers to the |
54 | * entries for the slave devices. The disk_util entries for | |
55 | * the slaves devices should primarily be maintained through | |
56 | * the disk_list list, i.e. for memory allocation and | |
57 | * de-allocation, etc. Whereas this list should be used only | |
58 | * for aggregating a software RAID's disk util figures. | |
59 | */ | |
60 | struct flist_head slaves; | |
61 | ||
7c9b1bce JA |
62 | struct timeval time; |
63 | ||
64 | struct fio_mutex *lock; | |
65 | unsigned long users; | |
66 | }; | |
67 | ||
e99ca81d | 68 | static inline void disk_util_mod(struct disk_util *du, int val) |
7c9b1bce JA |
69 | { |
70 | if (du) { | |
e99ca81d JA |
71 | struct flist_head *n; |
72 | ||
7c9b1bce | 73 | fio_mutex_down(du->lock); |
e99ca81d JA |
74 | du->users += val; |
75 | ||
76 | flist_for_each(n, &du->slavelist) { | |
77 | struct disk_util *slave; | |
78 | ||
79 | slave = flist_entry(n, struct disk_util, slavelist); | |
80 | slave->users += val; | |
81 | } | |
7c9b1bce JA |
82 | fio_mutex_up(du->lock); |
83 | } | |
84 | } | |
e99ca81d JA |
85 | static inline void disk_util_inc(struct disk_util *du) |
86 | { | |
87 | disk_util_mod(du, 1); | |
88 | } | |
7c9b1bce JA |
89 | |
90 | static inline void disk_util_dec(struct disk_util *du) | |
91 | { | |
e99ca81d | 92 | disk_util_mod(du, -1); |
7c9b1bce JA |
93 | } |
94 | ||
95 | #define DISK_UTIL_MSEC (250) | |
96 | ||
d09a64a0 JA |
97 | extern struct flist_head disk_list; |
98 | ||
9ec7779f JA |
99 | extern void wait_for_disk_thread_exit(void); |
100 | ||
7c9b1bce JA |
101 | /* |
102 | * disk util stuff | |
103 | */ | |
104 | #ifdef FIO_HAVE_DISK_UTIL | |
f2f788dd | 105 | extern void print_disk_util(struct disk_util_stat *, struct disk_util_agg *, int terse); |
cc372b17 | 106 | extern void show_disk_util(int terse, struct json_object *parent); |
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 |
f2f788dd | 112 | #define print_disk_util(dus, agg, terse) |
cc372b17 | 113 | #define show_disk_util(terse, parent) |
27357187 | 114 | #define disk_util_prune_entries() |
7c9b1bce | 115 | #define init_disk_util(td) |
9ec7779f JA |
116 | #define setup_disk_util() |
117 | static inline int update_io_ticks(void) | |
118 | { | |
27357187 | 119 | return disk_util_exit; |
9ec7779f | 120 | } |
7c9b1bce JA |
121 | #endif |
122 | ||
27357187 JA |
123 | static inline void disk_util_start_exit(void) |
124 | { | |
125 | disk_util_exit = 1; | |
126 | } | |
127 | ||
7c9b1bce | 128 | #endif |