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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 | ||
6a16e9e9 JA |
5 | #include <limits.h> |
6 | ||
e2bb0e58 | 7 | #include "helper_thread.h" |
971caeb1 | 8 | #include "fio_sem.h" |
27357187 | 9 | |
a3b4cf7d | 10 | struct disk_util_stats { |
504bc961 JA |
11 | uint64_t ios[2]; |
12 | uint64_t merges[2]; | |
d09a64a0 | 13 | uint64_t sectors[2]; |
504bc961 JA |
14 | uint64_t ticks[2]; |
15 | uint64_t io_ticks; | |
16 | uint64_t time_in_queue; | |
d09a64a0 JA |
17 | uint64_t msec; |
18 | }; | |
19 | ||
a3b4cf7d JA |
20 | /* |
21 | * Disk utils as read in /sys/block/<dev>/stat | |
22 | */ | |
23 | struct disk_util_stat { | |
24 | uint8_t name[FIO_DU_NAME_SZ]; | |
25 | struct disk_util_stats s; | |
26 | }; | |
27 | ||
d09a64a0 | 28 | struct disk_util_agg { |
504bc961 JA |
29 | uint64_t ios[2]; |
30 | uint64_t merges[2]; | |
d09a64a0 | 31 | uint64_t sectors[2]; |
504bc961 JA |
32 | uint64_t ticks[2]; |
33 | uint64_t io_ticks; | |
34 | uint64_t time_in_queue; | |
d09a64a0 | 35 | uint32_t slavecount; |
504bc961 | 36 | uint32_t pad; |
d09a64a0 | 37 | fio_fp64_t max_util; |
7c9b1bce JA |
38 | }; |
39 | ||
40 | /* | |
41 | * Per-device disk util management | |
42 | */ | |
43 | struct disk_util { | |
44 | struct flist_head list; | |
45 | /* If this disk is a slave, hook it into the master's | |
46 | * list using this head. | |
47 | */ | |
48 | struct flist_head slavelist; | |
49 | ||
7c9b1bce | 50 | char *sysfs_root; |
4b919f77 | 51 | char path[PATH_MAX]; |
7c9b1bce JA |
52 | int major, minor; |
53 | ||
54 | struct disk_util_stat dus; | |
55 | struct disk_util_stat last_dus; | |
56 | ||
d09a64a0 JA |
57 | struct disk_util_agg agg; |
58 | ||
7c9b1bce JA |
59 | /* For software raids, this entry maintains pointers to the |
60 | * entries for the slave devices. The disk_util entries for | |
61 | * the slaves devices should primarily be maintained through | |
62 | * the disk_list list, i.e. for memory allocation and | |
63 | * de-allocation, etc. Whereas this list should be used only | |
64 | * for aggregating a software RAID's disk util figures. | |
65 | */ | |
66 | struct flist_head slaves; | |
67 | ||
8b6a404c | 68 | struct timespec time; |
7c9b1bce | 69 | |
971caeb1 | 70 | struct fio_sem *lock; |
7c9b1bce JA |
71 | unsigned long users; |
72 | }; | |
73 | ||
e99ca81d | 74 | static inline void disk_util_mod(struct disk_util *du, int val) |
7c9b1bce JA |
75 | { |
76 | if (du) { | |
e99ca81d JA |
77 | struct flist_head *n; |
78 | ||
971caeb1 | 79 | fio_sem_down(du->lock); |
e99ca81d JA |
80 | du->users += val; |
81 | ||
82 | flist_for_each(n, &du->slavelist) { | |
83 | struct disk_util *slave; | |
84 | ||
85 | slave = flist_entry(n, struct disk_util, slavelist); | |
86 | slave->users += val; | |
87 | } | |
971caeb1 | 88 | fio_sem_up(du->lock); |
7c9b1bce JA |
89 | } |
90 | } | |
e99ca81d JA |
91 | static inline void disk_util_inc(struct disk_util *du) |
92 | { | |
93 | disk_util_mod(du, 1); | |
94 | } | |
7c9b1bce JA |
95 | |
96 | static inline void disk_util_dec(struct disk_util *du) | |
97 | { | |
e99ca81d | 98 | disk_util_mod(du, -1); |
7c9b1bce JA |
99 | } |
100 | ||
101 | #define DISK_UTIL_MSEC (250) | |
102 | ||
d09a64a0 JA |
103 | extern struct flist_head disk_list; |
104 | ||
7c9b1bce JA |
105 | /* |
106 | * disk util stuff | |
107 | */ | |
108 | #ifdef FIO_HAVE_DISK_UTIL | |
7c9b1bce | 109 | extern void init_disk_util(struct thread_data *); |
9ec7779f JA |
110 | extern int update_io_ticks(void); |
111 | extern void setup_disk_util(void); | |
27357187 | 112 | extern void disk_util_prune_entries(void); |
7c9b1bce | 113 | #else |
9aa6aa64 | 114 | /* keep this as a function to avoid a warning in handle_du() */ |
27357187 | 115 | #define disk_util_prune_entries() |
7c9b1bce | 116 | #define init_disk_util(td) |
9ec7779f | 117 | #define setup_disk_util() |
952b05e0 | 118 | |
9ec7779f JA |
119 | static inline int update_io_ticks(void) |
120 | { | |
e2bb0e58 | 121 | return helper_should_exit(); |
9ec7779f | 122 | } |
7c9b1bce JA |
123 | #endif |
124 | ||
125 | #endif |