4 #define FIO_DU_NAME_SZ 64
6 extern volatile int helper_exit;
8 struct disk_util_stats {
14 uint64_t time_in_queue;
19 * Disk utils as read in /sys/block/<dev>/stat
21 struct disk_util_stat {
22 uint8_t name[FIO_DU_NAME_SZ];
23 struct disk_util_stats s;
26 struct disk_util_agg {
32 uint64_t time_in_queue;
39 * Per-device disk util management
42 struct flist_head list;
43 /* If this disk is a slave, hook it into the master's
44 * list using this head.
46 struct flist_head slavelist;
53 struct disk_util_stat dus;
54 struct disk_util_stat last_dus;
56 struct disk_util_agg agg;
58 /* For software raids, this entry maintains pointers to the
59 * entries for the slave devices. The disk_util entries for
60 * the slaves devices should primarily be maintained through
61 * the disk_list list, i.e. for memory allocation and
62 * de-allocation, etc. Whereas this list should be used only
63 * for aggregating a software RAID's disk util figures.
65 struct flist_head slaves;
69 struct fio_mutex *lock;
73 static inline void disk_util_mod(struct disk_util *du, int val)
78 fio_mutex_down(du->lock);
81 flist_for_each(n, &du->slavelist) {
82 struct disk_util *slave;
84 slave = flist_entry(n, struct disk_util, slavelist);
87 fio_mutex_up(du->lock);
90 static inline void disk_util_inc(struct disk_util *du)
95 static inline void disk_util_dec(struct disk_util *du)
97 disk_util_mod(du, -1);
100 #define DISK_UTIL_MSEC (250)
102 extern struct flist_head disk_list;
107 #ifdef FIO_HAVE_DISK_UTIL
108 extern void print_disk_util(struct disk_util_stat *, struct disk_util_agg *, int terse);
109 extern void show_disk_util(int terse, struct json_object *parent);
110 extern void json_array_add_disk_util(struct disk_util_stat *dus,
111 struct disk_util_agg *agg, struct json_array *parent);
112 extern void init_disk_util(struct thread_data *);
113 extern int update_io_ticks(void);
114 extern void setup_disk_util(void);
115 extern void disk_util_prune_entries(void);
117 static inline void print_disk_util(struct disk_util_stat *du,
118 struct disk_util_agg *agg, int terse)
121 #define show_disk_util(terse, parent)
122 #define disk_util_prune_entries()
123 #define init_disk_util(td)
124 #define setup_disk_util()
125 #define json_array_add_disk_util(dus, agg, parent)
127 static inline int update_io_ticks(void)