4 #define FIO_DU_NAME_SZ 64
6 extern volatile int disk_util_exit;
9 * Disk utils as read in /sys/block/<dev>/stat
11 struct disk_util_stat {
12 uint8_t name[FIO_DU_NAME_SZ];
18 uint32_t time_in_queue;
22 struct disk_util_agg {
28 uint32_t time_in_queue;
34 * Per-device disk util management
37 struct flist_head list;
38 /* If this disk is a slave, hook it into the master's
39 * list using this head.
41 struct flist_head slavelist;
48 struct disk_util_stat dus;
49 struct disk_util_stat last_dus;
51 struct disk_util_agg agg;
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.
60 struct flist_head slaves;
64 struct fio_mutex *lock;
68 static inline void disk_util_mod(struct disk_util *du, int val)
73 fio_mutex_down(du->lock);
76 flist_for_each(n, &du->slavelist) {
77 struct disk_util *slave;
79 slave = flist_entry(n, struct disk_util, slavelist);
82 fio_mutex_up(du->lock);
85 static inline void disk_util_inc(struct disk_util *du)
90 static inline void disk_util_dec(struct disk_util *du)
92 disk_util_mod(du, -1);
95 #define DISK_UTIL_MSEC (250)
97 extern struct flist_head disk_list;
99 extern void wait_for_disk_thread_exit(void);
104 #ifdef FIO_HAVE_DISK_UTIL
105 extern void print_disk_util(struct disk_util_stat *, struct disk_util_agg *, int terse);
106 extern void show_disk_util(int terse, struct json_object *parent);
107 extern void init_disk_util(struct thread_data *);
108 extern int update_io_ticks(void);
109 extern void setup_disk_util(void);
110 extern void disk_util_prune_entries(void);
112 #define print_disk_util(dus, agg, terse)
113 #define show_disk_util(terse, parent)
114 #define disk_util_prune_entries()
115 #define init_disk_util(td)
116 #define setup_disk_util()
117 static inline int update_io_ticks(void)
119 return disk_util_exit;
123 static inline void disk_util_start_exit(void)