[fio.git] / diskutil.h

#ifndef FIO_DISKUTIL_H
#define FIO_DISKUTIL_H
#include "json.h"
#define FIO_DU_NAME_SZ		64

extern volatile int helper_exit;

struct disk_util_stats {
	uint32_t ios[2];
	uint32_t merges[2];
	uint64_t sectors[2];
	uint32_t ticks[2];
	uint32_t io_ticks;
	uint32_t time_in_queue;
	uint64_t msec;
};

/*
 * Disk utils as read in /sys/block/<dev>/stat
 */
struct disk_util_stat {
	uint8_t name[FIO_DU_NAME_SZ];
	struct disk_util_stats s;
};

struct disk_util_agg {
	uint32_t ios[2];
	uint32_t merges[2];
	uint64_t sectors[2];
	uint32_t ticks[2];
	uint32_t io_ticks;
	uint32_t time_in_queue;
	uint32_t slavecount;
	fio_fp64_t max_util;
};

/*
 * Per-device disk util management
 */
struct disk_util {
	struct flist_head list;
	/* If this disk is a slave, hook it into the master's
	 * list using this head.
	 */
	struct flist_head slavelist;

	char *name;
	char *sysfs_root;
	char path[PATH_MAX];
	int major, minor;

	struct disk_util_stat dus;
	struct disk_util_stat last_dus;

	struct disk_util_agg agg;

	/* For software raids, this entry maintains pointers to the
	 * entries for the slave devices. The disk_util entries for
	 * the slaves devices should primarily be maintained through
	 * the disk_list list, i.e. for memory allocation and
	 * de-allocation, etc. Whereas this list should be used only
	 * for aggregating a software RAID's disk util figures.
	 */
	struct flist_head slaves;

	struct timeval time;

	struct fio_mutex *lock;
	unsigned long users;
};

static inline void disk_util_mod(struct disk_util *du, int val)
{
	if (du) {
		struct flist_head *n;

		fio_mutex_down(du->lock);
		du->users += val;

		flist_for_each(n, &du->slavelist) {
			struct disk_util *slave;

			slave = flist_entry(n, struct disk_util, slavelist);
			slave->users += val;
		}
		fio_mutex_up(du->lock);
	}
}
static inline void disk_util_inc(struct disk_util *du)
{
	disk_util_mod(du, 1);
}

static inline void disk_util_dec(struct disk_util *du)
{
	disk_util_mod(du, -1);
}

#define DISK_UTIL_MSEC	(250)

extern struct flist_head disk_list;

/*
 * disk util stuff
 */
#ifdef FIO_HAVE_DISK_UTIL
extern void print_disk_util(struct disk_util_stat *, struct disk_util_agg *, int terse);
extern void show_disk_util(int terse, struct json_object *parent);
extern void json_array_add_disk_util(struct disk_util_stat *dus,
		struct disk_util_agg *agg, struct json_array *parent);
extern void init_disk_util(struct thread_data *);
extern int update_io_ticks(void);
extern void setup_disk_util(void);
extern void disk_util_prune_entries(void);
#else
static inline void print_disk_util(struct disk_util_stat *du,
				   struct disk_util_agg *agg, int terse)
{
}
#define show_disk_util(terse, parent)
#define disk_util_prune_entries()
#define init_disk_util(td)
#define setup_disk_util()
#define json_array_add_disk_util(dus, agg, parent)

static inline int update_io_ticks(void)
{
	return helper_exit;
}
#endif

#endif
Commit	Line	Data
7c9b1bce JA	1	#ifndef FIO_DISKUTIL_H
7c9b1bce JA	2	#define FIO_DISKUTIL_H
cc372b17	3	#include "json.h"
d09a64a0 JA	4	#define FIO_DU_NAME_SZ 64
d09a64a0 JA	5
5ddc6707	6	extern volatile int helper_exit;
27357187	7
a3b4cf7d	8	struct disk_util_stats {
d09a64a0 JA	9	uint32_t ios[2];
	10	uint32_t merges[2];
	11	uint64_t sectors[2];
	12	uint32_t ticks[2];
	13	uint32_t io_ticks;
	14	uint32_t time_in_queue;
	15	uint64_t msec;
	16	};
	17
a3b4cf7d JA	18	/*
	19	* Disk utils as read in /sys/block/<dev>/stat
	20	*/
	21	struct disk_util_stat {
	22	uint8_t name[FIO_DU_NAME_SZ];
	23	struct disk_util_stats s;
	24	};
	25
d09a64a0 JA	26	struct disk_util_agg {
	27	uint32_t ios[2];
	28	uint32_t merges[2];
	29	uint64_t sectors[2];
	30	uint32_t ticks[2];
	31	uint32_t io_ticks;
	32	uint32_t time_in_queue;
	33	uint32_t slavecount;
	34	fio_fp64_t max_util;
7c9b1bce JA	35	};
	36
	37	/*
	38	* Per-device disk util management
	39	*/
	40	struct disk_util {
	41	struct flist_head list;
	42	/* If this disk is a slave, hook it into the master's
	43	* list using this head.
	44	*/
	45	struct flist_head slavelist;
	46
	47	char *name;
	48	char *sysfs_root;
4b919f77	49	char path[PATH_MAX];
7c9b1bce JA	50	int major, minor;
	51
	52	struct disk_util_stat dus;
	53	struct disk_util_stat last_dus;
	54
d09a64a0 JA	55	struct disk_util_agg agg;
d09a64a0 JA	56
7c9b1bce JA	57	/* For software raids, this entry maintains pointers to the
	58	* entries for the slave devices. The disk_util entries for
	59	* the slaves devices should primarily be maintained through
	60	* the disk_list list, i.e. for memory allocation and
	61	* de-allocation, etc. Whereas this list should be used only
	62	* for aggregating a software RAID's disk util figures.
	63	*/
	64	struct flist_head slaves;
	65
7c9b1bce JA	66	struct timeval time;
	67
	68	struct fio_mutex *lock;
	69	unsigned long users;
	70	};
	71
e99ca81d	72	static inline void disk_util_mod(struct disk_util *du, int val)
7c9b1bce JA	73	{
7c9b1bce JA	74	if (du) {
e99ca81d JA	75	struct flist_head *n;
e99ca81d JA	76
7c9b1bce	77	fio_mutex_down(du->lock);
e99ca81d JA	78	du->users += val;
	79
	80	flist_for_each(n, &du->slavelist) {
	81	struct disk_util *slave;
	82
	83	slave = flist_entry(n, struct disk_util, slavelist);
	84	slave->users += val;
	85	}
7c9b1bce JA	86	fio_mutex_up(du->lock);
	87	}
	88	}
e99ca81d JA	89	static inline void disk_util_inc(struct disk_util *du)
	90	{
	91	disk_util_mod(du, 1);
	92	}
7c9b1bce JA	93
	94	static inline void disk_util_dec(struct disk_util *du)
	95	{
e99ca81d	96	disk_util_mod(du, -1);
7c9b1bce JA	97	}
	98
	99	#define DISK_UTIL_MSEC (250)
	100
d09a64a0 JA	101	extern struct flist_head disk_list;
d09a64a0 JA	102
7c9b1bce JA	103	/*
	104	* disk util stuff
	105	*/
	106	#ifdef FIO_HAVE_DISK_UTIL
f2f788dd	107	extern void print_disk_util(struct disk_util_stat , struct disk_util_agg , int terse);
cc372b17	108	extern void show_disk_util(int terse, struct json_object *parent);
952b05e0 CF	109	extern void json_array_add_disk_util(struct disk_util_stat *dus,
952b05e0 CF	110	struct disk_util_agg agg, struct json_array parent);
7c9b1bce	111	extern void init_disk_util(struct thread_data *);
9ec7779f JA	112	extern int update_io_ticks(void);
9ec7779f JA	113	extern void setup_disk_util(void);
27357187	114	extern void disk_util_prune_entries(void);
7c9b1bce	115	#else
941bda94 JA	116	static inline void print_disk_util(struct disk_util_stat *du,
	117	struct disk_util_agg *agg, int terse)
	118	{
	119	}
cc372b17	120	#define show_disk_util(terse, parent)
27357187	121	#define disk_util_prune_entries()
7c9b1bce	122	#define init_disk_util(td)
9ec7779f	123	#define setup_disk_util()
952b05e0 CF	124	#define json_array_add_disk_util(dus, agg, parent)
952b05e0 CF	125
9ec7779f JA	126	static inline int update_io_ticks(void)
9ec7779f JA	127	{
5ddc6707	128	return helper_exit;
9ec7779f	129	}
7c9b1bce JA	130	#endif
	131
	132	#endif