[fio.git] / diskutil.h

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

extern volatile int disk_util_exit;

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

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;

extern void wait_for_disk_thread_exit(void);

/*
 * 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 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()
static inline int update_io_ticks(void)
{
	return disk_util_exit;
}
#endif

static inline void disk_util_start_exit(void)
{
	disk_util_exit = 1;
}

#endif
Commit	Line	Data
	1	#ifndef FIO_DISKUTIL_H
	2	#define FIO_DISKUTIL_H
	3	#include "json.h"
	4	#define FIO_DU_NAME_SZ 64
	5
	6	extern volatile int disk_util_exit;
	7
	8	/*
	9	* Disk utils as read in /sys/block/<dev>/stat
	10	*/
	11	struct disk_util_stat {
	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;
	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;
	45	char path[PATH_MAX];
	46	int major, minor;
	47
	48	struct disk_util_stat dus;
	49	struct disk_util_stat last_dus;
	50
	51	struct disk_util_agg agg;
	52
	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
	62	struct timeval time;
	63
	64	struct fio_mutex *lock;
	65	unsigned long users;
	66	};
	67
	68	static inline void disk_util_mod(struct disk_util *du, int val)
	69	{
	70	if (du) {
	71	struct flist_head *n;
	72
	73	fio_mutex_down(du->lock);
	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	}
	82	fio_mutex_up(du->lock);
	83	}
	84	}
	85	static inline void disk_util_inc(struct disk_util *du)
	86	{
	87	disk_util_mod(du, 1);
	88	}
	89
	90	static inline void disk_util_dec(struct disk_util *du)
	91	{
	92	disk_util_mod(du, -1);
	93	}
	94
	95	#define DISK_UTIL_MSEC (250)
	96
	97	extern struct flist_head disk_list;
	98
	99	extern void wait_for_disk_thread_exit(void);
	100
	101	/*
	102	* disk util stuff
	103	*/
	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);
	111	#else
	112	static inline void print_disk_util(struct disk_util_stat *du,
	113	struct disk_util_agg *agg, int terse)
	114	{
	115	}
	116	#define show_disk_util(terse, parent)
	117	#define disk_util_prune_entries()
	118	#define init_disk_util(td)
	119	#define setup_disk_util()
	120	static inline int update_io_ticks(void)
	121	{
	122	return disk_util_exit;
	123	}
	124	#endif
	125
	126	static inline void disk_util_start_exit(void)
	127	{
	128	disk_util_exit = 1;
	129	}
	130
	131	#endif