[blktrace.git] / blktrace.h

#ifndef BLKTRACE_H
#define BLKTRACE_H

#include <stdio.h>
#include <byteswap.h>
#include <endian.h>

#include "blktrace_api.h"
#include "rbtree.h"

#define MINORBITS	20
#define MINORMASK	((1U << MINORBITS) - 1)
#define MAJOR(dev)	((unsigned int) ((dev) >> MINORBITS))
#define MINOR(dev)	((unsigned int) ((dev) & MINORMASK))

#define SECONDS(x) 		((unsigned long long)(x) / 1000000000)
#define NANO_SECONDS(x)		((unsigned long long)(x) % 1000000000)
#define DOUBLE_TO_NANO_ULL(d)	((unsigned long long)((d) * 1000000000))

#define min(a, b)	((a) < (b) ? (a) : (b))

#define t_sec(t)	((t)->bytes >> 9)
#define t_kb(t)		((t)->bytes >> 10)

typedef __u32 u32;
typedef __u8 u8;

struct io_stats {
	unsigned long qreads, qwrites, creads, cwrites, mreads, mwrites;
	unsigned long ireads, iwrites, rrqueue, wrqueue;
	unsigned long long qread_kb, qwrite_kb, cread_kb, cwrite_kb;
	unsigned long long iread_kb, iwrite_kb;
	unsigned long io_unplugs, timer_unplugs;
};

struct per_cpu_info {
	unsigned int cpu;
	unsigned int nelems;

	int fd;
	int fdblock;
	char fname[128];

	struct io_stats io_stats;

	struct rb_root rb_last;
	unsigned long rb_last_entries;
	unsigned long last_sequence;
	unsigned long smallest_seq_read;

	struct skip_info *skips_head;
	struct skip_info *skips_tail;
};

extern FILE *ofp;

#define CHECK_MAGIC(t)		(((t)->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC)
#define SUPPORTED_VERSION	(0x06)

#if __BYTE_ORDER == __LITTLE_ENDIAN
#define be16_to_cpu(x)		__bswap_16(x)
#define be32_to_cpu(x)		__bswap_32(x)
#define be64_to_cpu(x)		__bswap_64(x)
#define cpu_to_be16(x)		__bswap_16(x)
#define cpu_to_be32(x)		__bswap_32(x)
#define cpu_to_be64(x)		__bswap_64(x)
#elif __BYTE_ORDER == __BIG_ENDIAN
#define be16_to_cpu(x)		(x)
#define be32_to_cpu(x)		(x)
#define be64_to_cpu(x)		(x)
#define cpu_to_be16(x)		(x)
#define cpu_to_be32(x)		(x)
#define cpu_to_be64(x)		(x)
#else
#error "Bad arch"
#endif

static inline int verify_trace(struct blk_io_trace *t)
{
	if (!CHECK_MAGIC(t)) {
		fprintf(stderr, "bad trace magic %x\n", t->magic);
		return 1;
	}
	if ((t->magic & 0xff) != SUPPORTED_VERSION) {
		fprintf(stderr, "unsupported trace version %x\n", 
			t->magic & 0xff);
		return 1;
	}

	return 0;
}

static inline void trace_to_be(struct blk_io_trace *t)
{
	t->magic	= cpu_to_be32(t->magic);
	t->sequence	= cpu_to_be32(t->sequence);
	t->time		= cpu_to_be64(t->time);
	t->sector	= cpu_to_be64(t->sector);
	t->bytes	= cpu_to_be32(t->bytes);
	t->action	= cpu_to_be32(t->action);
	t->pid		= cpu_to_be32(t->pid);
	t->cpu		= cpu_to_be32(t->cpu);
	t->error	= cpu_to_be16(t->error);
	t->pdu_len	= cpu_to_be16(t->pdu_len);
	t->device	= cpu_to_be32(t->device);
	/* t->comm is a string (endian neutral) */
}

static inline void trace_to_cpu(struct blk_io_trace *t)
{
	t->magic	= be32_to_cpu(t->magic);
	t->sequence	= be32_to_cpu(t->sequence);
	t->time		= be64_to_cpu(t->time);
	t->sector	= be64_to_cpu(t->sector);
	t->bytes	= be32_to_cpu(t->bytes);
	t->action	= be32_to_cpu(t->action);
	t->pid		= be32_to_cpu(t->pid);
	t->cpu		= be32_to_cpu(t->cpu);
	t->error	= be16_to_cpu(t->error);
	t->pdu_len	= be16_to_cpu(t->pdu_len);
	t->device	= be32_to_cpu(t->device);
	/* t->comm is a string (endian neutral) */
}

extern void set_all_format_specs(char *);
extern int add_format_spec(char *);
extern void process_fmt(char *, struct per_cpu_info *, struct blk_io_trace *,
			unsigned long long, int, unsigned char *);
extern int valid_act_opt(int);
extern int find_mask_map(char *);

#endif
Commit	Line	Data
	1	#ifndef BLKTRACE_H
	2	#define BLKTRACE_H
	3
	4	#include <stdio.h>
	5	#include <byteswap.h>
	6	#include <endian.h>
	7
	8	#include "blktrace_api.h"
	9	#include "rbtree.h"
	10
	11	#define MINORBITS 20
	12	#define MINORMASK ((1U << MINORBITS) - 1)
	13	#define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS))
	14	#define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))
	15
	16	#define SECONDS(x) ((unsigned long long)(x) / 1000000000)
	17	#define NANO_SECONDS(x) ((unsigned long long)(x) % 1000000000)
	18	#define DOUBLE_TO_NANO_ULL(d) ((unsigned long long)((d) * 1000000000))
	19
	20	#define min(a, b) ((a) < (b) ? (a) : (b))
	21
	22	#define t_sec(t) ((t)->bytes >> 9)
	23	#define t_kb(t) ((t)->bytes >> 10)
	24
	25	typedef __u32 u32;
	26	typedef __u8 u8;
	27
	28	struct io_stats {
	29	unsigned long qreads, qwrites, creads, cwrites, mreads, mwrites;
	30	unsigned long ireads, iwrites, rrqueue, wrqueue;
	31	unsigned long long qread_kb, qwrite_kb, cread_kb, cwrite_kb;
	32	unsigned long long iread_kb, iwrite_kb;
	33	unsigned long io_unplugs, timer_unplugs;
	34	};
	35
	36	struct per_cpu_info {
	37	unsigned int cpu;
	38	unsigned int nelems;
	39
	40	int fd;
	41	int fdblock;
	42	char fname[128];
	43
	44	struct io_stats io_stats;
	45
	46	struct rb_root rb_last;
	47	unsigned long rb_last_entries;
	48	unsigned long last_sequence;
	49	unsigned long smallest_seq_read;
	50
	51	struct skip_info *skips_head;
	52	struct skip_info *skips_tail;
	53	};
	54
	55	extern FILE *ofp;
	56
	57	#define CHECK_MAGIC(t) (((t)->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC)
	58	#define SUPPORTED_VERSION (0x06)
	59
	60	#if __BYTE_ORDER == __LITTLE_ENDIAN
	61	#define be16_to_cpu(x) __bswap_16(x)
	62	#define be32_to_cpu(x) __bswap_32(x)
	63	#define be64_to_cpu(x) __bswap_64(x)
	64	#define cpu_to_be16(x) __bswap_16(x)
	65	#define cpu_to_be32(x) __bswap_32(x)
	66	#define cpu_to_be64(x) __bswap_64(x)
	67	#elif __BYTE_ORDER == __BIG_ENDIAN
	68	#define be16_to_cpu(x) (x)
	69	#define be32_to_cpu(x) (x)
	70	#define be64_to_cpu(x) (x)
	71	#define cpu_to_be16(x) (x)
	72	#define cpu_to_be32(x) (x)
	73	#define cpu_to_be64(x) (x)
	74	#else
	75	#error "Bad arch"
	76	#endif
	77
	78	static inline int verify_trace(struct blk_io_trace *t)
	79	{
	80	if (!CHECK_MAGIC(t)) {
	81	fprintf(stderr, "bad trace magic %x\n", t->magic);
	82	return 1;
	83	}
	84	if ((t->magic & 0xff) != SUPPORTED_VERSION) {
	85	fprintf(stderr, "unsupported trace version %x\n",
	86	t->magic & 0xff);
	87	return 1;
	88	}
	89
	90	return 0;
	91	}
	92
	93	static inline void trace_to_be(struct blk_io_trace *t)
	94	{
	95	t->magic = cpu_to_be32(t->magic);
	96	t->sequence = cpu_to_be32(t->sequence);
	97	t->time = cpu_to_be64(t->time);
	98	t->sector = cpu_to_be64(t->sector);
	99	t->bytes = cpu_to_be32(t->bytes);
	100	t->action = cpu_to_be32(t->action);
	101	t->pid = cpu_to_be32(t->pid);
	102	t->cpu = cpu_to_be32(t->cpu);
	103	t->error = cpu_to_be16(t->error);
	104	t->pdu_len = cpu_to_be16(t->pdu_len);
	105	t->device = cpu_to_be32(t->device);
	106	/* t->comm is a string (endian neutral) */
	107	}
	108
	109	static inline void trace_to_cpu(struct blk_io_trace *t)
	110	{
	111	t->magic = be32_to_cpu(t->magic);
	112	t->sequence = be32_to_cpu(t->sequence);
	113	t->time = be64_to_cpu(t->time);
	114	t->sector = be64_to_cpu(t->sector);
	115	t->bytes = be32_to_cpu(t->bytes);
	116	t->action = be32_to_cpu(t->action);
	117	t->pid = be32_to_cpu(t->pid);
	118	t->cpu = be32_to_cpu(t->cpu);
	119	t->error = be16_to_cpu(t->error);
	120	t->pdu_len = be16_to_cpu(t->pdu_len);
	121	t->device = be32_to_cpu(t->device);
	122	/* t->comm is a string (endian neutral) */
	123	}
	124
	125	extern void set_all_format_specs(char *);
	126	extern int add_format_spec(char *);
	127	extern void process_fmt(char , struct per_cpu_info , struct blk_io_trace *,
	128	unsigned long long, int, unsigned char *);
	129	extern int valid_act_opt(int);
	130	extern int find_mask_map(char *);
	131
	132	#endif