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156 lines
3.9 KiB
156 lines
3.9 KiB
#ifndef BLKTRACE_H
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#define BLKTRACE_H
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#include <stdio.h>
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#include <limits.h>
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#include <byteswap.h>
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#include <endian.h>
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#include <sys/types.h>
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#include "blktrace_api.h"
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#include "rbtree.h"
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#define MINORBITS 20
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#define MINORMASK ((1U << MINORBITS) - 1)
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#define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS))
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#define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))
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#define SECONDS(x) ((unsigned long long)(x) / 1000000000)
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#define NANO_SECONDS(x) ((unsigned long long)(x) % 1000000000)
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#define DOUBLE_TO_NANO_ULL(d) ((unsigned long long)((d) * 1000000000))
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#define min(a, b) ((a) < (b) ? (a) : (b))
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#define max(a, b) ((a) > (b) ? (a) : (b))
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#define t_sec(t) ((t)->bytes >> 9)
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#define t_kb(t) ((t)->bytes >> 10)
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#define t_b(t) ((t)->bytes & 1023)
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typedef __u32 u32;
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typedef __u8 u8;
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struct io_stats {
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unsigned long qreads, qwrites, creads, cwrites, mreads, mwrites;
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unsigned long ireads, iwrites, rrqueue, wrqueue;
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unsigned long long qread_kb, qwrite_kb, cread_kb, cwrite_kb;
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unsigned long long qread_b, qwrite_b, cread_b, cwrite_b;
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unsigned long long iread_kb, iwrite_kb;
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unsigned long long mread_kb, mwrite_kb;
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unsigned long long mread_b, mwrite_b, iread_b, iwrite_b;
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unsigned long qreads_pc, qwrites_pc, ireads_pc, iwrites_pc;
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unsigned long rrqueue_pc, wrqueue_pc, creads_pc, cwrites_pc;
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unsigned long long qread_kb_pc, qwrite_kb_pc, iread_kb_pc, iwrite_kb_pc;
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unsigned long long qread_b_pc, qwrite_b_pc, iread_b_pc, iwrite_b_pc;
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unsigned long io_unplugs, timer_unplugs;
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};
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struct per_cpu_info {
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unsigned int cpu;
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unsigned int nelems;
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int fd;
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int fdblock;
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char fname[PATH_MAX];
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struct io_stats io_stats;
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struct rb_root rb_last;
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unsigned long rb_last_entries;
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unsigned long last_sequence;
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unsigned long smallest_seq_read;
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struct skip_info *skips_head;
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struct skip_info *skips_tail;
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};
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extern FILE *ofp;
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extern int data_is_native;
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extern struct timespec abs_start_time;
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#define CHECK_MAGIC(t) (((t)->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC)
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#define SUPPORTED_VERSION (0x07)
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#define __bswap_16 bswap_16
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#define __bswap_32 bswap_32
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#define __bswap_64 bswap_64
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define be16_to_cpu(x) __bswap_16(x)
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#define be32_to_cpu(x) __bswap_32(x)
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#define be64_to_cpu(x) __bswap_64(x)
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#define cpu_to_be16(x) __bswap_16(x)
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#define cpu_to_be32(x) __bswap_32(x)
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#define cpu_to_be64(x) __bswap_64(x)
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#elif __BYTE_ORDER == __BIG_ENDIAN
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#define be16_to_cpu(x) (x)
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#define be32_to_cpu(x) (x)
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#define be64_to_cpu(x) (x)
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#define cpu_to_be16(x) (x)
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#define cpu_to_be32(x) (x)
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#define cpu_to_be64(x) (x)
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#else
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#error "Bad arch"
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#endif
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static inline int verify_trace(struct blk_io_trace *t)
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{
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if (!CHECK_MAGIC(t)) {
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fprintf(stderr, "bad trace magic %x\n", t->magic);
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return 1;
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}
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if ((t->magic & 0xff) != SUPPORTED_VERSION) {
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fprintf(stderr, "unsupported trace version %x\n",
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t->magic & 0xff);
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return 1;
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}
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return 0;
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}
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static inline void trace_to_cpu(struct blk_io_trace *t)
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{
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if (data_is_native)
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return;
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t->magic = be32_to_cpu(t->magic);
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t->sequence = be32_to_cpu(t->sequence);
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t->time = be64_to_cpu(t->time);
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t->sector = be64_to_cpu(t->sector);
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t->bytes = be32_to_cpu(t->bytes);
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t->action = be32_to_cpu(t->action);
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t->pid = be32_to_cpu(t->pid);
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t->device = be32_to_cpu(t->device);
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t->cpu = be32_to_cpu(t->cpu);
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t->error = be16_to_cpu(t->error);
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t->pdu_len = be16_to_cpu(t->pdu_len);
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}
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/*
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* check whether data is native or not
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*/
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static inline int check_data_endianness(u32 magic)
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{
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if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) {
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data_is_native = 1;
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return 0;
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}
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magic = __bswap_32(magic);
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if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) {
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data_is_native = 0;
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return 0;
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}
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return 1;
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}
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extern void set_all_format_specs(char *);
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extern int add_format_spec(char *);
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extern void process_fmt(char *, struct per_cpu_info *, struct blk_io_trace *,
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unsigned long long, int, unsigned char *);
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extern int valid_act_opt(int);
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extern int find_mask_map(char *);
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extern char *find_process_name(pid_t);
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#endif
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