| 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 | |
| 10 | #define MINORBITS 20 |
| 11 | #define MINORMASK ((1U << MINORBITS) - 1) |
| 12 | #define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS)) |
| 13 | #define MINOR(dev) ((unsigned int) ((dev) & MINORMASK)) |
| 14 | |
| 15 | #define SECONDS(x) ((unsigned long long)(x) / 1000000000) |
| 16 | #define NANO_SECONDS(x) ((unsigned long long)(x) % 1000000000) |
| 17 | #define DOUBLE_TO_NANO_ULL(d) ((unsigned long long)((d) * 1000000000)) |
| 18 | |
| 19 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
| 20 | |
| 21 | #define t_sec(t) ((t)->bytes >> 9) |
| 22 | #define t_kb(t) ((t)->bytes >> 10) |
| 23 | |
| 24 | typedef __u32 u32; |
| 25 | typedef __u8 u8; |
| 26 | |
| 27 | struct io_stats { |
| 28 | unsigned long qreads, qwrites, creads, cwrites, mreads, mwrites; |
| 29 | unsigned long ireads, iwrites; |
| 30 | unsigned long long qread_kb, qwrite_kb, cread_kb, cwrite_kb; |
| 31 | unsigned long long iread_kb, iwrite_kb; |
| 32 | unsigned long io_unplugs, timer_unplugs; |
| 33 | }; |
| 34 | |
| 35 | struct per_cpu_info { |
| 36 | unsigned int cpu; |
| 37 | unsigned int nelems; |
| 38 | |
| 39 | int fd; |
| 40 | char fname[128]; |
| 41 | |
| 42 | struct io_stats io_stats; |
| 43 | }; |
| 44 | |
| 45 | extern FILE *ofp; |
| 46 | |
| 47 | #define CHECK_MAGIC(t) (((t)->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) |
| 48 | #define SUPPORTED_VERSION (0x05) |
| 49 | |
| 50 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
| 51 | #define be16_to_cpu(x) __bswap_16(x) |
| 52 | #define be32_to_cpu(x) __bswap_32(x) |
| 53 | #define be64_to_cpu(x) __bswap_64(x) |
| 54 | #define cpu_to_be16(x) __bswap_16(x) |
| 55 | #define cpu_to_be32(x) __bswap_32(x) |
| 56 | #define cpu_to_be64(x) __bswap_64(x) |
| 57 | #elif __BYTE_ORDER == __BIG_ENDIAN |
| 58 | #define be16_to_cpu(x) (x) |
| 59 | #define be32_to_cpu(x) (x) |
| 60 | #define be64_to_cpu(x) (x) |
| 61 | #define cpu_to_be16(x) (x) |
| 62 | #define cpu_to_be32(x) (x) |
| 63 | #define cpu_to_be64(x) (x) |
| 64 | #else |
| 65 | #error "Bad arch" |
| 66 | #endif |
| 67 | |
| 68 | static inline int verify_trace(struct blk_io_trace *t) |
| 69 | { |
| 70 | if (!CHECK_MAGIC(t)) { |
| 71 | fprintf(stderr, "bad trace magic %x\n", t->magic); |
| 72 | return 1; |
| 73 | } |
| 74 | if ((t->magic & 0xff) != SUPPORTED_VERSION) { |
| 75 | fprintf(stderr, "unsupported trace version %x\n", |
| 76 | t->magic & 0xff); |
| 77 | return 1; |
| 78 | } |
| 79 | |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | static inline void trace_to_be(struct blk_io_trace *t) |
| 84 | { |
| 85 | t->magic = cpu_to_be32(t->magic); |
| 86 | t->sequence = cpu_to_be32(t->sequence); |
| 87 | t->time = cpu_to_be64(t->time); |
| 88 | t->sector = cpu_to_be64(t->sector); |
| 89 | t->bytes = cpu_to_be32(t->bytes); |
| 90 | t->action = cpu_to_be32(t->action); |
| 91 | t->pid = cpu_to_be32(t->pid); |
| 92 | t->cpu = cpu_to_be32(t->cpu); |
| 93 | t->error = cpu_to_be16(t->error); |
| 94 | t->pdu_len = cpu_to_be16(t->pdu_len); |
| 95 | t->device = cpu_to_be32(t->device); |
| 96 | /* t->comm is a string (endian neutral) */ |
| 97 | } |
| 98 | |
| 99 | static inline void trace_to_cpu(struct blk_io_trace *t) |
| 100 | { |
| 101 | t->magic = be32_to_cpu(t->magic); |
| 102 | t->sequence = be32_to_cpu(t->sequence); |
| 103 | t->time = be64_to_cpu(t->time); |
| 104 | t->sector = be64_to_cpu(t->sector); |
| 105 | t->bytes = be32_to_cpu(t->bytes); |
| 106 | t->action = be32_to_cpu(t->action); |
| 107 | t->pid = be32_to_cpu(t->pid); |
| 108 | t->cpu = be32_to_cpu(t->cpu); |
| 109 | t->error = be16_to_cpu(t->error); |
| 110 | t->pdu_len = be16_to_cpu(t->pdu_len); |
| 111 | t->device = be32_to_cpu(t->device); |
| 112 | /* t->comm is a string (endian neutral) */ |
| 113 | } |
| 114 | |
| 115 | extern void set_all_format_specs(char *); |
| 116 | extern int add_format_spec(char *); |
| 117 | extern void process_fmt(char *, struct per_cpu_info *, struct blk_io_trace *, |
| 118 | unsigned long long, int, unsigned char *); |
| 119 | extern int valid_act_opt(int); |
| 120 | extern int find_mask_map(char *); |
| 121 | |
| 122 | #endif |