8 #include "blktrace_api.h"
11 #define MINORMASK ((1U << MINORBITS) - 1)
12 #define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS))
13 #define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))
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))
19 #define min(a, b) ((a) < (b) ? (a) : (b))
21 #define t_sec(t) ((t)->bytes >> 9)
22 #define t_kb(t) ((t)->bytes >> 10)
28 unsigned long qreads, qwrites, creads, cwrites, mreads, mwrites;
29 unsigned long ireads, iwrites, rrqueue, wrqueue;
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;
42 struct io_stats io_stats;
47 #define CHECK_MAGIC(t) (((t)->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC)
48 #define SUPPORTED_VERSION (0x05)
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)
68 static inline int verify_trace(struct blk_io_trace *t)
70 if (!CHECK_MAGIC(t)) {
71 fprintf(stderr, "bad trace magic %x\n", t->magic);
74 if ((t->magic & 0xff) != SUPPORTED_VERSION) {
75 fprintf(stderr, "unsupported trace version %x\n",
83 static inline void trace_to_be(struct blk_io_trace *t)
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) */
99 static inline void trace_to_cpu(struct blk_io_trace *t)
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) */
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 *);