[PATCH[ verify_blkparse: dump number of events scanned
[blktrace.git] / blktrace.h
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