Commit | Line | Data |
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6fe4709e JA |
1 | #ifndef BLKTRACE_H |
2 | #define BLKTRACE_H | |
d0ca268b | 3 | |
98f8386b | 4 | #include <stdio.h> |
6fe4709e | 5 | #include <byteswap.h> |
1e3c4225 JA |
6 | #include <endian.h> |
7 | ||
6fe4709e | 8 | #include "blktrace_api.h" |
210824c3 | 9 | #include "rbtree.h" |
d0ca268b | 10 | |
71d5d4c9 JA |
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)) | |
6a6d3f0f | 21 | #define max(a, b) ((a) > (b) ? (a) : (b)) |
71d5d4c9 | 22 | |
ae957cbc JA |
23 | #define t_sec(t) ((t)->bytes >> 9) |
24 | #define t_kb(t) ((t)->bytes >> 10) | |
25 | ||
bf0720af JA |
26 | typedef __u32 u32; |
27 | typedef __u8 u8; | |
28 | ||
71d5d4c9 JA |
29 | struct io_stats { |
30 | unsigned long qreads, qwrites, creads, cwrites, mreads, mwrites; | |
4054070a | 31 | unsigned long ireads, iwrites, rrqueue, wrqueue; |
71d5d4c9 JA |
32 | unsigned long long qread_kb, qwrite_kb, cread_kb, cwrite_kb; |
33 | unsigned long long iread_kb, iwrite_kb; | |
34 | unsigned long io_unplugs, timer_unplugs; | |
35 | }; | |
36 | ||
37 | struct per_cpu_info { | |
e820abd7 JA |
38 | unsigned int cpu; |
39 | unsigned int nelems; | |
71d5d4c9 JA |
40 | |
41 | int fd; | |
c0e0dbc2 | 42 | int fdblock; |
71d5d4c9 JA |
43 | char fname[128]; |
44 | ||
45 | struct io_stats io_stats; | |
210824c3 JA |
46 | |
47 | struct rb_root rb_last; | |
48 | unsigned long rb_last_entries; | |
49 | unsigned long last_sequence; | |
50 | unsigned long smallest_seq_read; | |
66930177 JA |
51 | |
52 | struct skip_info *skips_head; | |
53 | struct skip_info *skips_tail; | |
71d5d4c9 JA |
54 | }; |
55 | ||
56 | extern FILE *ofp; | |
017d1660 | 57 | extern int data_is_native; |
71d5d4c9 | 58 | |
d0ca268b | 59 | #define CHECK_MAGIC(t) (((t)->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) |
bfc70ad5 | 60 | #define SUPPORTED_VERSION (0x07) |
d0ca268b | 61 | |
1e3c4225 | 62 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
6fe4709e JA |
63 | #define be16_to_cpu(x) __bswap_16(x) |
64 | #define be32_to_cpu(x) __bswap_32(x) | |
65 | #define be64_to_cpu(x) __bswap_64(x) | |
66 | #define cpu_to_be16(x) __bswap_16(x) | |
67 | #define cpu_to_be32(x) __bswap_32(x) | |
68 | #define cpu_to_be64(x) __bswap_64(x) | |
ffcf46d8 | 69 | #elif __BYTE_ORDER == __BIG_ENDIAN |
6fe4709e JA |
70 | #define be16_to_cpu(x) (x) |
71 | #define be32_to_cpu(x) (x) | |
72 | #define be64_to_cpu(x) (x) | |
73 | #define cpu_to_be16(x) (x) | |
74 | #define cpu_to_be32(x) (x) | |
75 | #define cpu_to_be64(x) (x) | |
76 | #else | |
77 | #error "Bad arch" | |
78 | #endif | |
79 | ||
80 | static inline int verify_trace(struct blk_io_trace *t) | |
81 | { | |
82 | if (!CHECK_MAGIC(t)) { | |
83 | fprintf(stderr, "bad trace magic %x\n", t->magic); | |
84 | return 1; | |
85 | } | |
86 | if ((t->magic & 0xff) != SUPPORTED_VERSION) { | |
87 | fprintf(stderr, "unsupported trace version %x\n", | |
88 | t->magic & 0xff); | |
89 | return 1; | |
90 | } | |
d0ca268b | 91 | |
6fe4709e JA |
92 | return 0; |
93 | } | |
d0ca268b | 94 | |
6fe4709e JA |
95 | static inline void trace_to_cpu(struct blk_io_trace *t) |
96 | { | |
017d1660 JA |
97 | if (data_is_native) |
98 | return; | |
99 | ||
6fe4709e JA |
100 | t->magic = be32_to_cpu(t->magic); |
101 | t->sequence = be32_to_cpu(t->sequence); | |
102 | t->time = be64_to_cpu(t->time); | |
103 | t->sector = be64_to_cpu(t->sector); | |
104 | t->bytes = be32_to_cpu(t->bytes); | |
105 | t->action = be32_to_cpu(t->action); | |
106 | t->pid = be32_to_cpu(t->pid); | |
bfc70ad5 JA |
107 | t->device = be32_to_cpu(t->device); |
108 | t->cpu = be16_to_cpu(t->cpu); | |
6fe4709e JA |
109 | t->error = be16_to_cpu(t->error); |
110 | t->pdu_len = be16_to_cpu(t->pdu_len); | |
111 | } | |
d0ca268b | 112 | |
017d1660 JA |
113 | /* |
114 | * check whether data is native or not | |
115 | */ | |
e5413c3c | 116 | static inline int check_data_endianness(u32 magic) |
017d1660 | 117 | { |
e5413c3c | 118 | if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) { |
017d1660 JA |
119 | data_is_native = 1; |
120 | return 0; | |
121 | } | |
122 | ||
e5413c3c | 123 | magic = __bswap_32(magic); |
017d1660 | 124 | if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) { |
017d1660 JA |
125 | data_is_native = 0; |
126 | return 0; | |
127 | } | |
128 | ||
129 | return 1; | |
130 | } | |
131 | ||
71d5d4c9 JA |
132 | extern void set_all_format_specs(char *); |
133 | extern int add_format_spec(char *); | |
134 | extern void process_fmt(char *, struct per_cpu_info *, struct blk_io_trace *, | |
135 | unsigned long long, int, unsigned char *); | |
98f8386b AB |
136 | extern int valid_act_opt(int); |
137 | extern int find_mask_map(char *); | |
bfc70ad5 | 138 | extern char *find_process_name(pid_t); |
71d5d4c9 | 139 | |
d0ca268b | 140 | #endif |