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6fe4709e JA |
1 | #ifndef BLKTRACE_H |
2 | #define BLKTRACE_H | |
d0ca268b | 3 | |
98f8386b | 4 | #include <stdio.h> |
c3ce73f5 | 5 | #include <limits.h> |
6fe4709e | 6 | #include <byteswap.h> |
1e3c4225 | 7 | #include <endian.h> |
f55e6d10 | 8 | #include <sys/types.h> |
1e3c4225 | 9 | |
6fe4709e | 10 | #include "blktrace_api.h" |
210824c3 | 11 | #include "rbtree.h" |
d0ca268b | 12 | |
71d5d4c9 JA |
13 | #define MINORBITS 20 |
14 | #define MINORMASK ((1U << MINORBITS) - 1) | |
15 | #define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS)) | |
16 | #define MINOR(dev) ((unsigned int) ((dev) & MINORMASK)) | |
17 | ||
18 | #define SECONDS(x) ((unsigned long long)(x) / 1000000000) | |
19 | #define NANO_SECONDS(x) ((unsigned long long)(x) % 1000000000) | |
20 | #define DOUBLE_TO_NANO_ULL(d) ((unsigned long long)((d) * 1000000000)) | |
21 | ||
22 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
6a6d3f0f | 23 | #define max(a, b) ((a) > (b) ? (a) : (b)) |
71d5d4c9 | 24 | |
ae957cbc JA |
25 | #define t_sec(t) ((t)->bytes >> 9) |
26 | #define t_kb(t) ((t)->bytes >> 10) | |
cd0ae0f6 | 27 | #define t_b(t) ((t)->bytes & 1023) |
ae957cbc | 28 | |
bf0720af JA |
29 | typedef __u32 u32; |
30 | typedef __u8 u8; | |
31 | ||
71d5d4c9 JA |
32 | struct io_stats { |
33 | unsigned long qreads, qwrites, creads, cwrites, mreads, mwrites; | |
4054070a | 34 | unsigned long ireads, iwrites, rrqueue, wrqueue; |
71d5d4c9 | 35 | unsigned long long qread_kb, qwrite_kb, cread_kb, cwrite_kb; |
cd0ae0f6 | 36 | unsigned long long qread_b, qwrite_b, cread_b, cwrite_b; |
71d5d4c9 | 37 | unsigned long long iread_kb, iwrite_kb; |
fb2ec796 | 38 | unsigned long long mread_kb, mwrite_kb; |
cd0ae0f6 | 39 | unsigned long long mread_b, mwrite_b, iread_b, iwrite_b; |
801646d6 CS |
40 | unsigned long qreads_pc, qwrites_pc, ireads_pc, iwrites_pc; |
41 | unsigned long rrqueue_pc, wrqueue_pc, creads_pc, cwrites_pc; | |
42 | unsigned long long qread_kb_pc, qwrite_kb_pc, iread_kb_pc, iwrite_kb_pc; | |
cd0ae0f6 | 43 | unsigned long long qread_b_pc, qwrite_b_pc, iread_b_pc, iwrite_b_pc; |
71d5d4c9 JA |
44 | unsigned long io_unplugs, timer_unplugs; |
45 | }; | |
46 | ||
47 | struct per_cpu_info { | |
e820abd7 JA |
48 | unsigned int cpu; |
49 | unsigned int nelems; | |
71d5d4c9 JA |
50 | |
51 | int fd; | |
c0e0dbc2 | 52 | int fdblock; |
c3ce73f5 | 53 | char fname[PATH_MAX]; |
71d5d4c9 JA |
54 | |
55 | struct io_stats io_stats; | |
210824c3 JA |
56 | |
57 | struct rb_root rb_last; | |
58 | unsigned long rb_last_entries; | |
59 | unsigned long last_sequence; | |
60 | unsigned long smallest_seq_read; | |
66930177 JA |
61 | |
62 | struct skip_info *skips_head; | |
63 | struct skip_info *skips_tail; | |
71d5d4c9 JA |
64 | }; |
65 | ||
66 | extern FILE *ofp; | |
017d1660 | 67 | extern int data_is_native; |
7bd4fd0a | 68 | extern struct timespec abs_start_time; |
71d5d4c9 | 69 | |
d0ca268b | 70 | #define CHECK_MAGIC(t) (((t)->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) |
bfc70ad5 | 71 | #define SUPPORTED_VERSION (0x07) |
d0ca268b | 72 | |
1e3c4225 | 73 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
6fe4709e JA |
74 | #define be16_to_cpu(x) __bswap_16(x) |
75 | #define be32_to_cpu(x) __bswap_32(x) | |
76 | #define be64_to_cpu(x) __bswap_64(x) | |
77 | #define cpu_to_be16(x) __bswap_16(x) | |
78 | #define cpu_to_be32(x) __bswap_32(x) | |
79 | #define cpu_to_be64(x) __bswap_64(x) | |
ffcf46d8 | 80 | #elif __BYTE_ORDER == __BIG_ENDIAN |
6fe4709e JA |
81 | #define be16_to_cpu(x) (x) |
82 | #define be32_to_cpu(x) (x) | |
83 | #define be64_to_cpu(x) (x) | |
84 | #define cpu_to_be16(x) (x) | |
85 | #define cpu_to_be32(x) (x) | |
86 | #define cpu_to_be64(x) (x) | |
87 | #else | |
88 | #error "Bad arch" | |
89 | #endif | |
90 | ||
91 | static inline int verify_trace(struct blk_io_trace *t) | |
92 | { | |
93 | if (!CHECK_MAGIC(t)) { | |
94 | fprintf(stderr, "bad trace magic %x\n", t->magic); | |
95 | return 1; | |
96 | } | |
97 | if ((t->magic & 0xff) != SUPPORTED_VERSION) { | |
98 | fprintf(stderr, "unsupported trace version %x\n", | |
99 | t->magic & 0xff); | |
100 | return 1; | |
101 | } | |
d0ca268b | 102 | |
6fe4709e JA |
103 | return 0; |
104 | } | |
d0ca268b | 105 | |
6fe4709e JA |
106 | static inline void trace_to_cpu(struct blk_io_trace *t) |
107 | { | |
017d1660 JA |
108 | if (data_is_native) |
109 | return; | |
110 | ||
6fe4709e JA |
111 | t->magic = be32_to_cpu(t->magic); |
112 | t->sequence = be32_to_cpu(t->sequence); | |
113 | t->time = be64_to_cpu(t->time); | |
114 | t->sector = be64_to_cpu(t->sector); | |
115 | t->bytes = be32_to_cpu(t->bytes); | |
116 | t->action = be32_to_cpu(t->action); | |
117 | t->pid = be32_to_cpu(t->pid); | |
bfc70ad5 | 118 | t->device = be32_to_cpu(t->device); |
8e8bb835 | 119 | t->cpu = be32_to_cpu(t->cpu); |
6fe4709e JA |
120 | t->error = be16_to_cpu(t->error); |
121 | t->pdu_len = be16_to_cpu(t->pdu_len); | |
122 | } | |
d0ca268b | 123 | |
017d1660 JA |
124 | /* |
125 | * check whether data is native or not | |
126 | */ | |
e5413c3c | 127 | static inline int check_data_endianness(u32 magic) |
017d1660 | 128 | { |
e5413c3c | 129 | if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) { |
017d1660 JA |
130 | data_is_native = 1; |
131 | return 0; | |
132 | } | |
133 | ||
e5413c3c | 134 | magic = __bswap_32(magic); |
017d1660 | 135 | if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) { |
017d1660 JA |
136 | data_is_native = 0; |
137 | return 0; | |
138 | } | |
139 | ||
140 | return 1; | |
141 | } | |
142 | ||
71d5d4c9 JA |
143 | extern void set_all_format_specs(char *); |
144 | extern int add_format_spec(char *); | |
145 | extern void process_fmt(char *, struct per_cpu_info *, struct blk_io_trace *, | |
146 | unsigned long long, int, unsigned char *); | |
98f8386b AB |
147 | extern int valid_act_opt(int); |
148 | extern int find_mask_map(char *); | |
bfc70ad5 | 149 | extern char *find_process_name(pid_t); |
71d5d4c9 | 150 | |
d0ca268b | 151 | #endif |