9 #include "blktrace_api.h"
13 #define MINORMASK ((1U << MINORBITS) - 1)
14 #define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS))
15 #define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))
17 #define SECONDS(x) ((unsigned long long)(x) / 1000000000)
18 #define NANO_SECONDS(x) ((unsigned long long)(x) % 1000000000)
19 #define DOUBLE_TO_NANO_ULL(d) ((unsigned long long)((d) * 1000000000))
21 #define min(a, b) ((a) < (b) ? (a) : (b))
22 #define max(a, b) ((a) > (b) ? (a) : (b))
24 #define t_sec(t) ((t)->bytes >> 9)
25 #define t_kb(t) ((t)->bytes >> 10)
31 unsigned long qreads, qwrites, creads, cwrites, mreads, mwrites;
32 unsigned long ireads, iwrites, rrqueue, wrqueue;
33 unsigned long long qread_kb, qwrite_kb, cread_kb, cwrite_kb;
34 unsigned long long iread_kb, iwrite_kb;
35 unsigned long long mread_kb, mwrite_kb;
36 unsigned long qreads_pc, qwrites_pc, ireads_pc, iwrites_pc;
37 unsigned long rrqueue_pc, wrqueue_pc, creads_pc, cwrites_pc;
38 unsigned long long qread_kb_pc, qwrite_kb_pc, iread_kb_pc, iwrite_kb_pc;
39 unsigned long io_unplugs, timer_unplugs;
50 struct io_stats io_stats;
52 struct rb_root rb_last;
53 unsigned long rb_last_entries;
54 unsigned long last_sequence;
55 unsigned long smallest_seq_read;
57 struct skip_info *skips_head;
58 struct skip_info *skips_tail;
62 extern int data_is_native;
63 extern struct timespec abs_start_time;
65 #define CHECK_MAGIC(t) (((t)->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC)
66 #define SUPPORTED_VERSION (0x07)
68 #if __BYTE_ORDER == __LITTLE_ENDIAN
69 #define be16_to_cpu(x) __bswap_16(x)
70 #define be32_to_cpu(x) __bswap_32(x)
71 #define be64_to_cpu(x) __bswap_64(x)
72 #define cpu_to_be16(x) __bswap_16(x)
73 #define cpu_to_be32(x) __bswap_32(x)
74 #define cpu_to_be64(x) __bswap_64(x)
75 #elif __BYTE_ORDER == __BIG_ENDIAN
76 #define be16_to_cpu(x) (x)
77 #define be32_to_cpu(x) (x)
78 #define be64_to_cpu(x) (x)
79 #define cpu_to_be16(x) (x)
80 #define cpu_to_be32(x) (x)
81 #define cpu_to_be64(x) (x)
86 static inline int verify_trace(struct blk_io_trace *t)
88 if (!CHECK_MAGIC(t)) {
89 fprintf(stderr, "bad trace magic %x\n", t->magic);
92 if ((t->magic & 0xff) != SUPPORTED_VERSION) {
93 fprintf(stderr, "unsupported trace version %x\n",
101 static inline void trace_to_cpu(struct blk_io_trace *t)
106 t->magic = be32_to_cpu(t->magic);
107 t->sequence = be32_to_cpu(t->sequence);
108 t->time = be64_to_cpu(t->time);
109 t->sector = be64_to_cpu(t->sector);
110 t->bytes = be32_to_cpu(t->bytes);
111 t->action = be32_to_cpu(t->action);
112 t->pid = be32_to_cpu(t->pid);
113 t->device = be32_to_cpu(t->device);
114 t->cpu = be32_to_cpu(t->cpu);
115 t->error = be16_to_cpu(t->error);
116 t->pdu_len = be16_to_cpu(t->pdu_len);
120 * check whether data is native or not
122 static inline int check_data_endianness(u32 magic)
124 if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) {
129 magic = __bswap_32(magic);
130 if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) {
138 extern void set_all_format_specs(char *);
139 extern int add_format_spec(char *);
140 extern void process_fmt(char *, struct per_cpu_info *, struct blk_io_trace *,
141 unsigned long long, int, unsigned char *);
142 extern int valid_act_opt(int);
143 extern int find_mask_map(char *);
144 extern char *find_process_name(pid_t);