8 #include "blktrace_api.h"
12 #define MINORMASK ((1U << MINORBITS) - 1)
13 #define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS))
14 #define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))
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))
20 #define min(a, b) ((a) < (b) ? (a) : (b))
22 #define t_sec(t) ((t)->bytes >> 9)
23 #define t_kb(t) ((t)->bytes >> 10)
29 unsigned long qreads, qwrites, creads, cwrites, mreads, mwrites;
30 unsigned long ireads, iwrites, rrqueue, wrqueue;
31 unsigned long long qread_kb, qwrite_kb, cread_kb, cwrite_kb;
32 unsigned long long iread_kb, iwrite_kb;
33 unsigned long io_unplugs, timer_unplugs;
44 struct io_stats io_stats;
46 struct rb_root rb_last;
47 unsigned long rb_last_entries;
48 unsigned long last_sequence;
49 unsigned long smallest_seq_read;
51 struct skip_info *skips_head;
52 struct skip_info *skips_tail;
56 extern int data_is_native;
58 #define CHECK_MAGIC(t) (((t)->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC)
59 #define SUPPORTED_VERSION (0x07)
61 #if __BYTE_ORDER == __LITTLE_ENDIAN
62 #define be16_to_cpu(x) __bswap_16(x)
63 #define be32_to_cpu(x) __bswap_32(x)
64 #define be64_to_cpu(x) __bswap_64(x)
65 #define cpu_to_be16(x) __bswap_16(x)
66 #define cpu_to_be32(x) __bswap_32(x)
67 #define cpu_to_be64(x) __bswap_64(x)
68 #elif __BYTE_ORDER == __BIG_ENDIAN
69 #define be16_to_cpu(x) (x)
70 #define be32_to_cpu(x) (x)
71 #define be64_to_cpu(x) (x)
72 #define cpu_to_be16(x) (x)
73 #define cpu_to_be32(x) (x)
74 #define cpu_to_be64(x) (x)
79 static inline int verify_trace(struct blk_io_trace *t)
81 if (!CHECK_MAGIC(t)) {
82 fprintf(stderr, "bad trace magic %x\n", t->magic);
85 if ((t->magic & 0xff) != SUPPORTED_VERSION) {
86 fprintf(stderr, "unsupported trace version %x\n",
94 static inline void trace_to_cpu(struct blk_io_trace *t)
99 t->magic = be32_to_cpu(t->magic);
100 t->sequence = be32_to_cpu(t->sequence);
101 t->time = be64_to_cpu(t->time);
102 t->sector = be64_to_cpu(t->sector);
103 t->bytes = be32_to_cpu(t->bytes);
104 t->action = be32_to_cpu(t->action);
105 t->pid = be32_to_cpu(t->pid);
106 t->device = be32_to_cpu(t->device);
107 t->cpu = be16_to_cpu(t->cpu);
108 t->error = be16_to_cpu(t->error);
109 t->pdu_len = be16_to_cpu(t->pdu_len);
113 * check whether data is native or not
115 static inline int check_data_endianness(u32 magic)
117 if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) {
122 magic = __bswap_32(magic);
123 if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) {
131 extern void set_all_format_specs(char *);
132 extern int add_format_spec(char *);
133 extern void process_fmt(char *, struct per_cpu_info *, struct blk_io_trace *,
134 unsigned long long, int, unsigned char *);
135 extern int valid_act_opt(int);
136 extern int find_mask_map(char *);
137 extern char *find_process_name(pid_t);