1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
#ifndef __SCHED_TRACE_H_
#define __SCHED_TRACE_H_
#include <stdint.h>
typedef uint8_t u8;
typedef uint32_t u32;
typedef uint16_t u16;
typedef uint64_t u64;
/* A couple of notes about the format:
*
* - make sure it is in sync with the kernel
* - all times in nanoseconds
* - endianess issues are the problem of the app
*/
struct st_trace_header {
u8 type; /* Of what type is this record? */
u8 cpu; /* On which CPU was it recorded? */
u16 pid; /* PID of the task. */
u32 job; /* The job sequence number. */
};
#define ST_NAME_LEN 16
struct st_name_data {
char cmd[ST_NAME_LEN];/* The name of the executable of this process. */
};
struct st_param_data { /* regular params */
u32 wcet;
u32 period;
u32 phase;
u8 partition;
u8 __unused[3];
};
struct st_release_data { /* A job is was/is going to be released. */
u64 release; /* What's the release time? */
u64 deadline; /* By when must it finish? */
};
struct st_assigned_data { /* A job was asigned to a CPU. */
u64 when;
u8 target; /* Where should it execute? */
u8 __unused[3];
};
struct st_switch_to_data { /* A process was switched to on a given CPU. */
u64 when; /* When did this occur? */
u32 exec_time; /* Time the current job has executed. */
};
struct st_switch_away_data { /* A process was switched away from on a given CPU. */
u64 when;
u64 exec_time;
};
struct st_completion_data { /* A job completed. */
u64 when;
u8 forced:1; /* Set to 1 if job overran and kernel advanced to the
* next task automatically; set to 0 otherwise.
*/
u8 __uflags:7;
u8 __unused[3];
};
struct st_block_data { /* A task blocks. */
u64 when;
u64 __unused;
};
struct st_resume_data { /* A task resumes. */
u64 when;
u64 __unused;
};
struct st_sys_release_data {
u64 when;
u64 release;
};
#define DATA(x) struct st_ ## x ## _data x;
typedef enum {
ST_NAME = 1, /* Start at one, so that we can spot
* uninitialized records. */
ST_PARAM,
ST_RELEASE,
ST_ASSIGNED,
ST_SWITCH_TO,
ST_SWITCH_AWAY,
ST_COMPLETION,
ST_BLOCK,
ST_RESUME,
ST_ACTION,
ST_SYS_RELEASE,
} st_event_record_type_t;
struct st_event_record {
struct st_trace_header hdr;
union {
u64 raw[2];
DATA(name);
DATA(param);
DATA(release);
DATA(assigned);
DATA(switch_to);
DATA(switch_away);
DATA(completion);
DATA(block);
DATA(resume);
DATA(sys_release);
} data;
};
#undef DATA
const char* event2name(unsigned int id);
u64 event_time(struct st_event_record* rec);
void print_event(struct st_event_record *rec);
void print_all(struct st_event_record *rec, unsigned int count);
#endif
|
