aboutsummaryrefslogtreecommitdiffstats
path: root/tools/perf/util/trace-event.h
blob: b1e58d3d947de0c7d21a879545c5fb829ae34698 (plain)
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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
#ifndef __PERF_TRACE_EVENTS_H
#define __PERF_TRACE_EVENTS_H

#include "parse-events.h"

#define __unused __attribute__((unused))


#ifndef PAGE_MASK
#define PAGE_MASK (page_size - 1)
#endif

enum {
	RINGBUF_TYPE_PADDING		= 29,
	RINGBUF_TYPE_TIME_EXTEND	= 30,
	RINGBUF_TYPE_TIME_STAMP		= 31,
};

#ifndef TS_SHIFT
#define TS_SHIFT		27
#endif

#define NSECS_PER_SEC		1000000000ULL
#define NSECS_PER_USEC		1000ULL

enum format_flags {
	FIELD_IS_ARRAY		= 1,
	FIELD_IS_POINTER	= 2,
	FIELD_IS_SIGNED		= 4,
	FIELD_IS_STRING		= 8,
	FIELD_IS_DYNAMIC	= 16,
	FIELD_IS_FLAG		= 32,
	FIELD_IS_SYMBOLIC	= 64,
};

struct format_field {
	struct format_field	*next;
	char			*type;
	char			*name;
	int			offset;
	int			size;
	unsigned long		flags;
};

struct format {
	int			nr_common;
	int			nr_fields;
	struct format_field	*common_fields;
	struct format_field	*fields;
};

struct print_arg_atom {
	char			*atom;
};

struct print_arg_string {
	char			*string;
	int			offset;
};

struct print_arg_field {
	char			*name;
	struct format_field	*field;
};

struct print_flag_sym {
	struct print_flag_sym	*next;
	char			*value;
	char			*str;
};

struct print_arg_typecast {
	char 			*type;
	struct print_arg	*item;
};

struct print_arg_flags {
	struct print_arg	*field;
	char			*delim;
	struct print_flag_sym	*flags;
};

struct print_arg_symbol {
	struct print_arg	*field;
	struct print_flag_sym	*symbols;
};

struct print_arg;

struct print_arg_op {
	char			*op;
	int			prio;
	struct print_arg	*left;
	struct print_arg	*right;
};

struct print_arg_func {
	char			*name;
	struct print_arg	*args;
};

enum print_arg_type {
	PRINT_NULL,
	PRINT_ATOM,
	PRINT_FIELD,
	PRINT_FLAGS,
	PRINT_SYMBOL,
	PRINT_TYPE,
	PRINT_STRING,
	PRINT_OP,
};

struct print_arg {
	struct print_arg		*next;
	enum print_arg_type		type;
	union {
		struct print_arg_atom		atom;
		struct print_arg_field		field;
		struct print_arg_typecast	typecast;
		struct print_arg_flags		flags;
		struct print_arg_symbol		symbol;
		struct print_arg_func		func;
		struct print_arg_string		string;
		struct print_arg_op		op;
	};
};

struct print_fmt {
	char			*format;
	struct print_arg	*args;
};

struct event {
	struct event		*next;
	char			*name;
	int			id;
	int			flags;
	struct format		format;
	struct print_fmt	print_fmt;
	char			*system;
};

enum {
	EVENT_FL_ISFTRACE	= 0x01,
	EVENT_FL_ISPRINT	= 0x02,
	EVENT_FL_ISBPRINT	= 0x04,
	EVENT_FL_ISFUNC		= 0x08,
	EVENT_FL_ISFUNCENT	= 0x10,
	EVENT_FL_ISFUNCRET	= 0x20,

	EVENT_FL_FAILED		= 0x80000000
};

struct record {
	unsigned long long ts;
	int size;
	void *data;
};

struct record *trace_peek_data(int cpu);
struct record *trace_read_data(int cpu);

void parse_set_info(int nr_cpus, int long_sz);

void trace_report(int fd);

void *malloc_or_die(unsigned int size);

void parse_cmdlines(char *file, int size);
void parse_proc_kallsyms(char *file, unsigned int size);
void parse_ftrace_printk(char *file, unsigned int size);

void print_funcs(void);
void print_printk(void);

int parse_ftrace_file(char *buf, unsigned long size);
int parse_event_file(char *buf, unsigned long size, char *sys);
void print_event(int cpu, void *data, int size, unsigned long long nsecs,
		  char *comm);

extern int file_bigendian;
extern int host_bigendian;

int bigendian(void);

static inline unsigned short __data2host2(unsigned short data)
{
	unsigned short swap;

	if (host_bigendian == file_bigendian)
		return data;

	swap = ((data & 0xffULL) << 8) |
		((data & (0xffULL << 8)) >> 8);

	return swap;
}

static inline unsigned int __data2host4(unsigned int data)
{
	unsigned int swap;

	if (host_bigendian == file_bigendian)
		return data;

	swap = ((data & 0xffULL) << 24) |
		((data & (0xffULL << 8)) << 8) |
		((data & (0xffULL << 16)) >> 8) |
		((data & (0xffULL << 24)) >> 24);

	return swap;
}

static inline unsigned long long __data2host8(unsigned long long data)
{
	unsigned long long swap;

	if (host_bigendian == file_bigendian)
		return data;

	swap = ((data & 0xffULL) << 56) |
		((data & (0xffULL << 8)) << 40) |
		((data & (0xffULL << 16)) << 24) |
		((data & (0xffULL << 24)) << 8) |
		((data & (0xffULL << 32)) >> 8) |
		((data & (0xffULL << 40)) >> 24) |
		((data & (0xffULL << 48)) >> 40) |
		((data & (0xffULL << 56)) >> 56);

	return swap;
}

#define data2host2(ptr)		__data2host2(*(unsigned short *)ptr)
#define data2host4(ptr)		__data2host4(*(unsigned int *)ptr)
#define data2host8(ptr)		__data2host8(*(unsigned long long *)ptr)

extern int header_page_ts_offset;
extern int header_page_ts_size;
extern int header_page_size_offset;
extern int header_page_size_size;
extern int header_page_data_offset;
extern int header_page_data_size;

extern int latency_format;

int parse_header_page(char *buf, unsigned long size);
int trace_parse_common_type(void *data);
int trace_parse_common_pid(void *data);
struct event *trace_find_event(int id);
struct event *trace_find_next_event(struct event *event);
unsigned long long read_size(void *ptr, int size);
unsigned long long
raw_field_value(struct event *event, const char *name, void *data);
void *raw_field_ptr(struct event *event, const char *name, void *data);
unsigned long long eval_flag(const char *flag);

int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events);

/* taken from kernel/trace/trace.h */
enum trace_flag_type {
	TRACE_FLAG_IRQS_OFF		= 0x01,
	TRACE_FLAG_IRQS_NOSUPPORT	= 0x02,
	TRACE_FLAG_NEED_RESCHED		= 0x04,
	TRACE_FLAG_HARDIRQ		= 0x08,
	TRACE_FLAG_SOFTIRQ		= 0x10,
};

struct scripting_ops {
	const char *name;
	int (*start_script) (const char *);
	int (*stop_script) (void);
	void (*process_event) (int cpu, void *data, int size,
			       unsigned long long nsecs, char *comm);
	int (*generate_script) (const char *outfile);
};

int script_spec_register(const char *spec, struct scripting_ops *ops);

extern struct scripting_ops perl_scripting_ops;
void setup_perl_scripting(void);

#endif /* __PERF_TRACE_EVENTS_H */