summaryrefslogtreecommitdiffstats
path: root/kernel/trace/trace_entries.h
blob: adcdbbeae0108bad436d0af31297dc555ad7f545 (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
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
/*
 * This file defines the trace event structures that go into the ring
 * buffer directly. They are created via macros so that changes for them
 * appear in the format file. Using macros will automate this process.
 *
 * The macro used to create a ftrace data structure is:
 *
 * FTRACE_ENTRY( name, struct_name, id, structure, print )
 *
 * @name: the name used the event name, as well as the name of
 *   the directory that holds the format file.
 *
 * @struct_name: the name of the structure that is created.
 *
 * @id: The event identifier that is used to detect what event
 *    this is from the ring buffer.
 *
 * @structure: the structure layout
 *
 *  - __field(	type,	item	)
 *	  This is equivalent to declaring
 *		type	item;
 *	  in the structure.
 *  - __array(	type,	item,	size	)
 *	  This is equivalent to declaring
 *		type	item[size];
 *	  in the structure.
 *
 *   * for structures within structures, the format of the internal
 *	structure is laid out. This allows the internal structure
 *	to be deciphered for the format file. Although these macros
 *	may become out of sync with the internal structure, they
 *	will create a compile error if it happens. Since the
 *	internel structures are just tracing helpers, this is not
 *	an issue.
 *
 *	When an internal structure is used, it should use:
 *
 *	__field_struct(	type,	item	)
 *
 *	instead of __field. This will prevent it from being shown in
 *	the output file. The fields in the structure should use.
 *
 *	__field_desc(	type,	container,	item		)
 *	__array_desc(	type,	container,	item,	len	)
 *
 *	type, item and len are the same as __field and __array, but
 *	container is added. This is the name of the item in
 *	__field_struct that this is describing.
 *
 *
 * @print: the print format shown to users in the format file.
 */

/*
 * Function trace entry - function address and parent function address:
 */
FTRACE_ENTRY_REG(function, ftrace_entry,

	TRACE_FN,

	F_STRUCT(
		__field(	unsigned long,	ip		)
		__field(	unsigned long,	parent_ip	)
	),

	F_printk(" %lx <-- %lx", __entry->ip, __entry->parent_ip),

	FILTER_TRACE_FN,

	perf_ftrace_event_register
);

/* Function call entry */
FTRACE_ENTRY_PACKED(funcgraph_entry, ftrace_graph_ent_entry,

	TRACE_GRAPH_ENT,

	F_STRUCT(
		__field_struct(	struct ftrace_graph_ent,	graph_ent	)
		__field_desc(	unsigned long,	graph_ent,	func		)
		__field_desc(	int,		graph_ent,	depth		)
	),

	F_printk("--> %lx (%d)", __entry->func, __entry->depth),

	FILTER_OTHER
);

/* Function return entry */
FTRACE_ENTRY_PACKED(funcgraph_exit, ftrace_graph_ret_entry,

	TRACE_GRAPH_RET,

	F_STRUCT(
		__field_struct(	struct ftrace_graph_ret,	ret	)
		__field_desc(	unsigned long,	ret,		func	)
		__field_desc(	unsigned long long, ret,	calltime)
		__field_desc(	unsigned long long, ret,	rettime	)
		__field_desc(	unsigned long,	ret,		overrun	)
		__field_desc(	int,		ret,		depth	)
	),

	F_printk("<-- %lx (%d) (start: %llx  end: %llx) over: %d",
		 __entry->func, __entry->depth,
		 __entry->calltime, __entry->rettime,
		 __entry->depth),

	FILTER_OTHER
);

/*
 * Context switch trace entry - which task (and prio) we switched from/to:
 *
 * This is used for both wakeup and context switches. We only want
 * to create one structure, but we need two outputs for it.
 */
#define FTRACE_CTX_FIELDS					\
	__field(	unsigned int,	prev_pid	)	\
	__field(	unsigned int,	next_pid	)	\
	__field(	unsigned int,	next_cpu	)       \
	__field(	unsigned char,	prev_prio	)	\
	__field(	unsigned char,	prev_state	)	\
	__field(	unsigned char,	next_prio	)	\
	__field(	unsigned char,	next_state	)

FTRACE_ENTRY(context_switch, ctx_switch_entry,

	TRACE_CTX,

	F_STRUCT(
		FTRACE_CTX_FIELDS
	),

	F_printk("%u:%u:%u  ==> %u:%u:%u [%03u]",
		 __entry->prev_pid, __entry->prev_prio, __entry->prev_state,
		 __entry->next_pid, __entry->next_prio, __entry->next_state,
		 __entry->next_cpu),

	FILTER_OTHER
);

/*
 * FTRACE_ENTRY_DUP only creates the format file, it will not
 *  create another structure.
 */
FTRACE_ENTRY_DUP(wakeup, ctx_switch_entry,

	TRACE_WAKE,

	F_STRUCT(
		FTRACE_CTX_FIELDS
	),

	F_printk("%u:%u:%u  ==+ %u:%u:%u [%03u]",
		 __entry->prev_pid, __entry->prev_prio, __entry->prev_state,
		 __entry->next_pid, __entry->next_prio, __entry->next_state,
		 __entry->next_cpu),

	FILTER_OTHER
);

/*
 * Stack-trace entry:
 */

#define FTRACE_STACK_ENTRIES	8

#ifndef CONFIG_64BIT
# define IP_FMT "%08lx"
#else
# define IP_FMT "%016lx"
#endif

FTRACE_ENTRY(kernel_stack, stack_entry,

	TRACE_STACK,

	F_STRUCT(
		__field(	int,		size	)
		__dynamic_array(unsigned long,	caller	)
	),

	F_printk("\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n"
		 "\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n"
		 "\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n",
		 __entry->caller[0], __entry->caller[1], __entry->caller[2],
		 __entry->caller[3], __entry->caller[4], __entry->caller[5],
		 __entry->caller[6], __entry->caller[7]),

	FILTER_OTHER
);

FTRACE_ENTRY(user_stack, userstack_entry,

	TRACE_USER_STACK,

	F_STRUCT(
		__field(	unsigned int,	tgid	)
		__array(	unsigned long,	caller, FTRACE_STACK_ENTRIES	)
	),

	F_printk("\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n"
		 "\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n"
		 "\t=> (" IP_FMT ")\n\t=> (" IP_FMT ")\n",
		 __entry->caller[0], __entry->caller[1], __entry->caller[2],
		 __entry->caller[3], __entry->caller[4], __entry->caller[5],
		 __entry->caller[6], __entry->caller[7]),

	FILTER_OTHER
);

/*
 * trace_printk entry:
 */
FTRACE_ENTRY(bprint, bprint_entry,

	TRACE_BPRINT,

	F_STRUCT(
		__field(	unsigned long,	ip	)
		__field(	const char *,	fmt	)
		__dynamic_array(	u32,	buf	)
	),

	F_printk("%ps: %s",
		 (void *)__entry->ip, __entry->fmt),

	FILTER_OTHER
);

FTRACE_ENTRY(print, print_entry,

	TRACE_PRINT,

	F_STRUCT(
		__field(	unsigned long,	ip	)
		__dynamic_array(	char,	buf	)
	),

	F_printk("%ps: %s",
		 (void *)__entry->ip, __entry->buf),

	FILTER_OTHER
);

FTRACE_ENTRY(raw_data, raw_data_entry,

	TRACE_RAW_DATA,

	F_STRUCT(
		__field(	unsigned int,	id	)
		__dynamic_array(	char,	buf	)
	),

	F_printk("id:%04x %08x",
		 __entry->id, (int)__entry->buf[0]),

	FILTER_OTHER
);

FTRACE_ENTRY(bputs, bputs_entry,

	TRACE_BPUTS,

	F_STRUCT(
		__field(	unsigned long,	ip	)
		__field(	const char *,	str	)
	),

	F_printk("%ps: %s",
		 (void *)__entry->ip, __entry->str),

	FILTER_OTHER
);

FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw,

	TRACE_MMIO_RW,

	F_STRUCT(
		__field_struct(	struct mmiotrace_rw,	rw	)
		__field_desc(	resource_size_t, rw,	phys	)
		__field_desc(	unsigned long,	rw,	value	)
		__field_desc(	unsigned long,	rw,	pc	)
		__field_desc(	int, 		rw,	map_id	)
		__field_desc(	unsigned char,	rw,	opcode	)
		__field_desc(	unsigned char,	rw,	width	)
	),

	F_printk("%lx %lx %lx %d %x %x",
		 (unsigned long)__entry->phys, __entry->value, __entry->pc,
		 __entry->map_id, __entry->opcode, __entry->width),

	FILTER_OTHER
);

FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map,

	TRACE_MMIO_MAP,

	F_STRUCT(
		__field_struct(	struct mmiotrace_map,	map	)
		__field_desc(	resource_size_t, map,	phys	)
		__field_desc(	unsigned long,	map,	virt	)
		__field_desc(	unsigned long,	map,	len	)
		__field_desc(	int, 		map,	map_id	)
		__field_desc(	unsigned char,	map,	opcode	)
	),

	F_printk("%lx %lx %lx %d %x",
		 (unsigned long)__entry->phys, __entry->virt, __entry->len,
		 __entry->map_id, __entry->opcode),

	FILTER_OTHER
);


#define TRACE_FUNC_SIZE 30
#define TRACE_FILE_SIZE 20

FTRACE_ENTRY(branch, trace_branch,

	TRACE_BRANCH,

	F_STRUCT(
		__field(	unsigned int,	line				)
		__array(	char,		func,	TRACE_FUNC_SIZE+1	)
		__array(	char,		file,	TRACE_FILE_SIZE+1	)
		__field(	char,		correct				)
		__field(	char,		constant			)
	),

	F_printk("%u:%s:%s (%u)%s",
		 __entry->line,
		 __entry->func, __entry->file, __entry->correct,
		 __entry->constant ? " CONSTANT" : ""),

	FILTER_OTHER
);


FTRACE_ENTRY(hwlat, hwlat_entry,

	TRACE_HWLAT,

	F_STRUCT(
		__field(	u64,			duration	)
		__field(	u64,			outer_duration	)
		__field(	u64,			nmi_total_ts	)
		__field_struct( struct timespec64,	timestamp	)
		__field_desc(	s64,	timestamp,	tv_sec		)
		__field_desc(	long,	timestamp,	tv_nsec		)
		__field(	unsigned int,		nmi_count	)
		__field(	unsigned int,		seqnum		)
	),

	F_printk("cnt:%u\tts:%010llu.%010lu\tinner:%llu\touter:%llunmi-ts:%llu\tnmi-count:%u\n",
		 __entry->seqnum,
		 __entry->tv_sec,
		 __entry->tv_nsec,
		 __entry->duration,
		 __entry->outer_duration,
		 __entry->nmi_total_ts,
		 __entry->nmi_count),

	FILTER_OTHER
);
OpenPOWER on IntegriCloud