xref: /openbmc/linux/kernel/trace/trace_entries.h (revision e7186af7)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * This file defines the trace event structures that go into the ring
4  * buffer directly. They are created via macros so that changes for them
5  * appear in the format file. Using macros will automate this process.
6  *
7  * The macro used to create a ftrace data structure is:
8  *
9  * FTRACE_ENTRY( name, struct_name, id, structure, print )
10  *
11  * @name: the name used the event name, as well as the name of
12  *   the directory that holds the format file.
13  *
14  * @struct_name: the name of the structure that is created.
15  *
16  * @id: The event identifier that is used to detect what event
17  *    this is from the ring buffer.
18  *
19  * @structure: the structure layout
20  *
21  *  - __field(	type,	item	)
22  *	  This is equivalent to declaring
23  *		type	item;
24  *	  in the structure.
25  *  - __array(	type,	item,	size	)
26  *	  This is equivalent to declaring
27  *		type	item[size];
28  *	  in the structure.
29  *
30  *   * for structures within structures, the format of the internal
31  *	structure is laid out. This allows the internal structure
32  *	to be deciphered for the format file. Although these macros
33  *	may become out of sync with the internal structure, they
34  *	will create a compile error if it happens. Since the
35  *	internal structures are just tracing helpers, this is not
36  *	an issue.
37  *
38  *	When an internal structure is used, it should use:
39  *
40  *	__field_struct(	type,	item	)
41  *
42  *	instead of __field. This will prevent it from being shown in
43  *	the output file. The fields in the structure should use.
44  *
45  *	__field_desc(	type,	container,	item		)
46  *	__array_desc(	type,	container,	item,	len	)
47  *
48  *	type, item and len are the same as __field and __array, but
49  *	container is added. This is the name of the item in
50  *	__field_struct that this is describing.
51  *
52  *
53  * @print: the print format shown to users in the format file.
54  */
55 
56 /*
57  * Function trace entry - function address and parent function address:
58  */
59 FTRACE_ENTRY_REG(function, ftrace_entry,
60 
61 	TRACE_FN,
62 
63 	F_STRUCT(
64 		__field_fn(	unsigned long,	ip		)
65 		__field_fn(	unsigned long,	parent_ip	)
66 	),
67 
68 	F_printk(" %ps <-- %ps",
69 		 (void *)__entry->ip, (void *)__entry->parent_ip),
70 
71 	perf_ftrace_event_register
72 );
73 
74 /* Function call entry */
75 FTRACE_ENTRY_PACKED(funcgraph_entry, ftrace_graph_ent_entry,
76 
77 	TRACE_GRAPH_ENT,
78 
79 	F_STRUCT(
80 		__field_struct(	struct ftrace_graph_ent,	graph_ent	)
81 		__field_packed(	unsigned long,	graph_ent,	func		)
82 		__field_packed(	int,		graph_ent,	depth		)
83 	),
84 
85 	F_printk("--> %ps (%d)", (void *)__entry->func, __entry->depth)
86 );
87 
88 /* Function return entry */
89 #ifdef CONFIG_FUNCTION_GRAPH_RETVAL
90 
91 FTRACE_ENTRY_PACKED(funcgraph_exit, ftrace_graph_ret_entry,
92 
93 	TRACE_GRAPH_RET,
94 
95 	F_STRUCT(
96 		__field_struct(	struct ftrace_graph_ret,	ret	)
97 		__field_packed(	unsigned long,	ret,		func	)
98 		__field_packed(	unsigned long,	ret,		retval	)
99 		__field_packed(	int,		ret,		depth	)
100 		__field_packed(	unsigned int,	ret,		overrun	)
101 		__field_packed(	unsigned long long, ret,	calltime)
102 		__field_packed(	unsigned long long, ret,	rettime	)
103 	),
104 
105 	F_printk("<-- %ps (%d) (start: %llx  end: %llx) over: %d retval: %lx",
106 		 (void *)__entry->func, __entry->depth,
107 		 __entry->calltime, __entry->rettime,
108 		 __entry->depth, __entry->retval)
109 );
110 
111 #else
112 
113 FTRACE_ENTRY_PACKED(funcgraph_exit, ftrace_graph_ret_entry,
114 
115 	TRACE_GRAPH_RET,
116 
117 	F_STRUCT(
118 		__field_struct(	struct ftrace_graph_ret,	ret	)
119 		__field_packed(	unsigned long,	ret,		func	)
120 		__field_packed(	int,		ret,		depth	)
121 		__field_packed(	unsigned int,	ret,		overrun	)
122 		__field_packed(	unsigned long long, ret,	calltime)
123 		__field_packed(	unsigned long long, ret,	rettime	)
124 	),
125 
126 	F_printk("<-- %ps (%d) (start: %llx  end: %llx) over: %d",
127 		 (void *)__entry->func, __entry->depth,
128 		 __entry->calltime, __entry->rettime,
129 		 __entry->depth)
130 );
131 
132 #endif
133 
134 /*
135  * Context switch trace entry - which task (and prio) we switched from/to:
136  *
137  * This is used for both wakeup and context switches. We only want
138  * to create one structure, but we need two outputs for it.
139  */
140 #define FTRACE_CTX_FIELDS					\
141 	__field(	unsigned int,	prev_pid	)	\
142 	__field(	unsigned int,	next_pid	)	\
143 	__field(	unsigned int,	next_cpu	)       \
144 	__field(	unsigned char,	prev_prio	)	\
145 	__field(	unsigned char,	prev_state	)	\
146 	__field(	unsigned char,	next_prio	)	\
147 	__field(	unsigned char,	next_state	)
148 
149 FTRACE_ENTRY(context_switch, ctx_switch_entry,
150 
151 	TRACE_CTX,
152 
153 	F_STRUCT(
154 		FTRACE_CTX_FIELDS
155 	),
156 
157 	F_printk("%u:%u:%u  ==> %u:%u:%u [%03u]",
158 		 __entry->prev_pid, __entry->prev_prio, __entry->prev_state,
159 		 __entry->next_pid, __entry->next_prio, __entry->next_state,
160 		 __entry->next_cpu)
161 );
162 
163 /*
164  * FTRACE_ENTRY_DUP only creates the format file, it will not
165  *  create another structure.
166  */
167 FTRACE_ENTRY_DUP(wakeup, ctx_switch_entry,
168 
169 	TRACE_WAKE,
170 
171 	F_STRUCT(
172 		FTRACE_CTX_FIELDS
173 	),
174 
175 	F_printk("%u:%u:%u  ==+ %u:%u:%u [%03u]",
176 		 __entry->prev_pid, __entry->prev_prio, __entry->prev_state,
177 		 __entry->next_pid, __entry->next_prio, __entry->next_state,
178 		 __entry->next_cpu)
179 );
180 
181 /*
182  * Stack-trace entry:
183  */
184 
185 #define FTRACE_STACK_ENTRIES	8
186 
187 FTRACE_ENTRY(kernel_stack, stack_entry,
188 
189 	TRACE_STACK,
190 
191 	F_STRUCT(
192 		__field(	int,		size	)
193 		__stack_array(	unsigned long,	caller,	FTRACE_STACK_ENTRIES, size)
194 	),
195 
196 	F_printk("\t=> %ps\n\t=> %ps\n\t=> %ps\n"
197 		 "\t=> %ps\n\t=> %ps\n\t=> %ps\n"
198 		 "\t=> %ps\n\t=> %ps\n",
199 		 (void *)__entry->caller[0], (void *)__entry->caller[1],
200 		 (void *)__entry->caller[2], (void *)__entry->caller[3],
201 		 (void *)__entry->caller[4], (void *)__entry->caller[5],
202 		 (void *)__entry->caller[6], (void *)__entry->caller[7])
203 );
204 
205 FTRACE_ENTRY(user_stack, userstack_entry,
206 
207 	TRACE_USER_STACK,
208 
209 	F_STRUCT(
210 		__field(	unsigned int,	tgid	)
211 		__array(	unsigned long,	caller, FTRACE_STACK_ENTRIES	)
212 	),
213 
214 	F_printk("\t=> %ps\n\t=> %ps\n\t=> %ps\n"
215 		 "\t=> %ps\n\t=> %ps\n\t=> %ps\n"
216 		 "\t=> %ps\n\t=> %ps\n",
217 		 (void *)__entry->caller[0], (void *)__entry->caller[1],
218 		 (void *)__entry->caller[2], (void *)__entry->caller[3],
219 		 (void *)__entry->caller[4], (void *)__entry->caller[5],
220 		 (void *)__entry->caller[6], (void *)__entry->caller[7])
221 );
222 
223 /*
224  * trace_printk entry:
225  */
226 FTRACE_ENTRY(bprint, bprint_entry,
227 
228 	TRACE_BPRINT,
229 
230 	F_STRUCT(
231 		__field(	unsigned long,	ip	)
232 		__field(	const char *,	fmt	)
233 		__dynamic_array(	u32,	buf	)
234 	),
235 
236 	F_printk("%ps: %s",
237 		 (void *)__entry->ip, __entry->fmt)
238 );
239 
240 FTRACE_ENTRY_REG(print, print_entry,
241 
242 	TRACE_PRINT,
243 
244 	F_STRUCT(
245 		__field(	unsigned long,	ip	)
246 		__dynamic_array(	char,	buf	)
247 	),
248 
249 	F_printk("%ps: %s",
250 		 (void *)__entry->ip, __entry->buf),
251 
252 	ftrace_event_register
253 );
254 
255 FTRACE_ENTRY(raw_data, raw_data_entry,
256 
257 	TRACE_RAW_DATA,
258 
259 	F_STRUCT(
260 		__field(	unsigned int,	id	)
261 		__dynamic_array(	char,	buf	)
262 	),
263 
264 	F_printk("id:%04x %08x",
265 		 __entry->id, (int)__entry->buf[0])
266 );
267 
268 FTRACE_ENTRY(bputs, bputs_entry,
269 
270 	TRACE_BPUTS,
271 
272 	F_STRUCT(
273 		__field(	unsigned long,	ip	)
274 		__field(	const char *,	str	)
275 	),
276 
277 	F_printk("%ps: %s",
278 		 (void *)__entry->ip, __entry->str)
279 );
280 
281 FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw,
282 
283 	TRACE_MMIO_RW,
284 
285 	F_STRUCT(
286 		__field_struct(	struct mmiotrace_rw,	rw	)
287 		__field_desc(	resource_size_t, rw,	phys	)
288 		__field_desc(	unsigned long,	rw,	value	)
289 		__field_desc(	unsigned long,	rw,	pc	)
290 		__field_desc(	int,		rw,	map_id	)
291 		__field_desc(	unsigned char,	rw,	opcode	)
292 		__field_desc(	unsigned char,	rw,	width	)
293 	),
294 
295 	F_printk("%lx %lx %lx %d %x %x",
296 		 (unsigned long)__entry->phys, __entry->value, __entry->pc,
297 		 __entry->map_id, __entry->opcode, __entry->width)
298 );
299 
300 FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map,
301 
302 	TRACE_MMIO_MAP,
303 
304 	F_STRUCT(
305 		__field_struct(	struct mmiotrace_map,	map	)
306 		__field_desc(	resource_size_t, map,	phys	)
307 		__field_desc(	unsigned long,	map,	virt	)
308 		__field_desc(	unsigned long,	map,	len	)
309 		__field_desc(	int,		map,	map_id	)
310 		__field_desc(	unsigned char,	map,	opcode	)
311 	),
312 
313 	F_printk("%lx %lx %lx %d %x",
314 		 (unsigned long)__entry->phys, __entry->virt, __entry->len,
315 		 __entry->map_id, __entry->opcode)
316 );
317 
318 
319 #define TRACE_FUNC_SIZE 30
320 #define TRACE_FILE_SIZE 20
321 
322 FTRACE_ENTRY(branch, trace_branch,
323 
324 	TRACE_BRANCH,
325 
326 	F_STRUCT(
327 		__field(	unsigned int,	line				)
328 		__array(	char,		func,	TRACE_FUNC_SIZE+1	)
329 		__array(	char,		file,	TRACE_FILE_SIZE+1	)
330 		__field(	char,		correct				)
331 		__field(	char,		constant			)
332 	),
333 
334 	F_printk("%u:%s:%s (%u)%s",
335 		 __entry->line,
336 		 __entry->func, __entry->file, __entry->correct,
337 		 __entry->constant ? " CONSTANT" : "")
338 );
339 
340 
341 FTRACE_ENTRY(hwlat, hwlat_entry,
342 
343 	TRACE_HWLAT,
344 
345 	F_STRUCT(
346 		__field(	u64,			duration	)
347 		__field(	u64,			outer_duration	)
348 		__field(	u64,			nmi_total_ts	)
349 		__field_struct( struct timespec64,	timestamp	)
350 		__field_desc(	s64,	timestamp,	tv_sec		)
351 		__field_desc(	long,	timestamp,	tv_nsec		)
352 		__field(	unsigned int,		nmi_count	)
353 		__field(	unsigned int,		seqnum		)
354 		__field(	unsigned int,		count		)
355 	),
356 
357 	F_printk("cnt:%u\tts:%010llu.%010lu\tinner:%llu\touter:%llu\tcount:%d\tnmi-ts:%llu\tnmi-count:%u\n",
358 		 __entry->seqnum,
359 		 __entry->tv_sec,
360 		 __entry->tv_nsec,
361 		 __entry->duration,
362 		 __entry->outer_duration,
363 		 __entry->count,
364 		 __entry->nmi_total_ts,
365 		 __entry->nmi_count)
366 );
367 
368 #define FUNC_REPEATS_GET_DELTA_TS(entry)				\
369 	(((u64)(entry)->top_delta_ts << 32) | (entry)->bottom_delta_ts)	\
370 
371 FTRACE_ENTRY(func_repeats, func_repeats_entry,
372 
373 	TRACE_FUNC_REPEATS,
374 
375 	F_STRUCT(
376 		__field(	unsigned long,	ip		)
377 		__field(	unsigned long,	parent_ip	)
378 		__field(	u16	,	count		)
379 		__field(	u16	,	top_delta_ts	)
380 		__field(	u32	,	bottom_delta_ts	)
381 	),
382 
383 	F_printk(" %ps <-%ps\t(repeats:%u  delta: -%llu)",
384 		 (void *)__entry->ip,
385 		 (void *)__entry->parent_ip,
386 		 __entry->count,
387 		 FUNC_REPEATS_GET_DELTA_TS(__entry))
388 );
389 
390 FTRACE_ENTRY(osnoise, osnoise_entry,
391 
392 	TRACE_OSNOISE,
393 
394 	F_STRUCT(
395 		__field(	u64,			noise		)
396 		__field(	u64,			runtime		)
397 		__field(	u64,			max_sample	)
398 		__field(	unsigned int,		hw_count	)
399 		__field(	unsigned int,		nmi_count	)
400 		__field(	unsigned int,		irq_count	)
401 		__field(	unsigned int,		softirq_count	)
402 		__field(	unsigned int,		thread_count	)
403 	),
404 
405 	F_printk("noise:%llu\tmax_sample:%llu\thw:%u\tnmi:%u\tirq:%u\tsoftirq:%u\tthread:%u\n",
406 		 __entry->noise,
407 		 __entry->max_sample,
408 		 __entry->hw_count,
409 		 __entry->nmi_count,
410 		 __entry->irq_count,
411 		 __entry->softirq_count,
412 		 __entry->thread_count)
413 );
414 
415 FTRACE_ENTRY(timerlat, timerlat_entry,
416 
417 	TRACE_TIMERLAT,
418 
419 	F_STRUCT(
420 		__field(	unsigned int,		seqnum		)
421 		__field(	int,			context		)
422 		__field(	u64,			timer_latency	)
423 	),
424 
425 	F_printk("seq:%u\tcontext:%d\ttimer_latency:%llu\n",
426 		 __entry->seqnum,
427 		 __entry->context,
428 		 __entry->timer_latency)
429 );
430