tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef __PERF_RECORD_H
2#define __PERF_RECORD_H
3
4#include <limits.h>
5#include <stdio.h>
6
7#include "../perf.h"
8#include "map.h"
9#include "build-id.h"
10#include "perf_regs.h"
11
12struct mmap_event {
13 struct perf_event_header header;
14 u32 pid, tid;
15 u64 start;
16 u64 len;
17 u64 pgoff;
18 char filename[PATH_MAX];
19};
20
21struct mmap2_event {
22 struct perf_event_header header;
23 u32 pid, tid;
24 u64 start;
25 u64 len;
26 u64 pgoff;
27 u32 maj;
28 u32 min;
29 u64 ino;
30 u64 ino_generation;
31 u32 prot;
32 u32 flags;
33 char filename[PATH_MAX];
34};
35
36struct comm_event {
37 struct perf_event_header header;
38 u32 pid, tid;
39 char comm[16];
40};
41
42struct fork_event {
43 struct perf_event_header header;
44 u32 pid, ppid;
45 u32 tid, ptid;
46 u64 time;
47};
48
49struct lost_event {
50 struct perf_event_header header;
51 u64 id;
52 u64 lost;
53};
54
55/*
56 * PERF_FORMAT_ENABLED | PERF_FORMAT_RUNNING | PERF_FORMAT_ID
57 */
58struct read_event {
59 struct perf_event_header header;
60 u32 pid, tid;
61 u64 value;
62 u64 time_enabled;
63 u64 time_running;
64 u64 id;
65};
66
67struct throttle_event {
68 struct perf_event_header header;
69 u64 time;
70 u64 id;
71 u64 stream_id;
72};
73
74#define PERF_SAMPLE_MASK \
75 (PERF_SAMPLE_IP | PERF_SAMPLE_TID | \
76 PERF_SAMPLE_TIME | PERF_SAMPLE_ADDR | \
77 PERF_SAMPLE_ID | PERF_SAMPLE_STREAM_ID | \
78 PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD | \
79 PERF_SAMPLE_IDENTIFIER)
80
81/* perf sample has 16 bits size limit */
82#define PERF_SAMPLE_MAX_SIZE (1 << 16)
83
84struct sample_event {
85 struct perf_event_header header;
86 u64 array[];
87};
88
89struct regs_dump {
90 u64 abi;
91 u64 mask;
92 u64 *regs;
93
94 /* Cached values/mask filled by first register access. */
95 u64 cache_regs[PERF_REGS_MAX];
96 u64 cache_mask;
97};
98
99struct stack_dump {
100 u16 offset;
101 u64 size;
102 char *data;
103};
104
105struct sample_read_value {
106 u64 value;
107 u64 id;
108};
109
110struct sample_read {
111 u64 time_enabled;
112 u64 time_running;
113 union {
114 struct {
115 u64 nr;
116 struct sample_read_value *values;
117 } group;
118 struct sample_read_value one;
119 };
120};
121
122struct ip_callchain {
123 u64 nr;
124 u64 ips[0];
125};
126
127struct branch_flags {
128 u64 mispred:1;
129 u64 predicted:1;
130 u64 in_tx:1;
131 u64 abort:1;
132 u64 reserved:60;
133};
134
135struct branch_entry {
136 u64 from;
137 u64 to;
138 struct branch_flags flags;
139};
140
141struct branch_stack {
142 u64 nr;
143 struct branch_entry entries[0];
144};
145
146struct perf_sample {
147 u64 ip;
148 u32 pid, tid;
149 u64 time;
150 u64 addr;
151 u64 id;
152 u64 stream_id;
153 u64 period;
154 u64 weight;
155 u64 transaction;
156 u32 cpu;
157 u32 raw_size;
158 u64 data_src;
159 u32 flags;
160 u16 insn_len;
161 void *raw_data;
162 struct ip_callchain *callchain;
163 struct branch_stack *branch_stack;
164 struct regs_dump user_regs;
165 struct stack_dump user_stack;
166 struct sample_read read;
167};
168
169#define PERF_MEM_DATA_SRC_NONE \
170 (PERF_MEM_S(OP, NA) |\
171 PERF_MEM_S(LVL, NA) |\
172 PERF_MEM_S(SNOOP, NA) |\
173 PERF_MEM_S(LOCK, NA) |\
174 PERF_MEM_S(TLB, NA))
175
176struct build_id_event {
177 struct perf_event_header header;
178 pid_t pid;
179 u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))];
180 char filename[];
181};
182
183enum perf_user_event_type { /* above any possible kernel type */
184 PERF_RECORD_USER_TYPE_START = 64,
185 PERF_RECORD_HEADER_ATTR = 64,
186 PERF_RECORD_HEADER_EVENT_TYPE = 65, /* depreceated */
187 PERF_RECORD_HEADER_TRACING_DATA = 66,
188 PERF_RECORD_HEADER_BUILD_ID = 67,
189 PERF_RECORD_FINISHED_ROUND = 68,
190 PERF_RECORD_HEADER_MAX
191};
192
193/*
194 * The kernel collects the number of events it couldn't send in a stretch and
195 * when possible sends this number in a PERF_RECORD_LOST event. The number of
196 * such "chunks" of lost events is stored in .nr_events[PERF_EVENT_LOST] while
197 * total_lost tells exactly how many events the kernel in fact lost, i.e. it is
198 * the sum of all struct lost_event.lost fields reported.
199 *
200 * The total_period is needed because by default auto-freq is used, so
201 * multipling nr_events[PERF_EVENT_SAMPLE] by a frequency isn't possible to get
202 * the total number of low level events, it is necessary to to sum all struct
203 * sample_event.period and stash the result in total_period.
204 */
205struct events_stats {
206 u64 total_period;
207 u64 total_non_filtered_period;
208 u64 total_lost;
209 u64 total_invalid_chains;
210 u32 nr_events[PERF_RECORD_HEADER_MAX];
211 u32 nr_non_filtered_samples;
212 u32 nr_lost_warned;
213 u32 nr_unknown_events;
214 u32 nr_invalid_chains;
215 u32 nr_unknown_id;
216 u32 nr_unprocessable_samples;
217};
218
219struct attr_event {
220 struct perf_event_header header;
221 struct perf_event_attr attr;
222 u64 id[];
223};
224
225#define MAX_EVENT_NAME 64
226
227struct perf_trace_event_type {
228 u64 event_id;
229 char name[MAX_EVENT_NAME];
230};
231
232struct event_type_event {
233 struct perf_event_header header;
234 struct perf_trace_event_type event_type;
235};
236
237struct tracing_data_event {
238 struct perf_event_header header;
239 u32 size;
240};
241
242union perf_event {
243 struct perf_event_header header;
244 struct mmap_event mmap;
245 struct mmap2_event mmap2;
246 struct comm_event comm;
247 struct fork_event fork;
248 struct lost_event lost;
249 struct read_event read;
250 struct throttle_event throttle;
251 struct sample_event sample;
252 struct attr_event attr;
253 struct event_type_event event_type;
254 struct tracing_data_event tracing_data;
255 struct build_id_event build_id;
256};
257
258void perf_event__print_totals(void);
259
260struct perf_tool;
261struct thread_map;
262
263typedef int (*perf_event__handler_t)(struct perf_tool *tool,
264 union perf_event *event,
265 struct perf_sample *sample,
266 struct machine *machine);
267
268int perf_event__synthesize_thread_map(struct perf_tool *tool,
269 struct thread_map *threads,
270 perf_event__handler_t process,
271 struct machine *machine, bool mmap_data);
272int perf_event__synthesize_threads(struct perf_tool *tool,
273 perf_event__handler_t process,
274 struct machine *machine, bool mmap_data);
275int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
276 perf_event__handler_t process,
277 struct machine *machine);
278
279int perf_event__synthesize_modules(struct perf_tool *tool,
280 perf_event__handler_t process,
281 struct machine *machine);
282
283int perf_event__process_comm(struct perf_tool *tool,
284 union perf_event *event,
285 struct perf_sample *sample,
286 struct machine *machine);
287int perf_event__process_lost(struct perf_tool *tool,
288 union perf_event *event,
289 struct perf_sample *sample,
290 struct machine *machine);
291int perf_event__process_mmap(struct perf_tool *tool,
292 union perf_event *event,
293 struct perf_sample *sample,
294 struct machine *machine);
295int perf_event__process_mmap2(struct perf_tool *tool,
296 union perf_event *event,
297 struct perf_sample *sample,
298 struct machine *machine);
299int perf_event__process_fork(struct perf_tool *tool,
300 union perf_event *event,
301 struct perf_sample *sample,
302 struct machine *machine);
303int perf_event__process_exit(struct perf_tool *tool,
304 union perf_event *event,
305 struct perf_sample *sample,
306 struct machine *machine);
307int perf_event__process(struct perf_tool *tool,
308 union perf_event *event,
309 struct perf_sample *sample,
310 struct machine *machine);
311
312struct addr_location;
313
314int perf_event__preprocess_sample(const union perf_event *event,
315 struct machine *machine,
316 struct addr_location *al,
317 struct perf_sample *sample);
318
319struct thread;
320
321bool is_bts_event(struct perf_event_attr *attr);
322bool sample_addr_correlates_sym(struct perf_event_attr *attr);
323void perf_event__preprocess_sample_addr(union perf_event *event,
324 struct perf_sample *sample,
325 struct machine *machine,
326 struct thread *thread,
327 struct addr_location *al);
328
329const char *perf_event__name(unsigned int id);
330
331size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type,
332 u64 read_format);
333int perf_event__synthesize_sample(union perf_event *event, u64 type,
334 u64 read_format,
335 const struct perf_sample *sample,
336 bool swapped);
337
338int perf_event__synthesize_mmap_events(struct perf_tool *tool,
339 union perf_event *event,
340 pid_t pid, pid_t tgid,
341 perf_event__handler_t process,
342 struct machine *machine,
343 bool mmap_data);
344
345size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp);
346size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp);
347size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp);
348size_t perf_event__fprintf_task(union perf_event *event, FILE *fp);
349size_t perf_event__fprintf(union perf_event *event, FILE *fp);
350
351u64 kallsyms__get_function_start(const char *kallsyms_filename,
352 const char *symbol_name);
353
354#endif /* __PERF_RECORD_H */