Commit | Line | Data |
---|---|---|
234fbbf5 | 1 | #include <linux/types.h> |
2f7db555 | 2 | #include <linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */ |
d7e404af | 3 | #include <api/fs/fs.h> |
234fbbf5 ACM |
4 | #include "event.h" |
5 | #include "debug.h" | |
b3cef7f6 | 6 | #include "hist.h" |
f62d3f0f | 7 | #include "machine.h" |
c410a338 | 8 | #include "sort.h" |
234fbbf5 | 9 | #include "string.h" |
c410a338 | 10 | #include "strlist.h" |
62daacb5 | 11 | #include "thread.h" |
7c940c18 | 12 | #include "thread_map.h" |
c506c96b | 13 | #include "symbol/kallsyms.h" |
67424342 JO |
14 | #include "asm/bug.h" |
15 | #include "stat.h" | |
234fbbf5 | 16 | |
8115d60c | 17 | static const char *perf_event__names[] = { |
3cb6d154 FW |
18 | [0] = "TOTAL", |
19 | [PERF_RECORD_MMAP] = "MMAP", | |
5c5e854b | 20 | [PERF_RECORD_MMAP2] = "MMAP2", |
3cb6d154 FW |
21 | [PERF_RECORD_LOST] = "LOST", |
22 | [PERF_RECORD_COMM] = "COMM", | |
23 | [PERF_RECORD_EXIT] = "EXIT", | |
24 | [PERF_RECORD_THROTTLE] = "THROTTLE", | |
25 | [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", | |
26 | [PERF_RECORD_FORK] = "FORK", | |
27 | [PERF_RECORD_READ] = "READ", | |
28 | [PERF_RECORD_SAMPLE] = "SAMPLE", | |
4a96f7a0 | 29 | [PERF_RECORD_AUX] = "AUX", |
0ad21f68 | 30 | [PERF_RECORD_ITRACE_START] = "ITRACE_START", |
c4937a91 | 31 | [PERF_RECORD_LOST_SAMPLES] = "LOST_SAMPLES", |
0286039f AH |
32 | [PERF_RECORD_SWITCH] = "SWITCH", |
33 | [PERF_RECORD_SWITCH_CPU_WIDE] = "SWITCH_CPU_WIDE", | |
3cb6d154 FW |
34 | [PERF_RECORD_HEADER_ATTR] = "ATTR", |
35 | [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", | |
36 | [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", | |
37 | [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", | |
38 | [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND", | |
3c659eed | 39 | [PERF_RECORD_ID_INDEX] = "ID_INDEX", |
a16ac023 AH |
40 | [PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO", |
41 | [PERF_RECORD_AUXTRACE] = "AUXTRACE", | |
e9bf54d2 | 42 | [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR", |
5f3339d2 | 43 | [PERF_RECORD_THREAD_MAP] = "THREAD_MAP", |
6640b6c2 | 44 | [PERF_RECORD_CPU_MAP] = "CPU_MAP", |
374fb9e3 | 45 | [PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG", |
d80518c9 | 46 | [PERF_RECORD_STAT] = "STAT", |
2d8f0f18 | 47 | [PERF_RECORD_STAT_ROUND] = "STAT_ROUND", |
ffe77725 | 48 | [PERF_RECORD_EVENT_UPDATE] = "EVENT_UPDATE", |
46bc29b9 | 49 | [PERF_RECORD_TIME_CONV] = "TIME_CONV", |
c8446b9b ACM |
50 | }; |
51 | ||
8115d60c | 52 | const char *perf_event__name(unsigned int id) |
3835bc00 | 53 | { |
8115d60c | 54 | if (id >= ARRAY_SIZE(perf_event__names)) |
3835bc00 | 55 | return "INVALID"; |
8115d60c | 56 | if (!perf_event__names[id]) |
3835bc00 | 57 | return "UNKNOWN"; |
8115d60c | 58 | return perf_event__names[id]; |
3835bc00 TG |
59 | } |
60 | ||
3ea223ad ACM |
61 | static int perf_tool__process_synth_event(struct perf_tool *tool, |
62 | union perf_event *event, | |
63 | struct machine *machine, | |
64 | perf_event__handler_t process) | |
65 | { | |
66 | struct perf_sample synth_sample = { | |
640c03ce ACM |
67 | .pid = -1, |
68 | .tid = -1, | |
69 | .time = -1, | |
70 | .stream_id = -1, | |
71 | .cpu = -1, | |
72 | .period = 1, | |
3ea223ad ACM |
73 | .cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK, |
74 | }; | |
75 | ||
76 | return process(tool, event, &synth_sample, machine); | |
640c03ce ACM |
77 | }; |
78 | ||
5aa0b030 DA |
79 | /* |
80 | * Assumes that the first 4095 bytes of /proc/pid/stat contains | |
ca6c41c5 | 81 | * the comm, tgid and ppid. |
5aa0b030 | 82 | */ |
ca6c41c5 DA |
83 | static int perf_event__get_comm_ids(pid_t pid, char *comm, size_t len, |
84 | pid_t *tgid, pid_t *ppid) | |
234fbbf5 | 85 | { |
234fbbf5 | 86 | char filename[PATH_MAX]; |
5aa0b030 DA |
87 | char bf[4096]; |
88 | int fd; | |
38349665 AH |
89 | size_t size = 0; |
90 | ssize_t n; | |
ca6c41c5 DA |
91 | char *nl, *name, *tgids, *ppids; |
92 | ||
93 | *tgid = -1; | |
94 | *ppid = -1; | |
234fbbf5 ACM |
95 | |
96 | snprintf(filename, sizeof(filename), "/proc/%d/status", pid); | |
97 | ||
5aa0b030 DA |
98 | fd = open(filename, O_RDONLY); |
99 | if (fd < 0) { | |
234fbbf5 | 100 | pr_debug("couldn't open %s\n", filename); |
ca6c41c5 | 101 | return -1; |
234fbbf5 ACM |
102 | } |
103 | ||
5aa0b030 DA |
104 | n = read(fd, bf, sizeof(bf) - 1); |
105 | close(fd); | |
106 | if (n <= 0) { | |
ca6c41c5 | 107 | pr_warning("Couldn't get COMM, tigd and ppid for pid %d\n", |
5aa0b030 DA |
108 | pid); |
109 | return -1; | |
234fbbf5 | 110 | } |
5aa0b030 | 111 | bf[n] = '\0'; |
234fbbf5 | 112 | |
5aa0b030 DA |
113 | name = strstr(bf, "Name:"); |
114 | tgids = strstr(bf, "Tgid:"); | |
ca6c41c5 | 115 | ppids = strstr(bf, "PPid:"); |
5aa0b030 DA |
116 | |
117 | if (name) { | |
118 | name += 5; /* strlen("Name:") */ | |
119 | ||
120 | while (*name && isspace(*name)) | |
121 | ++name; | |
122 | ||
123 | nl = strchr(name, '\n'); | |
124 | if (nl) | |
125 | *nl = '\0'; | |
126 | ||
127 | size = strlen(name); | |
128 | if (size >= len) | |
129 | size = len - 1; | |
130 | memcpy(comm, name, size); | |
131 | comm[size] = '\0'; | |
132 | } else { | |
133 | pr_debug("Name: string not found for pid %d\n", pid); | |
134 | } | |
135 | ||
136 | if (tgids) { | |
137 | tgids += 5; /* strlen("Tgid:") */ | |
ca6c41c5 | 138 | *tgid = atoi(tgids); |
5aa0b030 DA |
139 | } else { |
140 | pr_debug("Tgid: string not found for pid %d\n", pid); | |
141 | } | |
f5faf726 | 142 | |
ca6c41c5 DA |
143 | if (ppids) { |
144 | ppids += 5; /* strlen("PPid:") */ | |
145 | *ppid = atoi(ppids); | |
146 | } else { | |
147 | pr_debug("PPid: string not found for pid %d\n", pid); | |
148 | } | |
149 | ||
150 | return 0; | |
f5faf726 DA |
151 | } |
152 | ||
ca6c41c5 DA |
153 | static int perf_event__prepare_comm(union perf_event *event, pid_t pid, |
154 | struct machine *machine, | |
155 | pid_t *tgid, pid_t *ppid) | |
f5faf726 | 156 | { |
f5faf726 | 157 | size_t size; |
ca6c41c5 DA |
158 | |
159 | *ppid = -1; | |
f5faf726 DA |
160 | |
161 | memset(&event->comm, 0, sizeof(event->comm)); | |
162 | ||
ca6c41c5 DA |
163 | if (machine__is_host(machine)) { |
164 | if (perf_event__get_comm_ids(pid, event->comm.comm, | |
165 | sizeof(event->comm.comm), | |
166 | tgid, ppid) != 0) { | |
167 | return -1; | |
168 | } | |
169 | } else { | |
170 | *tgid = machine->pid; | |
171 | } | |
f5db57c4 | 172 | |
ca6c41c5 DA |
173 | if (*tgid < 0) |
174 | return -1; | |
f5faf726 | 175 | |
ca6c41c5 | 176 | event->comm.pid = *tgid; |
9c90a61c | 177 | event->comm.header.type = PERF_RECORD_COMM; |
f5faf726 DA |
178 | |
179 | size = strlen(event->comm.comm) + 1; | |
9ac3e487 | 180 | size = PERF_ALIGN(size, sizeof(u64)); |
743eb868 | 181 | memset(event->comm.comm + size, 0, machine->id_hdr_size); |
9c90a61c ACM |
182 | event->comm.header.size = (sizeof(event->comm) - |
183 | (sizeof(event->comm.comm) - size) + | |
743eb868 | 184 | machine->id_hdr_size); |
bfd66cc7 | 185 | event->comm.tid = pid; |
ca6c41c5 DA |
186 | |
187 | return 0; | |
4aa5f4f7 ACM |
188 | } |
189 | ||
e803cf97 | 190 | pid_t perf_event__synthesize_comm(struct perf_tool *tool, |
4aa5f4f7 ACM |
191 | union perf_event *event, pid_t pid, |
192 | perf_event__handler_t process, | |
193 | struct machine *machine) | |
194 | { | |
ca6c41c5 | 195 | pid_t tgid, ppid; |
4aa5f4f7 | 196 | |
ca6c41c5 DA |
197 | if (perf_event__prepare_comm(event, pid, machine, &tgid, &ppid) != 0) |
198 | return -1; | |
f5faf726 | 199 | |
3ea223ad | 200 | if (perf_tool__process_synth_event(tool, event, machine, process) != 0) |
bfd66cc7 | 201 | return -1; |
234fbbf5 | 202 | |
9c90a61c | 203 | return tgid; |
234fbbf5 ACM |
204 | } |
205 | ||
363b785f | 206 | static int perf_event__synthesize_fork(struct perf_tool *tool, |
ca6c41c5 DA |
207 | union perf_event *event, |
208 | pid_t pid, pid_t tgid, pid_t ppid, | |
209 | perf_event__handler_t process, | |
363b785f DZ |
210 | struct machine *machine) |
211 | { | |
212 | memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size); | |
213 | ||
7764a385 DA |
214 | /* |
215 | * for main thread set parent to ppid from status file. For other | |
216 | * threads set parent pid to main thread. ie., assume main thread | |
217 | * spawns all threads in a process | |
218 | */ | |
219 | if (tgid == pid) { | |
220 | event->fork.ppid = ppid; | |
221 | event->fork.ptid = ppid; | |
222 | } else { | |
223 | event->fork.ppid = tgid; | |
224 | event->fork.ptid = tgid; | |
225 | } | |
363b785f DZ |
226 | event->fork.pid = tgid; |
227 | event->fork.tid = pid; | |
228 | event->fork.header.type = PERF_RECORD_FORK; | |
229 | ||
230 | event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size); | |
231 | ||
3ea223ad | 232 | if (perf_tool__process_synth_event(tool, event, machine, process) != 0) |
363b785f DZ |
233 | return -1; |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
a18382b6 JO |
238 | int perf_event__synthesize_mmap_events(struct perf_tool *tool, |
239 | union perf_event *event, | |
240 | pid_t pid, pid_t tgid, | |
241 | perf_event__handler_t process, | |
242 | struct machine *machine, | |
9d9cad76 KL |
243 | bool mmap_data, |
244 | unsigned int proc_map_timeout) | |
234fbbf5 ACM |
245 | { |
246 | char filename[PATH_MAX]; | |
247 | FILE *fp; | |
930e6fcd KL |
248 | unsigned long long t; |
249 | bool truncation = false; | |
9d9cad76 | 250 | unsigned long long timeout = proc_map_timeout * 1000000ULL; |
1e6d5322 | 251 | int rc = 0; |
d7e404af WN |
252 | const char *hugetlbfs_mnt = hugetlbfs__mountpoint(); |
253 | int hugetlbfs_mnt_len = hugetlbfs_mnt ? strlen(hugetlbfs_mnt) : 0; | |
234fbbf5 | 254 | |
c239c25a DY |
255 | if (machine__is_default_guest(machine)) |
256 | return 0; | |
257 | ||
99563465 DY |
258 | snprintf(filename, sizeof(filename), "%s/proc/%d/maps", |
259 | machine->root_dir, pid); | |
234fbbf5 ACM |
260 | |
261 | fp = fopen(filename, "r"); | |
262 | if (fp == NULL) { | |
263 | /* | |
264 | * We raced with a task exiting - just return: | |
265 | */ | |
266 | pr_debug("couldn't open %s\n", filename); | |
267 | return -1; | |
268 | } | |
269 | ||
a5a5ba72 | 270 | event->header.type = PERF_RECORD_MMAP2; |
930e6fcd | 271 | t = rdclock(); |
9c90a61c | 272 | |
234fbbf5 | 273 | while (1) { |
60648033 NK |
274 | char bf[BUFSIZ]; |
275 | char prot[5]; | |
276 | char execname[PATH_MAX]; | |
277 | char anonstr[] = "//anon"; | |
a5a5ba72 | 278 | unsigned int ino; |
234fbbf5 | 279 | size_t size; |
5c5e854b | 280 | ssize_t n; |
60648033 | 281 | |
234fbbf5 ACM |
282 | if (fgets(bf, sizeof(bf), fp) == NULL) |
283 | break; | |
284 | ||
9d9cad76 KL |
285 | if ((rdclock() - t) > timeout) { |
286 | pr_warning("Reading %s time out. " | |
287 | "You may want to increase " | |
288 | "the time limit by --proc-map-timeout\n", | |
289 | filename); | |
930e6fcd KL |
290 | truncation = true; |
291 | goto out; | |
292 | } | |
293 | ||
60648033 NK |
294 | /* ensure null termination since stack will be reused. */ |
295 | strcpy(execname, ""); | |
296 | ||
234fbbf5 | 297 | /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */ |
89fee59b | 298 | n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %[^\n]\n", |
a5a5ba72 DZ |
299 | &event->mmap2.start, &event->mmap2.len, prot, |
300 | &event->mmap2.pgoff, &event->mmap2.maj, | |
301 | &event->mmap2.min, | |
302 | &ino, execname); | |
303 | ||
9d4ecc88 DZ |
304 | /* |
305 | * Anon maps don't have the execname. | |
306 | */ | |
a5a5ba72 | 307 | if (n < 7) |
5c5e854b | 308 | continue; |
a5a5ba72 DZ |
309 | |
310 | event->mmap2.ino = (u64)ino; | |
311 | ||
62605dc5 ACM |
312 | /* |
313 | * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c | |
314 | */ | |
73547aac DY |
315 | if (machine__is_host(machine)) |
316 | event->header.misc = PERF_RECORD_MISC_USER; | |
317 | else | |
318 | event->header.misc = PERF_RECORD_MISC_GUEST_USER; | |
60648033 | 319 | |
7ef80703 DZ |
320 | /* map protection and flags bits */ |
321 | event->mmap2.prot = 0; | |
322 | event->mmap2.flags = 0; | |
323 | if (prot[0] == 'r') | |
324 | event->mmap2.prot |= PROT_READ; | |
325 | if (prot[1] == 'w') | |
326 | event->mmap2.prot |= PROT_WRITE; | |
327 | if (prot[2] == 'x') | |
328 | event->mmap2.prot |= PROT_EXEC; | |
329 | ||
330 | if (prot[3] == 's') | |
331 | event->mmap2.flags |= MAP_SHARED; | |
332 | else | |
333 | event->mmap2.flags |= MAP_PRIVATE; | |
334 | ||
62605dc5 ACM |
335 | if (prot[2] != 'x') { |
336 | if (!mmap_data || prot[0] != 'r') | |
337 | continue; | |
338 | ||
339 | event->header.misc |= PERF_RECORD_MISC_MMAP_DATA; | |
340 | } | |
60648033 | 341 | |
930e6fcd KL |
342 | out: |
343 | if (truncation) | |
344 | event->header.misc |= PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT; | |
345 | ||
60648033 NK |
346 | if (!strcmp(execname, "")) |
347 | strcpy(execname, anonstr); | |
fbef103f | 348 | |
973186ca AH |
349 | if (hugetlbfs_mnt_len && |
350 | !strncmp(execname, hugetlbfs_mnt, hugetlbfs_mnt_len)) { | |
d7e404af WN |
351 | strcpy(execname, anonstr); |
352 | event->mmap2.flags |= MAP_HUGETLB; | |
353 | } | |
60648033 NK |
354 | |
355 | size = strlen(execname) + 1; | |
a5a5ba72 | 356 | memcpy(event->mmap2.filename, execname, size); |
60648033 | 357 | size = PERF_ALIGN(size, sizeof(u64)); |
a5a5ba72 DZ |
358 | event->mmap2.len -= event->mmap.start; |
359 | event->mmap2.header.size = (sizeof(event->mmap2) - | |
360 | (sizeof(event->mmap2.filename) - size)); | |
361 | memset(event->mmap2.filename + size, 0, machine->id_hdr_size); | |
362 | event->mmap2.header.size += machine->id_hdr_size; | |
363 | event->mmap2.pid = tgid; | |
364 | event->mmap2.tid = pid; | |
60648033 | 365 | |
3ea223ad | 366 | if (perf_tool__process_synth_event(tool, event, machine, process) != 0) { |
60648033 NK |
367 | rc = -1; |
368 | break; | |
234fbbf5 | 369 | } |
930e6fcd KL |
370 | |
371 | if (truncation) | |
372 | break; | |
234fbbf5 ACM |
373 | } |
374 | ||
375 | fclose(fp); | |
1e6d5322 | 376 | return rc; |
234fbbf5 ACM |
377 | } |
378 | ||
45694aa7 | 379 | int perf_event__synthesize_modules(struct perf_tool *tool, |
d20deb64 | 380 | perf_event__handler_t process, |
8115d60c | 381 | struct machine *machine) |
b7cece76 | 382 | { |
1e6d5322 | 383 | int rc = 0; |
4bb7123d | 384 | struct map *pos; |
23346f21 | 385 | struct map_groups *kmaps = &machine->kmaps; |
1eee78ae | 386 | struct maps *maps = &kmaps->maps[MAP__FUNCTION]; |
8115d60c | 387 | union perf_event *event = zalloc((sizeof(event->mmap) + |
743eb868 | 388 | machine->id_hdr_size)); |
9c90a61c ACM |
389 | if (event == NULL) { |
390 | pr_debug("Not enough memory synthesizing mmap event " | |
391 | "for kernel modules\n"); | |
392 | return -1; | |
393 | } | |
394 | ||
395 | event->header.type = PERF_RECORD_MMAP; | |
b7cece76 | 396 | |
a1645ce1 ZY |
397 | /* |
398 | * kernel uses 0 for user space maps, see kernel/perf_event.c | |
399 | * __perf_event_mmap | |
400 | */ | |
23346f21 | 401 | if (machine__is_host(machine)) |
9c90a61c | 402 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 403 | else |
9c90a61c | 404 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
a1645ce1 | 405 | |
4bb7123d | 406 | for (pos = maps__first(maps); pos; pos = map__next(pos)) { |
b7cece76 | 407 | size_t size; |
b7cece76 | 408 | |
ab9c2bdc | 409 | if (__map__is_kernel(pos)) |
b7cece76 ACM |
410 | continue; |
411 | ||
9ac3e487 | 412 | size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); |
9c90a61c ACM |
413 | event->mmap.header.type = PERF_RECORD_MMAP; |
414 | event->mmap.header.size = (sizeof(event->mmap) - | |
415 | (sizeof(event->mmap.filename) - size)); | |
743eb868 ACM |
416 | memset(event->mmap.filename + size, 0, machine->id_hdr_size); |
417 | event->mmap.header.size += machine->id_hdr_size; | |
9c90a61c ACM |
418 | event->mmap.start = pos->start; |
419 | event->mmap.len = pos->end - pos->start; | |
420 | event->mmap.pid = machine->pid; | |
421 | ||
422 | memcpy(event->mmap.filename, pos->dso->long_name, | |
b7cece76 | 423 | pos->dso->long_name_len + 1); |
3ea223ad | 424 | if (perf_tool__process_synth_event(tool, event, machine, process) != 0) { |
1e6d5322 DA |
425 | rc = -1; |
426 | break; | |
427 | } | |
b7cece76 ACM |
428 | } |
429 | ||
9c90a61c | 430 | free(event); |
1e6d5322 | 431 | return rc; |
b7cece76 ACM |
432 | } |
433 | ||
8115d60c ACM |
434 | static int __event__synthesize_thread(union perf_event *comm_event, |
435 | union perf_event *mmap_event, | |
363b785f | 436 | union perf_event *fork_event, |
defd8d38 DA |
437 | pid_t pid, int full, |
438 | perf_event__handler_t process, | |
45694aa7 | 439 | struct perf_tool *tool, |
9d9cad76 KL |
440 | struct machine *machine, |
441 | bool mmap_data, | |
442 | unsigned int proc_map_timeout) | |
234fbbf5 | 443 | { |
bfd66cc7 DZ |
444 | char filename[PATH_MAX]; |
445 | DIR *tasks; | |
7093b4c9 | 446 | struct dirent *dirent; |
ca6c41c5 | 447 | pid_t tgid, ppid; |
d998b732 | 448 | int rc = 0; |
bfd66cc7 DZ |
449 | |
450 | /* special case: only send one comm event using passed in pid */ | |
451 | if (!full) { | |
452 | tgid = perf_event__synthesize_comm(tool, comm_event, pid, | |
453 | process, machine); | |
454 | ||
455 | if (tgid == -1) | |
456 | return -1; | |
457 | ||
458 | return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid, | |
9d9cad76 KL |
459 | process, machine, mmap_data, |
460 | proc_map_timeout); | |
bfd66cc7 DZ |
461 | } |
462 | ||
463 | if (machine__is_default_guest(machine)) | |
464 | return 0; | |
465 | ||
466 | snprintf(filename, sizeof(filename), "%s/proc/%d/task", | |
467 | machine->root_dir, pid); | |
468 | ||
469 | tasks = opendir(filename); | |
470 | if (tasks == NULL) { | |
471 | pr_debug("couldn't open %s\n", filename); | |
472 | return 0; | |
473 | } | |
474 | ||
7093b4c9 | 475 | while ((dirent = readdir(tasks)) != NULL) { |
bfd66cc7 | 476 | char *end; |
bfd66cc7 DZ |
477 | pid_t _pid; |
478 | ||
7093b4c9 | 479 | _pid = strtol(dirent->d_name, &end, 10); |
bfd66cc7 DZ |
480 | if (*end) |
481 | continue; | |
482 | ||
d998b732 | 483 | rc = -1; |
ca6c41c5 DA |
484 | if (perf_event__prepare_comm(comm_event, _pid, machine, |
485 | &tgid, &ppid) != 0) | |
d998b732 | 486 | break; |
bfd66cc7 | 487 | |
4aa5f4f7 | 488 | if (perf_event__synthesize_fork(tool, fork_event, _pid, tgid, |
ca6c41c5 | 489 | ppid, process, machine) < 0) |
d998b732 | 490 | break; |
4aa5f4f7 ACM |
491 | /* |
492 | * Send the prepared comm event | |
493 | */ | |
3ea223ad | 494 | if (perf_tool__process_synth_event(tool, comm_event, machine, process) != 0) |
d998b732 | 495 | break; |
4aa5f4f7 | 496 | |
d998b732 | 497 | rc = 0; |
363b785f DZ |
498 | if (_pid == pid) { |
499 | /* process the parent's maps too */ | |
500 | rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid, | |
9d9cad76 | 501 | process, machine, mmap_data, proc_map_timeout); |
d998b732 ACM |
502 | if (rc) |
503 | break; | |
363b785f | 504 | } |
bfd66cc7 DZ |
505 | } |
506 | ||
507 | closedir(tasks); | |
d998b732 | 508 | return rc; |
234fbbf5 ACM |
509 | } |
510 | ||
45694aa7 | 511 | int perf_event__synthesize_thread_map(struct perf_tool *tool, |
d20deb64 | 512 | struct thread_map *threads, |
7c940c18 | 513 | perf_event__handler_t process, |
62605dc5 | 514 | struct machine *machine, |
9d9cad76 KL |
515 | bool mmap_data, |
516 | unsigned int proc_map_timeout) | |
9c90a61c | 517 | { |
363b785f | 518 | union perf_event *comm_event, *mmap_event, *fork_event; |
defd8d38 | 519 | int err = -1, thread, j; |
9c90a61c | 520 | |
743eb868 | 521 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
522 | if (comm_event == NULL) |
523 | goto out; | |
524 | ||
b0fb978e | 525 | mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size); |
9c90a61c ACM |
526 | if (mmap_event == NULL) |
527 | goto out_free_comm; | |
528 | ||
363b785f DZ |
529 | fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size); |
530 | if (fork_event == NULL) | |
531 | goto out_free_mmap; | |
532 | ||
401b8e13 ACM |
533 | err = 0; |
534 | for (thread = 0; thread < threads->nr; ++thread) { | |
535 | if (__event__synthesize_thread(comm_event, mmap_event, | |
363b785f | 536 | fork_event, |
e13798c7 | 537 | thread_map__pid(threads, thread), 0, |
62605dc5 | 538 | process, tool, machine, |
9d9cad76 | 539 | mmap_data, proc_map_timeout)) { |
401b8e13 ACM |
540 | err = -1; |
541 | break; | |
542 | } | |
defd8d38 DA |
543 | |
544 | /* | |
545 | * comm.pid is set to thread group id by | |
546 | * perf_event__synthesize_comm | |
547 | */ | |
e13798c7 | 548 | if ((int) comm_event->comm.pid != thread_map__pid(threads, thread)) { |
defd8d38 DA |
549 | bool need_leader = true; |
550 | ||
551 | /* is thread group leader in thread_map? */ | |
552 | for (j = 0; j < threads->nr; ++j) { | |
e13798c7 | 553 | if ((int) comm_event->comm.pid == thread_map__pid(threads, j)) { |
defd8d38 DA |
554 | need_leader = false; |
555 | break; | |
556 | } | |
557 | } | |
558 | ||
559 | /* if not, generate events for it */ | |
560 | if (need_leader && | |
62605dc5 | 561 | __event__synthesize_thread(comm_event, mmap_event, |
363b785f | 562 | fork_event, |
62605dc5 ACM |
563 | comm_event->comm.pid, 0, |
564 | process, tool, machine, | |
9d9cad76 | 565 | mmap_data, proc_map_timeout)) { |
defd8d38 DA |
566 | err = -1; |
567 | break; | |
568 | } | |
569 | } | |
401b8e13 | 570 | } |
363b785f DZ |
571 | free(fork_event); |
572 | out_free_mmap: | |
9c90a61c ACM |
573 | free(mmap_event); |
574 | out_free_comm: | |
575 | free(comm_event); | |
576 | out: | |
577 | return err; | |
578 | } | |
579 | ||
45694aa7 | 580 | int perf_event__synthesize_threads(struct perf_tool *tool, |
d20deb64 | 581 | perf_event__handler_t process, |
9d9cad76 KL |
582 | struct machine *machine, |
583 | bool mmap_data, | |
584 | unsigned int proc_map_timeout) | |
234fbbf5 ACM |
585 | { |
586 | DIR *proc; | |
99563465 | 587 | char proc_path[PATH_MAX]; |
7093b4c9 | 588 | struct dirent *dirent; |
363b785f | 589 | union perf_event *comm_event, *mmap_event, *fork_event; |
9c90a61c ACM |
590 | int err = -1; |
591 | ||
574799bf NK |
592 | if (machine__is_default_guest(machine)) |
593 | return 0; | |
594 | ||
743eb868 | 595 | comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size); |
9c90a61c ACM |
596 | if (comm_event == NULL) |
597 | goto out; | |
598 | ||
b0fb978e | 599 | mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size); |
9c90a61c ACM |
600 | if (mmap_event == NULL) |
601 | goto out_free_comm; | |
234fbbf5 | 602 | |
363b785f DZ |
603 | fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size); |
604 | if (fork_event == NULL) | |
605 | goto out_free_mmap; | |
606 | ||
99563465 DY |
607 | snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir); |
608 | proc = opendir(proc_path); | |
609 | ||
9c90a61c | 610 | if (proc == NULL) |
363b785f | 611 | goto out_free_fork; |
234fbbf5 | 612 | |
7093b4c9 | 613 | while ((dirent = readdir(proc)) != NULL) { |
234fbbf5 | 614 | char *end; |
7093b4c9 | 615 | pid_t pid = strtol(dirent->d_name, &end, 10); |
234fbbf5 ACM |
616 | |
617 | if (*end) /* only interested in proper numerical dirents */ | |
618 | continue; | |
ba361c92 ACM |
619 | /* |
620 | * We may race with exiting thread, so don't stop just because | |
621 | * one thread couldn't be synthesized. | |
622 | */ | |
363b785f | 623 | __event__synthesize_thread(comm_event, mmap_event, fork_event, pid, |
9d9cad76 KL |
624 | 1, process, tool, machine, mmap_data, |
625 | proc_map_timeout); | |
234fbbf5 ACM |
626 | } |
627 | ||
9c90a61c | 628 | err = 0; |
1e6d5322 | 629 | closedir(proc); |
363b785f DZ |
630 | out_free_fork: |
631 | free(fork_event); | |
9c90a61c ACM |
632 | out_free_mmap: |
633 | free(mmap_event); | |
634 | out_free_comm: | |
635 | free(comm_event); | |
636 | out: | |
637 | return err; | |
234fbbf5 | 638 | } |
62daacb5 | 639 | |
56b03f3c ACM |
640 | struct process_symbol_args { |
641 | const char *name; | |
642 | u64 start; | |
643 | }; | |
644 | ||
3b01a413 | 645 | static int find_symbol_cb(void *arg, const char *name, char type, |
82151520 | 646 | u64 start) |
56b03f3c ACM |
647 | { |
648 | struct process_symbol_args *args = arg; | |
649 | ||
881516eb ACM |
650 | /* |
651 | * Must be a function or at least an alias, as in PARISC64, where "_text" is | |
652 | * an 'A' to the same address as "_stext". | |
653 | */ | |
654 | if (!(symbol_type__is_a(type, MAP__FUNCTION) || | |
655 | type == 'A') || strcmp(name, args->name)) | |
56b03f3c ACM |
656 | return 0; |
657 | ||
658 | args->start = start; | |
659 | return 1; | |
660 | } | |
661 | ||
29b596b5 AH |
662 | u64 kallsyms__get_function_start(const char *kallsyms_filename, |
663 | const char *symbol_name) | |
664 | { | |
665 | struct process_symbol_args args = { .name = symbol_name, }; | |
666 | ||
667 | if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0) | |
668 | return 0; | |
669 | ||
670 | return args.start; | |
671 | } | |
672 | ||
45694aa7 | 673 | int perf_event__synthesize_kernel_mmap(struct perf_tool *tool, |
d20deb64 | 674 | perf_event__handler_t process, |
0ae617be | 675 | struct machine *machine) |
56b03f3c ACM |
676 | { |
677 | size_t size; | |
0ae617be | 678 | const char *mmap_name; |
a1645ce1 | 679 | char name_buff[PATH_MAX]; |
a5e813c6 | 680 | struct map *map = machine__kernel_map(machine); |
0ae617be | 681 | struct kmap *kmap; |
9c90a61c | 682 | int err; |
a5c2a4c9 AK |
683 | union perf_event *event; |
684 | ||
3dc6c1d5 WN |
685 | if (symbol_conf.kptr_restrict) |
686 | return -1; | |
77e65977 | 687 | if (map == NULL) |
a5c2a4c9 AK |
688 | return -1; |
689 | ||
56b03f3c ACM |
690 | /* |
691 | * We should get this from /sys/kernel/sections/.text, but till that is | |
692 | * available use this, and after it is use this as a fallback for older | |
693 | * kernels. | |
694 | */ | |
a5c2a4c9 | 695 | event = zalloc((sizeof(event->mmap) + machine->id_hdr_size)); |
9c90a61c ACM |
696 | if (event == NULL) { |
697 | pr_debug("Not enough memory synthesizing mmap event " | |
698 | "for kernel modules\n"); | |
699 | return -1; | |
700 | } | |
56b03f3c | 701 | |
48ea8f54 | 702 | mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); |
23346f21 | 703 | if (machine__is_host(machine)) { |
a1645ce1 ZY |
704 | /* |
705 | * kernel uses PERF_RECORD_MISC_USER for user space maps, | |
706 | * see kernel/perf_event.c __perf_event_mmap | |
707 | */ | |
9c90a61c | 708 | event->header.misc = PERF_RECORD_MISC_KERNEL; |
a1645ce1 | 709 | } else { |
9c90a61c | 710 | event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL; |
0b9e01a4 | 711 | } |
56b03f3c | 712 | |
0ae617be | 713 | kmap = map__kmap(map); |
9c90a61c | 714 | size = snprintf(event->mmap.filename, sizeof(event->mmap.filename), |
0ae617be | 715 | "%s%s", mmap_name, kmap->ref_reloc_sym->name) + 1; |
9ac3e487 | 716 | size = PERF_ALIGN(size, sizeof(u64)); |
9c90a61c ACM |
717 | event->mmap.header.type = PERF_RECORD_MMAP; |
718 | event->mmap.header.size = (sizeof(event->mmap) - | |
743eb868 | 719 | (sizeof(event->mmap.filename) - size) + machine->id_hdr_size); |
0ae617be | 720 | event->mmap.pgoff = kmap->ref_reloc_sym->addr; |
9c90a61c ACM |
721 | event->mmap.start = map->start; |
722 | event->mmap.len = map->end - event->mmap.start; | |
723 | event->mmap.pid = machine->pid; | |
724 | ||
3ea223ad | 725 | err = perf_tool__process_synth_event(tool, event, machine, process); |
9c90a61c ACM |
726 | free(event); |
727 | ||
728 | return err; | |
56b03f3c ACM |
729 | } |
730 | ||
99471c96 JO |
731 | int perf_event__synthesize_thread_map2(struct perf_tool *tool, |
732 | struct thread_map *threads, | |
733 | perf_event__handler_t process, | |
734 | struct machine *machine) | |
735 | { | |
736 | union perf_event *event; | |
737 | int i, err, size; | |
738 | ||
739 | size = sizeof(event->thread_map); | |
740 | size += threads->nr * sizeof(event->thread_map.entries[0]); | |
741 | ||
742 | event = zalloc(size); | |
743 | if (!event) | |
744 | return -ENOMEM; | |
745 | ||
746 | event->header.type = PERF_RECORD_THREAD_MAP; | |
747 | event->header.size = size; | |
748 | event->thread_map.nr = threads->nr; | |
749 | ||
750 | for (i = 0; i < threads->nr; i++) { | |
751 | struct thread_map_event_entry *entry = &event->thread_map.entries[i]; | |
752 | char *comm = thread_map__comm(threads, i); | |
753 | ||
754 | if (!comm) | |
755 | comm = (char *) ""; | |
756 | ||
757 | entry->pid = thread_map__pid(threads, i); | |
758 | strncpy((char *) &entry->comm, comm, sizeof(entry->comm)); | |
759 | } | |
760 | ||
761 | err = process(tool, event, NULL, machine); | |
762 | ||
763 | free(event); | |
764 | return err; | |
765 | } | |
766 | ||
6c872901 JO |
767 | static void synthesize_cpus(struct cpu_map_entries *cpus, |
768 | struct cpu_map *map) | |
769 | { | |
770 | int i; | |
771 | ||
772 | cpus->nr = map->nr; | |
773 | ||
774 | for (i = 0; i < map->nr; i++) | |
775 | cpus->cpu[i] = map->map[i]; | |
776 | } | |
777 | ||
778 | static void synthesize_mask(struct cpu_map_mask *mask, | |
779 | struct cpu_map *map, int max) | |
780 | { | |
781 | int i; | |
782 | ||
783 | mask->nr = BITS_TO_LONGS(max); | |
784 | mask->long_size = sizeof(long); | |
785 | ||
786 | for (i = 0; i < map->nr; i++) | |
787 | set_bit(map->map[i], mask->mask); | |
788 | } | |
789 | ||
790 | static size_t cpus_size(struct cpu_map *map) | |
791 | { | |
792 | return sizeof(struct cpu_map_entries) + map->nr * sizeof(u16); | |
793 | } | |
794 | ||
795 | static size_t mask_size(struct cpu_map *map, int *max) | |
796 | { | |
797 | int i; | |
798 | ||
799 | *max = 0; | |
800 | ||
801 | for (i = 0; i < map->nr; i++) { | |
802 | /* bit possition of the cpu is + 1 */ | |
803 | int bit = map->map[i] + 1; | |
804 | ||
805 | if (bit > *max) | |
806 | *max = bit; | |
807 | } | |
808 | ||
809 | return sizeof(struct cpu_map_mask) + BITS_TO_LONGS(*max) * sizeof(long); | |
810 | } | |
811 | ||
812 | void *cpu_map_data__alloc(struct cpu_map *map, size_t *size, u16 *type, int *max) | |
813 | { | |
814 | size_t size_cpus, size_mask; | |
815 | bool is_dummy = cpu_map__empty(map); | |
816 | ||
817 | /* | |
818 | * Both array and mask data have variable size based | |
819 | * on the number of cpus and their actual values. | |
820 | * The size of the 'struct cpu_map_data' is: | |
821 | * | |
822 | * array = size of 'struct cpu_map_entries' + | |
823 | * number of cpus * sizeof(u64) | |
824 | * | |
825 | * mask = size of 'struct cpu_map_mask' + | |
826 | * maximum cpu bit converted to size of longs | |
827 | * | |
828 | * and finaly + the size of 'struct cpu_map_data'. | |
829 | */ | |
830 | size_cpus = cpus_size(map); | |
831 | size_mask = mask_size(map, max); | |
832 | ||
833 | if (is_dummy || (size_cpus < size_mask)) { | |
834 | *size += size_cpus; | |
835 | *type = PERF_CPU_MAP__CPUS; | |
836 | } else { | |
837 | *size += size_mask; | |
838 | *type = PERF_CPU_MAP__MASK; | |
839 | } | |
840 | ||
841 | *size += sizeof(struct cpu_map_data); | |
842 | return zalloc(*size); | |
843 | } | |
844 | ||
845 | void cpu_map_data__synthesize(struct cpu_map_data *data, struct cpu_map *map, | |
846 | u16 type, int max) | |
847 | { | |
848 | data->type = type; | |
849 | ||
850 | switch (type) { | |
851 | case PERF_CPU_MAP__CPUS: | |
852 | synthesize_cpus((struct cpu_map_entries *) data->data, map); | |
853 | break; | |
854 | case PERF_CPU_MAP__MASK: | |
855 | synthesize_mask((struct cpu_map_mask *) data->data, map, max); | |
856 | default: | |
857 | break; | |
858 | }; | |
859 | } | |
860 | ||
861 | static struct cpu_map_event* cpu_map_event__new(struct cpu_map *map) | |
862 | { | |
863 | size_t size = sizeof(struct cpu_map_event); | |
864 | struct cpu_map_event *event; | |
865 | int max; | |
866 | u16 type; | |
867 | ||
868 | event = cpu_map_data__alloc(map, &size, &type, &max); | |
869 | if (!event) | |
870 | return NULL; | |
871 | ||
872 | event->header.type = PERF_RECORD_CPU_MAP; | |
873 | event->header.size = size; | |
874 | event->data.type = type; | |
875 | ||
876 | cpu_map_data__synthesize(&event->data, map, type, max); | |
877 | return event; | |
878 | } | |
879 | ||
880 | int perf_event__synthesize_cpu_map(struct perf_tool *tool, | |
881 | struct cpu_map *map, | |
882 | perf_event__handler_t process, | |
883 | struct machine *machine) | |
884 | { | |
885 | struct cpu_map_event *event; | |
886 | int err; | |
887 | ||
888 | event = cpu_map_event__new(map); | |
889 | if (!event) | |
890 | return -ENOMEM; | |
891 | ||
892 | err = process(tool, (union perf_event *) event, NULL, machine); | |
893 | ||
894 | free(event); | |
895 | return err; | |
896 | } | |
897 | ||
67424342 JO |
898 | int perf_event__synthesize_stat_config(struct perf_tool *tool, |
899 | struct perf_stat_config *config, | |
900 | perf_event__handler_t process, | |
901 | struct machine *machine) | |
902 | { | |
903 | struct stat_config_event *event; | |
904 | int size, i = 0, err; | |
905 | ||
906 | size = sizeof(*event); | |
907 | size += (PERF_STAT_CONFIG_TERM__MAX * sizeof(event->data[0])); | |
908 | ||
909 | event = zalloc(size); | |
910 | if (!event) | |
911 | return -ENOMEM; | |
912 | ||
913 | event->header.type = PERF_RECORD_STAT_CONFIG; | |
914 | event->header.size = size; | |
915 | event->nr = PERF_STAT_CONFIG_TERM__MAX; | |
916 | ||
917 | #define ADD(__term, __val) \ | |
918 | event->data[i].tag = PERF_STAT_CONFIG_TERM__##__term; \ | |
919 | event->data[i].val = __val; \ | |
920 | i++; | |
921 | ||
922 | ADD(AGGR_MODE, config->aggr_mode) | |
923 | ADD(INTERVAL, config->interval) | |
924 | ADD(SCALE, config->scale) | |
925 | ||
926 | WARN_ONCE(i != PERF_STAT_CONFIG_TERM__MAX, | |
927 | "stat config terms unbalanced\n"); | |
928 | #undef ADD | |
929 | ||
930 | err = process(tool, (union perf_event *) event, NULL, machine); | |
931 | ||
932 | free(event); | |
933 | return err; | |
934 | } | |
935 | ||
5796f8f0 JO |
936 | int perf_event__synthesize_stat(struct perf_tool *tool, |
937 | u32 cpu, u32 thread, u64 id, | |
938 | struct perf_counts_values *count, | |
939 | perf_event__handler_t process, | |
940 | struct machine *machine) | |
941 | { | |
942 | struct stat_event event; | |
943 | ||
944 | event.header.type = PERF_RECORD_STAT; | |
945 | event.header.size = sizeof(event); | |
946 | event.header.misc = 0; | |
947 | ||
948 | event.id = id; | |
949 | event.cpu = cpu; | |
950 | event.thread = thread; | |
951 | event.val = count->val; | |
952 | event.ena = count->ena; | |
953 | event.run = count->run; | |
954 | ||
955 | return process(tool, (union perf_event *) &event, NULL, machine); | |
956 | } | |
957 | ||
d4c22591 JO |
958 | int perf_event__synthesize_stat_round(struct perf_tool *tool, |
959 | u64 evtime, u64 type, | |
960 | perf_event__handler_t process, | |
961 | struct machine *machine) | |
962 | { | |
963 | struct stat_round_event event; | |
964 | ||
965 | event.header.type = PERF_RECORD_STAT_ROUND; | |
966 | event.header.size = sizeof(event); | |
967 | event.header.misc = 0; | |
968 | ||
969 | event.time = evtime; | |
970 | event.type = type; | |
971 | ||
972 | return process(tool, (union perf_event *) &event, NULL, machine); | |
973 | } | |
974 | ||
8e381596 JO |
975 | void perf_event__read_stat_config(struct perf_stat_config *config, |
976 | struct stat_config_event *event) | |
977 | { | |
978 | unsigned i; | |
979 | ||
980 | for (i = 0; i < event->nr; i++) { | |
981 | ||
982 | switch (event->data[i].tag) { | |
983 | #define CASE(__term, __val) \ | |
984 | case PERF_STAT_CONFIG_TERM__##__term: \ | |
985 | config->__val = event->data[i].val; \ | |
986 | break; | |
987 | ||
988 | CASE(AGGR_MODE, aggr_mode) | |
989 | CASE(SCALE, scale) | |
990 | CASE(INTERVAL, interval) | |
991 | #undef CASE | |
992 | default: | |
993 | pr_warning("unknown stat config term %" PRIu64 "\n", | |
994 | event->data[i].tag); | |
995 | } | |
996 | } | |
997 | } | |
998 | ||
482ad897 ACM |
999 | size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp) |
1000 | { | |
022c50d0 AH |
1001 | const char *s; |
1002 | ||
1003 | if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC) | |
1004 | s = " exec"; | |
1005 | else | |
1006 | s = ""; | |
1007 | ||
50674065 | 1008 | return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid); |
482ad897 ACM |
1009 | } |
1010 | ||
1d037ca1 | 1011 | int perf_event__process_comm(struct perf_tool *tool __maybe_unused, |
d20deb64 | 1012 | union perf_event *event, |
162f0bef | 1013 | struct perf_sample *sample, |
743eb868 | 1014 | struct machine *machine) |
62daacb5 | 1015 | { |
162f0bef | 1016 | return machine__process_comm_event(machine, event, sample); |
62daacb5 ACM |
1017 | } |
1018 | ||
1d037ca1 | 1019 | int perf_event__process_lost(struct perf_tool *tool __maybe_unused, |
d20deb64 | 1020 | union perf_event *event, |
162f0bef | 1021 | struct perf_sample *sample, |
b0a7d1a0 | 1022 | struct machine *machine) |
62daacb5 | 1023 | { |
162f0bef | 1024 | return machine__process_lost_event(machine, event, sample); |
a1645ce1 | 1025 | } |
b7cece76 | 1026 | |
4a96f7a0 AH |
1027 | int perf_event__process_aux(struct perf_tool *tool __maybe_unused, |
1028 | union perf_event *event, | |
1029 | struct perf_sample *sample __maybe_unused, | |
1030 | struct machine *machine) | |
1031 | { | |
1032 | return machine__process_aux_event(machine, event); | |
1033 | } | |
1034 | ||
0ad21f68 AH |
1035 | int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused, |
1036 | union perf_event *event, | |
1037 | struct perf_sample *sample __maybe_unused, | |
1038 | struct machine *machine) | |
1039 | { | |
1040 | return machine__process_itrace_start_event(machine, event); | |
1041 | } | |
1042 | ||
c4937a91 KL |
1043 | int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused, |
1044 | union perf_event *event, | |
1045 | struct perf_sample *sample, | |
1046 | struct machine *machine) | |
1047 | { | |
1048 | return machine__process_lost_samples_event(machine, event, sample); | |
1049 | } | |
1050 | ||
0286039f AH |
1051 | int perf_event__process_switch(struct perf_tool *tool __maybe_unused, |
1052 | union perf_event *event, | |
1053 | struct perf_sample *sample __maybe_unused, | |
1054 | struct machine *machine) | |
1055 | { | |
1056 | return machine__process_switch_event(machine, event); | |
1057 | } | |
1058 | ||
482ad897 ACM |
1059 | size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp) |
1060 | { | |
62605dc5 | 1061 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n", |
482ad897 | 1062 | event->mmap.pid, event->mmap.tid, event->mmap.start, |
62605dc5 ACM |
1063 | event->mmap.len, event->mmap.pgoff, |
1064 | (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x', | |
1065 | event->mmap.filename); | |
482ad897 ACM |
1066 | } |
1067 | ||
5c5e854b SE |
1068 | size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp) |
1069 | { | |
1070 | return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 | |
7ef80703 | 1071 | " %02x:%02x %"PRIu64" %"PRIu64"]: %c%c%c%c %s\n", |
5c5e854b SE |
1072 | event->mmap2.pid, event->mmap2.tid, event->mmap2.start, |
1073 | event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj, | |
1074 | event->mmap2.min, event->mmap2.ino, | |
1075 | event->mmap2.ino_generation, | |
7ef80703 DZ |
1076 | (event->mmap2.prot & PROT_READ) ? 'r' : '-', |
1077 | (event->mmap2.prot & PROT_WRITE) ? 'w' : '-', | |
1078 | (event->mmap2.prot & PROT_EXEC) ? 'x' : '-', | |
1079 | (event->mmap2.flags & MAP_SHARED) ? 's' : 'p', | |
5c5e854b SE |
1080 | event->mmap2.filename); |
1081 | } | |
1082 | ||
ec7fa596 JO |
1083 | size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp) |
1084 | { | |
1085 | struct thread_map *threads = thread_map__new_event(&event->thread_map); | |
1086 | size_t ret; | |
1087 | ||
1088 | ret = fprintf(fp, " nr: "); | |
1089 | ||
1090 | if (threads) | |
1091 | ret += thread_map__fprintf(threads, fp); | |
1092 | else | |
1093 | ret += fprintf(fp, "failed to get threads from event\n"); | |
1094 | ||
1095 | thread_map__put(threads); | |
1096 | return ret; | |
1097 | } | |
1098 | ||
eb12a1af JO |
1099 | size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp) |
1100 | { | |
1101 | struct cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data); | |
1102 | size_t ret; | |
1103 | ||
a24020e6 | 1104 | ret = fprintf(fp, ": "); |
eb12a1af JO |
1105 | |
1106 | if (cpus) | |
1107 | ret += cpu_map__fprintf(cpus, fp); | |
1108 | else | |
1109 | ret += fprintf(fp, "failed to get cpumap from event\n"); | |
1110 | ||
1111 | cpu_map__put(cpus); | |
1112 | return ret; | |
1113 | } | |
1114 | ||
b0a7d1a0 | 1115 | int perf_event__process_mmap(struct perf_tool *tool __maybe_unused, |
d20deb64 | 1116 | union perf_event *event, |
162f0bef | 1117 | struct perf_sample *sample, |
743eb868 | 1118 | struct machine *machine) |
a1645ce1 | 1119 | { |
162f0bef | 1120 | return machine__process_mmap_event(machine, event, sample); |
62daacb5 ACM |
1121 | } |
1122 | ||
5c5e854b SE |
1123 | int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused, |
1124 | union perf_event *event, | |
162f0bef | 1125 | struct perf_sample *sample, |
5c5e854b SE |
1126 | struct machine *machine) |
1127 | { | |
162f0bef | 1128 | return machine__process_mmap2_event(machine, event, sample); |
5c5e854b SE |
1129 | } |
1130 | ||
482ad897 ACM |
1131 | size_t perf_event__fprintf_task(union perf_event *event, FILE *fp) |
1132 | { | |
1133 | return fprintf(fp, "(%d:%d):(%d:%d)\n", | |
1134 | event->fork.pid, event->fork.tid, | |
1135 | event->fork.ppid, event->fork.ptid); | |
1136 | } | |
1137 | ||
f62d3f0f | 1138 | int perf_event__process_fork(struct perf_tool *tool __maybe_unused, |
d20deb64 | 1139 | union perf_event *event, |
162f0bef | 1140 | struct perf_sample *sample, |
f62d3f0f | 1141 | struct machine *machine) |
62daacb5 | 1142 | { |
162f0bef | 1143 | return machine__process_fork_event(machine, event, sample); |
62daacb5 | 1144 | } |
1ed091c4 | 1145 | |
f62d3f0f ACM |
1146 | int perf_event__process_exit(struct perf_tool *tool __maybe_unused, |
1147 | union perf_event *event, | |
162f0bef | 1148 | struct perf_sample *sample, |
f62d3f0f ACM |
1149 | struct machine *machine) |
1150 | { | |
162f0bef | 1151 | return machine__process_exit_event(machine, event, sample); |
f62d3f0f ACM |
1152 | } |
1153 | ||
4a96f7a0 AH |
1154 | size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp) |
1155 | { | |
1156 | return fprintf(fp, " offset: %#"PRIx64" size: %#"PRIx64" flags: %#"PRIx64" [%s%s]\n", | |
1157 | event->aux.aux_offset, event->aux.aux_size, | |
1158 | event->aux.flags, | |
1159 | event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "", | |
1160 | event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : ""); | |
1161 | } | |
1162 | ||
0ad21f68 AH |
1163 | size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp) |
1164 | { | |
1165 | return fprintf(fp, " pid: %u tid: %u\n", | |
1166 | event->itrace_start.pid, event->itrace_start.tid); | |
1167 | } | |
1168 | ||
0286039f AH |
1169 | size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp) |
1170 | { | |
1171 | bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT; | |
1172 | const char *in_out = out ? "OUT" : "IN "; | |
1173 | ||
1174 | if (event->header.type == PERF_RECORD_SWITCH) | |
1175 | return fprintf(fp, " %s\n", in_out); | |
1176 | ||
1177 | return fprintf(fp, " %s %s pid/tid: %5u/%-5u\n", | |
1178 | in_out, out ? "next" : "prev", | |
1179 | event->context_switch.next_prev_pid, | |
1180 | event->context_switch.next_prev_tid); | |
1181 | } | |
1182 | ||
482ad897 ACM |
1183 | size_t perf_event__fprintf(union perf_event *event, FILE *fp) |
1184 | { | |
1185 | size_t ret = fprintf(fp, "PERF_RECORD_%s", | |
1186 | perf_event__name(event->header.type)); | |
1187 | ||
1188 | switch (event->header.type) { | |
1189 | case PERF_RECORD_COMM: | |
1190 | ret += perf_event__fprintf_comm(event, fp); | |
1191 | break; | |
1192 | case PERF_RECORD_FORK: | |
1193 | case PERF_RECORD_EXIT: | |
1194 | ret += perf_event__fprintf_task(event, fp); | |
1195 | break; | |
1196 | case PERF_RECORD_MMAP: | |
1197 | ret += perf_event__fprintf_mmap(event, fp); | |
1198 | break; | |
5c5e854b SE |
1199 | case PERF_RECORD_MMAP2: |
1200 | ret += perf_event__fprintf_mmap2(event, fp); | |
1201 | break; | |
4a96f7a0 AH |
1202 | case PERF_RECORD_AUX: |
1203 | ret += perf_event__fprintf_aux(event, fp); | |
1204 | break; | |
0ad21f68 AH |
1205 | case PERF_RECORD_ITRACE_START: |
1206 | ret += perf_event__fprintf_itrace_start(event, fp); | |
1207 | break; | |
0286039f AH |
1208 | case PERF_RECORD_SWITCH: |
1209 | case PERF_RECORD_SWITCH_CPU_WIDE: | |
1210 | ret += perf_event__fprintf_switch(event, fp); | |
1211 | break; | |
482ad897 ACM |
1212 | default: |
1213 | ret += fprintf(fp, "\n"); | |
1214 | } | |
1215 | ||
1216 | return ret; | |
1217 | } | |
1218 | ||
b0a7d1a0 ACM |
1219 | int perf_event__process(struct perf_tool *tool __maybe_unused, |
1220 | union perf_event *event, | |
162f0bef | 1221 | struct perf_sample *sample, |
b0a7d1a0 | 1222 | struct machine *machine) |
b83f920e | 1223 | { |
162f0bef | 1224 | return machine__process_event(machine, event, sample); |
b83f920e SD |
1225 | } |
1226 | ||
bb871a9c | 1227 | void thread__find_addr_map(struct thread *thread, u8 cpumode, |
743eb868 | 1228 | enum map_type type, u64 addr, |
326f59bf | 1229 | struct addr_location *al) |
1ed091c4 | 1230 | { |
93d5731d | 1231 | struct map_groups *mg = thread->mg; |
bb871a9c | 1232 | struct machine *machine = mg->machine; |
5b7ba82a | 1233 | bool load_map = false; |
1ed091c4 | 1234 | |
cc22e575 | 1235 | al->machine = machine; |
316c7136 | 1236 | al->thread = thread; |
1ed091c4 | 1237 | al->addr = addr; |
a1645ce1 | 1238 | al->cpumode = cpumode; |
b3cef7f6 | 1239 | al->filtered = 0; |
1ed091c4 | 1240 | |
743eb868 ACM |
1241 | if (machine == NULL) { |
1242 | al->map = NULL; | |
1243 | return; | |
1244 | } | |
1245 | ||
a1645ce1 | 1246 | if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { |
1ed091c4 | 1247 | al->level = 'k'; |
23346f21 | 1248 | mg = &machine->kmaps; |
5b7ba82a | 1249 | load_map = true; |
a1645ce1 | 1250 | } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { |
1ed091c4 | 1251 | al->level = '.'; |
a1645ce1 ZY |
1252 | } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { |
1253 | al->level = 'g'; | |
23346f21 | 1254 | mg = &machine->kmaps; |
5b7ba82a | 1255 | load_map = true; |
fb50bb43 DY |
1256 | } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) { |
1257 | al->level = 'u'; | |
a1645ce1 | 1258 | } else { |
fb50bb43 | 1259 | al->level = 'H'; |
1ed091c4 | 1260 | al->map = NULL; |
a1645ce1 ZY |
1261 | |
1262 | if ((cpumode == PERF_RECORD_MISC_GUEST_USER || | |
1263 | cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && | |
1264 | !perf_guest) | |
b3cef7f6 | 1265 | al->filtered |= (1 << HIST_FILTER__GUEST); |
a1645ce1 ZY |
1266 | if ((cpumode == PERF_RECORD_MISC_USER || |
1267 | cpumode == PERF_RECORD_MISC_KERNEL) && | |
1268 | !perf_host) | |
b3cef7f6 | 1269 | al->filtered |= (1 << HIST_FILTER__HOST); |
a1645ce1 | 1270 | |
1ed091c4 ACM |
1271 | return; |
1272 | } | |
1273 | try_again: | |
9958e1f0 | 1274 | al->map = map_groups__find(mg, type, al->addr); |
1ed091c4 ACM |
1275 | if (al->map == NULL) { |
1276 | /* | |
1277 | * If this is outside of all known maps, and is a negative | |
1278 | * address, try to look it up in the kernel dso, as it might be | |
1279 | * a vsyscall or vdso (which executes in user-mode). | |
1280 | * | |
1281 | * XXX This is nasty, we should have a symbol list in the | |
1282 | * "[vdso]" dso, but for now lets use the old trick of looking | |
1283 | * in the whole kernel symbol list. | |
1284 | */ | |
fbe2af45 AH |
1285 | if (cpumode == PERF_RECORD_MISC_USER && machine && |
1286 | mg != &machine->kmaps && | |
1287 | machine__kernel_ip(machine, al->addr)) { | |
23346f21 | 1288 | mg = &machine->kmaps; |
1f2a7069 | 1289 | load_map = true; |
1ed091c4 ACM |
1290 | goto try_again; |
1291 | } | |
5b7ba82a AH |
1292 | } else { |
1293 | /* | |
1294 | * Kernel maps might be changed when loading symbols so loading | |
1295 | * must be done prior to using kernel maps. | |
1296 | */ | |
1297 | if (load_map) | |
be39db9f | 1298 | map__load(al->map); |
1ed091c4 | 1299 | al->addr = al->map->map_ip(al->map, al->addr); |
5b7ba82a | 1300 | } |
59ee68ec ACM |
1301 | } |
1302 | ||
bb871a9c | 1303 | void thread__find_addr_location(struct thread *thread, |
743eb868 | 1304 | u8 cpumode, enum map_type type, u64 addr, |
61710bde | 1305 | struct addr_location *al) |
59ee68ec | 1306 | { |
bb871a9c | 1307 | thread__find_addr_map(thread, cpumode, type, addr, al); |
59ee68ec | 1308 | if (al->map != NULL) |
be39db9f | 1309 | al->sym = map__find_symbol(al->map, al->addr); |
59ee68ec ACM |
1310 | else |
1311 | al->sym = NULL; | |
1ed091c4 ACM |
1312 | } |
1313 | ||
b91fc39f ACM |
1314 | /* |
1315 | * Callers need to drop the reference to al->thread, obtained in | |
1316 | * machine__findnew_thread() | |
1317 | */ | |
bb3eb566 ACM |
1318 | int machine__resolve(struct machine *machine, struct addr_location *al, |
1319 | struct perf_sample *sample) | |
1ed091c4 | 1320 | { |
ef89325f | 1321 | struct thread *thread = machine__findnew_thread(machine, sample->pid, |
13ce34df | 1322 | sample->tid); |
41a37e20 | 1323 | |
1ed091c4 ACM |
1324 | if (thread == NULL) |
1325 | return -1; | |
1326 | ||
b9c5143a | 1327 | dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid); |
1f626bc3 | 1328 | /* |
743eb868 | 1329 | * Have we already created the kernel maps for this machine? |
1f626bc3 ACM |
1330 | * |
1331 | * This should have happened earlier, when we processed the kernel MMAP | |
1332 | * events, but for older perf.data files there was no such thing, so do | |
1333 | * it now. | |
1334 | */ | |
473398a2 | 1335 | if (sample->cpumode == PERF_RECORD_MISC_KERNEL && |
a5e813c6 | 1336 | machine__kernel_map(machine) == NULL) |
743eb868 | 1337 | machine__create_kernel_maps(machine); |
1ed091c4 | 1338 | |
473398a2 | 1339 | thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, al); |
1ed091c4 ACM |
1340 | dump_printf(" ...... dso: %s\n", |
1341 | al->map ? al->map->dso->long_name : | |
1342 | al->level == 'H' ? "[hypervisor]" : "<not found>"); | |
466fa764 NK |
1343 | |
1344 | if (thread__is_filtered(thread)) | |
1345 | al->filtered |= (1 << HIST_FILTER__THREAD); | |
1346 | ||
96415e4d | 1347 | al->sym = NULL; |
8d50e5b4 | 1348 | al->cpu = sample->cpu; |
0c4c4deb KL |
1349 | al->socket = -1; |
1350 | ||
1351 | if (al->cpu >= 0) { | |
1352 | struct perf_env *env = machine->env; | |
1353 | ||
1354 | if (env && env->cpu) | |
1355 | al->socket = env->cpu[al->cpu].socket_id; | |
1356 | } | |
96415e4d ACM |
1357 | |
1358 | if (al->map) { | |
cb8f4e9a NK |
1359 | struct dso *dso = al->map->dso; |
1360 | ||
96415e4d | 1361 | if (symbol_conf.dso_list && |
cb8f4e9a NK |
1362 | (!dso || !(strlist__has_entry(symbol_conf.dso_list, |
1363 | dso->short_name) || | |
1364 | (dso->short_name != dso->long_name && | |
1365 | strlist__has_entry(symbol_conf.dso_list, | |
b3cef7f6 NK |
1366 | dso->long_name))))) { |
1367 | al->filtered |= (1 << HIST_FILTER__DSO); | |
b3cef7f6 | 1368 | } |
96415e4d | 1369 | |
be39db9f | 1370 | al->sym = map__find_symbol(al->map, al->addr); |
96415e4d | 1371 | } |
c410a338 | 1372 | |
1500b93b FT |
1373 | if (symbol_conf.sym_list && |
1374 | (!al->sym || !strlist__has_entry(symbol_conf.sym_list, | |
b3cef7f6 NK |
1375 | al->sym->name))) { |
1376 | al->filtered |= (1 << HIST_FILTER__SYMBOL); | |
b3cef7f6 | 1377 | } |
c410a338 | 1378 | |
c410a338 | 1379 | return 0; |
1ed091c4 | 1380 | } |
9b0d2d87 | 1381 | |
b91fc39f ACM |
1382 | /* |
1383 | * The preprocess_sample method will return with reference counts for the | |
1384 | * in it, when done using (and perhaps getting ref counts if needing to | |
1385 | * keep a pointer to one of those entries) it must be paired with | |
1386 | * addr_location__put(), so that the refcounts can be decremented. | |
1387 | */ | |
1388 | void addr_location__put(struct addr_location *al) | |
1389 | { | |
1390 | thread__zput(al->thread); | |
1391 | } | |
1392 | ||
9b0d2d87 AH |
1393 | bool is_bts_event(struct perf_event_attr *attr) |
1394 | { | |
1395 | return attr->type == PERF_TYPE_HARDWARE && | |
1396 | (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) && | |
1397 | attr->sample_period == 1; | |
1398 | } | |
1399 | ||
1400 | bool sample_addr_correlates_sym(struct perf_event_attr *attr) | |
1401 | { | |
1402 | if (attr->type == PERF_TYPE_SOFTWARE && | |
1403 | (attr->config == PERF_COUNT_SW_PAGE_FAULTS || | |
1404 | attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN || | |
1405 | attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)) | |
1406 | return true; | |
1407 | ||
1408 | if (is_bts_event(attr)) | |
1409 | return true; | |
1410 | ||
1411 | return false; | |
1412 | } | |
1413 | ||
c2740a87 ACM |
1414 | void thread__resolve(struct thread *thread, struct addr_location *al, |
1415 | struct perf_sample *sample) | |
9b0d2d87 | 1416 | { |
473398a2 | 1417 | thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->addr, al); |
9b0d2d87 | 1418 | if (!al->map) |
473398a2 | 1419 | thread__find_addr_map(thread, sample->cpumode, MAP__VARIABLE, |
9b0d2d87 AH |
1420 | sample->addr, al); |
1421 | ||
1422 | al->cpu = sample->cpu; | |
1423 | al->sym = NULL; | |
1424 | ||
1425 | if (al->map) | |
be39db9f | 1426 | al->sym = map__find_symbol(al->map, al->addr); |
9b0d2d87 | 1427 | } |