blob: 4af6b279e34a94881da3e838ff41f407aeb0cbfc [file] [log] [blame]
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -02001#include <linux/types.h>
Don Zickus7ef80702014-05-19 15:13:49 -04002#include <sys/mman.h>
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -02003#include "event.h"
4#include "debug.h"
Namhyung Kimb3cef7f2014-03-17 16:59:21 -03005#include "hist.h"
Arnaldo Carvalho de Melof62d3f02012-10-06 15:44:59 -03006#include "machine.h"
Arnaldo Carvalho de Meloc410a332009-12-15 20:04:41 -02007#include "sort.h"
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -02008#include "string.h"
Arnaldo Carvalho de Meloc410a332009-12-15 20:04:41 -02009#include "strlist.h"
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -020010#include "thread.h"
Arnaldo Carvalho de Melo7c940c12011-02-11 11:45:54 -020011#include "thread_map.h"
Arnaldo Carvalho de Meloc506c962013-12-11 09:15:00 -030012#include "symbol/kallsyms.h"
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -020013
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -020014static const char *perf_event__names[] = {
Frederic Weisbecker3cb6d152011-05-23 13:06:27 +020015 [0] = "TOTAL",
16 [PERF_RECORD_MMAP] = "MMAP",
Stephane Eranian5c5e8542013-08-21 12:10:25 +020017 [PERF_RECORD_MMAP2] = "MMAP2",
Frederic Weisbecker3cb6d152011-05-23 13:06:27 +020018 [PERF_RECORD_LOST] = "LOST",
19 [PERF_RECORD_COMM] = "COMM",
20 [PERF_RECORD_EXIT] = "EXIT",
21 [PERF_RECORD_THROTTLE] = "THROTTLE",
22 [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
23 [PERF_RECORD_FORK] = "FORK",
24 [PERF_RECORD_READ] = "READ",
25 [PERF_RECORD_SAMPLE] = "SAMPLE",
26 [PERF_RECORD_HEADER_ATTR] = "ATTR",
27 [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE",
28 [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA",
29 [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID",
30 [PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND",
Arnaldo Carvalho de Meloc8446b92010-05-14 10:36:42 -030031};
32
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -020033const char *perf_event__name(unsigned int id)
Thomas Gleixner3835bc002010-12-07 12:48:42 +000034{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -020035 if (id >= ARRAY_SIZE(perf_event__names))
Thomas Gleixner3835bc002010-12-07 12:48:42 +000036 return "INVALID";
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -020037 if (!perf_event__names[id])
Thomas Gleixner3835bc002010-12-07 12:48:42 +000038 return "UNKNOWN";
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -020039 return perf_event__names[id];
Thomas Gleixner3835bc002010-12-07 12:48:42 +000040}
41
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -020042static struct perf_sample synth_sample = {
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -020043 .pid = -1,
44 .tid = -1,
45 .time = -1,
46 .stream_id = -1,
47 .cpu = -1,
48 .period = 1,
49};
50
David Ahernf5faf722011-12-22 11:30:02 -070051static pid_t perf_event__get_comm_tgid(pid_t pid, char *comm, size_t len)
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -020052{
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -020053 char filename[PATH_MAX];
54 char bf[BUFSIZ];
55 FILE *fp;
56 size_t size = 0;
David Ahernf5faf722011-12-22 11:30:02 -070057 pid_t tgid = -1;
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -020058
59 snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
60
61 fp = fopen(filename, "r");
62 if (fp == NULL) {
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -020063 pr_debug("couldn't open %s\n", filename);
64 return 0;
65 }
66
David Ahernf5faf722011-12-22 11:30:02 -070067 while (!comm[0] || (tgid < 0)) {
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -020068 if (fgets(bf, sizeof(bf), fp) == NULL) {
David Ahernf5faf722011-12-22 11:30:02 -070069 pr_warning("couldn't get COMM and pgid, malformed %s\n",
70 filename);
71 break;
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -020072 }
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -020073
74 if (memcmp(bf, "Name:", 5) == 0) {
75 char *name = bf + 5;
76 while (*name && isspace(*name))
77 ++name;
78 size = strlen(name) - 1;
David Ahernf5faf722011-12-22 11:30:02 -070079 if (size >= len)
80 size = len - 1;
81 memcpy(comm, name, size);
David Aherncfbd70c2012-02-24 12:31:38 -070082 comm[size] = '\0';
David Ahernf5faf722011-12-22 11:30:02 -070083
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -020084 } else if (memcmp(bf, "Tgid:", 5) == 0) {
85 char *tgids = bf + 5;
86 while (*tgids && isspace(*tgids))
87 ++tgids;
David Ahernf5faf722011-12-22 11:30:02 -070088 tgid = atoi(tgids);
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -020089 }
90 }
91
David Ahernf5faf722011-12-22 11:30:02 -070092 fclose(fp);
93
94 return tgid;
95}
96
97static pid_t perf_event__synthesize_comm(struct perf_tool *tool,
98 union perf_event *event, pid_t pid,
David Ahernf5faf722011-12-22 11:30:02 -070099 perf_event__handler_t process,
100 struct machine *machine)
101{
David Ahernf5faf722011-12-22 11:30:02 -0700102 size_t size;
David Ahernf5faf722011-12-22 11:30:02 -0700103 pid_t tgid;
104
105 memset(&event->comm, 0, sizeof(event->comm));
106
Dongsheng Yangf5db57c42013-12-20 15:52:59 -0500107 if (machine__is_host(machine))
108 tgid = perf_event__get_comm_tgid(pid, event->comm.comm,
109 sizeof(event->comm.comm));
110 else
111 tgid = machine->pid;
112
David Ahernf5faf722011-12-22 11:30:02 -0700113 if (tgid < 0)
114 goto out;
115
116 event->comm.pid = tgid;
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200117 event->comm.header.type = PERF_RECORD_COMM;
David Ahernf5faf722011-12-22 11:30:02 -0700118
119 size = strlen(event->comm.comm) + 1;
Irina Tirdea9ac3e482012-09-11 01:15:01 +0300120 size = PERF_ALIGN(size, sizeof(u64));
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200121 memset(event->comm.comm + size, 0, machine->id_hdr_size);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200122 event->comm.header.size = (sizeof(event->comm) -
123 (sizeof(event->comm.comm) - size) +
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200124 machine->id_hdr_size);
Don Zickusbfd66cc2014-02-26 10:45:26 -0500125 event->comm.tid = pid;
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200126
Don Zickusbfd66cc2014-02-26 10:45:26 -0500127 if (process(tool, event, &synth_sample, machine) != 0)
128 return -1;
David Ahern1e6d5322012-08-26 12:24:42 -0600129
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200130out:
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200131 return tgid;
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200132}
133
Don Zickus363b7852014-03-14 10:43:44 -0400134static int perf_event__synthesize_fork(struct perf_tool *tool,
135 union perf_event *event, pid_t pid,
136 pid_t tgid, perf_event__handler_t process,
137 struct machine *machine)
138{
139 memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size);
140
141 /* this is really a clone event but we use fork to synthesize it */
142 event->fork.ppid = tgid;
143 event->fork.ptid = tgid;
144 event->fork.pid = tgid;
145 event->fork.tid = pid;
146 event->fork.header.type = PERF_RECORD_FORK;
147
148 event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size);
149
150 if (process(tool, event, &synth_sample, machine) != 0)
151 return -1;
152
153 return 0;
154}
155
Jiri Olsaa18382b2014-01-07 13:47:20 +0100156int perf_event__synthesize_mmap_events(struct perf_tool *tool,
157 union perf_event *event,
158 pid_t pid, pid_t tgid,
159 perf_event__handler_t process,
160 struct machine *machine,
161 bool mmap_data)
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200162{
163 char filename[PATH_MAX];
164 FILE *fp;
David Ahern1e6d5322012-08-26 12:24:42 -0600165 int rc = 0;
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200166
Dongsheng Yangc239c25a2013-12-20 15:53:00 -0500167 if (machine__is_default_guest(machine))
168 return 0;
169
Dongsheng Yang99563462013-12-20 15:52:57 -0500170 snprintf(filename, sizeof(filename), "%s/proc/%d/maps",
171 machine->root_dir, pid);
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200172
173 fp = fopen(filename, "r");
174 if (fp == NULL) {
175 /*
176 * We raced with a task exiting - just return:
177 */
178 pr_debug("couldn't open %s\n", filename);
179 return -1;
180 }
181
Don Zickusa5a5ba72014-05-30 10:49:42 -0400182 event->header.type = PERF_RECORD_MMAP2;
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200183
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200184 while (1) {
Namhyung Kim60648032012-11-11 23:20:50 +0900185 char bf[BUFSIZ];
186 char prot[5];
187 char execname[PATH_MAX];
188 char anonstr[] = "//anon";
Don Zickusa5a5ba72014-05-30 10:49:42 -0400189 unsigned int ino;
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200190 size_t size;
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200191 ssize_t n;
Namhyung Kim60648032012-11-11 23:20:50 +0900192
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200193 if (fgets(bf, sizeof(bf), fp) == NULL)
194 break;
195
Namhyung Kim60648032012-11-11 23:20:50 +0900196 /* ensure null termination since stack will be reused. */
197 strcpy(execname, "");
198
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200199 /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
Don Zickusa5a5ba72014-05-30 10:49:42 -0400200 n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %s\n",
201 &event->mmap2.start, &event->mmap2.len, prot,
202 &event->mmap2.pgoff, &event->mmap2.maj,
203 &event->mmap2.min,
204 &ino, execname);
205
Don Zickus9d4ecc82013-11-13 15:32:06 -0300206 /*
207 * Anon maps don't have the execname.
208 */
Don Zickusa5a5ba72014-05-30 10:49:42 -0400209 if (n < 7)
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200210 continue;
Don Zickusa5a5ba72014-05-30 10:49:42 -0400211
212 event->mmap2.ino = (u64)ino;
213
Arnaldo Carvalho de Melo62605dc502013-11-11 09:44:09 -0300214 /*
215 * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
216 */
Dongsheng Yang73547aa2013-12-20 15:52:58 -0500217 if (machine__is_host(machine))
218 event->header.misc = PERF_RECORD_MISC_USER;
219 else
220 event->header.misc = PERF_RECORD_MISC_GUEST_USER;
Namhyung Kim60648032012-11-11 23:20:50 +0900221
Don Zickus7ef80702014-05-19 15:13:49 -0400222 /* map protection and flags bits */
223 event->mmap2.prot = 0;
224 event->mmap2.flags = 0;
225 if (prot[0] == 'r')
226 event->mmap2.prot |= PROT_READ;
227 if (prot[1] == 'w')
228 event->mmap2.prot |= PROT_WRITE;
229 if (prot[2] == 'x')
230 event->mmap2.prot |= PROT_EXEC;
231
232 if (prot[3] == 's')
233 event->mmap2.flags |= MAP_SHARED;
234 else
235 event->mmap2.flags |= MAP_PRIVATE;
236
Arnaldo Carvalho de Melo62605dc502013-11-11 09:44:09 -0300237 if (prot[2] != 'x') {
238 if (!mmap_data || prot[0] != 'r')
239 continue;
240
241 event->header.misc |= PERF_RECORD_MISC_MMAP_DATA;
242 }
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200243
Namhyung Kim60648032012-11-11 23:20:50 +0900244 if (!strcmp(execname, ""))
245 strcpy(execname, anonstr);
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200246
Namhyung Kim60648032012-11-11 23:20:50 +0900247 size = strlen(execname) + 1;
Don Zickusa5a5ba72014-05-30 10:49:42 -0400248 memcpy(event->mmap2.filename, execname, size);
Namhyung Kim60648032012-11-11 23:20:50 +0900249 size = PERF_ALIGN(size, sizeof(u64));
Don Zickusa5a5ba72014-05-30 10:49:42 -0400250 event->mmap2.len -= event->mmap.start;
251 event->mmap2.header.size = (sizeof(event->mmap2) -
252 (sizeof(event->mmap2.filename) - size));
253 memset(event->mmap2.filename + size, 0, machine->id_hdr_size);
254 event->mmap2.header.size += machine->id_hdr_size;
255 event->mmap2.pid = tgid;
256 event->mmap2.tid = pid;
Anton Blanchard6a0e55d2011-08-30 09:15:06 +1000257
Namhyung Kim60648032012-11-11 23:20:50 +0900258 if (process(tool, event, &synth_sample, machine) != 0) {
259 rc = -1;
260 break;
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200261 }
262 }
263
264 fclose(fp);
David Ahern1e6d5322012-08-26 12:24:42 -0600265 return rc;
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200266}
267
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200268int perf_event__synthesize_modules(struct perf_tool *tool,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200269 perf_event__handler_t process,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200270 struct machine *machine)
Arnaldo Carvalho de Melob7cece762010-01-13 13:22:17 -0200271{
David Ahern1e6d5322012-08-26 12:24:42 -0600272 int rc = 0;
Arnaldo Carvalho de Melob7cece762010-01-13 13:22:17 -0200273 struct rb_node *nd;
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300274 struct map_groups *kmaps = &machine->kmaps;
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200275 union perf_event *event = zalloc((sizeof(event->mmap) +
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200276 machine->id_hdr_size));
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200277 if (event == NULL) {
278 pr_debug("Not enough memory synthesizing mmap event "
279 "for kernel modules\n");
280 return -1;
281 }
282
283 event->header.type = PERF_RECORD_MMAP;
Arnaldo Carvalho de Melob7cece762010-01-13 13:22:17 -0200284
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800285 /*
286 * kernel uses 0 for user space maps, see kernel/perf_event.c
287 * __perf_event_mmap
288 */
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300289 if (machine__is_host(machine))
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200290 event->header.misc = PERF_RECORD_MISC_KERNEL;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800291 else
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200292 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800293
294 for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]);
Arnaldo Carvalho de Melob7cece762010-01-13 13:22:17 -0200295 nd; nd = rb_next(nd)) {
Arnaldo Carvalho de Melob7cece762010-01-13 13:22:17 -0200296 size_t size;
297 struct map *pos = rb_entry(nd, struct map, rb_node);
298
299 if (pos->dso->kernel)
300 continue;
301
Irina Tirdea9ac3e482012-09-11 01:15:01 +0300302 size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200303 event->mmap.header.type = PERF_RECORD_MMAP;
304 event->mmap.header.size = (sizeof(event->mmap) -
305 (sizeof(event->mmap.filename) - size));
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200306 memset(event->mmap.filename + size, 0, machine->id_hdr_size);
307 event->mmap.header.size += machine->id_hdr_size;
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200308 event->mmap.start = pos->start;
309 event->mmap.len = pos->end - pos->start;
310 event->mmap.pid = machine->pid;
Arnaldo Carvalho de Melob7cece762010-01-13 13:22:17 -0200311
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200312 memcpy(event->mmap.filename, pos->dso->long_name,
Arnaldo Carvalho de Melob7cece762010-01-13 13:22:17 -0200313 pos->dso->long_name_len + 1);
David Ahern1e6d5322012-08-26 12:24:42 -0600314 if (process(tool, event, &synth_sample, machine) != 0) {
315 rc = -1;
316 break;
317 }
Arnaldo Carvalho de Melob7cece762010-01-13 13:22:17 -0200318 }
319
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200320 free(event);
David Ahern1e6d5322012-08-26 12:24:42 -0600321 return rc;
Arnaldo Carvalho de Melob7cece762010-01-13 13:22:17 -0200322}
323
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200324static int __event__synthesize_thread(union perf_event *comm_event,
325 union perf_event *mmap_event,
Don Zickus363b7852014-03-14 10:43:44 -0400326 union perf_event *fork_event,
David Aherndefd8d32011-12-22 11:30:01 -0700327 pid_t pid, int full,
328 perf_event__handler_t process,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200329 struct perf_tool *tool,
Arnaldo Carvalho de Melo62605dc502013-11-11 09:44:09 -0300330 struct machine *machine, bool mmap_data)
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200331{
Don Zickusbfd66cc2014-02-26 10:45:26 -0500332 char filename[PATH_MAX];
333 DIR *tasks;
334 struct dirent dirent, *next;
335 pid_t tgid;
336
337 /* special case: only send one comm event using passed in pid */
338 if (!full) {
339 tgid = perf_event__synthesize_comm(tool, comm_event, pid,
340 process, machine);
341
342 if (tgid == -1)
343 return -1;
344
345 return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
346 process, machine, mmap_data);
347 }
348
349 if (machine__is_default_guest(machine))
350 return 0;
351
352 snprintf(filename, sizeof(filename), "%s/proc/%d/task",
353 machine->root_dir, pid);
354
355 tasks = opendir(filename);
356 if (tasks == NULL) {
357 pr_debug("couldn't open %s\n", filename);
358 return 0;
359 }
360
361 while (!readdir_r(tasks, &dirent, &next) && next) {
362 char *end;
363 int rc = 0;
364 pid_t _pid;
365
366 _pid = strtol(dirent.d_name, &end, 10);
367 if (*end)
368 continue;
369
370 tgid = perf_event__synthesize_comm(tool, comm_event, _pid,
371 process, machine);
372 if (tgid == -1)
373 return -1;
374
Don Zickus363b7852014-03-14 10:43:44 -0400375 if (_pid == pid) {
376 /* process the parent's maps too */
377 rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
378 process, machine, mmap_data);
379 } else {
380 /* only fork the tid's map, to save time */
381 rc = perf_event__synthesize_fork(tool, fork_event, _pid, tgid,
382 process, machine);
383 }
Don Zickusbfd66cc2014-02-26 10:45:26 -0500384
385 if (rc)
386 return rc;
387 }
388
389 closedir(tasks);
390 return 0;
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200391}
392
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200393int perf_event__synthesize_thread_map(struct perf_tool *tool,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200394 struct thread_map *threads,
Arnaldo Carvalho de Melo7c940c12011-02-11 11:45:54 -0200395 perf_event__handler_t process,
Arnaldo Carvalho de Melo62605dc502013-11-11 09:44:09 -0300396 struct machine *machine,
397 bool mmap_data)
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200398{
Don Zickus363b7852014-03-14 10:43:44 -0400399 union perf_event *comm_event, *mmap_event, *fork_event;
David Aherndefd8d32011-12-22 11:30:01 -0700400 int err = -1, thread, j;
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200401
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200402 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200403 if (comm_event == NULL)
404 goto out;
405
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200406 mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200407 if (mmap_event == NULL)
408 goto out_free_comm;
409
Don Zickus363b7852014-03-14 10:43:44 -0400410 fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
411 if (fork_event == NULL)
412 goto out_free_mmap;
413
Arnaldo Carvalho de Melo401b8e12011-02-10 12:52:47 -0200414 err = 0;
415 for (thread = 0; thread < threads->nr; ++thread) {
416 if (__event__synthesize_thread(comm_event, mmap_event,
Don Zickus363b7852014-03-14 10:43:44 -0400417 fork_event,
David Aherndefd8d32011-12-22 11:30:01 -0700418 threads->map[thread], 0,
Arnaldo Carvalho de Melo62605dc502013-11-11 09:44:09 -0300419 process, tool, machine,
420 mmap_data)) {
Arnaldo Carvalho de Melo401b8e12011-02-10 12:52:47 -0200421 err = -1;
422 break;
423 }
David Aherndefd8d32011-12-22 11:30:01 -0700424
425 /*
426 * comm.pid is set to thread group id by
427 * perf_event__synthesize_comm
428 */
429 if ((int) comm_event->comm.pid != threads->map[thread]) {
430 bool need_leader = true;
431
432 /* is thread group leader in thread_map? */
433 for (j = 0; j < threads->nr; ++j) {
434 if ((int) comm_event->comm.pid == threads->map[j]) {
435 need_leader = false;
436 break;
437 }
438 }
439
440 /* if not, generate events for it */
441 if (need_leader &&
Arnaldo Carvalho de Melo62605dc502013-11-11 09:44:09 -0300442 __event__synthesize_thread(comm_event, mmap_event,
Don Zickus363b7852014-03-14 10:43:44 -0400443 fork_event,
Arnaldo Carvalho de Melo62605dc502013-11-11 09:44:09 -0300444 comm_event->comm.pid, 0,
445 process, tool, machine,
446 mmap_data)) {
David Aherndefd8d32011-12-22 11:30:01 -0700447 err = -1;
448 break;
449 }
450 }
Arnaldo Carvalho de Melo401b8e12011-02-10 12:52:47 -0200451 }
Don Zickus363b7852014-03-14 10:43:44 -0400452 free(fork_event);
453out_free_mmap:
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200454 free(mmap_event);
455out_free_comm:
456 free(comm_event);
457out:
458 return err;
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200459}
460
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200461int perf_event__synthesize_threads(struct perf_tool *tool,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200462 perf_event__handler_t process,
Arnaldo Carvalho de Melo62605dc502013-11-11 09:44:09 -0300463 struct machine *machine, bool mmap_data)
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200464{
465 DIR *proc;
Dongsheng Yang99563462013-12-20 15:52:57 -0500466 char proc_path[PATH_MAX];
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200467 struct dirent dirent, *next;
Don Zickus363b7852014-03-14 10:43:44 -0400468 union perf_event *comm_event, *mmap_event, *fork_event;
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200469 int err = -1;
470
Namhyung Kim574799b2014-03-17 10:45:49 +0900471 if (machine__is_default_guest(machine))
472 return 0;
473
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200474 comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200475 if (comm_event == NULL)
476 goto out;
477
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200478 mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200479 if (mmap_event == NULL)
480 goto out_free_comm;
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200481
Don Zickus363b7852014-03-14 10:43:44 -0400482 fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
483 if (fork_event == NULL)
484 goto out_free_mmap;
485
Dongsheng Yang99563462013-12-20 15:52:57 -0500486 snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);
487 proc = opendir(proc_path);
488
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200489 if (proc == NULL)
Don Zickus363b7852014-03-14 10:43:44 -0400490 goto out_free_fork;
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200491
492 while (!readdir_r(proc, &dirent, &next) && next) {
493 char *end;
494 pid_t pid = strtol(dirent.d_name, &end, 10);
495
496 if (*end) /* only interested in proper numerical dirents */
497 continue;
Arnaldo Carvalho de Meloba361c92012-10-17 18:50:13 -0300498 /*
499 * We may race with exiting thread, so don't stop just because
500 * one thread couldn't be synthesized.
501 */
Don Zickus363b7852014-03-14 10:43:44 -0400502 __event__synthesize_thread(comm_event, mmap_event, fork_event, pid,
503 1, process, tool, machine, mmap_data);
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200504 }
505
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200506 err = 0;
David Ahern1e6d5322012-08-26 12:24:42 -0600507 closedir(proc);
Don Zickus363b7852014-03-14 10:43:44 -0400508out_free_fork:
509 free(fork_event);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200510out_free_mmap:
511 free(mmap_event);
512out_free_comm:
513 free(comm_event);
514out:
515 return err;
Arnaldo Carvalho de Melo234fbbf2009-10-26 19:23:18 -0200516}
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -0200517
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -0200518struct process_symbol_args {
519 const char *name;
520 u64 start;
521};
522
Arnaldo Carvalho de Melo3b01a412010-12-22 01:08:36 -0200523static int find_symbol_cb(void *arg, const char *name, char type,
Cody P Schafer82151522012-08-10 15:22:48 -0700524 u64 start)
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -0200525{
526 struct process_symbol_args *args = arg;
527
Arnaldo Carvalho de Melo881516e2010-01-15 18:08:27 -0200528 /*
529 * Must be a function or at least an alias, as in PARISC64, where "_text" is
530 * an 'A' to the same address as "_stext".
531 */
532 if (!(symbol_type__is_a(type, MAP__FUNCTION) ||
533 type == 'A') || strcmp(name, args->name))
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -0200534 return 0;
535
536 args->start = start;
537 return 1;
538}
539
Adrian Hunter29b596b2014-01-29 16:14:37 +0200540u64 kallsyms__get_function_start(const char *kallsyms_filename,
541 const char *symbol_name)
542{
543 struct process_symbol_args args = { .name = symbol_name, };
544
545 if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0)
546 return 0;
547
548 return args.start;
549}
550
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200551int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200552 perf_event__handler_t process,
Adrian Hunter0ae617b2014-01-29 16:14:40 +0200553 struct machine *machine)
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -0200554{
555 size_t size;
Adrian Hunter0ae617b2014-01-29 16:14:40 +0200556 const char *mmap_name;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800557 char name_buff[PATH_MAX];
558 struct map *map;
Adrian Hunter0ae617b2014-01-29 16:14:40 +0200559 struct kmap *kmap;
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200560 int err;
Andi Kleena5c2a4c2014-09-24 14:39:54 -0700561 union perf_event *event;
562
563 if (machine->vmlinux_maps[0] == NULL)
564 return -1;
565
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -0200566 /*
567 * We should get this from /sys/kernel/sections/.text, but till that is
568 * available use this, and after it is use this as a fallback for older
569 * kernels.
570 */
Andi Kleena5c2a4c2014-09-24 14:39:54 -0700571 event = zalloc((sizeof(event->mmap) + machine->id_hdr_size));
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200572 if (event == NULL) {
573 pr_debug("Not enough memory synthesizing mmap event "
574 "for kernel modules\n");
575 return -1;
576 }
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -0200577
Arnaldo Carvalho de Melo48ea8f52010-04-27 21:19:05 -0300578 mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff));
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300579 if (machine__is_host(machine)) {
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800580 /*
581 * kernel uses PERF_RECORD_MISC_USER for user space maps,
582 * see kernel/perf_event.c __perf_event_mmap
583 */
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200584 event->header.misc = PERF_RECORD_MISC_KERNEL;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800585 } else {
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200586 event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
Thomas Jarosch0b9e01a2013-01-25 11:20:47 +0100587 }
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -0200588
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300589 map = machine->vmlinux_maps[MAP__FUNCTION];
Adrian Hunter0ae617b2014-01-29 16:14:40 +0200590 kmap = map__kmap(map);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200591 size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
Adrian Hunter0ae617b2014-01-29 16:14:40 +0200592 "%s%s", mmap_name, kmap->ref_reloc_sym->name) + 1;
Irina Tirdea9ac3e482012-09-11 01:15:01 +0300593 size = PERF_ALIGN(size, sizeof(u64));
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200594 event->mmap.header.type = PERF_RECORD_MMAP;
595 event->mmap.header.size = (sizeof(event->mmap) -
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200596 (sizeof(event->mmap.filename) - size) + machine->id_hdr_size);
Adrian Hunter0ae617b2014-01-29 16:14:40 +0200597 event->mmap.pgoff = kmap->ref_reloc_sym->addr;
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200598 event->mmap.start = map->start;
599 event->mmap.len = map->end - event->mmap.start;
600 event->mmap.pid = machine->pid;
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -0200601
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200602 err = process(tool, event, &synth_sample, machine);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200603 free(event);
604
605 return err;
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -0200606}
607
Arnaldo Carvalho de Melo482ad892011-12-02 11:06:37 -0200608size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
609{
Adrian Hunter022c50d2014-07-14 13:02:27 +0300610 const char *s;
611
612 if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC)
613 s = " exec";
614 else
615 s = "";
616
617 return fprintf(fp, "%s: %s:%d\n", s, event->comm.comm, event->comm.tid);
Arnaldo Carvalho de Melo482ad892011-12-02 11:06:37 -0200618}
619
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300620int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200621 union perf_event *event,
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200622 struct perf_sample *sample,
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200623 struct machine *machine)
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -0200624{
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200625 return machine__process_comm_event(machine, event, sample);
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -0200626}
627
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300628int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200629 union perf_event *event,
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200630 struct perf_sample *sample,
Arnaldo Carvalho de Melob0a7d1a2012-10-06 16:26:02 -0300631 struct machine *machine)
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -0200632{
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200633 return machine__process_lost_event(machine, event, sample);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800634}
635
Arnaldo Carvalho de Melo482ad892011-12-02 11:06:37 -0200636size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
637{
Arnaldo Carvalho de Melo62605dc502013-11-11 09:44:09 -0300638 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n",
Arnaldo Carvalho de Melo482ad892011-12-02 11:06:37 -0200639 event->mmap.pid, event->mmap.tid, event->mmap.start,
Arnaldo Carvalho de Melo62605dc502013-11-11 09:44:09 -0300640 event->mmap.len, event->mmap.pgoff,
641 (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
642 event->mmap.filename);
Arnaldo Carvalho de Melo482ad892011-12-02 11:06:37 -0200643}
644
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200645size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
646{
647 return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64
Don Zickus7ef80702014-05-19 15:13:49 -0400648 " %02x:%02x %"PRIu64" %"PRIu64"]: %c%c%c%c %s\n",
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200649 event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
650 event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
651 event->mmap2.min, event->mmap2.ino,
652 event->mmap2.ino_generation,
Don Zickus7ef80702014-05-19 15:13:49 -0400653 (event->mmap2.prot & PROT_READ) ? 'r' : '-',
654 (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
655 (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
656 (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200657 event->mmap2.filename);
658}
659
Arnaldo Carvalho de Melob0a7d1a2012-10-06 16:26:02 -0300660int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200661 union perf_event *event,
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200662 struct perf_sample *sample,
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200663 struct machine *machine)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800664{
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200665 return machine__process_mmap_event(machine, event, sample);
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -0200666}
667
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200668int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
669 union perf_event *event,
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200670 struct perf_sample *sample,
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200671 struct machine *machine)
672{
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200673 return machine__process_mmap2_event(machine, event, sample);
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200674}
675
Arnaldo Carvalho de Melo482ad892011-12-02 11:06:37 -0200676size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
677{
678 return fprintf(fp, "(%d:%d):(%d:%d)\n",
679 event->fork.pid, event->fork.tid,
680 event->fork.ppid, event->fork.ptid);
681}
682
Arnaldo Carvalho de Melof62d3f02012-10-06 15:44:59 -0300683int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200684 union perf_event *event,
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200685 struct perf_sample *sample,
Arnaldo Carvalho de Melof62d3f02012-10-06 15:44:59 -0300686 struct machine *machine)
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -0200687{
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200688 return machine__process_fork_event(machine, event, sample);
Arnaldo Carvalho de Melo62daacb2009-11-27 16:29:22 -0200689}
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200690
Arnaldo Carvalho de Melof62d3f02012-10-06 15:44:59 -0300691int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
692 union perf_event *event,
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200693 struct perf_sample *sample,
Arnaldo Carvalho de Melof62d3f02012-10-06 15:44:59 -0300694 struct machine *machine)
695{
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200696 return machine__process_exit_event(machine, event, sample);
Arnaldo Carvalho de Melof62d3f02012-10-06 15:44:59 -0300697}
698
Arnaldo Carvalho de Melo482ad892011-12-02 11:06:37 -0200699size_t perf_event__fprintf(union perf_event *event, FILE *fp)
700{
701 size_t ret = fprintf(fp, "PERF_RECORD_%s",
702 perf_event__name(event->header.type));
703
704 switch (event->header.type) {
705 case PERF_RECORD_COMM:
706 ret += perf_event__fprintf_comm(event, fp);
707 break;
708 case PERF_RECORD_FORK:
709 case PERF_RECORD_EXIT:
710 ret += perf_event__fprintf_task(event, fp);
711 break;
712 case PERF_RECORD_MMAP:
713 ret += perf_event__fprintf_mmap(event, fp);
714 break;
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200715 case PERF_RECORD_MMAP2:
716 ret += perf_event__fprintf_mmap2(event, fp);
717 break;
Arnaldo Carvalho de Melo482ad892011-12-02 11:06:37 -0200718 default:
719 ret += fprintf(fp, "\n");
720 }
721
722 return ret;
723}
724
Arnaldo Carvalho de Melob0a7d1a2012-10-06 16:26:02 -0300725int perf_event__process(struct perf_tool *tool __maybe_unused,
726 union perf_event *event,
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200727 struct perf_sample *sample,
Arnaldo Carvalho de Melob0a7d1a2012-10-06 16:26:02 -0300728 struct machine *machine)
Srikar Dronamrajub83f920e2010-08-02 18:08:51 +0530729{
Frederic Weisbecker162f0be2013-09-11 16:18:24 +0200730 return machine__process_event(machine, event, sample);
Srikar Dronamrajub83f920e2010-08-02 18:08:51 +0530731}
732
Arnaldo Carvalho de Melo316c7132013-11-05 15:32:36 -0300733void thread__find_addr_map(struct thread *thread,
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200734 struct machine *machine, u8 cpumode,
735 enum map_type type, u64 addr,
Adrian Hunter326f59b2013-08-08 14:32:27 +0300736 struct addr_location *al)
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200737{
Arnaldo Carvalho de Melo93d57312014-03-21 17:57:01 -0300738 struct map_groups *mg = thread->mg;
Adrian Hunter5b7ba822013-08-07 14:38:46 +0300739 bool load_map = false;
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200740
Arnaldo Carvalho de Melocc22e572013-12-19 17:20:06 -0300741 al->machine = machine;
Arnaldo Carvalho de Melo316c7132013-11-05 15:32:36 -0300742 al->thread = thread;
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200743 al->addr = addr;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800744 al->cpumode = cpumode;
Namhyung Kimb3cef7f2014-03-17 16:59:21 -0300745 al->filtered = 0;
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200746
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200747 if (machine == NULL) {
748 al->map = NULL;
749 return;
750 }
751
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800752 if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200753 al->level = 'k';
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300754 mg = &machine->kmaps;
Adrian Hunter5b7ba822013-08-07 14:38:46 +0300755 load_map = true;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800756 } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200757 al->level = '.';
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800758 } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
759 al->level = 'g';
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300760 mg = &machine->kmaps;
Adrian Hunter5b7ba822013-08-07 14:38:46 +0300761 load_map = true;
Dongsheng Yangfb50bb42013-12-20 15:52:56 -0500762 } else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
763 al->level = 'u';
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800764 } else {
Dongsheng Yangfb50bb42013-12-20 15:52:56 -0500765 al->level = 'H';
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200766 al->map = NULL;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800767
768 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
769 cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
770 !perf_guest)
Namhyung Kimb3cef7f2014-03-17 16:59:21 -0300771 al->filtered |= (1 << HIST_FILTER__GUEST);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800772 if ((cpumode == PERF_RECORD_MISC_USER ||
773 cpumode == PERF_RECORD_MISC_KERNEL) &&
774 !perf_host)
Namhyung Kimb3cef7f2014-03-17 16:59:21 -0300775 al->filtered |= (1 << HIST_FILTER__HOST);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800776
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200777 return;
778 }
779try_again:
Arnaldo Carvalho de Melo9958e1f2009-12-11 14:50:36 -0200780 al->map = map_groups__find(mg, type, al->addr);
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200781 if (al->map == NULL) {
782 /*
783 * If this is outside of all known maps, and is a negative
784 * address, try to look it up in the kernel dso, as it might be
785 * a vsyscall or vdso (which executes in user-mode).
786 *
787 * XXX This is nasty, we should have a symbol list in the
788 * "[vdso]" dso, but for now lets use the old trick of looking
789 * in the whole kernel symbol list.
790 */
Adrian Hunterfbe2af42014-08-15 22:08:39 +0300791 if (cpumode == PERF_RECORD_MISC_USER && machine &&
792 mg != &machine->kmaps &&
793 machine__kernel_ip(machine, al->addr)) {
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300794 mg = &machine->kmaps;
Adrian Hunter1f2a7062014-07-14 13:02:31 +0300795 load_map = true;
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200796 goto try_again;
797 }
Adrian Hunter5b7ba822013-08-07 14:38:46 +0300798 } else {
799 /*
800 * Kernel maps might be changed when loading symbols so loading
801 * must be done prior to using kernel maps.
802 */
803 if (load_map)
Adrian Hunter326f59b2013-08-08 14:32:27 +0300804 map__load(al->map, machine->symbol_filter);
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200805 al->addr = al->map->map_ip(al->map, al->addr);
Adrian Hunter5b7ba822013-08-07 14:38:46 +0300806 }
Arnaldo Carvalho de Melo59ee68e2010-01-14 23:45:29 -0200807}
808
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200809void thread__find_addr_location(struct thread *thread, struct machine *machine,
810 u8 cpumode, enum map_type type, u64 addr,
Adrian Hunter61710bd2013-08-08 14:32:26 +0300811 struct addr_location *al)
Arnaldo Carvalho de Melo59ee68e2010-01-14 23:45:29 -0200812{
Adrian Hunter326f59b2013-08-08 14:32:27 +0300813 thread__find_addr_map(thread, machine, cpumode, type, addr, al);
Arnaldo Carvalho de Melo59ee68e2010-01-14 23:45:29 -0200814 if (al->map != NULL)
Adrian Hunter61710bd2013-08-08 14:32:26 +0300815 al->sym = map__find_symbol(al->map, al->addr,
816 machine->symbol_filter);
Arnaldo Carvalho de Melo59ee68e2010-01-14 23:45:29 -0200817 else
818 al->sym = NULL;
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200819}
820
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200821int perf_event__preprocess_sample(const union perf_event *event,
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200822 struct machine *machine,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200823 struct addr_location *al,
Adrian Huntere44baa32013-08-08 14:32:25 +0300824 struct perf_sample *sample)
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200825{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200826 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
Adrian Hunteref893252013-08-27 11:23:06 +0300827 struct thread *thread = machine__findnew_thread(machine, sample->pid,
Namhyung Kim13ce34d2014-05-12 09:56:42 +0900828 sample->tid);
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200829
830 if (thread == NULL)
831 return -1;
832
Frederic Weisbeckerb9c51432013-09-11 14:46:56 +0200833 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
Arnaldo Carvalho de Melo1f626bc2010-05-09 19:57:08 -0300834 /*
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200835 * Have we already created the kernel maps for this machine?
Arnaldo Carvalho de Melo1f626bc2010-05-09 19:57:08 -0300836 *
837 * This should have happened earlier, when we processed the kernel MMAP
838 * events, but for older perf.data files there was no such thing, so do
839 * it now.
840 */
841 if (cpumode == PERF_RECORD_MISC_KERNEL &&
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200842 machine->vmlinux_maps[MAP__FUNCTION] == NULL)
843 machine__create_kernel_maps(machine);
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200844
Arnaldo Carvalho de Melo743eb8682011-11-28 07:56:39 -0200845 thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
Adrian Hunteref893252013-08-27 11:23:06 +0300846 sample->ip, al);
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200847 dump_printf(" ...... dso: %s\n",
848 al->map ? al->map->dso->long_name :
849 al->level == 'H' ? "[hypervisor]" : "<not found>");
Namhyung Kim466fa762014-03-17 17:12:27 -0300850
851 if (thread__is_filtered(thread))
852 al->filtered |= (1 << HIST_FILTER__THREAD);
853
Arnaldo Carvalho de Melo96415e42010-03-24 16:40:15 -0300854 al->sym = NULL;
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200855 al->cpu = sample->cpu;
Arnaldo Carvalho de Meloc410a332009-12-15 20:04:41 -0200856
Arnaldo Carvalho de Melo96415e42010-03-24 16:40:15 -0300857 if (al->map) {
Namhyung Kimcb8f4e92011-12-13 00:16:55 +0900858 struct dso *dso = al->map->dso;
859
Arnaldo Carvalho de Melo96415e42010-03-24 16:40:15 -0300860 if (symbol_conf.dso_list &&
Namhyung Kimcb8f4e92011-12-13 00:16:55 +0900861 (!dso || !(strlist__has_entry(symbol_conf.dso_list,
862 dso->short_name) ||
863 (dso->short_name != dso->long_name &&
864 strlist__has_entry(symbol_conf.dso_list,
Namhyung Kimb3cef7f2014-03-17 16:59:21 -0300865 dso->long_name))))) {
866 al->filtered |= (1 << HIST_FILTER__DSO);
Namhyung Kimb3cef7f2014-03-17 16:59:21 -0300867 }
Arnaldo Carvalho de Melo96415e42010-03-24 16:40:15 -0300868
Adrian Huntere44baa32013-08-08 14:32:25 +0300869 al->sym = map__find_symbol(al->map, al->addr,
870 machine->symbol_filter);
Arnaldo Carvalho de Melo96415e42010-03-24 16:40:15 -0300871 }
Arnaldo Carvalho de Meloc410a332009-12-15 20:04:41 -0200872
Feng Tang1500b932012-09-07 16:42:23 +0800873 if (symbol_conf.sym_list &&
874 (!al->sym || !strlist__has_entry(symbol_conf.sym_list,
Namhyung Kimb3cef7f2014-03-17 16:59:21 -0300875 al->sym->name))) {
876 al->filtered |= (1 << HIST_FILTER__SYMBOL);
Namhyung Kimb3cef7f2014-03-17 16:59:21 -0300877 }
Arnaldo Carvalho de Meloc410a332009-12-15 20:04:41 -0200878
Arnaldo Carvalho de Meloc410a332009-12-15 20:04:41 -0200879 return 0;
Arnaldo Carvalho de Melo1ed091c2009-11-27 16:29:23 -0200880}
Adrian Hunter9b0d2d82014-07-22 16:17:39 +0300881
882bool is_bts_event(struct perf_event_attr *attr)
883{
884 return attr->type == PERF_TYPE_HARDWARE &&
885 (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
886 attr->sample_period == 1;
887}
888
889bool sample_addr_correlates_sym(struct perf_event_attr *attr)
890{
891 if (attr->type == PERF_TYPE_SOFTWARE &&
892 (attr->config == PERF_COUNT_SW_PAGE_FAULTS ||
893 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
894 attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))
895 return true;
896
897 if (is_bts_event(attr))
898 return true;
899
900 return false;
901}
902
903void perf_event__preprocess_sample_addr(union perf_event *event,
904 struct perf_sample *sample,
905 struct machine *machine,
906 struct thread *thread,
907 struct addr_location *al)
908{
909 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
910
911 thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
912 sample->addr, al);
913 if (!al->map)
914 thread__find_addr_map(thread, machine, cpumode, MAP__VARIABLE,
915 sample->addr, al);
916
917 al->cpu = sample->cpu;
918 al->sym = NULL;
919
920 if (al->map)
921 al->sym = map__find_symbol(al->map, al->addr, NULL);
922}