blob: cb2959a3fb43e12f6e7de76c6a7fc6a04221f8b7 [file] [log] [blame]
Xiao Guangrongb8f46c52010-02-03 11:53:14 +08001#define _FILE_OFFSET_BITS 64
2
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +02003#include <sys/types.h>
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02004#include <byteswap.h>
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +02005#include <unistd.h>
6#include <stdio.h>
7#include <stdlib.h>
Frederic Weisbecker8671dab2009-11-11 04:51:03 +01008#include <linux/list.h>
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02009#include <linux/kernel.h>
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +020010
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -020011#include "evlist.h"
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -030012#include "evsel.h"
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +020013#include "util.h"
14#include "header.h"
Frederic Weisbecker03456a12009-10-06 23:36:47 +020015#include "../perf.h"
16#include "trace-event.h"
Arnaldo Carvalho de Melo301a0b02009-12-13 19:50:25 -020017#include "session.h"
Frederic Weisbecker8671dab2009-11-11 04:51:03 +010018#include "symbol.h"
Frederic Weisbecker4778d2e2009-11-11 04:51:05 +010019#include "debug.h"
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +020020
Stephane Eraniana1ac1d32010-06-17 11:39:01 +020021static bool no_buildid_cache = false;
22
Arjan van de Ven8755a8f2009-09-12 07:52:51 +020023static int event_count;
24static struct perf_trace_event_type *events;
25
Arnaldo Carvalho de Meloae99fb22009-12-28 22:48:33 -020026int perf_header__push_event(u64 id, const char *name)
Arjan van de Ven8755a8f2009-09-12 07:52:51 +020027{
Arjan van de Venec60a3f2009-09-19 13:36:30 +020028 if (strlen(name) > MAX_EVENT_NAME)
Arnaldo Carvalho de Melo6beba7a2009-10-21 17:34:06 -020029 pr_warning("Event %s will be truncated\n", name);
Arjan van de Ven8755a8f2009-09-12 07:52:51 +020030
31 if (!events) {
32 events = malloc(sizeof(struct perf_trace_event_type));
Arnaldo Carvalho de Meloae99fb22009-12-28 22:48:33 -020033 if (events == NULL)
34 return -ENOMEM;
Arjan van de Ven8755a8f2009-09-12 07:52:51 +020035 } else {
Arnaldo Carvalho de Meloae99fb22009-12-28 22:48:33 -020036 struct perf_trace_event_type *nevents;
37
38 nevents = realloc(events, (event_count + 1) * sizeof(*events));
39 if (nevents == NULL)
40 return -ENOMEM;
41 events = nevents;
Arjan van de Ven8755a8f2009-09-12 07:52:51 +020042 }
43 memset(&events[event_count], 0, sizeof(struct perf_trace_event_type));
44 events[event_count].event_id = id;
Arjan van de Venec60a3f2009-09-19 13:36:30 +020045 strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1);
Arjan van de Ven8755a8f2009-09-12 07:52:51 +020046 event_count++;
Arnaldo Carvalho de Meloae99fb22009-12-28 22:48:33 -020047 return 0;
Arjan van de Ven8755a8f2009-09-12 07:52:51 +020048}
49
50char *perf_header__find_event(u64 id)
51{
52 int i;
53 for (i = 0 ; i < event_count; i++) {
54 if (events[i].event_id == id)
55 return events[i].name;
56 }
57 return NULL;
58}
59
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +020060static const char *__perf_magic = "PERFFILE";
61
62#define PERF_MAGIC (*(u64 *)__perf_magic)
63
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +020064struct perf_file_attr {
Ingo Molnarcdd6c482009-09-21 12:02:48 +020065 struct perf_event_attr attr;
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +020066 struct perf_file_section ids;
67};
68
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -030069void perf_header__set_feat(struct perf_header *header, int feat)
Arnaldo Carvalho de Melo8d063672009-11-04 18:50:43 -020070{
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -030071 set_bit(feat, header->adds_features);
Arnaldo Carvalho de Melo8d063672009-11-04 18:50:43 -020072}
73
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -030074void perf_header__clear_feat(struct perf_header *header, int feat)
Arnaldo Carvalho de Melobaa2f6c2010-11-26 19:39:15 -020075{
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -030076 clear_bit(feat, header->adds_features);
Arnaldo Carvalho de Melobaa2f6c2010-11-26 19:39:15 -020077}
78
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -030079bool perf_header__has_feat(const struct perf_header *header, int feat)
Arnaldo Carvalho de Melo8d063672009-11-04 18:50:43 -020080{
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -030081 return test_bit(feat, header->adds_features);
Arnaldo Carvalho de Melo8d063672009-11-04 18:50:43 -020082}
83
Arnaldo Carvalho de Melo3726cc72009-11-17 01:18:12 -020084static int do_write(int fd, const void *buf, size_t size)
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +020085{
86 while (size) {
87 int ret = write(fd, buf, size);
88
89 if (ret < 0)
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -020090 return -errno;
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +020091
92 size -= ret;
93 buf += ret;
94 }
Arnaldo Carvalho de Melo3726cc72009-11-17 01:18:12 -020095
96 return 0;
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +020097}
98
Arnaldo Carvalho de Melof92cb242010-01-04 16:19:28 -020099#define NAME_ALIGN 64
100
101static int write_padded(int fd, const void *bf, size_t count,
102 size_t count_aligned)
103{
104 static const char zero_buf[NAME_ALIGN];
105 int err = do_write(fd, bf, count);
106
107 if (!err)
108 err = do_write(fd, zero_buf, count_aligned - count);
109
110 return err;
111}
112
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200113#define dsos__for_each_with_build_id(pos, head) \
114 list_for_each_entry(pos, head, node) \
115 if (!pos->has_build_id) \
116 continue; \
117 else
118
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800119static int __dsos__write_buildid_table(struct list_head *head, pid_t pid,
120 u16 misc, int fd)
Frederic Weisbecker8671dab2009-11-11 04:51:03 +0100121{
Arnaldo Carvalho de Meloe30a3d12009-11-18 20:20:51 -0200122 struct dso *pos;
Frederic Weisbecker8671dab2009-11-11 04:51:03 +0100123
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200124 dsos__for_each_with_build_id(pos, head) {
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200125 int err;
Arnaldo Carvalho de Meloe30a3d12009-11-18 20:20:51 -0200126 struct build_id_event b;
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -0200127 size_t len;
Frederic Weisbecker8671dab2009-11-11 04:51:03 +0100128
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -0200129 if (!pos->hit)
130 continue;
131 len = pos->long_name_len + 1;
OGAWA Hirofumi7691b1e2009-12-06 20:10:49 +0900132 len = ALIGN(len, NAME_ALIGN);
Arnaldo Carvalho de Meloe30a3d12009-11-18 20:20:51 -0200133 memset(&b, 0, sizeof(b));
134 memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id));
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800135 b.pid = pid;
Arnaldo Carvalho de Meloa89e5abe2010-01-07 19:59:39 -0200136 b.header.misc = misc;
Arnaldo Carvalho de Meloe30a3d12009-11-18 20:20:51 -0200137 b.header.size = sizeof(b) + len;
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200138 err = do_write(fd, &b, sizeof(b));
139 if (err < 0)
140 return err;
Arnaldo Carvalho de Melof92cb242010-01-04 16:19:28 -0200141 err = write_padded(fd, pos->long_name,
142 pos->long_name_len + 1, len);
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200143 if (err < 0)
144 return err;
Frederic Weisbecker8671dab2009-11-11 04:51:03 +0100145 }
Arnaldo Carvalho de Melo3726cc72009-11-17 01:18:12 -0200146
147 return 0;
Frederic Weisbecker8671dab2009-11-11 04:51:03 +0100148}
149
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300150static int machine__write_buildid_table(struct machine *machine, int fd)
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300151{
152 int err;
153 u16 kmisc = PERF_RECORD_MISC_KERNEL,
154 umisc = PERF_RECORD_MISC_USER;
155
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300156 if (!machine__is_host(machine)) {
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300157 kmisc = PERF_RECORD_MISC_GUEST_KERNEL;
158 umisc = PERF_RECORD_MISC_GUEST_USER;
159 }
160
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300161 err = __dsos__write_buildid_table(&machine->kernel_dsos, machine->pid,
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300162 kmisc, fd);
163 if (err == 0)
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300164 err = __dsos__write_buildid_table(&machine->user_dsos,
165 machine->pid, umisc, fd);
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300166 return err;
167}
168
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800169static int dsos__write_buildid_table(struct perf_header *header, int fd)
Arnaldo Carvalho de Melob0da9542009-11-27 16:29:14 -0200170{
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800171 struct perf_session *session = container_of(header,
172 struct perf_session, header);
173 struct rb_node *nd;
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300174 int err = machine__write_buildid_table(&session->host_machine, fd);
175
176 if (err)
177 return err;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800178
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300179 for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
180 struct machine *pos = rb_entry(nd, struct machine, rb_node);
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300181 err = machine__write_buildid_table(pos, fd);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800182 if (err)
183 break;
184 }
Arnaldo Carvalho de Melob0da9542009-11-27 16:29:14 -0200185 return err;
186}
187
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200188int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
189 const char *name, bool is_kallsyms)
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200190{
191 const size_t size = PATH_MAX;
Lin Ming7ee235e2011-03-03 23:23:57 +0800192 char *realname, *filename = malloc(size),
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200193 *linkname = malloc(size), *targetname;
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200194 int len, err = -1;
195
Arnaldo Carvalho de Meloec80fde2011-05-26 09:53:51 -0300196 if (is_kallsyms) {
197 if (symbol_conf.kptr_restrict) {
198 pr_debug("Not caching a kptr_restrict'ed /proc/kallsyms\n");
199 return 0;
200 }
Lin Ming7ee235e2011-03-03 23:23:57 +0800201 realname = (char *)name;
Arnaldo Carvalho de Meloec80fde2011-05-26 09:53:51 -0300202 } else
Lin Ming7ee235e2011-03-03 23:23:57 +0800203 realname = realpath(name, NULL);
204
Franck Bui-Huu68a7a772010-12-10 22:06:26 +0100205 if (realname == NULL || filename == NULL || linkname == NULL)
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200206 goto out_free;
207
Arnaldo Carvalho de Melo9e201442010-01-14 18:30:06 -0200208 len = snprintf(filename, size, "%s%s%s",
Franck Bui-Huu68a7a772010-12-10 22:06:26 +0100209 debugdir, is_kallsyms ? "/" : "", realname);
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200210 if (mkdir_p(filename, 0755))
211 goto out_free;
212
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200213 snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id);
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200214
Arnaldo Carvalho de Melo9e201442010-01-14 18:30:06 -0200215 if (access(filename, F_OK)) {
216 if (is_kallsyms) {
217 if (copyfile("/proc/kallsyms", filename))
218 goto out_free;
Franck Bui-Huu68a7a772010-12-10 22:06:26 +0100219 } else if (link(realname, filename) && copyfile(name, filename))
Arnaldo Carvalho de Melo9e201442010-01-14 18:30:06 -0200220 goto out_free;
221 }
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200222
223 len = snprintf(linkname, size, "%s/.build-id/%.2s",
224 debugdir, sbuild_id);
225
226 if (access(linkname, X_OK) && mkdir_p(linkname, 0755))
227 goto out_free;
228
229 snprintf(linkname + len, size - len, "/%s", sbuild_id + 2);
230 targetname = filename + strlen(debugdir) - 5;
231 memcpy(targetname, "../..", 5);
232
233 if (symlink(targetname, linkname) == 0)
234 err = 0;
235out_free:
Lin Ming7ee235e2011-03-03 23:23:57 +0800236 if (!is_kallsyms)
237 free(realname);
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200238 free(filename);
239 free(linkname);
240 return err;
241}
242
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200243static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size,
244 const char *name, const char *debugdir,
245 bool is_kallsyms)
246{
247 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
248
249 build_id__sprintf(build_id, build_id_size, sbuild_id);
250
251 return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms);
252}
253
254int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir)
255{
256 const size_t size = PATH_MAX;
257 char *filename = malloc(size),
258 *linkname = malloc(size);
259 int err = -1;
260
261 if (filename == NULL || linkname == NULL)
262 goto out_free;
263
264 snprintf(linkname, size, "%s/.build-id/%.2s/%s",
265 debugdir, sbuild_id, sbuild_id + 2);
266
267 if (access(linkname, F_OK))
268 goto out_free;
269
270 if (readlink(linkname, filename, size) < 0)
271 goto out_free;
272
273 if (unlink(linkname))
274 goto out_free;
275
276 /*
277 * Since the link is relative, we must make it absolute:
278 */
279 snprintf(linkname, size, "%s/.build-id/%.2s/%s",
280 debugdir, sbuild_id, filename);
281
282 if (unlink(linkname))
283 goto out_free;
284
285 err = 0;
286out_free:
287 free(filename);
288 free(linkname);
289 return err;
290}
291
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300292static int dso__cache_build_id(struct dso *dso, const char *debugdir)
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200293{
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300294 bool is_kallsyms = dso->kernel && dso->long_name[0] != '/';
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200295
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300296 return build_id_cache__add_b(dso->build_id, sizeof(dso->build_id),
297 dso->long_name, debugdir, is_kallsyms);
Arnaldo Carvalho de Meloef12a142010-01-20 15:28:45 -0200298}
299
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200300static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir)
301{
302 struct dso *pos;
303 int err = 0;
304
305 dsos__for_each_with_build_id(pos, head)
306 if (dso__cache_build_id(pos, debugdir))
307 err = -1;
308
309 return err;
310}
311
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300312static int machine__cache_build_ids(struct machine *machine, const char *debugdir)
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200313{
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300314 int ret = __dsos__cache_build_ids(&machine->kernel_dsos, debugdir);
315 ret |= __dsos__cache_build_ids(&machine->user_dsos, debugdir);
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300316 return ret;
317}
318
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300319static int perf_session__cache_build_ids(struct perf_session *session)
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300320{
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800321 struct rb_node *nd;
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300322 int ret;
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200323 char debugdir[PATH_MAX];
324
Stephane Eranian45de34b2010-06-01 21:25:01 +0200325 snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir);
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200326
327 if (mkdir(debugdir, 0755) != 0 && errno != EEXIST)
328 return -1;
329
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300330 ret = machine__cache_build_ids(&session->host_machine, debugdir);
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300331
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300332 for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300333 struct machine *pos = rb_entry(nd, struct machine, rb_node);
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300334 ret |= machine__cache_build_ids(pos, debugdir);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800335 }
336 return ret ? -1 : 0;
337}
338
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300339static bool machine__read_build_ids(struct machine *machine, bool with_hits)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800340{
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300341 bool ret = __dsos__read_build_ids(&machine->kernel_dsos, with_hits);
342 ret |= __dsos__read_build_ids(&machine->user_dsos, with_hits);
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300343 return ret;
344}
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800345
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300346static bool perf_session__read_build_ids(struct perf_session *session, bool with_hits)
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300347{
348 struct rb_node *nd;
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300349 bool ret = machine__read_build_ids(&session->host_machine, with_hits);
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300350
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300351 for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) {
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300352 struct machine *pos = rb_entry(nd, struct machine, rb_node);
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300353 ret |= machine__read_build_ids(pos, with_hits);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800354 }
355
356 return ret;
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200357}
358
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300359static int perf_header__adds_write(struct perf_header *header,
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200360 struct perf_evlist *evlist, int fd)
Frederic Weisbecker2ba08252009-10-17 17:12:34 +0200361{
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100362 int nr_sections;
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -0300363 struct perf_session *session;
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100364 struct perf_file_section *feat_sec;
365 int sec_size;
366 u64 sec_start;
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200367 int idx = 0, err;
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100368
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300369 session = container_of(header, struct perf_session, header);
Arnaldo Carvalho de Melobaa2f6c2010-11-26 19:39:15 -0200370
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300371 if (perf_header__has_feat(header, HEADER_BUILD_ID &&
Arnaldo Carvalho de Melobaa2f6c2010-11-26 19:39:15 -0200372 !perf_session__read_build_ids(session, true)))
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300373 perf_header__clear_feat(header, HEADER_BUILD_ID);
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100374
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300375 nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS);
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100376 if (!nr_sections)
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200377 return 0;
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100378
379 feat_sec = calloc(sizeof(*feat_sec), nr_sections);
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200380 if (feat_sec == NULL)
381 return -ENOMEM;
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100382
383 sec_size = sizeof(*feat_sec) * nr_sections;
384
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300385 sec_start = header->data_offset + header->data_size;
Xiao Guangrongf887f302010-02-04 16:46:42 +0800386 lseek(fd, sec_start + sec_size, SEEK_SET);
Frederic Weisbecker2ba08252009-10-17 17:12:34 +0200387
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300388 if (perf_header__has_feat(header, HEADER_TRACE_INFO)) {
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100389 struct perf_file_section *trace_sec;
390
391 trace_sec = &feat_sec[idx++];
392
Frederic Weisbecker2ba08252009-10-17 17:12:34 +0200393 /* Write trace info */
Xiao Guangrongf887f302010-02-04 16:46:42 +0800394 trace_sec->offset = lseek(fd, 0, SEEK_CUR);
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -0200395 read_tracing_data(fd, &evlist->entries);
Xiao Guangrongf887f302010-02-04 16:46:42 +0800396 trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset;
Frederic Weisbecker2ba08252009-10-17 17:12:34 +0200397 }
Frederic Weisbecker8671dab2009-11-11 04:51:03 +0100398
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300399 if (perf_header__has_feat(header, HEADER_BUILD_ID)) {
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100400 struct perf_file_section *buildid_sec;
401
402 buildid_sec = &feat_sec[idx++];
403
404 /* Write build-ids */
Xiao Guangrongf887f302010-02-04 16:46:42 +0800405 buildid_sec->offset = lseek(fd, 0, SEEK_CUR);
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300406 err = dsos__write_buildid_table(header, fd);
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200407 if (err < 0) {
408 pr_debug("failed to write buildid table\n");
409 goto out_free;
410 }
Xiao Guangrongf887f302010-02-04 16:46:42 +0800411 buildid_sec->size = lseek(fd, 0, SEEK_CUR) -
412 buildid_sec->offset;
Stephane Eraniana1ac1d32010-06-17 11:39:01 +0200413 if (!no_buildid_cache)
414 perf_session__cache_build_ids(session);
Frederic Weisbecker8671dab2009-11-11 04:51:03 +0100415 }
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100416
Xiao Guangrongf887f302010-02-04 16:46:42 +0800417 lseek(fd, sec_start, SEEK_SET);
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200418 err = do_write(fd, feat_sec, sec_size);
419 if (err < 0)
420 pr_debug("failed to write feature section\n");
421out_free:
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100422 free(feat_sec);
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200423 return err;
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100424}
Frederic Weisbecker2ba08252009-10-17 17:12:34 +0200425
Tom Zanussi8dc58102010-04-01 23:59:15 -0500426int perf_header__write_pipe(int fd)
427{
428 struct perf_pipe_file_header f_header;
429 int err;
430
431 f_header = (struct perf_pipe_file_header){
432 .magic = PERF_MAGIC,
433 .size = sizeof(f_header),
434 };
435
436 err = do_write(fd, &f_header, sizeof(f_header));
437 if (err < 0) {
438 pr_debug("failed to write perf pipe header\n");
439 return err;
440 }
441
442 return 0;
443}
444
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300445int perf_session__write_header(struct perf_session *session,
446 struct perf_evlist *evlist,
447 int fd, bool at_exit)
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200448{
449 struct perf_file_header f_header;
450 struct perf_file_attr f_attr;
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300451 struct perf_header *header = &session->header;
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300452 struct perf_evsel *attr, *pair = NULL;
453 int err;
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200454
455 lseek(fd, sizeof(f_header), SEEK_SET);
456
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300457 if (session->evlist != evlist)
458 pair = list_entry(session->evlist->entries.next, struct perf_evsel, node);
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200459
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300460 list_for_each_entry(attr, &evlist->entries, node) {
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200461 attr->id_offset = lseek(fd, 0, SEEK_CUR);
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200462 err = do_write(fd, attr->id, attr->ids * sizeof(u64));
463 if (err < 0) {
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300464out_err_write:
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200465 pr_debug("failed to write perf header\n");
466 return err;
467 }
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300468 if (session->evlist != evlist) {
469 err = do_write(fd, pair->id, pair->ids * sizeof(u64));
470 if (err < 0)
471 goto out_err_write;
472 attr->ids += pair->ids;
473 pair = list_entry(pair->node.next, struct perf_evsel, node);
474 }
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200475 }
476
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300477 header->attr_offset = lseek(fd, 0, SEEK_CUR);
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200478
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300479 list_for_each_entry(attr, &evlist->entries, node) {
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200480 f_attr = (struct perf_file_attr){
481 .attr = attr->attr,
482 .ids = {
483 .offset = attr->id_offset,
484 .size = attr->ids * sizeof(u64),
485 }
486 };
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200487 err = do_write(fd, &f_attr, sizeof(f_attr));
488 if (err < 0) {
489 pr_debug("failed to write perf header attribute\n");
490 return err;
491 }
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200492 }
493
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300494 header->event_offset = lseek(fd, 0, SEEK_CUR);
495 header->event_size = event_count * sizeof(struct perf_trace_event_type);
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200496 if (events) {
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300497 err = do_write(fd, events, header->event_size);
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200498 if (err < 0) {
499 pr_debug("failed to write perf header events\n");
500 return err;
501 }
502 }
Arjan van de Ven8755a8f2009-09-12 07:52:51 +0200503
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300504 header->data_offset = lseek(fd, 0, SEEK_CUR);
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200505
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200506 if (at_exit) {
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300507 err = perf_header__adds_write(header, evlist, fd);
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200508 if (err < 0)
509 return err;
510 }
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100511
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200512 f_header = (struct perf_file_header){
513 .magic = PERF_MAGIC,
514 .size = sizeof(f_header),
515 .attr_size = sizeof(f_attr),
516 .attrs = {
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300517 .offset = header->attr_offset,
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300518 .size = evlist->nr_entries * sizeof(f_attr),
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200519 },
520 .data = {
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300521 .offset = header->data_offset,
522 .size = header->data_size,
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200523 },
Arjan van de Ven8755a8f2009-09-12 07:52:51 +0200524 .event_types = {
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300525 .offset = header->event_offset,
526 .size = header->event_size,
Arjan van de Ven8755a8f2009-09-12 07:52:51 +0200527 },
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200528 };
529
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300530 memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features));
Frederic Weisbecker2ba08252009-10-17 17:12:34 +0200531
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200532 lseek(fd, 0, SEEK_SET);
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200533 err = do_write(fd, &f_header, sizeof(f_header));
534 if (err < 0) {
535 pr_debug("failed to write perf header\n");
536 return err;
537 }
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300538 lseek(fd, header->data_offset + header->data_size, SEEK_SET);
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200539
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300540 header->frozen = 1;
Arnaldo Carvalho de Melod5eed902009-11-19 14:55:56 -0200541 return 0;
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200542}
543
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300544static int perf_header__getbuffer64(struct perf_header *header,
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200545 int fd, void *buf, size_t size)
546{
Arnaldo Carvalho de Melo1e7972c2011-01-03 16:50:55 -0200547 if (readn(fd, buf, size) <= 0)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200548 return -1;
549
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300550 if (header->needs_swap)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200551 mem_bswap_64(buf, size);
552
553 return 0;
554}
555
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300556int perf_header__process_sections(struct perf_header *header, int fd,
557 int (*process)(struct perf_file_section *section,
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200558 struct perf_header *ph,
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200559 int feat, int fd))
Frederic Weisbecker2ba08252009-10-17 17:12:34 +0200560{
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100561 struct perf_file_section *feat_sec;
562 int nr_sections;
563 int sec_size;
564 int idx = 0;
Arnaldo Carvalho de Melo769885f2009-12-28 22:48:32 -0200565 int err = -1, feat = 1;
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100566
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300567 nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS);
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100568 if (!nr_sections)
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200569 return 0;
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100570
571 feat_sec = calloc(sizeof(*feat_sec), nr_sections);
572 if (!feat_sec)
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200573 return -1;
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100574
575 sec_size = sizeof(*feat_sec) * nr_sections;
576
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300577 lseek(fd, header->data_offset + header->data_size, SEEK_SET);
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100578
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300579 if (perf_header__getbuffer64(header, fd, feat_sec, sec_size))
Arnaldo Carvalho de Melo769885f2009-12-28 22:48:32 -0200580 goto out_free;
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100581
Arnaldo Carvalho de Melo769885f2009-12-28 22:48:32 -0200582 err = 0;
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200583 while (idx < nr_sections && feat < HEADER_LAST_FEATURE) {
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300584 if (perf_header__has_feat(header, feat)) {
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200585 struct perf_file_section *sec = &feat_sec[idx++];
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100586
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300587 err = process(sec, header, feat, fd);
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200588 if (err < 0)
589 break;
590 }
591 ++feat;
Frederic Weisbecker4778d2e2009-11-11 04:51:05 +0100592 }
Arnaldo Carvalho de Melo769885f2009-12-28 22:48:32 -0200593out_free:
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100594 free(feat_sec);
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200595 return err;
Arnaldo Carvalho de Melo769885f2009-12-28 22:48:32 -0200596}
Frederic Weisbecker2ba08252009-10-17 17:12:34 +0200597
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300598int perf_file_header__read(struct perf_file_header *header,
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200599 struct perf_header *ph, int fd)
600{
601 lseek(fd, 0, SEEK_SET);
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200602
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300603 if (readn(fd, header, sizeof(*header)) <= 0 ||
604 memcmp(&header->magic, __perf_magic, sizeof(header->magic)))
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200605 return -1;
606
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300607 if (header->attr_size != sizeof(struct perf_file_attr)) {
608 u64 attr_size = bswap_64(header->attr_size);
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200609
610 if (attr_size != sizeof(struct perf_file_attr))
611 return -1;
612
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300613 mem_bswap_64(header, offsetof(struct perf_file_header,
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200614 adds_features));
615 ph->needs_swap = true;
616 }
617
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300618 if (header->size != sizeof(*header)) {
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200619 /* Support the previous format */
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300620 if (header->size == offsetof(typeof(*header), adds_features))
621 bitmap_zero(header->adds_features, HEADER_FEAT_BITS);
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200622 else
623 return -1;
624 }
625
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300626 memcpy(&ph->adds_features, &header->adds_features,
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200627 sizeof(ph->adds_features));
628 /*
629 * FIXME: hack that assumes that if we need swap the perf.data file
630 * may be coming from an arch with a different word-size, ergo different
631 * DEFINE_BITMAP format, investigate more later, but for now its mostly
632 * safe to assume that we have a build-id section. Trace files probably
633 * have several other issues in this realm anyway...
634 */
635 if (ph->needs_swap) {
636 memset(&ph->adds_features, 0, sizeof(ph->adds_features));
637 perf_header__set_feat(ph, HEADER_BUILD_ID);
638 }
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200639
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300640 ph->event_offset = header->event_types.offset;
641 ph->event_size = header->event_types.size;
642 ph->data_offset = header->data.offset;
643 ph->data_size = header->data.size;
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200644 return 0;
645}
646
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800647static int __event_process_build_id(struct build_id_event *bev,
648 char *filename,
649 struct perf_session *session)
650{
651 int err = -1;
652 struct list_head *head;
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300653 struct machine *machine;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800654 u16 misc;
655 struct dso *dso;
656 enum dso_kernel_type dso_type;
657
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300658 machine = perf_session__findnew_machine(session, bev->pid);
659 if (!machine)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800660 goto out;
661
662 misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
663
664 switch (misc) {
665 case PERF_RECORD_MISC_KERNEL:
666 dso_type = DSO_TYPE_KERNEL;
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300667 head = &machine->kernel_dsos;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800668 break;
669 case PERF_RECORD_MISC_GUEST_KERNEL:
670 dso_type = DSO_TYPE_GUEST_KERNEL;
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300671 head = &machine->kernel_dsos;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800672 break;
673 case PERF_RECORD_MISC_USER:
674 case PERF_RECORD_MISC_GUEST_USER:
675 dso_type = DSO_TYPE_USER;
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300676 head = &machine->user_dsos;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800677 break;
678 default:
679 goto out;
680 }
681
682 dso = __dsos__findnew(head, filename);
683 if (dso != NULL) {
Tom Zanussi454c4072010-05-01 01:41:20 -0500684 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
685
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800686 dso__set_build_id(dso, &bev->build_id);
Tom Zanussi454c4072010-05-01 01:41:20 -0500687
688 if (filename[0] == '[')
689 dso->kernel = dso_type;
690
691 build_id__sprintf(dso->build_id, sizeof(dso->build_id),
692 sbuild_id);
693 pr_debug("build id event received for %s: %s\n",
694 dso->long_name, sbuild_id);
695 }
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800696
697 err = 0;
698out:
699 return err;
700}
701
Arnaldo Carvalho de Melob2511482011-03-22 13:36:45 -0300702static int perf_header__read_build_ids_abi_quirk(struct perf_header *header,
703 int input, u64 offset, u64 size)
704{
705 struct perf_session *session = container_of(header, struct perf_session, header);
706 struct {
707 struct perf_event_header header;
708 u8 build_id[ALIGN(BUILD_ID_SIZE, sizeof(u64))];
709 char filename[0];
710 } old_bev;
711 struct build_id_event bev;
712 char filename[PATH_MAX];
713 u64 limit = offset + size;
714
715 while (offset < limit) {
716 ssize_t len;
717
718 if (read(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev))
719 return -1;
720
721 if (header->needs_swap)
722 perf_event_header__bswap(&old_bev.header);
723
724 len = old_bev.header.size - sizeof(old_bev);
725 if (read(input, filename, len) != len)
726 return -1;
727
728 bev.header = old_bev.header;
729 bev.pid = 0;
730 memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id));
731 __event_process_build_id(&bev, filename, session);
732
733 offset += bev.header.size;
734 }
735
736 return 0;
737}
738
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300739static int perf_header__read_build_ids(struct perf_header *header,
740 int input, u64 offset, u64 size)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800741{
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300742 struct perf_session *session = container_of(header, struct perf_session, header);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800743 struct build_id_event bev;
744 char filename[PATH_MAX];
Arnaldo Carvalho de Melob2511482011-03-22 13:36:45 -0300745 u64 limit = offset + size, orig_offset = offset;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800746 int err = -1;
747
748 while (offset < limit) {
749 ssize_t len;
750
751 if (read(input, &bev, sizeof(bev)) != sizeof(bev))
752 goto out;
753
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300754 if (header->needs_swap)
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800755 perf_event_header__bswap(&bev.header);
756
757 len = bev.header.size - sizeof(bev);
758 if (read(input, filename, len) != len)
759 goto out;
Arnaldo Carvalho de Melob2511482011-03-22 13:36:45 -0300760 /*
761 * The a1645ce1 changeset:
762 *
763 * "perf: 'perf kvm' tool for monitoring guest performance from host"
764 *
765 * Added a field to struct build_id_event that broke the file
766 * format.
767 *
768 * Since the kernel build-id is the first entry, process the
769 * table using the old format if the well known
770 * '[kernel.kallsyms]' string for the kernel build-id has the
771 * first 4 characters chopped off (where the pid_t sits).
772 */
773 if (memcmp(filename, "nel.kallsyms]", 13) == 0) {
774 if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1)
775 return -1;
776 return perf_header__read_build_ids_abi_quirk(header, input, offset, size);
777 }
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800778
779 __event_process_build_id(&bev, filename, session);
780
781 offset += bev.header.size;
782 }
783 err = 0;
784out:
785 return err;
786}
787
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300788static int perf_file_section__process(struct perf_file_section *section,
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200789 struct perf_header *ph,
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200790 int feat, int fd)
791{
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300792 if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) {
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200793 pr_debug("Failed to lseek to %" PRIu64 " offset for feature "
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300794 "%d, continuing...\n", section->offset, feat);
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200795 return 0;
796 }
797
798 switch (feat) {
799 case HEADER_TRACE_INFO:
Tom Zanussi454c4072010-05-01 01:41:20 -0500800 trace_report(fd, false);
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200801 break;
802
803 case HEADER_BUILD_ID:
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300804 if (perf_header__read_build_ids(ph, fd, section->offset, section->size))
Arnaldo Carvalho de Melo37562ea2009-11-16 16:32:43 -0200805 pr_debug("Failed to read buildids, continuing...\n");
806 break;
807 default:
808 pr_debug("unknown feature %d, continuing...\n", feat);
809 }
810
811 return 0;
812}
813
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300814static int perf_file_header__read_pipe(struct perf_pipe_file_header *header,
Tom Zanussi454c4072010-05-01 01:41:20 -0500815 struct perf_header *ph, int fd,
816 bool repipe)
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200817{
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300818 if (readn(fd, header, sizeof(*header)) <= 0 ||
819 memcmp(&header->magic, __perf_magic, sizeof(header->magic)))
Tom Zanussi8dc58102010-04-01 23:59:15 -0500820 return -1;
821
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300822 if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0)
Tom Zanussi454c4072010-05-01 01:41:20 -0500823 return -1;
824
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300825 if (header->size != sizeof(*header)) {
826 u64 size = bswap_64(header->size);
Tom Zanussi8dc58102010-04-01 23:59:15 -0500827
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300828 if (size != sizeof(*header))
Tom Zanussi8dc58102010-04-01 23:59:15 -0500829 return -1;
830
831 ph->needs_swap = true;
832 }
833
834 return 0;
835}
836
837static int perf_header__read_pipe(struct perf_session *session, int fd)
838{
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300839 struct perf_header *header = &session->header;
Tom Zanussi8dc58102010-04-01 23:59:15 -0500840 struct perf_pipe_file_header f_header;
841
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300842 if (perf_file_header__read_pipe(&f_header, header, fd,
Tom Zanussi454c4072010-05-01 01:41:20 -0500843 session->repipe) < 0) {
Tom Zanussi8dc58102010-04-01 23:59:15 -0500844 pr_debug("incompatible file format\n");
845 return -EINVAL;
846 }
847
848 session->fd = fd;
849
850 return 0;
851}
852
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300853int perf_session__read_header(struct perf_session *session, int fd)
Tom Zanussi8dc58102010-04-01 23:59:15 -0500854{
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300855 struct perf_header *header = &session->header;
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200856 struct perf_file_header f_header;
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200857 struct perf_file_attr f_attr;
858 u64 f_id;
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200859 int nr_attrs, nr_ids, i, j;
860
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300861 session->evlist = perf_evlist__new(NULL, NULL);
862 if (session->evlist == NULL)
863 return -ENOMEM;
864
Tom Zanussi8dc58102010-04-01 23:59:15 -0500865 if (session->fd_pipe)
866 return perf_header__read_pipe(session, fd);
867
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300868 if (perf_file_header__read(&f_header, header, fd) < 0) {
Arnaldo Carvalho de Melo4dc0a042009-11-19 14:55:55 -0200869 pr_debug("incompatible file format\n");
870 return -EINVAL;
871 }
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200872
873 nr_attrs = f_header.attrs.size / sizeof(f_attr);
874 lseek(fd, f_header.attrs.offset, SEEK_SET);
875
876 for (i = 0; i < nr_attrs; i++) {
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300877 struct perf_evsel *evsel;
Peter Zijlstra1c222bc2009-08-06 20:57:41 +0200878 off_t tmp;
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200879
David Aherneda39132011-07-15 12:34:09 -0600880 if (readn(fd, &f_attr, sizeof(f_attr)) <= 0)
Arnaldo Carvalho de Melo769885f2009-12-28 22:48:32 -0200881 goto out_errno;
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200882
David Aherneda39132011-07-15 12:34:09 -0600883 if (header->needs_swap)
884 perf_event__attr_swap(&f_attr.attr);
885
Peter Zijlstra1c222bc2009-08-06 20:57:41 +0200886 tmp = lseek(fd, 0, SEEK_CUR);
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300887 evsel = perf_evsel__new(&f_attr.attr, i);
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200888
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300889 if (evsel == NULL)
890 goto out_delete_evlist;
891 /*
892 * Do it before so that if perf_evsel__alloc_id fails, this
893 * entry gets purged too at perf_evlist__delete().
894 */
895 perf_evlist__add(session->evlist, evsel);
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200896
897 nr_ids = f_attr.ids.size / sizeof(u64);
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300898 /*
899 * We don't have the cpu and thread maps on the header, so
900 * for allocating the perf_sample_id table we fake 1 cpu and
901 * hattr->ids threads.
902 */
903 if (perf_evsel__alloc_id(evsel, 1, nr_ids))
904 goto out_delete_evlist;
905
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200906 lseek(fd, f_attr.ids.offset, SEEK_SET);
907
908 for (j = 0; j < nr_ids; j++) {
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300909 if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id)))
Arnaldo Carvalho de Melo769885f2009-12-28 22:48:32 -0200910 goto out_errno;
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200911
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300912 perf_evlist__id_add(session->evlist, evsel, 0, j, f_id);
Arnaldo Carvalho de Melo4dc0a042009-11-19 14:55:55 -0200913 }
Arnaldo Carvalho de Melo11deb1f2009-11-17 01:18:09 -0200914
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200915 lseek(fd, tmp, SEEK_SET);
916 }
917
Arjan van de Ven8755a8f2009-09-12 07:52:51 +0200918 if (f_header.event_types.size) {
919 lseek(fd, f_header.event_types.offset, SEEK_SET);
920 events = malloc(f_header.event_types.size);
Arnaldo Carvalho de Melo4dc0a042009-11-19 14:55:55 -0200921 if (events == NULL)
922 return -ENOMEM;
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300923 if (perf_header__getbuffer64(header, fd, events,
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200924 f_header.event_types.size))
Arnaldo Carvalho de Melo769885f2009-12-28 22:48:32 -0200925 goto out_errno;
Arjan van de Ven8755a8f2009-09-12 07:52:51 +0200926 event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type);
927 }
Frederic Weisbecker03456a12009-10-06 23:36:47 +0200928
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300929 perf_header__process_sections(header, fd, perf_file_section__process);
Frederic Weisbecker4778d2e2009-11-11 04:51:05 +0100930
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300931 lseek(fd, header->data_offset, SEEK_SET);
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200932
Arnaldo Carvalho de Melo1c0b04d2011-03-09 08:13:19 -0300933 header->frozen = 1;
Arnaldo Carvalho de Melo4dc0a042009-11-19 14:55:55 -0200934 return 0;
Arnaldo Carvalho de Melo769885f2009-12-28 22:48:32 -0200935out_errno:
936 return -errno;
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300937
938out_delete_evlist:
939 perf_evlist__delete(session->evlist);
940 session->evlist = NULL;
941 return -ENOMEM;
Peter Zijlstra7c6a1c62009-06-25 17:05:54 +0200942}
Frederic Weisbecker0d3a5c82009-08-16 20:56:37 +0200943
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200944int perf_event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id,
945 perf_event__handler_t process,
946 struct perf_session *session)
Frederic Weisbecker0d3a5c82009-08-16 20:56:37 +0200947{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200948 union perf_event *ev;
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500949 size_t size;
950 int err;
951
952 size = sizeof(struct perf_event_attr);
953 size = ALIGN(size, sizeof(u64));
954 size += sizeof(struct perf_event_header);
955 size += ids * sizeof(u64);
956
957 ev = malloc(size);
958
Chris Samuelce47dc52010-11-13 13:35:06 +1100959 if (ev == NULL)
960 return -ENOMEM;
961
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500962 ev->attr.attr = *attr;
963 memcpy(ev->attr.id, id, ids * sizeof(u64));
964
965 ev->attr.header.type = PERF_RECORD_HEADER_ATTR;
966 ev->attr.header.size = size;
967
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -0200968 err = process(ev, NULL, session);
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500969
970 free(ev);
971
972 return err;
973}
974
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300975int perf_session__synthesize_attrs(struct perf_session *session,
976 perf_event__handler_t process)
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500977{
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300978 struct perf_evsel *attr;
979 int err = 0;
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500980
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300981 list_for_each_entry(attr, &session->evlist->entries, node) {
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200982 err = perf_event__synthesize_attr(&attr->attr, attr->ids,
983 attr->id, process, session);
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500984 if (err) {
985 pr_debug("failed to create perf header attribute\n");
986 return err;
987 }
988 }
989
990 return err;
991}
992
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200993int perf_event__process_attr(union perf_event *event,
994 struct perf_session *session)
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500995{
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500996 unsigned int i, ids, n_ids;
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300997 struct perf_evsel *evsel;
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500998
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -0300999 if (session->evlist == NULL) {
1000 session->evlist = perf_evlist__new(NULL, NULL);
1001 if (session->evlist == NULL)
Tom Zanussi2c46dbb2010-04-01 23:59:19 -05001002 return -ENOMEM;
Tom Zanussi2c46dbb2010-04-01 23:59:19 -05001003 }
1004
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -03001005 evsel = perf_evsel__new(&event->attr.attr,
1006 session->evlist->nr_entries);
1007 if (evsel == NULL)
Tom Zanussi2c46dbb2010-04-01 23:59:19 -05001008 return -ENOMEM;
Tom Zanussi2c46dbb2010-04-01 23:59:19 -05001009
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -03001010 perf_evlist__add(session->evlist, evsel);
1011
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001012 ids = event->header.size;
1013 ids -= (void *)&event->attr.id - (void *)event;
Tom Zanussi2c46dbb2010-04-01 23:59:19 -05001014 n_ids = ids / sizeof(u64);
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -03001015 /*
1016 * We don't have the cpu and thread maps on the header, so
1017 * for allocating the perf_sample_id table we fake 1 cpu and
1018 * hattr->ids threads.
1019 */
1020 if (perf_evsel__alloc_id(evsel, 1, n_ids))
1021 return -ENOMEM;
Tom Zanussi2c46dbb2010-04-01 23:59:19 -05001022
1023 for (i = 0; i < n_ids; i++) {
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -03001024 perf_evlist__id_add(session->evlist, evsel, 0, i,
1025 event->attr.id[i]);
Tom Zanussi2c46dbb2010-04-01 23:59:19 -05001026 }
1027
1028 perf_session__update_sample_type(session);
1029
1030 return 0;
1031}
Tom Zanussicd19a032010-04-01 23:59:20 -05001032
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001033int perf_event__synthesize_event_type(u64 event_id, char *name,
1034 perf_event__handler_t process,
1035 struct perf_session *session)
Tom Zanussicd19a032010-04-01 23:59:20 -05001036{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001037 union perf_event ev;
Tom Zanussicd19a032010-04-01 23:59:20 -05001038 size_t size = 0;
1039 int err = 0;
1040
1041 memset(&ev, 0, sizeof(ev));
1042
1043 ev.event_type.event_type.event_id = event_id;
1044 memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME);
1045 strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1);
1046
1047 ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE;
1048 size = strlen(name);
1049 size = ALIGN(size, sizeof(u64));
1050 ev.event_type.header.size = sizeof(ev.event_type) -
1051 (sizeof(ev.event_type.event_type.name) - size);
1052
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001053 err = process(&ev, NULL, session);
Tom Zanussicd19a032010-04-01 23:59:20 -05001054
1055 return err;
1056}
1057
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001058int perf_event__synthesize_event_types(perf_event__handler_t process,
1059 struct perf_session *session)
Tom Zanussicd19a032010-04-01 23:59:20 -05001060{
1061 struct perf_trace_event_type *type;
1062 int i, err = 0;
1063
1064 for (i = 0; i < event_count; i++) {
1065 type = &events[i];
1066
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001067 err = perf_event__synthesize_event_type(type->event_id,
1068 type->name, process,
1069 session);
Tom Zanussicd19a032010-04-01 23:59:20 -05001070 if (err) {
1071 pr_debug("failed to create perf header event type\n");
1072 return err;
1073 }
1074 }
1075
1076 return err;
1077}
1078
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001079int perf_event__process_event_type(union perf_event *event,
1080 struct perf_session *session __unused)
Tom Zanussicd19a032010-04-01 23:59:20 -05001081{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001082 if (perf_header__push_event(event->event_type.event_type.event_id,
1083 event->event_type.event_type.name) < 0)
Tom Zanussicd19a032010-04-01 23:59:20 -05001084 return -ENOMEM;
1085
1086 return 0;
1087}
Tom Zanussi92155452010-04-01 23:59:21 -05001088
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001089int perf_event__synthesize_tracing_data(int fd, struct perf_evlist *evlist,
1090 perf_event__handler_t process,
Tom Zanussi92155452010-04-01 23:59:21 -05001091 struct perf_session *session __unused)
1092{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001093 union perf_event ev;
Tom Zanussi92155452010-04-01 23:59:21 -05001094 ssize_t size = 0, aligned_size = 0, padding;
Kyle McMartinfb7d0b32011-01-24 11:13:04 -05001095 int err __used = 0;
Tom Zanussi92155452010-04-01 23:59:21 -05001096
1097 memset(&ev, 0, sizeof(ev));
1098
1099 ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA;
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001100 size = read_tracing_data_size(fd, &evlist->entries);
Tom Zanussi92155452010-04-01 23:59:21 -05001101 if (size <= 0)
1102 return size;
1103 aligned_size = ALIGN(size, sizeof(u64));
1104 padding = aligned_size - size;
1105 ev.tracing_data.header.size = sizeof(ev.tracing_data);
1106 ev.tracing_data.size = aligned_size;
1107
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001108 process(&ev, NULL, session);
Tom Zanussi92155452010-04-01 23:59:21 -05001109
Arnaldo Carvalho de Melo361c99a2011-01-11 20:56:53 -02001110 err = read_tracing_data(fd, &evlist->entries);
Tom Zanussi92155452010-04-01 23:59:21 -05001111 write_padded(fd, NULL, 0, padding);
1112
1113 return aligned_size;
1114}
1115
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001116int perf_event__process_tracing_data(union perf_event *event,
1117 struct perf_session *session)
Tom Zanussi92155452010-04-01 23:59:21 -05001118{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001119 ssize_t size_read, padding, size = event->tracing_data.size;
Tom Zanussi92155452010-04-01 23:59:21 -05001120 off_t offset = lseek(session->fd, 0, SEEK_CUR);
1121 char buf[BUFSIZ];
1122
1123 /* setup for reading amidst mmap */
1124 lseek(session->fd, offset + sizeof(struct tracing_data_event),
1125 SEEK_SET);
1126
Tom Zanussi454c4072010-05-01 01:41:20 -05001127 size_read = trace_report(session->fd, session->repipe);
Tom Zanussi92155452010-04-01 23:59:21 -05001128
1129 padding = ALIGN(size_read, sizeof(u64)) - size_read;
1130
1131 if (read(session->fd, buf, padding) < 0)
1132 die("reading input file");
Tom Zanussi454c4072010-05-01 01:41:20 -05001133 if (session->repipe) {
1134 int retw = write(STDOUT_FILENO, buf, padding);
1135 if (retw <= 0 || retw != padding)
1136 die("repiping tracing data padding");
1137 }
Tom Zanussi92155452010-04-01 23:59:21 -05001138
1139 if (size_read + padding != size)
1140 die("tracing data size mismatch");
1141
1142 return size_read + padding;
1143}
Tom Zanussic7929e42010-04-01 23:59:22 -05001144
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001145int perf_event__synthesize_build_id(struct dso *pos, u16 misc,
1146 perf_event__handler_t process,
1147 struct machine *machine,
1148 struct perf_session *session)
Tom Zanussic7929e42010-04-01 23:59:22 -05001149{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001150 union perf_event ev;
Tom Zanussic7929e42010-04-01 23:59:22 -05001151 size_t len;
1152 int err = 0;
1153
1154 if (!pos->hit)
1155 return err;
1156
1157 memset(&ev, 0, sizeof(ev));
1158
1159 len = pos->long_name_len + 1;
1160 len = ALIGN(len, NAME_ALIGN);
1161 memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id));
1162 ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID;
1163 ev.build_id.header.misc = misc;
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -03001164 ev.build_id.pid = machine->pid;
Tom Zanussic7929e42010-04-01 23:59:22 -05001165 ev.build_id.header.size = sizeof(ev.build_id) + len;
1166 memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len);
1167
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001168 err = process(&ev, NULL, session);
Tom Zanussic7929e42010-04-01 23:59:22 -05001169
1170 return err;
1171}
1172
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001173int perf_event__process_build_id(union perf_event *event,
1174 struct perf_session *session)
Tom Zanussic7929e42010-04-01 23:59:22 -05001175{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001176 __event_process_build_id(&event->build_id,
1177 event->build_id.filename,
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001178 session);
Tom Zanussic7929e42010-04-01 23:59:22 -05001179 return 0;
1180}
Stephane Eraniana1ac1d32010-06-17 11:39:01 +02001181
1182void disable_buildid_cache(void)
1183{
1184 no_buildid_cache = true;
1185}