blob: 568b750c01f60b3d81cda29966ed40534a7bc8e1 [file] [log] [blame]
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02001#include <linux/kernel.h>
Robert Richter4e319022013-06-11 17:29:18 +02002#include <traceevent/event-parse.h>
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02003
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02004#include <byteswap.h>
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02005#include <unistd.h>
6#include <sys/types.h>
Arnaldo Carvalho de Meloa41794c2010-05-18 18:29:23 -03007#include <sys/mman.h>
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02008
Arnaldo Carvalho de Meloe248de32011-03-05 21:40:06 -03009#include "evlist.h"
10#include "evsel.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020011#include "session.h"
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020012#include "tool.h"
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -020013#include "sort.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020014#include "util.h"
Anton Blanchard5d67be92011-07-04 21:57:50 +100015#include "cpumap.h"
Jiri Olsa0f6a3012012-08-07 15:20:45 +020016#include "perf_regs.h"
Jiri Olsa7dbf4dc2012-09-10 18:50:19 +020017#include "vdso.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020018
19static int perf_session__open(struct perf_session *self, bool force)
20{
21 struct stat input_stat;
22
Tom Zanussi8dc58102010-04-01 23:59:15 -050023 if (!strcmp(self->filename, "-")) {
24 self->fd_pipe = true;
25 self->fd = STDIN_FILENO;
26
Jiri Olsad4339562013-07-17 19:49:41 +020027 if (perf_session__read_header(self) < 0)
Stephane Eranian69996df2012-02-09 23:21:06 +010028 pr_err("incompatible file format (rerun with -v to learn more)");
Tom Zanussi8dc58102010-04-01 23:59:15 -050029
30 return 0;
31 }
32
Xiao Guangrongf887f302010-02-04 16:46:42 +080033 self->fd = open(self->filename, O_RDONLY);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020034 if (self->fd < 0) {
Andy Isaacson0f2c3de2010-06-11 20:36:15 -070035 int err = errno;
36
37 pr_err("failed to open %s: %s", self->filename, strerror(err));
38 if (err == ENOENT && !strcmp(self->filename, "perf.data"))
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020039 pr_err(" (try 'perf record' first)");
40 pr_err("\n");
41 return -errno;
42 }
43
44 if (fstat(self->fd, &input_stat) < 0)
45 goto out_close;
46
47 if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) {
48 pr_err("file %s not owned by current user or root\n",
49 self->filename);
50 goto out_close;
51 }
52
53 if (!input_stat.st_size) {
54 pr_info("zero-sized file (%s), nothing to do!\n",
55 self->filename);
56 goto out_close;
57 }
58
Jiri Olsad4339562013-07-17 19:49:41 +020059 if (perf_session__read_header(self) < 0) {
Stephane Eranian69996df2012-02-09 23:21:06 +010060 pr_err("incompatible file format (rerun with -v to learn more)");
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020061 goto out_close;
62 }
63
Arnaldo Carvalho de Meloc2a70652011-06-02 11:04:54 -030064 if (!perf_evlist__valid_sample_type(self->evlist)) {
65 pr_err("non matching sample_type");
66 goto out_close;
67 }
68
69 if (!perf_evlist__valid_sample_id_all(self->evlist)) {
70 pr_err("non matching sample_id_all");
71 goto out_close;
72 }
73
Jiri Olsa9ede4732012-10-10 17:38:13 +020074 if (!perf_evlist__valid_read_format(self->evlist)) {
75 pr_err("non matching read_format");
76 goto out_close;
77 }
78
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020079 self->size = input_stat.st_size;
80 return 0;
81
82out_close:
83 close(self->fd);
84 self->fd = -1;
85 return -1;
86}
87
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -030088void perf_session__set_id_hdr_size(struct perf_session *session)
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -020089{
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -030090 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
91
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -030092 machines__set_id_hdr_size(&session->machines, id_hdr_size);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -020093}
94
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080095int perf_session__create_kernel_maps(struct perf_session *self)
96{
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -030097 int ret = machine__create_kernel_maps(&self->machines.host);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080098
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080099 if (ret >= 0)
Arnaldo Carvalho de Melod118f8b2010-05-10 12:51:05 -0300100 ret = machines__create_guest_kernel_maps(&self->machines);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800101 return ret;
102}
103
Arnaldo Carvalho de Melo076c6e452010-08-02 18:18:28 -0300104static void perf_session__destroy_kernel_maps(struct perf_session *self)
105{
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -0300106 machines__destroy_kernel_maps(&self->machines);
Arnaldo Carvalho de Melo076c6e452010-08-02 18:18:28 -0300107}
108
Ian Munsie21ef97f2010-12-10 14:09:16 +1100109struct perf_session *perf_session__new(const char *filename, int mode,
110 bool force, bool repipe,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200111 struct perf_tool *tool)
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200112{
Robert Richterefad1412011-12-07 10:02:54 +0100113 struct perf_session *self;
114 struct stat st;
115 size_t len;
116
117 if (!filename || !strlen(filename)) {
118 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
119 filename = "-";
120 else
121 filename = "perf.data";
122 }
123
124 len = strlen(filename);
125 self = zalloc(sizeof(*self) + len);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200126
127 if (self == NULL)
128 goto out;
129
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200130 memcpy(self->filename, filename, len);
Tom Zanussi454c4072010-05-01 01:41:20 -0500131 self->repipe = repipe;
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000132 INIT_LIST_HEAD(&self->ordered_samples.samples);
Thomas Gleixner020bb752010-11-30 17:49:53 +0000133 INIT_LIST_HEAD(&self->ordered_samples.sample_cache);
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000134 INIT_LIST_HEAD(&self->ordered_samples.to_free);
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -0300135 machines__init(&self->machines);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200136
Arnaldo Carvalho de Melo64abebf72010-01-27 21:05:52 -0200137 if (mode == O_RDONLY) {
138 if (perf_session__open(self, force) < 0)
139 goto out_delete;
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -0300140 perf_session__set_id_hdr_size(self);
Arnaldo Carvalho de Melo64abebf72010-01-27 21:05:52 -0200141 } else if (mode == O_WRONLY) {
142 /*
143 * In O_RDONLY mode this will be performed when reading the
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200144 * kernel MMAP event, in perf_event__process_mmap().
Arnaldo Carvalho de Melo64abebf72010-01-27 21:05:52 -0200145 */
146 if (perf_session__create_kernel_maps(self) < 0)
147 goto out_delete;
148 }
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -0200149
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200150 if (tool && tool->ordering_requires_timestamps &&
Arnaldo Carvalho de Melo5e562472012-08-01 19:25:26 -0300151 tool->ordered_samples && !perf_evlist__sample_id_all(self->evlist)) {
Ian Munsie21ef97f2010-12-10 14:09:16 +1100152 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200153 tool->ordered_samples = false;
Ian Munsie21ef97f2010-12-10 14:09:16 +1100154 }
155
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200156out:
157 return self;
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200158out_delete:
159 perf_session__delete(self);
160 return NULL;
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200161}
162
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200163static void perf_session__delete_dead_threads(struct perf_session *session)
164{
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -0300165 machine__delete_dead_threads(&session->machines.host);
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200166}
167
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200168static void perf_session__delete_threads(struct perf_session *session)
169{
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -0300170 machine__delete_threads(&session->machines.host);
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200171}
172
Namhyung Kim03cd2092012-11-21 13:43:19 +0900173static void perf_session_env__delete(struct perf_session_env *env)
174{
175 free(env->hostname);
176 free(env->os_release);
177 free(env->version);
178 free(env->arch);
179 free(env->cpu_desc);
180 free(env->cpuid);
181
182 free(env->cmdline);
183 free(env->sibling_cores);
184 free(env->sibling_threads);
185 free(env->numa_nodes);
186 free(env->pmu_mappings);
187}
188
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200189void perf_session__delete(struct perf_session *self)
190{
Arnaldo Carvalho de Melo076c6e452010-08-02 18:18:28 -0300191 perf_session__destroy_kernel_maps(self);
Arnaldo Carvalho de Melod65a4582010-07-30 18:31:28 -0300192 perf_session__delete_dead_threads(self);
193 perf_session__delete_threads(self);
Namhyung Kim03cd2092012-11-21 13:43:19 +0900194 perf_session_env__delete(&self->header.env);
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -0300195 machines__exit(&self->machines);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200196 close(self->fd);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200197 free(self);
Jiri Olsa7dbf4dc2012-09-10 18:50:19 +0200198 vdso__exit();
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200199}
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200200
Adrian Hunter47c3d102013-07-04 16:20:21 +0300201static int process_event_synth_tracing_data_stub(struct perf_tool *tool
202 __maybe_unused,
203 union perf_event *event
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300204 __maybe_unused,
205 struct perf_session *session
206 __maybe_unused)
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200207{
208 dump_printf(": unhandled!\n");
209 return 0;
210}
211
Adrian Hunter47c3d102013-07-04 16:20:21 +0300212static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
213 union perf_event *event __maybe_unused,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300214 struct perf_evlist **pevlist
215 __maybe_unused)
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -0200216{
217 dump_printf(": unhandled!\n");
218 return 0;
219}
220
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300221static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
222 union perf_event *event __maybe_unused,
223 struct perf_sample *sample __maybe_unused,
224 struct perf_evsel *evsel __maybe_unused,
225 struct machine *machine __maybe_unused)
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300226{
227 dump_printf(": unhandled!\n");
228 return 0;
229}
230
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300231static int process_event_stub(struct perf_tool *tool __maybe_unused,
232 union perf_event *event __maybe_unused,
233 struct perf_sample *sample __maybe_unused,
234 struct machine *machine __maybe_unused)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200235{
236 dump_printf(": unhandled!\n");
237 return 0;
238}
239
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300240static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
241 union perf_event *event __maybe_unused,
242 struct perf_session *perf_session
243 __maybe_unused)
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200244{
245 dump_printf(": unhandled!\n");
246 return 0;
247}
248
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200249static int process_finished_round(struct perf_tool *tool,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200250 union perf_event *event,
251 struct perf_session *session);
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200252
David Ahern9c501402013-08-02 14:05:41 -0600253void perf_tool__fill_defaults(struct perf_tool *tool)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200254{
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200255 if (tool->sample == NULL)
256 tool->sample = process_event_sample_stub;
257 if (tool->mmap == NULL)
258 tool->mmap = process_event_stub;
David Ahern6adb0b02013-09-22 19:44:59 -0600259 if (tool->mmap2 == NULL)
260 tool->mmap2 = process_event_stub;
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200261 if (tool->comm == NULL)
262 tool->comm = process_event_stub;
263 if (tool->fork == NULL)
264 tool->fork = process_event_stub;
265 if (tool->exit == NULL)
266 tool->exit = process_event_stub;
267 if (tool->lost == NULL)
268 tool->lost = perf_event__process_lost;
269 if (tool->read == NULL)
270 tool->read = process_event_sample_stub;
271 if (tool->throttle == NULL)
272 tool->throttle = process_event_stub;
273 if (tool->unthrottle == NULL)
274 tool->unthrottle = process_event_stub;
275 if (tool->attr == NULL)
276 tool->attr = process_event_synth_attr_stub;
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200277 if (tool->tracing_data == NULL)
278 tool->tracing_data = process_event_synth_tracing_data_stub;
279 if (tool->build_id == NULL)
280 tool->build_id = process_finished_round_stub;
281 if (tool->finished_round == NULL) {
282 if (tool->ordered_samples)
283 tool->finished_round = process_finished_round;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200284 else
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200285 tool->finished_round = process_finished_round_stub;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200286 }
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200287}
David Ahern80c01202012-06-08 11:47:51 -0300288
289void mem_bswap_32(void *src, int byte_size)
290{
291 u32 *m = src;
292 while (byte_size > 0) {
293 *m = bswap_32(*m);
294 byte_size -= sizeof(u32);
295 ++m;
296 }
297}
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200298
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200299void mem_bswap_64(void *src, int byte_size)
300{
301 u64 *m = src;
302
303 while (byte_size > 0) {
304 *m = bswap_64(*m);
305 byte_size -= sizeof(u64);
306 ++m;
307 }
308}
309
Jiri Olsa268fb202012-05-30 14:23:43 +0200310static void swap_sample_id_all(union perf_event *event, void *data)
311{
312 void *end = (void *) event + event->header.size;
313 int size = end - data;
314
315 BUG_ON(size % sizeof(u64));
316 mem_bswap_64(data, size);
317}
318
319static void perf_event__all64_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300320 bool sample_id_all __maybe_unused)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200321{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200322 struct perf_event_header *hdr = &event->header;
323 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200324}
325
Jiri Olsa268fb202012-05-30 14:23:43 +0200326static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200327{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200328 event->comm.pid = bswap_32(event->comm.pid);
329 event->comm.tid = bswap_32(event->comm.tid);
Jiri Olsa268fb202012-05-30 14:23:43 +0200330
331 if (sample_id_all) {
332 void *data = &event->comm.comm;
333
Irina Tirdea9ac3e482012-09-11 01:15:01 +0300334 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
Jiri Olsa268fb202012-05-30 14:23:43 +0200335 swap_sample_id_all(event, data);
336 }
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200337}
338
Jiri Olsa268fb202012-05-30 14:23:43 +0200339static void perf_event__mmap_swap(union perf_event *event,
340 bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200341{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200342 event->mmap.pid = bswap_32(event->mmap.pid);
343 event->mmap.tid = bswap_32(event->mmap.tid);
344 event->mmap.start = bswap_64(event->mmap.start);
345 event->mmap.len = bswap_64(event->mmap.len);
346 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
Jiri Olsa268fb202012-05-30 14:23:43 +0200347
348 if (sample_id_all) {
349 void *data = &event->mmap.filename;
350
Irina Tirdea9ac3e482012-09-11 01:15:01 +0300351 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
Jiri Olsa268fb202012-05-30 14:23:43 +0200352 swap_sample_id_all(event, data);
353 }
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200354}
355
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200356static void perf_event__mmap2_swap(union perf_event *event,
357 bool sample_id_all)
358{
359 event->mmap2.pid = bswap_32(event->mmap2.pid);
360 event->mmap2.tid = bswap_32(event->mmap2.tid);
361 event->mmap2.start = bswap_64(event->mmap2.start);
362 event->mmap2.len = bswap_64(event->mmap2.len);
363 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
364 event->mmap2.maj = bswap_32(event->mmap2.maj);
365 event->mmap2.min = bswap_32(event->mmap2.min);
366 event->mmap2.ino = bswap_64(event->mmap2.ino);
367
368 if (sample_id_all) {
369 void *data = &event->mmap2.filename;
370
371 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
372 swap_sample_id_all(event, data);
373 }
374}
Jiri Olsa268fb202012-05-30 14:23:43 +0200375static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200376{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200377 event->fork.pid = bswap_32(event->fork.pid);
378 event->fork.tid = bswap_32(event->fork.tid);
379 event->fork.ppid = bswap_32(event->fork.ppid);
380 event->fork.ptid = bswap_32(event->fork.ptid);
381 event->fork.time = bswap_64(event->fork.time);
Jiri Olsa268fb202012-05-30 14:23:43 +0200382
383 if (sample_id_all)
384 swap_sample_id_all(event, &event->fork + 1);
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200385}
386
Jiri Olsa268fb202012-05-30 14:23:43 +0200387static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200388{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200389 event->read.pid = bswap_32(event->read.pid);
390 event->read.tid = bswap_32(event->read.tid);
391 event->read.value = bswap_64(event->read.value);
392 event->read.time_enabled = bswap_64(event->read.time_enabled);
393 event->read.time_running = bswap_64(event->read.time_running);
394 event->read.id = bswap_64(event->read.id);
Jiri Olsa268fb202012-05-30 14:23:43 +0200395
396 if (sample_id_all)
397 swap_sample_id_all(event, &event->read + 1);
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200398}
399
Jiri Olsae108c662012-05-16 08:59:03 +0200400static u8 revbyte(u8 b)
401{
402 int rev = (b >> 4) | ((b & 0xf) << 4);
403 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
404 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
405 return (u8) rev;
406}
407
408/*
409 * XXX this is hack in attempt to carry flags bitfield
410 * throught endian village. ABI says:
411 *
412 * Bit-fields are allocated from right to left (least to most significant)
413 * on little-endian implementations and from left to right (most to least
414 * significant) on big-endian implementations.
415 *
416 * The above seems to be byte specific, so we need to reverse each
417 * byte of the bitfield. 'Internet' also says this might be implementation
418 * specific and we probably need proper fix and carry perf_event_attr
419 * bitfield flags in separate data file FEAT_ section. Thought this seems
420 * to work for now.
421 */
422static void swap_bitfield(u8 *p, unsigned len)
423{
424 unsigned i;
425
426 for (i = 0; i < len; i++) {
427 *p = revbyte(*p);
428 p++;
429 }
430}
431
David Aherneda39132011-07-15 12:34:09 -0600432/* exported for swapping attributes in file header */
433void perf_event__attr_swap(struct perf_event_attr *attr)
434{
435 attr->type = bswap_32(attr->type);
436 attr->size = bswap_32(attr->size);
437 attr->config = bswap_64(attr->config);
438 attr->sample_period = bswap_64(attr->sample_period);
439 attr->sample_type = bswap_64(attr->sample_type);
440 attr->read_format = bswap_64(attr->read_format);
441 attr->wakeup_events = bswap_32(attr->wakeup_events);
442 attr->bp_type = bswap_32(attr->bp_type);
443 attr->bp_addr = bswap_64(attr->bp_addr);
444 attr->bp_len = bswap_64(attr->bp_len);
Jiri Olsae108c662012-05-16 08:59:03 +0200445
446 swap_bitfield((u8 *) (&attr->read_format + 1), sizeof(u64));
David Aherneda39132011-07-15 12:34:09 -0600447}
448
Jiri Olsa268fb202012-05-30 14:23:43 +0200449static void perf_event__hdr_attr_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300450 bool sample_id_all __maybe_unused)
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500451{
452 size_t size;
453
David Aherneda39132011-07-15 12:34:09 -0600454 perf_event__attr_swap(&event->attr.attr);
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500455
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200456 size = event->header.size;
457 size -= (void *)&event->attr.id - (void *)event;
458 mem_bswap_64(event->attr.id, size);
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500459}
460
Jiri Olsa268fb202012-05-30 14:23:43 +0200461static void perf_event__event_type_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300462 bool sample_id_all __maybe_unused)
Tom Zanussicd19a032010-04-01 23:59:20 -0500463{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200464 event->event_type.event_type.event_id =
465 bswap_64(event->event_type.event_type.event_id);
Tom Zanussicd19a032010-04-01 23:59:20 -0500466}
467
Jiri Olsa268fb202012-05-30 14:23:43 +0200468static void perf_event__tracing_data_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300469 bool sample_id_all __maybe_unused)
Tom Zanussi92155452010-04-01 23:59:21 -0500470{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200471 event->tracing_data.size = bswap_32(event->tracing_data.size);
Tom Zanussi92155452010-04-01 23:59:21 -0500472}
473
Jiri Olsa268fb202012-05-30 14:23:43 +0200474typedef void (*perf_event__swap_op)(union perf_event *event,
475 bool sample_id_all);
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200476
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200477static perf_event__swap_op perf_event__swap_ops[] = {
478 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200479 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200480 [PERF_RECORD_COMM] = perf_event__comm_swap,
481 [PERF_RECORD_FORK] = perf_event__task_swap,
482 [PERF_RECORD_EXIT] = perf_event__task_swap,
483 [PERF_RECORD_LOST] = perf_event__all64_swap,
484 [PERF_RECORD_READ] = perf_event__read_swap,
485 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
David Aherneda39132011-07-15 12:34:09 -0600486 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200487 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
488 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
489 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
490 [PERF_RECORD_HEADER_MAX] = NULL,
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200491};
492
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200493struct sample_queue {
494 u64 timestamp;
Thomas Gleixnere4c2df12010-12-07 12:48:50 +0000495 u64 file_offset;
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200496 union perf_event *event;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200497 struct list_head list;
498};
499
Thomas Gleixner020bb752010-11-30 17:49:53 +0000500static void perf_session_free_sample_buffers(struct perf_session *session)
501{
502 struct ordered_samples *os = &session->ordered_samples;
503
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000504 while (!list_empty(&os->to_free)) {
Thomas Gleixner020bb752010-11-30 17:49:53 +0000505 struct sample_queue *sq;
506
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000507 sq = list_entry(os->to_free.next, struct sample_queue, list);
Thomas Gleixner020bb752010-11-30 17:49:53 +0000508 list_del(&sq->list);
509 free(sq);
510 }
511}
512
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100513static int perf_session_deliver_event(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200514 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200515 struct perf_sample *sample,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200516 struct perf_tool *tool,
Thomas Gleixnerf74725d2010-12-07 12:48:53 +0000517 u64 file_offset);
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100518
David Ahernd25380cd2012-08-26 12:24:41 -0600519static int flush_sample_queue(struct perf_session *s,
David Ahern9c501402013-08-02 14:05:41 -0600520 struct perf_tool *tool)
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200521{
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000522 struct ordered_samples *os = &s->ordered_samples;
523 struct list_head *head = &os->samples;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200524 struct sample_queue *tmp, *iter;
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200525 struct perf_sample sample;
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000526 u64 limit = os->next_flush;
527 u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL;
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200528 unsigned idx = 0, progress_next = os->nr_samples / 16;
Jiri Olsa526fd8d2013-09-05 11:14:50 +0200529 bool show_progress = limit == ULLONG_MAX;
Frederic Weisbecker5538bec2011-05-22 02:17:22 +0200530 int ret;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200531
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200532 if (!tool->ordered_samples || !limit)
David Ahernd25380cd2012-08-26 12:24:41 -0600533 return 0;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200534
535 list_for_each_entry_safe(iter, tmp, head, list) {
Arnaldo Carvalho de Melo33e940a2013-09-17 16:34:28 -0300536 if (session_done())
537 return 0;
538
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200539 if (iter->timestamp > limit)
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000540 break;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200541
Arnaldo Carvalho de Melo0807d2d2012-09-26 12:48:18 -0300542 ret = perf_evlist__parse_sample(s->evlist, iter->event, &sample);
Frederic Weisbecker5538bec2011-05-22 02:17:22 +0200543 if (ret)
544 pr_err("Can't parse sample, err = %d\n", ret);
David Ahernd25380cd2012-08-26 12:24:41 -0600545 else {
546 ret = perf_session_deliver_event(s, iter->event, &sample, tool,
547 iter->file_offset);
548 if (ret)
549 return ret;
550 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200551
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000552 os->last_flush = iter->timestamp;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200553 list_del(&iter->list);
Thomas Gleixner020bb752010-11-30 17:49:53 +0000554 list_add(&iter->list, &os->sample_cache);
Jiri Olsa526fd8d2013-09-05 11:14:50 +0200555 if (show_progress && (++idx >= progress_next)) {
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200556 progress_next += os->nr_samples / 16;
557 ui_progress__update(idx, os->nr_samples,
558 "Processing time ordered events...");
559 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200560 }
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000561
562 if (list_empty(head)) {
563 os->last_sample = NULL;
564 } else if (last_ts <= limit) {
565 os->last_sample =
566 list_entry(head->prev, struct sample_queue, list);
567 }
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200568
569 os->nr_samples = 0;
David Ahernd25380cd2012-08-26 12:24:41 -0600570
571 return 0;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200572}
573
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200574/*
575 * When perf record finishes a pass on every buffers, it records this pseudo
576 * event.
577 * We record the max timestamp t found in the pass n.
578 * Assuming these timestamps are monotonic across cpus, we know that if
579 * a buffer still has events with timestamps below t, they will be all
580 * available and then read in the pass n + 1.
581 * Hence when we start to read the pass n + 2, we can safely flush every
582 * events with timestamps below t.
583 *
584 * ============ PASS n =================
585 * CPU 0 | CPU 1
586 * |
587 * cnt1 timestamps | cnt2 timestamps
588 * 1 | 2
589 * 2 | 3
590 * - | 4 <--- max recorded
591 *
592 * ============ PASS n + 1 ==============
593 * CPU 0 | CPU 1
594 * |
595 * cnt1 timestamps | cnt2 timestamps
596 * 3 | 5
597 * 4 | 6
598 * 5 | 7 <---- max recorded
599 *
600 * Flush every events below timestamp 4
601 *
602 * ============ PASS n + 2 ==============
603 * CPU 0 | CPU 1
604 * |
605 * cnt1 timestamps | cnt2 timestamps
606 * 6 | 8
607 * 7 | 9
608 * - | 10
609 *
610 * Flush every events below timestamp 7
611 * etc...
612 */
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200613static int process_finished_round(struct perf_tool *tool,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300614 union perf_event *event __maybe_unused,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200615 struct perf_session *session)
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200616{
David Ahernd25380cd2012-08-26 12:24:41 -0600617 int ret = flush_sample_queue(session, tool);
618 if (!ret)
619 session->ordered_samples.next_flush = session->ordered_samples.max_timestamp;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200620
David Ahernd25380cd2012-08-26 12:24:41 -0600621 return ret;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200622}
623
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200624/* The queue is ordered by time */
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100625static void __queue_event(struct sample_queue *new, struct perf_session *s)
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200626{
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000627 struct ordered_samples *os = &s->ordered_samples;
628 struct sample_queue *sample = os->last_sample;
629 u64 timestamp = new->timestamp;
630 struct list_head *p;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200631
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200632 ++os->nr_samples;
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000633 os->last_sample = new;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200634
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000635 if (!sample) {
636 list_add(&new->list, &os->samples);
637 os->max_timestamp = timestamp;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200638 return;
639 }
640
641 /*
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000642 * last_sample might point to some random place in the list as it's
643 * the last queued event. We expect that the new event is close to
644 * this.
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200645 */
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000646 if (sample->timestamp <= timestamp) {
647 while (sample->timestamp <= timestamp) {
648 p = sample->list.next;
649 if (p == &os->samples) {
650 list_add_tail(&new->list, &os->samples);
651 os->max_timestamp = timestamp;
652 return;
653 }
654 sample = list_entry(p, struct sample_queue, list);
655 }
656 list_add_tail(&new->list, &sample->list);
657 } else {
658 while (sample->timestamp > timestamp) {
659 p = sample->list.prev;
660 if (p == &os->samples) {
661 list_add(&new->list, &os->samples);
662 return;
663 }
664 sample = list_entry(p, struct sample_queue, list);
665 }
666 list_add(&new->list, &sample->list);
667 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200668}
669
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000670#define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue))
671
David Aherne30b88a2013-08-05 21:41:33 -0400672int perf_session_queue_event(struct perf_session *s, union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200673 struct perf_sample *sample, u64 file_offset)
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200674{
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000675 struct ordered_samples *os = &s->ordered_samples;
676 struct list_head *sc = &os->sample_cache;
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200677 u64 timestamp = sample->time;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200678 struct sample_queue *new;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200679
Thomas Gleixner79a14c12010-12-07 12:48:44 +0000680 if (!timestamp || timestamp == ~0ULL)
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100681 return -ETIME;
682
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200683 if (timestamp < s->ordered_samples.last_flush) {
684 printf("Warning: Timestamp below last timeslice flush\n");
685 return -EINVAL;
686 }
687
Thomas Gleixner020bb752010-11-30 17:49:53 +0000688 if (!list_empty(sc)) {
689 new = list_entry(sc->next, struct sample_queue, list);
690 list_del(&new->list);
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000691 } else if (os->sample_buffer) {
692 new = os->sample_buffer + os->sample_buffer_idx;
693 if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER)
694 os->sample_buffer = NULL;
Thomas Gleixner020bb752010-11-30 17:49:53 +0000695 } else {
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000696 os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new));
697 if (!os->sample_buffer)
Thomas Gleixner020bb752010-11-30 17:49:53 +0000698 return -ENOMEM;
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000699 list_add(&os->sample_buffer->list, &os->to_free);
700 os->sample_buffer_idx = 2;
701 new = os->sample_buffer + 1;
Thomas Gleixner020bb752010-11-30 17:49:53 +0000702 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200703
704 new->timestamp = timestamp;
Thomas Gleixnere4c2df12010-12-07 12:48:50 +0000705 new->file_offset = file_offset;
Thomas Gleixnerfe174202010-11-30 17:49:49 +0000706 new->event = event;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200707
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100708 __queue_event(new, s);
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200709
710 return 0;
711}
712
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200713static void callchain__printf(struct perf_sample *sample)
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -0200714{
715 unsigned int i;
716
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200717 printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr);
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -0200718
719 for (i = 0; i < sample->callchain->nr; i++)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200720 printf("..... %2d: %016" PRIx64 "\n",
721 i, sample->callchain->ips[i]);
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -0200722}
723
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +0100724static void branch_stack__printf(struct perf_sample *sample)
725{
726 uint64_t i;
727
728 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
729
730 for (i = 0; i < sample->branch_stack->nr; i++)
731 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n",
732 i, sample->branch_stack->entries[i].from,
733 sample->branch_stack->entries[i].to);
734}
735
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200736static void regs_dump__printf(u64 mask, u64 *regs)
737{
738 unsigned rid, i = 0;
739
740 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
741 u64 val = regs[i++];
742
743 printf(".... %-5s 0x%" PRIx64 "\n",
744 perf_reg_name(rid), val);
745 }
746}
747
748static void regs_user__printf(struct perf_sample *sample, u64 mask)
749{
750 struct regs_dump *user_regs = &sample->user_regs;
751
752 if (user_regs->regs) {
753 printf("... user regs: mask 0x%" PRIx64 "\n", mask);
754 regs_dump__printf(mask, user_regs->regs);
755 }
756}
757
758static void stack_user__printf(struct stack_dump *dump)
759{
760 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
761 dump->size, dump->offset);
762}
763
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200764static void perf_session__print_tstamp(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200765 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200766 struct perf_sample *sample)
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200767{
Adrian Hunter75562572013-08-27 11:23:09 +0300768 u64 sample_type = __perf_evlist__combined_sample_type(session->evlist);
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300769
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200770 if (event->header.type != PERF_RECORD_SAMPLE &&
Arnaldo Carvalho de Melo5e562472012-08-01 19:25:26 -0300771 !perf_evlist__sample_id_all(session->evlist)) {
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200772 fputs("-1 -1 ", stdout);
773 return;
774 }
775
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300776 if ((sample_type & PERF_SAMPLE_CPU))
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200777 printf("%u ", sample->cpu);
778
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300779 if (sample_type & PERF_SAMPLE_TIME)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200780 printf("%" PRIu64 " ", sample->time);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200781}
782
Jiri Olsa9ede4732012-10-10 17:38:13 +0200783static void sample_read__printf(struct perf_sample *sample, u64 read_format)
784{
785 printf("... sample_read:\n");
786
787 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
788 printf("...... time enabled %016" PRIx64 "\n",
789 sample->read.time_enabled);
790
791 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
792 printf("...... time running %016" PRIx64 "\n",
793 sample->read.time_running);
794
795 if (read_format & PERF_FORMAT_GROUP) {
796 u64 i;
797
798 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
799
800 for (i = 0; i < sample->read.group.nr; i++) {
801 struct sample_read_value *value;
802
803 value = &sample->read.group.values[i];
804 printf("..... id %016" PRIx64
805 ", value %016" PRIx64 "\n",
806 value->id, value->value);
807 }
808 } else
809 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
810 sample->read.one.id, sample->read.one.value);
811}
812
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200813static void dump_event(struct perf_session *session, union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200814 u64 file_offset, struct perf_sample *sample)
Thomas Gleixner9aefcab2010-12-07 12:48:47 +0000815{
816 if (!dump_trace)
817 return;
818
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200819 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
820 file_offset, event->header.size, event->header.type);
Thomas Gleixner9aefcab2010-12-07 12:48:47 +0000821
822 trace_event(event);
823
824 if (sample)
825 perf_session__print_tstamp(session, event, sample);
826
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200827 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200828 event->header.size, perf_event__name(event->header.type));
Thomas Gleixner9aefcab2010-12-07 12:48:47 +0000829}
830
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200831static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200832 struct perf_sample *sample)
Thomas Gleixner9aefcab2010-12-07 12:48:47 +0000833{
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300834 u64 sample_type;
835
Arnaldo Carvalho de Meloddbc24b2010-12-09 12:20:20 -0200836 if (!dump_trace)
837 return;
838
David Ahern7cec0922011-05-30 13:08:23 -0600839 printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200840 event->header.misc, sample->pid, sample->tid, sample->ip,
David Ahern7cec0922011-05-30 13:08:23 -0600841 sample->period, sample->addr);
Thomas Gleixner9aefcab2010-12-07 12:48:47 +0000842
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200843 sample_type = evsel->attr.sample_type;
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300844
845 if (sample_type & PERF_SAMPLE_CALLCHAIN)
Arnaldo Carvalho de Meloddbc24b2010-12-09 12:20:20 -0200846 callchain__printf(sample);
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +0100847
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300848 if (sample_type & PERF_SAMPLE_BRANCH_STACK)
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +0100849 branch_stack__printf(sample);
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200850
851 if (sample_type & PERF_SAMPLE_REGS_USER)
852 regs_user__printf(sample, evsel->attr.sample_regs_user);
853
854 if (sample_type & PERF_SAMPLE_STACK_USER)
855 stack_user__printf(&sample->user_stack);
Andi Kleen05484292013-01-24 16:10:29 +0100856
857 if (sample_type & PERF_SAMPLE_WEIGHT)
858 printf("... weight: %" PRIu64 "\n", sample->weight);
Stephane Eranian98a3b322013-01-24 16:10:35 +0100859
860 if (sample_type & PERF_SAMPLE_DATA_SRC)
861 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
Jiri Olsa9ede4732012-10-10 17:38:13 +0200862
863 if (sample_type & PERF_SAMPLE_READ)
864 sample_read__printf(sample, evsel->attr.read_format);
Thomas Gleixner9aefcab2010-12-07 12:48:47 +0000865}
866
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200867static struct machine *
868 perf_session__find_machine_for_cpumode(struct perf_session *session,
Adrian Hunteref893252013-08-27 11:23:06 +0300869 union perf_event *event,
870 struct perf_sample *sample)
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200871{
872 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
873
David Ahern7c0f4a42012-07-20 17:25:48 -0600874 if (perf_guest &&
875 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
876 (cpumode == PERF_RECORD_MISC_GUEST_USER))) {
Nikunj A. Dadhania7fb0a5e2012-04-09 13:52:23 +0530877 u32 pid;
878
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200879 if (event->header.type == PERF_RECORD_MMAP
880 || event->header.type == PERF_RECORD_MMAP2)
Nikunj A. Dadhania7fb0a5e2012-04-09 13:52:23 +0530881 pid = event->mmap.pid;
882 else
Adrian Hunteref893252013-08-27 11:23:06 +0300883 pid = sample->pid;
Nikunj A. Dadhania7fb0a5e2012-04-09 13:52:23 +0530884
David Ahern207b5792012-07-01 16:11:37 -0600885 return perf_session__findnew_machine(session, pid);
Nikunj A. Dadhania7fb0a5e2012-04-09 13:52:23 +0530886 }
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200887
Arnaldo Carvalho de Melo34ba5122012-12-19 09:04:24 -0300888 return &session->machines.host;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200889}
890
Jiri Olsae4caec02012-10-10 18:52:24 +0200891static int deliver_sample_value(struct perf_session *session,
892 struct perf_tool *tool,
893 union perf_event *event,
894 struct perf_sample *sample,
895 struct sample_read_value *v,
896 struct machine *machine)
897{
898 struct perf_sample_id *sid;
899
900 sid = perf_evlist__id2sid(session->evlist, v->id);
901 if (sid) {
902 sample->id = v->id;
903 sample->period = v->value - sid->period;
904 sid->period = v->value;
905 }
906
907 if (!sid || sid->evsel == NULL) {
908 ++session->stats.nr_unknown_id;
909 return 0;
910 }
911
912 return tool->sample(tool, event, sample, sid->evsel, machine);
913}
914
915static int deliver_sample_group(struct perf_session *session,
916 struct perf_tool *tool,
917 union perf_event *event,
918 struct perf_sample *sample,
919 struct machine *machine)
920{
921 int ret = -EINVAL;
922 u64 i;
923
924 for (i = 0; i < sample->read.group.nr; i++) {
925 ret = deliver_sample_value(session, tool, event, sample,
926 &sample->read.group.values[i],
927 machine);
928 if (ret)
929 break;
930 }
931
932 return ret;
933}
934
935static int
936perf_session__deliver_sample(struct perf_session *session,
937 struct perf_tool *tool,
938 union perf_event *event,
939 struct perf_sample *sample,
940 struct perf_evsel *evsel,
941 struct machine *machine)
942{
943 /* We know evsel != NULL. */
944 u64 sample_type = evsel->attr.sample_type;
945 u64 read_format = evsel->attr.read_format;
946
947 /* Standard sample delievery. */
948 if (!(sample_type & PERF_SAMPLE_READ))
949 return tool->sample(tool, event, sample, evsel, machine);
950
951 /* For PERF_SAMPLE_READ we have either single or group mode. */
952 if (read_format & PERF_FORMAT_GROUP)
953 return deliver_sample_group(session, tool, event, sample,
954 machine);
955 else
956 return deliver_sample_value(session, tool, event, sample,
957 &sample->read.one, machine);
958}
959
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100960static int perf_session_deliver_event(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200961 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200962 struct perf_sample *sample,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200963 struct perf_tool *tool,
Thomas Gleixner532e7262010-12-07 12:48:55 +0000964 u64 file_offset)
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100965{
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300966 struct perf_evsel *evsel;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200967 struct machine *machine;
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300968
Thomas Gleixner532e7262010-12-07 12:48:55 +0000969 dump_event(session, event, file_offset, sample);
970
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200971 evsel = perf_evlist__id2evsel(session->evlist, sample->id);
972 if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) {
973 /*
974 * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here
975 * because the tools right now may apply filters, discarding
976 * some of the samples. For consistency, in the future we
977 * should have something like nr_filtered_samples and remove
978 * the sample->period from total_sample_period, etc, KISS for
979 * now tho.
980 *
981 * Also testing against NULL allows us to handle files without
982 * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the
983 * future probably it'll be a good idea to restrict event
984 * processing via perf_session to files with both set.
985 */
986 hists__inc_nr_events(&evsel->hists, event->header.type);
987 }
988
Adrian Hunteref893252013-08-27 11:23:06 +0300989 machine = perf_session__find_machine_for_cpumode(session, event,
990 sample);
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200991
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100992 switch (event->header.type) {
993 case PERF_RECORD_SAMPLE:
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200994 dump_sample(evsel, event, sample);
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300995 if (evsel == NULL) {
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -0300996 ++session->stats.nr_unknown_id;
Jiri Olsa67822062012-04-12 14:21:01 +0200997 return 0;
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300998 }
Joerg Roedel0c095712012-02-10 18:05:04 +0100999 if (machine == NULL) {
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001000 ++session->stats.nr_unprocessable_samples;
Jiri Olsa67822062012-04-12 14:21:01 +02001001 return 0;
Joerg Roedel0c095712012-02-10 18:05:04 +01001002 }
Jiri Olsae4caec02012-10-10 18:52:24 +02001003 return perf_session__deliver_sample(session, tool, event,
1004 sample, evsel, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001005 case PERF_RECORD_MMAP:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001006 return tool->mmap(tool, event, sample, machine);
Stephane Eranian5c5e8542013-08-21 12:10:25 +02001007 case PERF_RECORD_MMAP2:
1008 return tool->mmap2(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001009 case PERF_RECORD_COMM:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001010 return tool->comm(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001011 case PERF_RECORD_FORK:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001012 return tool->fork(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001013 case PERF_RECORD_EXIT:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001014 return tool->exit(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001015 case PERF_RECORD_LOST:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001016 if (tool->lost == perf_event__process_lost)
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001017 session->stats.total_lost += event->lost.lost;
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001018 return tool->lost(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001019 case PERF_RECORD_READ:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001020 return tool->read(tool, event, sample, evsel, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001021 case PERF_RECORD_THROTTLE:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001022 return tool->throttle(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001023 case PERF_RECORD_UNTHROTTLE:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001024 return tool->unthrottle(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001025 default:
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001026 ++session->stats.nr_unknown_events;
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001027 return -1;
1028 }
1029}
1030
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001031static int perf_session__process_user_event(struct perf_session *session, union perf_event *event,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001032 struct perf_tool *tool, u64 file_offset)
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001033{
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -02001034 int err;
1035
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001036 dump_event(session, event, file_offset, NULL);
1037
1038 /* These events are processed right away */
1039 switch (event->header.type) {
1040 case PERF_RECORD_HEADER_ATTR:
Adrian Hunter47c3d102013-07-04 16:20:21 +03001041 err = tool->attr(tool, event, &session->evlist);
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -02001042 if (err == 0)
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -03001043 perf_session__set_id_hdr_size(session);
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -02001044 return err;
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001045 case PERF_RECORD_HEADER_TRACING_DATA:
1046 /* setup for reading amidst mmap */
1047 lseek(session->fd, file_offset, SEEK_SET);
Adrian Hunter47c3d102013-07-04 16:20:21 +03001048 return tool->tracing_data(tool, event, session);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001049 case PERF_RECORD_HEADER_BUILD_ID:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001050 return tool->build_id(tool, event, session);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001051 case PERF_RECORD_FINISHED_ROUND:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001052 return tool->finished_round(tool, event, session);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001053 default:
1054 return -EINVAL;
1055 }
1056}
1057
Jiri Olsa268fb202012-05-30 14:23:43 +02001058static void event_swap(union perf_event *event, bool sample_id_all)
1059{
1060 perf_event__swap_op swap;
1061
1062 swap = perf_event__swap_ops[event->header.type];
1063 if (swap)
1064 swap(event, sample_id_all);
1065}
1066
David Aherne30b88a2013-08-05 21:41:33 -04001067static int perf_session__process_event(struct perf_session *session,
1068 union perf_event *event,
1069 struct perf_tool *tool,
1070 u64 file_offset)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001071{
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -02001072 struct perf_sample sample;
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001073 int ret;
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001074
Jiri Olsa268fb202012-05-30 14:23:43 +02001075 if (session->header.needs_swap)
Arnaldo Carvalho de Melo5e562472012-08-01 19:25:26 -03001076 event_swap(event, perf_evlist__sample_id_all(session->evlist));
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001077
Thomas Gleixner9aefcab2010-12-07 12:48:47 +00001078 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1079 return -EINVAL;
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001080
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001081 events_stats__inc(&session->stats, event->header.type);
Thomas Gleixner9aefcab2010-12-07 12:48:47 +00001082
1083 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001084 return perf_session__process_user_event(session, event, tool, file_offset);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001085
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001086 /*
1087 * For all kernel events we get the sample data
1088 */
Arnaldo Carvalho de Melo0807d2d2012-09-26 12:48:18 -03001089 ret = perf_evlist__parse_sample(session->evlist, event, &sample);
Frederic Weisbecker5538bec2011-05-22 02:17:22 +02001090 if (ret)
1091 return ret;
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001092
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001093 if (tool->ordered_samples) {
Thomas Gleixnere4c2df12010-12-07 12:48:50 +00001094 ret = perf_session_queue_event(session, event, &sample,
1095 file_offset);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001096 if (ret != -ETIME)
1097 return ret;
1098 }
1099
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001100 return perf_session_deliver_event(session, event, &sample, tool,
Thomas Gleixnerf74725d2010-12-07 12:48:53 +00001101 file_offset);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001102}
1103
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02001104void perf_event_header__bswap(struct perf_event_header *self)
1105{
1106 self->type = bswap_32(self->type);
1107 self->misc = bswap_16(self->misc);
1108 self->size = bswap_16(self->size);
1109}
1110
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -02001111struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1112{
Adrian Hunter314add62013-08-27 11:23:03 +03001113 return machine__findnew_thread(&session->machines.host, 0, pid);
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -02001114}
1115
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001116static struct thread *perf_session__register_idle_thread(struct perf_session *self)
1117{
1118 struct thread *thread = perf_session__findnew(self, 0);
1119
1120 if (thread == NULL || thread__set_comm(thread, "swapper")) {
1121 pr_err("problem inserting idle task.\n");
1122 thread = NULL;
1123 }
1124
1125 return thread;
1126}
1127
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001128static void perf_session__warn_about_errors(const struct perf_session *session,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001129 const struct perf_tool *tool)
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001130{
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001131 if (tool->lost == perf_event__process_lost &&
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001132 session->stats.nr_events[PERF_RECORD_LOST] != 0) {
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -02001133 ui__warning("Processed %d events and lost %d chunks!\n\n"
1134 "Check IO/CPU overload!\n\n",
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001135 session->stats.nr_events[0],
1136 session->stats.nr_events[PERF_RECORD_LOST]);
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001137 }
1138
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001139 if (session->stats.nr_unknown_events != 0) {
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001140 ui__warning("Found %u unknown events!\n\n"
1141 "Is this an older tool processing a perf.data "
1142 "file generated by a more recent tool?\n\n"
1143 "If that is not the case, consider "
1144 "reporting to linux-kernel@vger.kernel.org.\n\n",
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001145 session->stats.nr_unknown_events);
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001146 }
1147
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001148 if (session->stats.nr_unknown_id != 0) {
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001149 ui__warning("%u samples with id not present in the header\n",
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001150 session->stats.nr_unknown_id);
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001151 }
1152
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001153 if (session->stats.nr_invalid_chains != 0) {
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001154 ui__warning("Found invalid callchains!\n\n"
1155 "%u out of %u events were discarded for this reason.\n\n"
1156 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001157 session->stats.nr_invalid_chains,
1158 session->stats.nr_events[PERF_RECORD_SAMPLE]);
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001159 }
Joerg Roedel0c095712012-02-10 18:05:04 +01001160
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001161 if (session->stats.nr_unprocessable_samples != 0) {
Joerg Roedel0c095712012-02-10 18:05:04 +01001162 ui__warning("%u unprocessable samples recorded.\n"
1163 "Do you have a KVM guest running and not using 'perf kvm'?\n",
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001164 session->stats.nr_unprocessable_samples);
Joerg Roedel0c095712012-02-10 18:05:04 +01001165 }
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001166}
1167
Tom Zanussi8dc58102010-04-01 23:59:15 -05001168volatile int session_done;
1169
1170static int __perf_session__process_pipe_events(struct perf_session *self,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001171 struct perf_tool *tool)
Tom Zanussi8dc58102010-04-01 23:59:15 -05001172{
Stephane Eranian444d2862012-05-15 13:28:12 +02001173 union perf_event *event;
1174 uint32_t size, cur_size = 0;
1175 void *buf = NULL;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001176 int skip = 0;
1177 u64 head;
1178 int err;
1179 void *p;
1180
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001181 perf_tool__fill_defaults(tool);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001182
1183 head = 0;
Stephane Eranian444d2862012-05-15 13:28:12 +02001184 cur_size = sizeof(union perf_event);
1185
1186 buf = malloc(cur_size);
1187 if (!buf)
1188 return -errno;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001189more:
Stephane Eranian444d2862012-05-15 13:28:12 +02001190 event = buf;
1191 err = readn(self->fd, event, sizeof(struct perf_event_header));
Tom Zanussi8dc58102010-04-01 23:59:15 -05001192 if (err <= 0) {
1193 if (err == 0)
1194 goto done;
1195
1196 pr_err("failed to read event header\n");
1197 goto out_err;
1198 }
1199
1200 if (self->header.needs_swap)
Stephane Eranian444d2862012-05-15 13:28:12 +02001201 perf_event_header__bswap(&event->header);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001202
Stephane Eranian444d2862012-05-15 13:28:12 +02001203 size = event->header.size;
Adrian Hunter27389d72013-07-04 16:20:27 +03001204 if (size < sizeof(struct perf_event_header)) {
1205 pr_err("bad event header size\n");
1206 goto out_err;
1207 }
Tom Zanussi8dc58102010-04-01 23:59:15 -05001208
Stephane Eranian444d2862012-05-15 13:28:12 +02001209 if (size > cur_size) {
1210 void *new = realloc(buf, size);
1211 if (!new) {
1212 pr_err("failed to allocate memory to read event\n");
1213 goto out_err;
1214 }
1215 buf = new;
1216 cur_size = size;
1217 event = buf;
1218 }
1219 p = event;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001220 p += sizeof(struct perf_event_header);
1221
Tom Zanussi794e43b2010-05-05 00:27:40 -05001222 if (size - sizeof(struct perf_event_header)) {
Arnaldo Carvalho de Melo1e7972c2011-01-03 16:50:55 -02001223 err = readn(self->fd, p, size - sizeof(struct perf_event_header));
Tom Zanussi794e43b2010-05-05 00:27:40 -05001224 if (err <= 0) {
1225 if (err == 0) {
1226 pr_err("unexpected end of event stream\n");
1227 goto done;
1228 }
Tom Zanussi8dc58102010-04-01 23:59:15 -05001229
Tom Zanussi794e43b2010-05-05 00:27:40 -05001230 pr_err("failed to read event data\n");
1231 goto out_err;
1232 }
Tom Zanussi8dc58102010-04-01 23:59:15 -05001233 }
1234
Stephane Eranian444d2862012-05-15 13:28:12 +02001235 if ((skip = perf_session__process_event(self, event, tool, head)) < 0) {
Jiri Olsa9389a462012-04-16 20:42:51 +02001236 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
Stephane Eranian444d2862012-05-15 13:28:12 +02001237 head, event->header.size, event->header.type);
Jiri Olsa9389a462012-04-16 20:42:51 +02001238 err = -EINVAL;
1239 goto out_err;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001240 }
1241
1242 head += size;
1243
Tom Zanussi8dc58102010-04-01 23:59:15 -05001244 if (skip > 0)
1245 head += skip;
1246
1247 if (!session_done())
1248 goto more;
1249done:
1250 err = 0;
1251out_err:
Stephane Eranian444d2862012-05-15 13:28:12 +02001252 free(buf);
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001253 perf_session__warn_about_errors(self, tool);
Thomas Gleixner020bb752010-11-30 17:49:53 +00001254 perf_session_free_sample_buffers(self);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001255 return err;
1256}
1257
Frederic Weisbecker998bedc2011-05-23 13:06:28 +02001258static union perf_event *
1259fetch_mmaped_event(struct perf_session *session,
1260 u64 head, size_t mmap_size, char *buf)
1261{
1262 union perf_event *event;
1263
1264 /*
1265 * Ensure we have enough space remaining to read
1266 * the size of the event in the headers.
1267 */
1268 if (head + sizeof(event->header) > mmap_size)
1269 return NULL;
1270
1271 event = (union perf_event *)(buf + head);
1272
1273 if (session->header.needs_swap)
1274 perf_event_header__bswap(&event->header);
1275
Adrian Hunter27389d72013-07-04 16:20:27 +03001276 if (head + event->header.size > mmap_size) {
1277 /* We're not fetching the event so swap back again */
1278 if (session->header.needs_swap)
1279 perf_event_header__bswap(&event->header);
Frederic Weisbecker998bedc2011-05-23 13:06:28 +02001280 return NULL;
Adrian Hunter27389d72013-07-04 16:20:27 +03001281 }
Frederic Weisbecker998bedc2011-05-23 13:06:28 +02001282
1283 return event;
1284}
1285
David Miller35d48dd2012-11-10 14:12:19 -05001286/*
1287 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1288 * slices. On 32bit we use 32MB.
1289 */
1290#if BITS_PER_LONG == 64
1291#define MMAP_SIZE ULLONG_MAX
1292#define NUM_MMAPS 1
1293#else
1294#define MMAP_SIZE (32 * 1024 * 1024ULL)
1295#define NUM_MMAPS 128
1296#endif
1297
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001298int __perf_session__process_events(struct perf_session *session,
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001299 u64 data_offset, u64 data_size,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001300 u64 file_size, struct perf_tool *tool)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001301{
Thomas Gleixner55b44622010-11-30 17:49:46 +00001302 u64 head, page_offset, file_offset, file_pos, progress_next;
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001303 int err, mmap_prot, mmap_flags, map_idx = 0;
Arnaldo Carvalho de Melo0c1fe6b2012-10-06 14:57:10 -03001304 size_t mmap_size;
David Miller35d48dd2012-11-10 14:12:19 -05001305 char *buf, *mmaps[NUM_MMAPS];
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001306 union perf_event *event;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001307 uint32_t size;
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001308
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001309 perf_tool__fill_defaults(tool);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001310
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001311 page_offset = page_size * (data_offset / page_size);
1312 file_offset = page_offset;
1313 head = data_offset - page_offset;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001314
Namhyung Kimb314e5c2013-09-30 17:19:48 +09001315 if (data_size && (data_offset + data_size < file_size))
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001316 file_size = data_offset + data_size;
1317
Thomas Gleixner55b44622010-11-30 17:49:46 +00001318 progress_next = file_size / 16;
Thomas Gleixner55b44622010-11-30 17:49:46 +00001319
David Miller35d48dd2012-11-10 14:12:19 -05001320 mmap_size = MMAP_SIZE;
Thomas Gleixner55b44622010-11-30 17:49:46 +00001321 if (mmap_size > file_size)
1322 mmap_size = file_size;
1323
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001324 memset(mmaps, 0, sizeof(mmaps));
1325
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02001326 mmap_prot = PROT_READ;
1327 mmap_flags = MAP_SHARED;
1328
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001329 if (session->header.needs_swap) {
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02001330 mmap_prot |= PROT_WRITE;
1331 mmap_flags = MAP_PRIVATE;
1332 }
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001333remap:
Thomas Gleixner55b44622010-11-30 17:49:46 +00001334 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd,
1335 file_offset);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001336 if (buf == MAP_FAILED) {
1337 pr_err("failed to mmap file\n");
1338 err = -errno;
1339 goto out_err;
1340 }
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001341 mmaps[map_idx] = buf;
1342 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001343 file_pos = file_offset + head;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001344
1345more:
Frederic Weisbecker998bedc2011-05-23 13:06:28 +02001346 event = fetch_mmaped_event(session, head, mmap_size, buf);
1347 if (!event) {
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001348 if (mmaps[map_idx]) {
1349 munmap(mmaps[map_idx], mmap_size);
1350 mmaps[map_idx] = NULL;
1351 }
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001352
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001353 page_offset = page_size * (head / page_size);
1354 file_offset += page_offset;
1355 head -= page_offset;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001356 goto remap;
1357 }
1358
1359 size = event->header.size;
1360
Adrian Hunter27389d72013-07-04 16:20:27 +03001361 if (size < sizeof(struct perf_event_header) ||
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001362 perf_session__process_event(session, event, tool, file_pos) < 0) {
Jiri Olsa9389a462012-04-16 20:42:51 +02001363 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1364 file_offset + head, event->header.size,
1365 event->header.type);
1366 err = -EINVAL;
1367 goto out_err;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001368 }
1369
1370 head += size;
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001371 file_pos += size;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001372
Thomas Gleixner55b44622010-11-30 17:49:46 +00001373 if (file_pos >= progress_next) {
1374 progress_next += file_size / 16;
Arnaldo Carvalho de Meloca59bcb2011-10-25 13:29:11 -02001375 ui_progress__update(file_pos, file_size,
1376 "Processing events...");
Thomas Gleixner55b44622010-11-30 17:49:46 +00001377 }
1378
Arnaldo Carvalho de Melo33e940a2013-09-17 16:34:28 -03001379 err = 0;
1380 if (session_done())
1381 goto out_err;
1382
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001383 if (file_pos < file_size)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001384 goto more;
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001385
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +02001386 /* do the final flush for ordered samples */
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001387 session->ordered_samples.next_flush = ULLONG_MAX;
David Ahernd25380cd2012-08-26 12:24:41 -06001388 err = flush_sample_queue(session, tool);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001389out_err:
Namhyung Kima5580f32012-11-13 22:30:34 +09001390 ui_progress__finish();
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001391 perf_session__warn_about_errors(session, tool);
Thomas Gleixner020bb752010-11-30 17:49:53 +00001392 perf_session_free_sample_buffers(session);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001393 return err;
1394}
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001395
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001396int perf_session__process_events(struct perf_session *self,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001397 struct perf_tool *tool)
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001398{
1399 int err;
1400
1401 if (perf_session__register_idle_thread(self) == NULL)
1402 return -ENOMEM;
1403
Tom Zanussi8dc58102010-04-01 23:59:15 -05001404 if (!self->fd_pipe)
1405 err = __perf_session__process_events(self,
1406 self->header.data_offset,
1407 self->header.data_size,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001408 self->size, tool);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001409 else
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001410 err = __perf_session__process_pipe_events(self, tool);
Dave Martin88ca8952010-07-27 11:46:12 -03001411
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001412 return err;
1413}
1414
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -03001415bool perf_session__has_traces(struct perf_session *session, const char *msg)
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001416{
David Ahern93ea01c2013-08-07 22:50:58 -04001417 struct perf_evsel *evsel;
1418
1419 list_for_each_entry(evsel, &session->evlist->entries, node) {
1420 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
1421 return true;
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001422 }
1423
David Ahern93ea01c2013-08-07 22:50:58 -04001424 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1425 return false;
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001426}
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001427
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001428int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
1429 const char *symbol_name, u64 addr)
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001430{
1431 char *bracket;
Arnaldo Carvalho de Melo9de89fe2010-02-03 16:52:00 -02001432 enum map_type i;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001433 struct ref_reloc_sym *ref;
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001434
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001435 ref = zalloc(sizeof(struct ref_reloc_sym));
1436 if (ref == NULL)
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001437 return -ENOMEM;
1438
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001439 ref->name = strdup(symbol_name);
1440 if (ref->name == NULL) {
1441 free(ref);
1442 return -ENOMEM;
1443 }
1444
1445 bracket = strchr(ref->name, ']');
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001446 if (bracket)
1447 *bracket = '\0';
1448
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001449 ref->addr = addr;
Arnaldo Carvalho de Melo9de89fe2010-02-03 16:52:00 -02001450
1451 for (i = 0; i < MAP__NR_TYPES; ++i) {
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001452 struct kmap *kmap = map__kmap(maps[i]);
1453 kmap->ref_reloc_sym = ref;
Arnaldo Carvalho de Melo9de89fe2010-02-03 16:52:00 -02001454 }
1455
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001456 return 0;
1457}
Arnaldo Carvalho de Melo1f626bc2010-05-09 19:57:08 -03001458
1459size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp)
1460{
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -03001461 return machines__fprintf_dsos(&self->machines, fp);
Arnaldo Carvalho de Melo1f626bc2010-05-09 19:57:08 -03001462}
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -03001463
1464size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp,
Arnaldo Carvalho de Melo417c2ff2012-12-07 09:53:58 -03001465 bool (skip)(struct dso *dso, int parm), int parm)
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -03001466{
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -03001467 return machines__fprintf_dsos_buildid(&self->machines, fp, skip, parm);
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -03001468}
Arnaldo Carvalho de Meloe248de32011-03-05 21:40:06 -03001469
1470size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
1471{
1472 struct perf_evsel *pos;
1473 size_t ret = fprintf(fp, "Aggregated stats:\n");
1474
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001475 ret += events_stats__fprintf(&session->stats, fp);
Arnaldo Carvalho de Meloe248de32011-03-05 21:40:06 -03001476
1477 list_for_each_entry(pos, &session->evlist->entries, node) {
Arnaldo Carvalho de Melo7289f832012-06-12 12:34:58 -03001478 ret += fprintf(fp, "%s stats:\n", perf_evsel__name(pos));
Arnaldo Carvalho de Melo52168ee2012-12-18 16:02:17 -03001479 ret += events_stats__fprintf(&pos->hists.stats, fp);
Arnaldo Carvalho de Meloe248de32011-03-05 21:40:06 -03001480 }
1481
1482 return ret;
1483}
David Ahernc0230b22011-03-09 22:23:27 -07001484
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -02001485size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
1486{
1487 /*
1488 * FIXME: Here we have to actually print all the machines in this
1489 * session, not just the host...
1490 */
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -03001491 return machine__fprintf(&session->machines.host, fp);
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -02001492}
1493
David Ahern9cbdb702011-04-06 21:54:20 -06001494struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
1495 unsigned int type)
1496{
1497 struct perf_evsel *pos;
1498
1499 list_for_each_entry(pos, &session->evlist->entries, node) {
1500 if (pos->attr.type == type)
1501 return pos;
1502 }
1503 return NULL;
1504}
1505
Jiri Olsa71ad0f52012-08-07 15:20:46 +02001506void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
1507 struct perf_sample *sample, struct machine *machine,
David Ahern307cbb92013-08-07 22:50:53 -04001508 unsigned int print_opts, unsigned int stack_depth)
David Ahernc0230b22011-03-09 22:23:27 -07001509{
1510 struct addr_location al;
David Ahernc0230b22011-03-09 22:23:27 -07001511 struct callchain_cursor_node *node;
David Aherna6ffaf92013-08-07 22:50:51 -04001512 int print_ip = print_opts & PRINT_IP_OPT_IP;
1513 int print_sym = print_opts & PRINT_IP_OPT_SYM;
1514 int print_dso = print_opts & PRINT_IP_OPT_DSO;
1515 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET;
David Ahernb0b35f02013-08-07 22:50:52 -04001516 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE;
1517 char s = print_oneline ? ' ' : '\t';
David Ahernc0230b22011-03-09 22:23:27 -07001518
Adrian Huntere44baa32013-08-08 14:32:25 +03001519 if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
David Ahernc0230b22011-03-09 22:23:27 -07001520 error("problem processing %d event, skipping it.\n",
1521 event->header.type);
1522 return;
1523 }
1524
1525 if (symbol_conf.use_callchain && sample->callchain) {
1526
Jiri Olsa71ad0f52012-08-07 15:20:46 +02001527 if (machine__resolve_callchain(machine, evsel, al.thread,
Greg Priceb21484f2012-12-06 21:48:05 -08001528 sample, NULL, NULL) != 0) {
David Ahernc0230b22011-03-09 22:23:27 -07001529 if (verbose)
1530 error("Failed to resolve callchain. Skipping\n");
1531 return;
1532 }
Namhyung Kim47260642012-05-31 14:43:26 +09001533 callchain_cursor_commit(&callchain_cursor);
David Ahernc0230b22011-03-09 22:23:27 -07001534
David Ahern307cbb92013-08-07 22:50:53 -04001535 while (stack_depth) {
Namhyung Kim47260642012-05-31 14:43:26 +09001536 node = callchain_cursor_current(&callchain_cursor);
David Ahernc0230b22011-03-09 22:23:27 -07001537 if (!node)
1538 break;
1539
David Aherna6ffaf92013-08-07 22:50:51 -04001540 if (print_ip)
David Ahernb0b35f02013-08-07 22:50:52 -04001541 printf("%c%16" PRIx64, s, node->ip);
David Aherna6ffaf92013-08-07 22:50:51 -04001542
David Ahern787bef12011-05-27 14:28:43 -06001543 if (print_sym) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001544 printf(" ");
David Ahern251f4262013-07-28 09:14:34 -06001545 if (print_symoffset) {
1546 al.addr = node->ip;
David Ahern0b8c25d2013-07-28 09:48:32 -06001547 al.map = node->map;
David Ahern251f4262013-07-28 09:14:34 -06001548 symbol__fprintf_symname_offs(node->sym, &al, stdout);
1549 } else
1550 symbol__fprintf_symname(node->sym, stdout);
David Ahern610723f2011-05-27 14:28:44 -06001551 }
David Ahern251f4262013-07-28 09:14:34 -06001552
David Ahern610723f2011-05-27 14:28:44 -06001553 if (print_dso) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001554 printf(" (");
David Ahern52deff72012-05-29 22:58:26 -06001555 map__fprintf_dsoname(node->map, stdout);
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001556 printf(")");
David Ahern787bef12011-05-27 14:28:43 -06001557 }
David Ahernb0b35f02013-08-07 22:50:52 -04001558
1559 if (!print_oneline)
1560 printf("\n");
David Ahernc0230b22011-03-09 22:23:27 -07001561
Namhyung Kim47260642012-05-31 14:43:26 +09001562 callchain_cursor_advance(&callchain_cursor);
David Ahern307cbb92013-08-07 22:50:53 -04001563
1564 stack_depth--;
David Ahernc0230b22011-03-09 22:23:27 -07001565 }
1566
1567 } else {
David Aherna6ffaf92013-08-07 22:50:51 -04001568 if (print_ip)
1569 printf("%16" PRIx64, sample->ip);
1570
David Ahern787bef12011-05-27 14:28:43 -06001571 if (print_sym) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001572 printf(" ");
Akihiro Nagaia978f2a2012-01-30 13:43:15 +09001573 if (print_symoffset)
1574 symbol__fprintf_symname_offs(al.sym, &al,
1575 stdout);
1576 else
1577 symbol__fprintf_symname(al.sym, stdout);
David Ahern610723f2011-05-27 14:28:44 -06001578 }
1579
1580 if (print_dso) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001581 printf(" (");
1582 map__fprintf_dsoname(al.map, stdout);
1583 printf(")");
David Ahern787bef12011-05-27 14:28:43 -06001584 }
David Ahernc0230b22011-03-09 22:23:27 -07001585 }
1586}
Anton Blanchard5d67be92011-07-04 21:57:50 +10001587
1588int perf_session__cpu_bitmap(struct perf_session *session,
1589 const char *cpu_list, unsigned long *cpu_bitmap)
1590{
1591 int i;
1592 struct cpu_map *map;
1593
1594 for (i = 0; i < PERF_TYPE_MAX; ++i) {
1595 struct perf_evsel *evsel;
1596
1597 evsel = perf_session__find_first_evtype(session, i);
1598 if (!evsel)
1599 continue;
1600
1601 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
1602 pr_err("File does not contain CPU events. "
1603 "Remove -c option to proceed.\n");
1604 return -1;
1605 }
1606 }
1607
1608 map = cpu_map__new(cpu_list);
David Ahern47fbe532011-11-13 10:45:27 -07001609 if (map == NULL) {
1610 pr_err("Invalid cpu_list\n");
1611 return -1;
1612 }
Anton Blanchard5d67be92011-07-04 21:57:50 +10001613
1614 for (i = 0; i < map->nr; i++) {
1615 int cpu = map->map[i];
1616
1617 if (cpu >= MAX_NR_CPUS) {
1618 pr_err("Requested CPU %d too large. "
1619 "Consider raising MAX_NR_CPUS\n", cpu);
1620 return -1;
1621 }
1622
1623 set_bit(cpu, cpu_bitmap);
1624 }
1625
1626 return 0;
1627}
Stephane Eranianfbe96f22011-09-30 15:40:40 +02001628
1629void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
1630 bool full)
1631{
1632 struct stat st;
1633 int ret;
1634
1635 if (session == NULL || fp == NULL)
1636 return;
1637
1638 ret = fstat(session->fd, &st);
1639 if (ret == -1)
1640 return;
1641
1642 fprintf(fp, "# ========\n");
1643 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
1644 perf_header__fprintf_info(session, fp, full);
1645 fprintf(fp, "# ========\n#\n");
1646}
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001647
1648
1649int __perf_session__set_tracepoints_handlers(struct perf_session *session,
1650 const struct perf_evsel_str_handler *assocs,
1651 size_t nr_assocs)
1652{
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001653 struct perf_evsel *evsel;
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001654 size_t i;
1655 int err;
1656
1657 for (i = 0; i < nr_assocs; i++) {
Arnaldo Carvalho de Meloccf53ea2013-09-06 15:19:01 -03001658 /*
1659 * Adding a handler for an event not in the session,
1660 * just ignore it.
1661 */
1662 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001663 if (evsel == NULL)
Arnaldo Carvalho de Meloccf53ea2013-09-06 15:19:01 -03001664 continue;
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001665
1666 err = -EEXIST;
1667 if (evsel->handler.func != NULL)
Arnaldo Carvalho de Meloccf53ea2013-09-06 15:19:01 -03001668 goto out;
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001669 evsel->handler.func = assocs[i].handler;
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001670 }
1671
1672 err = 0;
1673out:
1674 return err;
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001675}