blob: 3c1b30103d547725ca0ec1a48ea117052ae641cc [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
Jiri Olsa6a4d98d2013-10-15 16:27:33 +020019static int perf_session__open(struct perf_session *self)
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020020{
Jiri Olsacc9784bd2013-10-15 16:27:34 +020021 struct perf_data_file *file = self->file;
Tom Zanussi8dc58102010-04-01 23:59:15 -050022
Jiri Olsad4339562013-07-17 19:49:41 +020023 if (perf_session__read_header(self) < 0) {
Stephane Eranian69996df2012-02-09 23:21:06 +010024 pr_err("incompatible file format (rerun with -v to learn more)");
Jiri Olsa6a4d98d2013-10-15 16:27:33 +020025 return -1;
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020026 }
27
Jiri Olsacc9784bd2013-10-15 16:27:34 +020028 if (perf_data_file__is_pipe(file))
29 return 0;
30
Arnaldo Carvalho de Meloc2a70652011-06-02 11:04:54 -030031 if (!perf_evlist__valid_sample_type(self->evlist)) {
32 pr_err("non matching sample_type");
Jiri Olsa6a4d98d2013-10-15 16:27:33 +020033 return -1;
Arnaldo Carvalho de Meloc2a70652011-06-02 11:04:54 -030034 }
35
36 if (!perf_evlist__valid_sample_id_all(self->evlist)) {
37 pr_err("non matching sample_id_all");
Jiri Olsa6a4d98d2013-10-15 16:27:33 +020038 return -1;
Arnaldo Carvalho de Meloc2a70652011-06-02 11:04:54 -030039 }
40
Jiri Olsa9ede4732012-10-10 17:38:13 +020041 if (!perf_evlist__valid_read_format(self->evlist)) {
42 pr_err("non matching read_format");
Jiri Olsa6a4d98d2013-10-15 16:27:33 +020043 return -1;
Jiri Olsa9ede4732012-10-10 17:38:13 +020044 }
45
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020046 return 0;
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020047}
48
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -030049void perf_session__set_id_hdr_size(struct perf_session *session)
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -020050{
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -030051 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
52
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -030053 machines__set_id_hdr_size(&session->machines, id_hdr_size);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -020054}
55
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080056int perf_session__create_kernel_maps(struct perf_session *self)
57{
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -030058 int ret = machine__create_kernel_maps(&self->machines.host);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080059
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080060 if (ret >= 0)
Arnaldo Carvalho de Melod118f8b2010-05-10 12:51:05 -030061 ret = machines__create_guest_kernel_maps(&self->machines);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080062 return ret;
63}
64
Arnaldo Carvalho de Melo076c6e452010-08-02 18:18:28 -030065static void perf_session__destroy_kernel_maps(struct perf_session *self)
66{
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -030067 machines__destroy_kernel_maps(&self->machines);
Arnaldo Carvalho de Melo076c6e452010-08-02 18:18:28 -030068}
69
Jiri Olsaf5fc1412013-10-15 16:27:32 +020070struct perf_session *perf_session__new(struct perf_data_file *file,
71 bool repipe, struct perf_tool *tool)
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020072{
Robert Richterefad1412011-12-07 10:02:54 +010073 struct perf_session *self;
Robert Richterefad1412011-12-07 10:02:54 +010074
Jiri Olsa6a4d98d2013-10-15 16:27:33 +020075 self = zalloc(sizeof(*self));
76 if (!self)
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020077 goto out;
78
Tom Zanussi454c4072010-05-01 01:41:20 -050079 self->repipe = repipe;
Thomas Gleixnera1225de2010-11-30 17:49:33 +000080 INIT_LIST_HEAD(&self->ordered_samples.samples);
Thomas Gleixner020bb752010-11-30 17:49:53 +000081 INIT_LIST_HEAD(&self->ordered_samples.sample_cache);
Thomas Gleixner5c891f32010-11-30 17:49:55 +000082 INIT_LIST_HEAD(&self->ordered_samples.to_free);
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -030083 machines__init(&self->machines);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020084
Jiri Olsa6a4d98d2013-10-15 16:27:33 +020085 if (file) {
86 if (perf_data_file__open(file))
Arnaldo Carvalho de Melo64abebf72010-01-27 21:05:52 -020087 goto out_delete;
Jiri Olsa6a4d98d2013-10-15 16:27:33 +020088
Jiri Olsacc9784bd2013-10-15 16:27:34 +020089 self->file = file;
Jiri Olsa6a4d98d2013-10-15 16:27:33 +020090
91 if (perf_data_file__is_read(file)) {
92 if (perf_session__open(self) < 0)
93 goto out_close;
94
95 perf_session__set_id_hdr_size(self);
96 }
97 }
98
99 if (!file || perf_data_file__is_write(file)) {
Arnaldo Carvalho de Melo64abebf72010-01-27 21:05:52 -0200100 /*
101 * In O_RDONLY mode this will be performed when reading the
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200102 * kernel MMAP event, in perf_event__process_mmap().
Arnaldo Carvalho de Melo64abebf72010-01-27 21:05:52 -0200103 */
104 if (perf_session__create_kernel_maps(self) < 0)
105 goto out_delete;
106 }
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -0200107
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200108 if (tool && tool->ordering_requires_timestamps &&
Arnaldo Carvalho de Melo5e562472012-08-01 19:25:26 -0300109 tool->ordered_samples && !perf_evlist__sample_id_all(self->evlist)) {
Ian Munsie21ef97f2010-12-10 14:09:16 +1100110 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200111 tool->ordered_samples = false;
Ian Munsie21ef97f2010-12-10 14:09:16 +1100112 }
113
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200114 return self;
Jiri Olsa6a4d98d2013-10-15 16:27:33 +0200115
116 out_close:
117 perf_data_file__close(file);
118 out_delete:
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200119 perf_session__delete(self);
Jiri Olsa6a4d98d2013-10-15 16:27:33 +0200120 out:
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200121 return NULL;
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200122}
123
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200124static void perf_session__delete_dead_threads(struct perf_session *session)
125{
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -0300126 machine__delete_dead_threads(&session->machines.host);
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200127}
128
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200129static void perf_session__delete_threads(struct perf_session *session)
130{
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -0300131 machine__delete_threads(&session->machines.host);
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200132}
133
Namhyung Kim03cd2092012-11-21 13:43:19 +0900134static void perf_session_env__delete(struct perf_session_env *env)
135{
136 free(env->hostname);
137 free(env->os_release);
138 free(env->version);
139 free(env->arch);
140 free(env->cpu_desc);
141 free(env->cpuid);
142
143 free(env->cmdline);
144 free(env->sibling_cores);
145 free(env->sibling_threads);
146 free(env->numa_nodes);
147 free(env->pmu_mappings);
148}
149
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200150void perf_session__delete(struct perf_session *self)
151{
Arnaldo Carvalho de Melo076c6e452010-08-02 18:18:28 -0300152 perf_session__destroy_kernel_maps(self);
Arnaldo Carvalho de Melod65a4582010-07-30 18:31:28 -0300153 perf_session__delete_dead_threads(self);
154 perf_session__delete_threads(self);
Namhyung Kim03cd2092012-11-21 13:43:19 +0900155 perf_session_env__delete(&self->header.env);
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -0300156 machines__exit(&self->machines);
Jiri Olsacc9784bd2013-10-15 16:27:34 +0200157 if (self->file)
158 perf_data_file__close(self->file);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200159 free(self);
Jiri Olsa7dbf4dc2012-09-10 18:50:19 +0200160 vdso__exit();
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200161}
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200162
Adrian Hunter47c3d102013-07-04 16:20:21 +0300163static int process_event_synth_tracing_data_stub(struct perf_tool *tool
164 __maybe_unused,
165 union perf_event *event
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300166 __maybe_unused,
167 struct perf_session *session
168 __maybe_unused)
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200169{
170 dump_printf(": unhandled!\n");
171 return 0;
172}
173
Adrian Hunter47c3d102013-07-04 16:20:21 +0300174static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
175 union perf_event *event __maybe_unused,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300176 struct perf_evlist **pevlist
177 __maybe_unused)
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -0200178{
179 dump_printf(": unhandled!\n");
180 return 0;
181}
182
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300183static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
184 union perf_event *event __maybe_unused,
185 struct perf_sample *sample __maybe_unused,
186 struct perf_evsel *evsel __maybe_unused,
187 struct machine *machine __maybe_unused)
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300188{
189 dump_printf(": unhandled!\n");
190 return 0;
191}
192
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300193static int process_event_stub(struct perf_tool *tool __maybe_unused,
194 union perf_event *event __maybe_unused,
195 struct perf_sample *sample __maybe_unused,
196 struct machine *machine __maybe_unused)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200197{
198 dump_printf(": unhandled!\n");
199 return 0;
200}
201
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300202static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
203 union perf_event *event __maybe_unused,
204 struct perf_session *perf_session
205 __maybe_unused)
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200206{
207 dump_printf(": unhandled!\n");
208 return 0;
209}
210
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200211static int process_finished_round(struct perf_tool *tool,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200212 union perf_event *event,
213 struct perf_session *session);
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200214
David Ahern9c501402013-08-02 14:05:41 -0600215void perf_tool__fill_defaults(struct perf_tool *tool)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200216{
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200217 if (tool->sample == NULL)
218 tool->sample = process_event_sample_stub;
219 if (tool->mmap == NULL)
220 tool->mmap = process_event_stub;
David Ahern6adb0b02013-09-22 19:44:59 -0600221 if (tool->mmap2 == NULL)
222 tool->mmap2 = process_event_stub;
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200223 if (tool->comm == NULL)
224 tool->comm = process_event_stub;
225 if (tool->fork == NULL)
226 tool->fork = process_event_stub;
227 if (tool->exit == NULL)
228 tool->exit = process_event_stub;
229 if (tool->lost == NULL)
230 tool->lost = perf_event__process_lost;
231 if (tool->read == NULL)
232 tool->read = process_event_sample_stub;
233 if (tool->throttle == NULL)
234 tool->throttle = process_event_stub;
235 if (tool->unthrottle == NULL)
236 tool->unthrottle = process_event_stub;
237 if (tool->attr == NULL)
238 tool->attr = process_event_synth_attr_stub;
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200239 if (tool->tracing_data == NULL)
240 tool->tracing_data = process_event_synth_tracing_data_stub;
241 if (tool->build_id == NULL)
242 tool->build_id = process_finished_round_stub;
243 if (tool->finished_round == NULL) {
244 if (tool->ordered_samples)
245 tool->finished_round = process_finished_round;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200246 else
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200247 tool->finished_round = process_finished_round_stub;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200248 }
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200249}
David Ahern80c01202012-06-08 11:47:51 -0300250
251void mem_bswap_32(void *src, int byte_size)
252{
253 u32 *m = src;
254 while (byte_size > 0) {
255 *m = bswap_32(*m);
256 byte_size -= sizeof(u32);
257 ++m;
258 }
259}
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200260
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200261void mem_bswap_64(void *src, int byte_size)
262{
263 u64 *m = src;
264
265 while (byte_size > 0) {
266 *m = bswap_64(*m);
267 byte_size -= sizeof(u64);
268 ++m;
269 }
270}
271
Jiri Olsa268fb202012-05-30 14:23:43 +0200272static void swap_sample_id_all(union perf_event *event, void *data)
273{
274 void *end = (void *) event + event->header.size;
275 int size = end - data;
276
277 BUG_ON(size % sizeof(u64));
278 mem_bswap_64(data, size);
279}
280
281static void perf_event__all64_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300282 bool sample_id_all __maybe_unused)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200283{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200284 struct perf_event_header *hdr = &event->header;
285 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200286}
287
Jiri Olsa268fb202012-05-30 14:23:43 +0200288static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200289{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200290 event->comm.pid = bswap_32(event->comm.pid);
291 event->comm.tid = bswap_32(event->comm.tid);
Jiri Olsa268fb202012-05-30 14:23:43 +0200292
293 if (sample_id_all) {
294 void *data = &event->comm.comm;
295
Irina Tirdea9ac3e482012-09-11 01:15:01 +0300296 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
Jiri Olsa268fb202012-05-30 14:23:43 +0200297 swap_sample_id_all(event, data);
298 }
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200299}
300
Jiri Olsa268fb202012-05-30 14:23:43 +0200301static void perf_event__mmap_swap(union perf_event *event,
302 bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200303{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200304 event->mmap.pid = bswap_32(event->mmap.pid);
305 event->mmap.tid = bswap_32(event->mmap.tid);
306 event->mmap.start = bswap_64(event->mmap.start);
307 event->mmap.len = bswap_64(event->mmap.len);
308 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
Jiri Olsa268fb202012-05-30 14:23:43 +0200309
310 if (sample_id_all) {
311 void *data = &event->mmap.filename;
312
Irina Tirdea9ac3e482012-09-11 01:15:01 +0300313 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
Jiri Olsa268fb202012-05-30 14:23:43 +0200314 swap_sample_id_all(event, data);
315 }
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200316}
317
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200318static void perf_event__mmap2_swap(union perf_event *event,
319 bool sample_id_all)
320{
321 event->mmap2.pid = bswap_32(event->mmap2.pid);
322 event->mmap2.tid = bswap_32(event->mmap2.tid);
323 event->mmap2.start = bswap_64(event->mmap2.start);
324 event->mmap2.len = bswap_64(event->mmap2.len);
325 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
326 event->mmap2.maj = bswap_32(event->mmap2.maj);
327 event->mmap2.min = bswap_32(event->mmap2.min);
328 event->mmap2.ino = bswap_64(event->mmap2.ino);
329
330 if (sample_id_all) {
331 void *data = &event->mmap2.filename;
332
333 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
334 swap_sample_id_all(event, data);
335 }
336}
Jiri Olsa268fb202012-05-30 14:23:43 +0200337static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200338{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200339 event->fork.pid = bswap_32(event->fork.pid);
340 event->fork.tid = bswap_32(event->fork.tid);
341 event->fork.ppid = bswap_32(event->fork.ppid);
342 event->fork.ptid = bswap_32(event->fork.ptid);
343 event->fork.time = bswap_64(event->fork.time);
Jiri Olsa268fb202012-05-30 14:23:43 +0200344
345 if (sample_id_all)
346 swap_sample_id_all(event, &event->fork + 1);
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200347}
348
Jiri Olsa268fb202012-05-30 14:23:43 +0200349static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200350{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200351 event->read.pid = bswap_32(event->read.pid);
352 event->read.tid = bswap_32(event->read.tid);
353 event->read.value = bswap_64(event->read.value);
354 event->read.time_enabled = bswap_64(event->read.time_enabled);
355 event->read.time_running = bswap_64(event->read.time_running);
356 event->read.id = bswap_64(event->read.id);
Jiri Olsa268fb202012-05-30 14:23:43 +0200357
358 if (sample_id_all)
359 swap_sample_id_all(event, &event->read + 1);
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200360}
361
Jiri Olsadd96c462013-09-01 12:36:15 +0200362static void perf_event__throttle_swap(union perf_event *event,
363 bool sample_id_all)
364{
365 event->throttle.time = bswap_64(event->throttle.time);
366 event->throttle.id = bswap_64(event->throttle.id);
367 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
368
369 if (sample_id_all)
370 swap_sample_id_all(event, &event->throttle + 1);
371}
372
Jiri Olsae108c662012-05-16 08:59:03 +0200373static u8 revbyte(u8 b)
374{
375 int rev = (b >> 4) | ((b & 0xf) << 4);
376 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
377 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
378 return (u8) rev;
379}
380
381/*
382 * XXX this is hack in attempt to carry flags bitfield
383 * throught endian village. ABI says:
384 *
385 * Bit-fields are allocated from right to left (least to most significant)
386 * on little-endian implementations and from left to right (most to least
387 * significant) on big-endian implementations.
388 *
389 * The above seems to be byte specific, so we need to reverse each
390 * byte of the bitfield. 'Internet' also says this might be implementation
391 * specific and we probably need proper fix and carry perf_event_attr
392 * bitfield flags in separate data file FEAT_ section. Thought this seems
393 * to work for now.
394 */
395static void swap_bitfield(u8 *p, unsigned len)
396{
397 unsigned i;
398
399 for (i = 0; i < len; i++) {
400 *p = revbyte(*p);
401 p++;
402 }
403}
404
David Aherneda39132011-07-15 12:34:09 -0600405/* exported for swapping attributes in file header */
406void perf_event__attr_swap(struct perf_event_attr *attr)
407{
408 attr->type = bswap_32(attr->type);
409 attr->size = bswap_32(attr->size);
410 attr->config = bswap_64(attr->config);
411 attr->sample_period = bswap_64(attr->sample_period);
412 attr->sample_type = bswap_64(attr->sample_type);
413 attr->read_format = bswap_64(attr->read_format);
414 attr->wakeup_events = bswap_32(attr->wakeup_events);
415 attr->bp_type = bswap_32(attr->bp_type);
416 attr->bp_addr = bswap_64(attr->bp_addr);
417 attr->bp_len = bswap_64(attr->bp_len);
Adrian Hunter7db59522013-10-18 15:29:03 +0300418 attr->branch_sample_type = bswap_64(attr->branch_sample_type);
419 attr->sample_regs_user = bswap_64(attr->sample_regs_user);
420 attr->sample_stack_user = bswap_32(attr->sample_stack_user);
Jiri Olsae108c662012-05-16 08:59:03 +0200421
422 swap_bitfield((u8 *) (&attr->read_format + 1), sizeof(u64));
David Aherneda39132011-07-15 12:34:09 -0600423}
424
Jiri Olsa268fb202012-05-30 14:23:43 +0200425static void perf_event__hdr_attr_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300426 bool sample_id_all __maybe_unused)
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500427{
428 size_t size;
429
David Aherneda39132011-07-15 12:34:09 -0600430 perf_event__attr_swap(&event->attr.attr);
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500431
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200432 size = event->header.size;
433 size -= (void *)&event->attr.id - (void *)event;
434 mem_bswap_64(event->attr.id, size);
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500435}
436
Jiri Olsa268fb202012-05-30 14:23:43 +0200437static void perf_event__event_type_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300438 bool sample_id_all __maybe_unused)
Tom Zanussicd19a032010-04-01 23:59:20 -0500439{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200440 event->event_type.event_type.event_id =
441 bswap_64(event->event_type.event_type.event_id);
Tom Zanussicd19a032010-04-01 23:59:20 -0500442}
443
Jiri Olsa268fb202012-05-30 14:23:43 +0200444static void perf_event__tracing_data_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300445 bool sample_id_all __maybe_unused)
Tom Zanussi92155452010-04-01 23:59:21 -0500446{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200447 event->tracing_data.size = bswap_32(event->tracing_data.size);
Tom Zanussi92155452010-04-01 23:59:21 -0500448}
449
Jiri Olsa268fb202012-05-30 14:23:43 +0200450typedef void (*perf_event__swap_op)(union perf_event *event,
451 bool sample_id_all);
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200452
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200453static perf_event__swap_op perf_event__swap_ops[] = {
454 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200455 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200456 [PERF_RECORD_COMM] = perf_event__comm_swap,
457 [PERF_RECORD_FORK] = perf_event__task_swap,
458 [PERF_RECORD_EXIT] = perf_event__task_swap,
459 [PERF_RECORD_LOST] = perf_event__all64_swap,
460 [PERF_RECORD_READ] = perf_event__read_swap,
Jiri Olsadd96c462013-09-01 12:36:15 +0200461 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
462 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200463 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
David Aherneda39132011-07-15 12:34:09 -0600464 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200465 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
466 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
467 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
468 [PERF_RECORD_HEADER_MAX] = NULL,
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200469};
470
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200471struct sample_queue {
472 u64 timestamp;
Thomas Gleixnere4c2df12010-12-07 12:48:50 +0000473 u64 file_offset;
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200474 union perf_event *event;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200475 struct list_head list;
476};
477
Thomas Gleixner020bb752010-11-30 17:49:53 +0000478static void perf_session_free_sample_buffers(struct perf_session *session)
479{
480 struct ordered_samples *os = &session->ordered_samples;
481
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000482 while (!list_empty(&os->to_free)) {
Thomas Gleixner020bb752010-11-30 17:49:53 +0000483 struct sample_queue *sq;
484
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000485 sq = list_entry(os->to_free.next, struct sample_queue, list);
Thomas Gleixner020bb752010-11-30 17:49:53 +0000486 list_del(&sq->list);
487 free(sq);
488 }
489}
490
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100491static int perf_session_deliver_event(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200492 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200493 struct perf_sample *sample,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200494 struct perf_tool *tool,
Thomas Gleixnerf74725d2010-12-07 12:48:53 +0000495 u64 file_offset);
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100496
David Ahernd25380cd2012-08-26 12:24:41 -0600497static int flush_sample_queue(struct perf_session *s,
David Ahern9c501402013-08-02 14:05:41 -0600498 struct perf_tool *tool)
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200499{
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000500 struct ordered_samples *os = &s->ordered_samples;
501 struct list_head *head = &os->samples;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200502 struct sample_queue *tmp, *iter;
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200503 struct perf_sample sample;
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000504 u64 limit = os->next_flush;
505 u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL;
Jiri Olsa526fd8d2013-09-05 11:14:50 +0200506 bool show_progress = limit == ULLONG_MAX;
Arnaldo Carvalho de Melo4d3001f2013-10-23 15:40:38 -0300507 struct ui_progress prog;
Frederic Weisbecker5538bec2011-05-22 02:17:22 +0200508 int ret;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200509
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200510 if (!tool->ordered_samples || !limit)
David Ahernd25380cd2012-08-26 12:24:41 -0600511 return 0;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200512
Arnaldo Carvalho de Melo4d3001f2013-10-23 15:40:38 -0300513 if (show_progress)
514 ui_progress__init(&prog, os->nr_samples, "Processing time ordered events...");
515
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200516 list_for_each_entry_safe(iter, tmp, head, list) {
Arnaldo Carvalho de Melo33e940a2013-09-17 16:34:28 -0300517 if (session_done())
518 return 0;
519
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200520 if (iter->timestamp > limit)
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000521 break;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200522
Arnaldo Carvalho de Melo0807d2d2012-09-26 12:48:18 -0300523 ret = perf_evlist__parse_sample(s->evlist, iter->event, &sample);
Frederic Weisbecker5538bec2011-05-22 02:17:22 +0200524 if (ret)
525 pr_err("Can't parse sample, err = %d\n", ret);
David Ahernd25380cd2012-08-26 12:24:41 -0600526 else {
527 ret = perf_session_deliver_event(s, iter->event, &sample, tool,
528 iter->file_offset);
529 if (ret)
530 return ret;
531 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200532
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000533 os->last_flush = iter->timestamp;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200534 list_del(&iter->list);
Thomas Gleixner020bb752010-11-30 17:49:53 +0000535 list_add(&iter->list, &os->sample_cache);
Arnaldo Carvalho de Melo4d3001f2013-10-23 15:40:38 -0300536
537 if (show_progress)
538 ui_progress__update(&prog, 1);
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200539 }
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000540
541 if (list_empty(head)) {
542 os->last_sample = NULL;
543 } else if (last_ts <= limit) {
544 os->last_sample =
545 list_entry(head->prev, struct sample_queue, list);
546 }
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200547
548 os->nr_samples = 0;
David Ahernd25380cd2012-08-26 12:24:41 -0600549
550 return 0;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200551}
552
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200553/*
554 * When perf record finishes a pass on every buffers, it records this pseudo
555 * event.
556 * We record the max timestamp t found in the pass n.
557 * Assuming these timestamps are monotonic across cpus, we know that if
558 * a buffer still has events with timestamps below t, they will be all
559 * available and then read in the pass n + 1.
560 * Hence when we start to read the pass n + 2, we can safely flush every
561 * events with timestamps below t.
562 *
563 * ============ PASS n =================
564 * CPU 0 | CPU 1
565 * |
566 * cnt1 timestamps | cnt2 timestamps
567 * 1 | 2
568 * 2 | 3
569 * - | 4 <--- max recorded
570 *
571 * ============ PASS n + 1 ==============
572 * CPU 0 | CPU 1
573 * |
574 * cnt1 timestamps | cnt2 timestamps
575 * 3 | 5
576 * 4 | 6
577 * 5 | 7 <---- max recorded
578 *
579 * Flush every events below timestamp 4
580 *
581 * ============ PASS n + 2 ==============
582 * CPU 0 | CPU 1
583 * |
584 * cnt1 timestamps | cnt2 timestamps
585 * 6 | 8
586 * 7 | 9
587 * - | 10
588 *
589 * Flush every events below timestamp 7
590 * etc...
591 */
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200592static int process_finished_round(struct perf_tool *tool,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300593 union perf_event *event __maybe_unused,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200594 struct perf_session *session)
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200595{
David Ahernd25380cd2012-08-26 12:24:41 -0600596 int ret = flush_sample_queue(session, tool);
597 if (!ret)
598 session->ordered_samples.next_flush = session->ordered_samples.max_timestamp;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200599
David Ahernd25380cd2012-08-26 12:24:41 -0600600 return ret;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200601}
602
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200603/* The queue is ordered by time */
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100604static void __queue_event(struct sample_queue *new, struct perf_session *s)
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200605{
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000606 struct ordered_samples *os = &s->ordered_samples;
607 struct sample_queue *sample = os->last_sample;
608 u64 timestamp = new->timestamp;
609 struct list_head *p;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200610
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200611 ++os->nr_samples;
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000612 os->last_sample = new;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200613
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000614 if (!sample) {
615 list_add(&new->list, &os->samples);
616 os->max_timestamp = timestamp;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200617 return;
618 }
619
620 /*
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000621 * last_sample might point to some random place in the list as it's
622 * the last queued event. We expect that the new event is close to
623 * this.
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200624 */
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000625 if (sample->timestamp <= timestamp) {
626 while (sample->timestamp <= timestamp) {
627 p = sample->list.next;
628 if (p == &os->samples) {
629 list_add_tail(&new->list, &os->samples);
630 os->max_timestamp = timestamp;
631 return;
632 }
633 sample = list_entry(p, struct sample_queue, list);
634 }
635 list_add_tail(&new->list, &sample->list);
636 } else {
637 while (sample->timestamp > timestamp) {
638 p = sample->list.prev;
639 if (p == &os->samples) {
640 list_add(&new->list, &os->samples);
641 return;
642 }
643 sample = list_entry(p, struct sample_queue, list);
644 }
645 list_add(&new->list, &sample->list);
646 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200647}
648
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000649#define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue))
650
David Aherne30b88a2013-08-05 21:41:33 -0400651int perf_session_queue_event(struct perf_session *s, union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200652 struct perf_sample *sample, u64 file_offset)
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200653{
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000654 struct ordered_samples *os = &s->ordered_samples;
655 struct list_head *sc = &os->sample_cache;
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200656 u64 timestamp = sample->time;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200657 struct sample_queue *new;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200658
Thomas Gleixner79a14c12010-12-07 12:48:44 +0000659 if (!timestamp || timestamp == ~0ULL)
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100660 return -ETIME;
661
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200662 if (timestamp < s->ordered_samples.last_flush) {
663 printf("Warning: Timestamp below last timeslice flush\n");
664 return -EINVAL;
665 }
666
Thomas Gleixner020bb752010-11-30 17:49:53 +0000667 if (!list_empty(sc)) {
668 new = list_entry(sc->next, struct sample_queue, list);
669 list_del(&new->list);
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000670 } else if (os->sample_buffer) {
671 new = os->sample_buffer + os->sample_buffer_idx;
672 if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER)
673 os->sample_buffer = NULL;
Thomas Gleixner020bb752010-11-30 17:49:53 +0000674 } else {
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000675 os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new));
676 if (!os->sample_buffer)
Thomas Gleixner020bb752010-11-30 17:49:53 +0000677 return -ENOMEM;
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000678 list_add(&os->sample_buffer->list, &os->to_free);
679 os->sample_buffer_idx = 2;
680 new = os->sample_buffer + 1;
Thomas Gleixner020bb752010-11-30 17:49:53 +0000681 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200682
683 new->timestamp = timestamp;
Thomas Gleixnere4c2df12010-12-07 12:48:50 +0000684 new->file_offset = file_offset;
Thomas Gleixnerfe174202010-11-30 17:49:49 +0000685 new->event = event;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200686
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100687 __queue_event(new, s);
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200688
689 return 0;
690}
691
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200692static void callchain__printf(struct perf_sample *sample)
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -0200693{
694 unsigned int i;
695
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200696 printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr);
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -0200697
698 for (i = 0; i < sample->callchain->nr; i++)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200699 printf("..... %2d: %016" PRIx64 "\n",
700 i, sample->callchain->ips[i]);
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -0200701}
702
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +0100703static void branch_stack__printf(struct perf_sample *sample)
704{
705 uint64_t i;
706
707 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
708
709 for (i = 0; i < sample->branch_stack->nr; i++)
710 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n",
711 i, sample->branch_stack->entries[i].from,
712 sample->branch_stack->entries[i].to);
713}
714
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200715static void regs_dump__printf(u64 mask, u64 *regs)
716{
717 unsigned rid, i = 0;
718
719 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
720 u64 val = regs[i++];
721
722 printf(".... %-5s 0x%" PRIx64 "\n",
723 perf_reg_name(rid), val);
724 }
725}
726
727static void regs_user__printf(struct perf_sample *sample, u64 mask)
728{
729 struct regs_dump *user_regs = &sample->user_regs;
730
731 if (user_regs->regs) {
732 printf("... user regs: mask 0x%" PRIx64 "\n", mask);
733 regs_dump__printf(mask, user_regs->regs);
734 }
735}
736
737static void stack_user__printf(struct stack_dump *dump)
738{
739 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
740 dump->size, dump->offset);
741}
742
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200743static void perf_session__print_tstamp(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200744 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200745 struct perf_sample *sample)
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200746{
Adrian Hunter75562572013-08-27 11:23:09 +0300747 u64 sample_type = __perf_evlist__combined_sample_type(session->evlist);
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300748
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200749 if (event->header.type != PERF_RECORD_SAMPLE &&
Arnaldo Carvalho de Melo5e562472012-08-01 19:25:26 -0300750 !perf_evlist__sample_id_all(session->evlist)) {
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200751 fputs("-1 -1 ", stdout);
752 return;
753 }
754
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300755 if ((sample_type & PERF_SAMPLE_CPU))
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200756 printf("%u ", sample->cpu);
757
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300758 if (sample_type & PERF_SAMPLE_TIME)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200759 printf("%" PRIu64 " ", sample->time);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200760}
761
Jiri Olsa9ede4732012-10-10 17:38:13 +0200762static void sample_read__printf(struct perf_sample *sample, u64 read_format)
763{
764 printf("... sample_read:\n");
765
766 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
767 printf("...... time enabled %016" PRIx64 "\n",
768 sample->read.time_enabled);
769
770 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
771 printf("...... time running %016" PRIx64 "\n",
772 sample->read.time_running);
773
774 if (read_format & PERF_FORMAT_GROUP) {
775 u64 i;
776
777 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
778
779 for (i = 0; i < sample->read.group.nr; i++) {
780 struct sample_read_value *value;
781
782 value = &sample->read.group.values[i];
783 printf("..... id %016" PRIx64
784 ", value %016" PRIx64 "\n",
785 value->id, value->value);
786 }
787 } else
788 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
789 sample->read.one.id, sample->read.one.value);
790}
791
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200792static void dump_event(struct perf_session *session, union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200793 u64 file_offset, struct perf_sample *sample)
Thomas Gleixner9aefcab2010-12-07 12:48:47 +0000794{
795 if (!dump_trace)
796 return;
797
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200798 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
799 file_offset, event->header.size, event->header.type);
Thomas Gleixner9aefcab2010-12-07 12:48:47 +0000800
801 trace_event(event);
802
803 if (sample)
804 perf_session__print_tstamp(session, event, sample);
805
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200806 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200807 event->header.size, perf_event__name(event->header.type));
Thomas Gleixner9aefcab2010-12-07 12:48:47 +0000808}
809
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200810static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200811 struct perf_sample *sample)
Thomas Gleixner9aefcab2010-12-07 12:48:47 +0000812{
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300813 u64 sample_type;
814
Arnaldo Carvalho de Meloddbc24b2010-12-09 12:20:20 -0200815 if (!dump_trace)
816 return;
817
David Ahern7cec0922011-05-30 13:08:23 -0600818 printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200819 event->header.misc, sample->pid, sample->tid, sample->ip,
David Ahern7cec0922011-05-30 13:08:23 -0600820 sample->period, sample->addr);
Thomas Gleixner9aefcab2010-12-07 12:48:47 +0000821
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200822 sample_type = evsel->attr.sample_type;
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300823
824 if (sample_type & PERF_SAMPLE_CALLCHAIN)
Arnaldo Carvalho de Meloddbc24b2010-12-09 12:20:20 -0200825 callchain__printf(sample);
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +0100826
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300827 if (sample_type & PERF_SAMPLE_BRANCH_STACK)
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +0100828 branch_stack__printf(sample);
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200829
830 if (sample_type & PERF_SAMPLE_REGS_USER)
831 regs_user__printf(sample, evsel->attr.sample_regs_user);
832
833 if (sample_type & PERF_SAMPLE_STACK_USER)
834 stack_user__printf(&sample->user_stack);
Andi Kleen05484292013-01-24 16:10:29 +0100835
836 if (sample_type & PERF_SAMPLE_WEIGHT)
837 printf("... weight: %" PRIu64 "\n", sample->weight);
Stephane Eranian98a3b322013-01-24 16:10:35 +0100838
839 if (sample_type & PERF_SAMPLE_DATA_SRC)
840 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
Jiri Olsa9ede4732012-10-10 17:38:13 +0200841
Andi Kleen475eeab2013-09-20 07:40:43 -0700842 if (sample_type & PERF_SAMPLE_TRANSACTION)
843 printf("... transaction: %" PRIx64 "\n", sample->transaction);
844
Jiri Olsa9ede4732012-10-10 17:38:13 +0200845 if (sample_type & PERF_SAMPLE_READ)
846 sample_read__printf(sample, evsel->attr.read_format);
Thomas Gleixner9aefcab2010-12-07 12:48:47 +0000847}
848
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200849static struct machine *
850 perf_session__find_machine_for_cpumode(struct perf_session *session,
Adrian Hunteref893252013-08-27 11:23:06 +0300851 union perf_event *event,
852 struct perf_sample *sample)
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200853{
854 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
855
David Ahern7c0f4a42012-07-20 17:25:48 -0600856 if (perf_guest &&
857 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
858 (cpumode == PERF_RECORD_MISC_GUEST_USER))) {
Nikunj A. Dadhania7fb0a5e2012-04-09 13:52:23 +0530859 u32 pid;
860
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200861 if (event->header.type == PERF_RECORD_MMAP
862 || event->header.type == PERF_RECORD_MMAP2)
Nikunj A. Dadhania7fb0a5e2012-04-09 13:52:23 +0530863 pid = event->mmap.pid;
864 else
Adrian Hunteref893252013-08-27 11:23:06 +0300865 pid = sample->pid;
Nikunj A. Dadhania7fb0a5e2012-04-09 13:52:23 +0530866
David Ahern207b5792012-07-01 16:11:37 -0600867 return perf_session__findnew_machine(session, pid);
Nikunj A. Dadhania7fb0a5e2012-04-09 13:52:23 +0530868 }
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200869
Arnaldo Carvalho de Melo34ba5122012-12-19 09:04:24 -0300870 return &session->machines.host;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200871}
872
Jiri Olsae4caec02012-10-10 18:52:24 +0200873static int deliver_sample_value(struct perf_session *session,
874 struct perf_tool *tool,
875 union perf_event *event,
876 struct perf_sample *sample,
877 struct sample_read_value *v,
878 struct machine *machine)
879{
880 struct perf_sample_id *sid;
881
882 sid = perf_evlist__id2sid(session->evlist, v->id);
883 if (sid) {
884 sample->id = v->id;
885 sample->period = v->value - sid->period;
886 sid->period = v->value;
887 }
888
889 if (!sid || sid->evsel == NULL) {
890 ++session->stats.nr_unknown_id;
891 return 0;
892 }
893
894 return tool->sample(tool, event, sample, sid->evsel, machine);
895}
896
897static int deliver_sample_group(struct perf_session *session,
898 struct perf_tool *tool,
899 union perf_event *event,
900 struct perf_sample *sample,
901 struct machine *machine)
902{
903 int ret = -EINVAL;
904 u64 i;
905
906 for (i = 0; i < sample->read.group.nr; i++) {
907 ret = deliver_sample_value(session, tool, event, sample,
908 &sample->read.group.values[i],
909 machine);
910 if (ret)
911 break;
912 }
913
914 return ret;
915}
916
917static int
918perf_session__deliver_sample(struct perf_session *session,
919 struct perf_tool *tool,
920 union perf_event *event,
921 struct perf_sample *sample,
922 struct perf_evsel *evsel,
923 struct machine *machine)
924{
925 /* We know evsel != NULL. */
926 u64 sample_type = evsel->attr.sample_type;
927 u64 read_format = evsel->attr.read_format;
928
929 /* Standard sample delievery. */
930 if (!(sample_type & PERF_SAMPLE_READ))
931 return tool->sample(tool, event, sample, evsel, machine);
932
933 /* For PERF_SAMPLE_READ we have either single or group mode. */
934 if (read_format & PERF_FORMAT_GROUP)
935 return deliver_sample_group(session, tool, event, sample,
936 machine);
937 else
938 return deliver_sample_value(session, tool, event, sample,
939 &sample->read.one, machine);
940}
941
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100942static int perf_session_deliver_event(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200943 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200944 struct perf_sample *sample,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200945 struct perf_tool *tool,
Thomas Gleixner532e7262010-12-07 12:48:55 +0000946 u64 file_offset)
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100947{
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300948 struct perf_evsel *evsel;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200949 struct machine *machine;
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300950
Thomas Gleixner532e7262010-12-07 12:48:55 +0000951 dump_event(session, event, file_offset, sample);
952
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -0200953 evsel = perf_evlist__id2evsel(session->evlist, sample->id);
954 if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) {
955 /*
956 * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here
957 * because the tools right now may apply filters, discarding
958 * some of the samples. For consistency, in the future we
959 * should have something like nr_filtered_samples and remove
960 * the sample->period from total_sample_period, etc, KISS for
961 * now tho.
962 *
963 * Also testing against NULL allows us to handle files without
964 * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the
965 * future probably it'll be a good idea to restrict event
966 * processing via perf_session to files with both set.
967 */
968 hists__inc_nr_events(&evsel->hists, event->header.type);
969 }
970
Adrian Hunteref893252013-08-27 11:23:06 +0300971 machine = perf_session__find_machine_for_cpumode(session, event,
972 sample);
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200973
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100974 switch (event->header.type) {
975 case PERF_RECORD_SAMPLE:
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200976 dump_sample(evsel, event, sample);
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300977 if (evsel == NULL) {
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -0300978 ++session->stats.nr_unknown_id;
Jiri Olsa67822062012-04-12 14:21:01 +0200979 return 0;
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300980 }
Joerg Roedel0c095712012-02-10 18:05:04 +0100981 if (machine == NULL) {
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -0300982 ++session->stats.nr_unprocessable_samples;
Jiri Olsa67822062012-04-12 14:21:01 +0200983 return 0;
Joerg Roedel0c095712012-02-10 18:05:04 +0100984 }
Jiri Olsae4caec02012-10-10 18:52:24 +0200985 return perf_session__deliver_sample(session, tool, event,
986 sample, evsel, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100987 case PERF_RECORD_MMAP:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200988 return tool->mmap(tool, event, sample, machine);
Stephane Eranian5c5e8542013-08-21 12:10:25 +0200989 case PERF_RECORD_MMAP2:
990 return tool->mmap2(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100991 case PERF_RECORD_COMM:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200992 return tool->comm(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100993 case PERF_RECORD_FORK:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200994 return tool->fork(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100995 case PERF_RECORD_EXIT:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200996 return tool->exit(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100997 case PERF_RECORD_LOST:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200998 if (tool->lost == perf_event__process_lost)
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -0300999 session->stats.total_lost += event->lost.lost;
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001000 return tool->lost(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001001 case PERF_RECORD_READ:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001002 return tool->read(tool, event, sample, evsel, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001003 case PERF_RECORD_THROTTLE:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001004 return tool->throttle(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001005 case PERF_RECORD_UNTHROTTLE:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001006 return tool->unthrottle(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001007 default:
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001008 ++session->stats.nr_unknown_events;
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001009 return -1;
1010 }
1011}
1012
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001013static int perf_session__process_user_event(struct perf_session *session, union perf_event *event,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001014 struct perf_tool *tool, u64 file_offset)
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001015{
Jiri Olsacc9784bd2013-10-15 16:27:34 +02001016 int fd = perf_data_file__fd(session->file);
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -02001017 int err;
1018
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001019 dump_event(session, event, file_offset, NULL);
1020
1021 /* These events are processed right away */
1022 switch (event->header.type) {
1023 case PERF_RECORD_HEADER_ATTR:
Adrian Hunter47c3d102013-07-04 16:20:21 +03001024 err = tool->attr(tool, event, &session->evlist);
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -02001025 if (err == 0)
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -03001026 perf_session__set_id_hdr_size(session);
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -02001027 return err;
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001028 case PERF_RECORD_HEADER_TRACING_DATA:
1029 /* setup for reading amidst mmap */
Jiri Olsacc9784bd2013-10-15 16:27:34 +02001030 lseek(fd, file_offset, SEEK_SET);
Adrian Hunter47c3d102013-07-04 16:20:21 +03001031 return tool->tracing_data(tool, event, session);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001032 case PERF_RECORD_HEADER_BUILD_ID:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001033 return tool->build_id(tool, event, session);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001034 case PERF_RECORD_FINISHED_ROUND:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001035 return tool->finished_round(tool, event, session);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001036 default:
1037 return -EINVAL;
1038 }
1039}
1040
Jiri Olsa268fb202012-05-30 14:23:43 +02001041static void event_swap(union perf_event *event, bool sample_id_all)
1042{
1043 perf_event__swap_op swap;
1044
1045 swap = perf_event__swap_ops[event->header.type];
1046 if (swap)
1047 swap(event, sample_id_all);
1048}
1049
David Aherne30b88a2013-08-05 21:41:33 -04001050static int perf_session__process_event(struct perf_session *session,
1051 union perf_event *event,
1052 struct perf_tool *tool,
1053 u64 file_offset)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001054{
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -02001055 struct perf_sample sample;
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001056 int ret;
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001057
Jiri Olsa268fb202012-05-30 14:23:43 +02001058 if (session->header.needs_swap)
Arnaldo Carvalho de Melo5e562472012-08-01 19:25:26 -03001059 event_swap(event, perf_evlist__sample_id_all(session->evlist));
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001060
Thomas Gleixner9aefcab2010-12-07 12:48:47 +00001061 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1062 return -EINVAL;
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001063
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001064 events_stats__inc(&session->stats, event->header.type);
Thomas Gleixner9aefcab2010-12-07 12:48:47 +00001065
1066 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001067 return perf_session__process_user_event(session, event, tool, file_offset);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001068
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001069 /*
1070 * For all kernel events we get the sample data
1071 */
Arnaldo Carvalho de Melo0807d2d2012-09-26 12:48:18 -03001072 ret = perf_evlist__parse_sample(session->evlist, event, &sample);
Frederic Weisbecker5538bec2011-05-22 02:17:22 +02001073 if (ret)
1074 return ret;
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001075
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001076 if (tool->ordered_samples) {
Thomas Gleixnere4c2df12010-12-07 12:48:50 +00001077 ret = perf_session_queue_event(session, event, &sample,
1078 file_offset);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001079 if (ret != -ETIME)
1080 return ret;
1081 }
1082
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001083 return perf_session_deliver_event(session, event, &sample, tool,
Thomas Gleixnerf74725d2010-12-07 12:48:53 +00001084 file_offset);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001085}
1086
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02001087void perf_event_header__bswap(struct perf_event_header *self)
1088{
1089 self->type = bswap_32(self->type);
1090 self->misc = bswap_16(self->misc);
1091 self->size = bswap_16(self->size);
1092}
1093
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -02001094struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1095{
Adrian Hunter314add62013-08-27 11:23:03 +03001096 return machine__findnew_thread(&session->machines.host, 0, pid);
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -02001097}
1098
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001099static struct thread *perf_session__register_idle_thread(struct perf_session *self)
1100{
1101 struct thread *thread = perf_session__findnew(self, 0);
1102
Frederic Weisbecker162f0be2013-09-11 16:18:24 +02001103 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001104 pr_err("problem inserting idle task.\n");
1105 thread = NULL;
1106 }
1107
1108 return thread;
1109}
1110
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001111static void perf_session__warn_about_errors(const struct perf_session *session,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001112 const struct perf_tool *tool)
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001113{
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001114 if (tool->lost == perf_event__process_lost &&
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001115 session->stats.nr_events[PERF_RECORD_LOST] != 0) {
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -02001116 ui__warning("Processed %d events and lost %d chunks!\n\n"
1117 "Check IO/CPU overload!\n\n",
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001118 session->stats.nr_events[0],
1119 session->stats.nr_events[PERF_RECORD_LOST]);
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001120 }
1121
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001122 if (session->stats.nr_unknown_events != 0) {
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001123 ui__warning("Found %u unknown events!\n\n"
1124 "Is this an older tool processing a perf.data "
1125 "file generated by a more recent tool?\n\n"
1126 "If that is not the case, consider "
1127 "reporting to linux-kernel@vger.kernel.org.\n\n",
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001128 session->stats.nr_unknown_events);
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001129 }
1130
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001131 if (session->stats.nr_unknown_id != 0) {
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001132 ui__warning("%u samples with id not present in the header\n",
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001133 session->stats.nr_unknown_id);
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001134 }
1135
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001136 if (session->stats.nr_invalid_chains != 0) {
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001137 ui__warning("Found invalid callchains!\n\n"
1138 "%u out of %u events were discarded for this reason.\n\n"
1139 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001140 session->stats.nr_invalid_chains,
1141 session->stats.nr_events[PERF_RECORD_SAMPLE]);
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001142 }
Joerg Roedel0c095712012-02-10 18:05:04 +01001143
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001144 if (session->stats.nr_unprocessable_samples != 0) {
Joerg Roedel0c095712012-02-10 18:05:04 +01001145 ui__warning("%u unprocessable samples recorded.\n"
1146 "Do you have a KVM guest running and not using 'perf kvm'?\n",
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001147 session->stats.nr_unprocessable_samples);
Joerg Roedel0c095712012-02-10 18:05:04 +01001148 }
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001149}
1150
Tom Zanussi8dc58102010-04-01 23:59:15 -05001151volatile int session_done;
1152
1153static int __perf_session__process_pipe_events(struct perf_session *self,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001154 struct perf_tool *tool)
Tom Zanussi8dc58102010-04-01 23:59:15 -05001155{
Jiri Olsacc9784bd2013-10-15 16:27:34 +02001156 int fd = perf_data_file__fd(self->file);
Stephane Eranian444d2862012-05-15 13:28:12 +02001157 union perf_event *event;
1158 uint32_t size, cur_size = 0;
1159 void *buf = NULL;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001160 int skip = 0;
1161 u64 head;
1162 int err;
1163 void *p;
1164
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001165 perf_tool__fill_defaults(tool);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001166
1167 head = 0;
Stephane Eranian444d2862012-05-15 13:28:12 +02001168 cur_size = sizeof(union perf_event);
1169
1170 buf = malloc(cur_size);
1171 if (!buf)
1172 return -errno;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001173more:
Stephane Eranian444d2862012-05-15 13:28:12 +02001174 event = buf;
Jiri Olsacc9784bd2013-10-15 16:27:34 +02001175 err = readn(fd, event, sizeof(struct perf_event_header));
Tom Zanussi8dc58102010-04-01 23:59:15 -05001176 if (err <= 0) {
1177 if (err == 0)
1178 goto done;
1179
1180 pr_err("failed to read event header\n");
1181 goto out_err;
1182 }
1183
1184 if (self->header.needs_swap)
Stephane Eranian444d2862012-05-15 13:28:12 +02001185 perf_event_header__bswap(&event->header);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001186
Stephane Eranian444d2862012-05-15 13:28:12 +02001187 size = event->header.size;
Adrian Hunter27389d72013-07-04 16:20:27 +03001188 if (size < sizeof(struct perf_event_header)) {
1189 pr_err("bad event header size\n");
1190 goto out_err;
1191 }
Tom Zanussi8dc58102010-04-01 23:59:15 -05001192
Stephane Eranian444d2862012-05-15 13:28:12 +02001193 if (size > cur_size) {
1194 void *new = realloc(buf, size);
1195 if (!new) {
1196 pr_err("failed to allocate memory to read event\n");
1197 goto out_err;
1198 }
1199 buf = new;
1200 cur_size = size;
1201 event = buf;
1202 }
1203 p = event;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001204 p += sizeof(struct perf_event_header);
1205
Tom Zanussi794e43b2010-05-05 00:27:40 -05001206 if (size - sizeof(struct perf_event_header)) {
Jiri Olsacc9784bd2013-10-15 16:27:34 +02001207 err = readn(fd, p, size - sizeof(struct perf_event_header));
Tom Zanussi794e43b2010-05-05 00:27:40 -05001208 if (err <= 0) {
1209 if (err == 0) {
1210 pr_err("unexpected end of event stream\n");
1211 goto done;
1212 }
Tom Zanussi8dc58102010-04-01 23:59:15 -05001213
Tom Zanussi794e43b2010-05-05 00:27:40 -05001214 pr_err("failed to read event data\n");
1215 goto out_err;
1216 }
Tom Zanussi8dc58102010-04-01 23:59:15 -05001217 }
1218
Stephane Eranian444d2862012-05-15 13:28:12 +02001219 if ((skip = perf_session__process_event(self, event, tool, head)) < 0) {
Jiri Olsa9389a462012-04-16 20:42:51 +02001220 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
Stephane Eranian444d2862012-05-15 13:28:12 +02001221 head, event->header.size, event->header.type);
Jiri Olsa9389a462012-04-16 20:42:51 +02001222 err = -EINVAL;
1223 goto out_err;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001224 }
1225
1226 head += size;
1227
Tom Zanussi8dc58102010-04-01 23:59:15 -05001228 if (skip > 0)
1229 head += skip;
1230
1231 if (!session_done())
1232 goto more;
1233done:
Adrian Hunter8c16b642013-10-18 15:29:02 +03001234 /* do the final flush for ordered samples */
1235 self->ordered_samples.next_flush = ULLONG_MAX;
1236 err = flush_sample_queue(self, tool);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001237out_err:
Stephane Eranian444d2862012-05-15 13:28:12 +02001238 free(buf);
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001239 perf_session__warn_about_errors(self, tool);
Thomas Gleixner020bb752010-11-30 17:49:53 +00001240 perf_session_free_sample_buffers(self);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001241 return err;
1242}
1243
Frederic Weisbecker998bedc2011-05-23 13:06:28 +02001244static union perf_event *
1245fetch_mmaped_event(struct perf_session *session,
1246 u64 head, size_t mmap_size, char *buf)
1247{
1248 union perf_event *event;
1249
1250 /*
1251 * Ensure we have enough space remaining to read
1252 * the size of the event in the headers.
1253 */
1254 if (head + sizeof(event->header) > mmap_size)
1255 return NULL;
1256
1257 event = (union perf_event *)(buf + head);
1258
1259 if (session->header.needs_swap)
1260 perf_event_header__bswap(&event->header);
1261
Adrian Hunter27389d72013-07-04 16:20:27 +03001262 if (head + event->header.size > mmap_size) {
1263 /* We're not fetching the event so swap back again */
1264 if (session->header.needs_swap)
1265 perf_event_header__bswap(&event->header);
Frederic Weisbecker998bedc2011-05-23 13:06:28 +02001266 return NULL;
Adrian Hunter27389d72013-07-04 16:20:27 +03001267 }
Frederic Weisbecker998bedc2011-05-23 13:06:28 +02001268
1269 return event;
1270}
1271
David Miller35d48dd2012-11-10 14:12:19 -05001272/*
1273 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1274 * slices. On 32bit we use 32MB.
1275 */
1276#if BITS_PER_LONG == 64
1277#define MMAP_SIZE ULLONG_MAX
1278#define NUM_MMAPS 1
1279#else
1280#define MMAP_SIZE (32 * 1024 * 1024ULL)
1281#define NUM_MMAPS 128
1282#endif
1283
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001284int __perf_session__process_events(struct perf_session *session,
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001285 u64 data_offset, u64 data_size,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001286 u64 file_size, struct perf_tool *tool)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001287{
Jiri Olsacc9784bd2013-10-15 16:27:34 +02001288 int fd = perf_data_file__fd(session->file);
Arnaldo Carvalho de Melo4d3001f2013-10-23 15:40:38 -03001289 u64 head, page_offset, file_offset, file_pos;
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001290 int err, mmap_prot, mmap_flags, map_idx = 0;
Arnaldo Carvalho de Melo0c1fe6b2012-10-06 14:57:10 -03001291 size_t mmap_size;
David Miller35d48dd2012-11-10 14:12:19 -05001292 char *buf, *mmaps[NUM_MMAPS];
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001293 union perf_event *event;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001294 uint32_t size;
Arnaldo Carvalho de Melo4d3001f2013-10-23 15:40:38 -03001295 struct ui_progress prog;
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001296
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001297 perf_tool__fill_defaults(tool);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001298
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001299 page_offset = page_size * (data_offset / page_size);
1300 file_offset = page_offset;
1301 head = data_offset - page_offset;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001302
Namhyung Kimb314e5c2013-09-30 17:19:48 +09001303 if (data_size && (data_offset + data_size < file_size))
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001304 file_size = data_offset + data_size;
1305
Arnaldo Carvalho de Melo4d3001f2013-10-23 15:40:38 -03001306 ui_progress__init(&prog, file_size, "Processing events...");
Thomas Gleixner55b44622010-11-30 17:49:46 +00001307
David Miller35d48dd2012-11-10 14:12:19 -05001308 mmap_size = MMAP_SIZE;
Thomas Gleixner55b44622010-11-30 17:49:46 +00001309 if (mmap_size > file_size)
1310 mmap_size = file_size;
1311
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001312 memset(mmaps, 0, sizeof(mmaps));
1313
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02001314 mmap_prot = PROT_READ;
1315 mmap_flags = MAP_SHARED;
1316
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001317 if (session->header.needs_swap) {
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02001318 mmap_prot |= PROT_WRITE;
1319 mmap_flags = MAP_PRIVATE;
1320 }
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001321remap:
Jiri Olsacc9784bd2013-10-15 16:27:34 +02001322 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd,
Thomas Gleixner55b44622010-11-30 17:49:46 +00001323 file_offset);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001324 if (buf == MAP_FAILED) {
1325 pr_err("failed to mmap file\n");
1326 err = -errno;
1327 goto out_err;
1328 }
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001329 mmaps[map_idx] = buf;
1330 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001331 file_pos = file_offset + head;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001332
1333more:
Frederic Weisbecker998bedc2011-05-23 13:06:28 +02001334 event = fetch_mmaped_event(session, head, mmap_size, buf);
1335 if (!event) {
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001336 if (mmaps[map_idx]) {
1337 munmap(mmaps[map_idx], mmap_size);
1338 mmaps[map_idx] = NULL;
1339 }
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001340
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001341 page_offset = page_size * (head / page_size);
1342 file_offset += page_offset;
1343 head -= page_offset;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001344 goto remap;
1345 }
1346
1347 size = event->header.size;
1348
Adrian Hunter27389d72013-07-04 16:20:27 +03001349 if (size < sizeof(struct perf_event_header) ||
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001350 perf_session__process_event(session, event, tool, file_pos) < 0) {
Jiri Olsa9389a462012-04-16 20:42:51 +02001351 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1352 file_offset + head, event->header.size,
1353 event->header.type);
1354 err = -EINVAL;
1355 goto out_err;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001356 }
1357
1358 head += size;
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001359 file_pos += size;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001360
Arnaldo Carvalho de Melo4d3001f2013-10-23 15:40:38 -03001361 ui_progress__update(&prog, size);
Thomas Gleixner55b44622010-11-30 17:49:46 +00001362
Arnaldo Carvalho de Melo33e940a2013-09-17 16:34:28 -03001363 if (session_done())
Adrian Hunter8c16b642013-10-18 15:29:02 +03001364 goto out;
Arnaldo Carvalho de Melo33e940a2013-09-17 16:34:28 -03001365
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001366 if (file_pos < file_size)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001367 goto more;
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001368
Adrian Hunter8c16b642013-10-18 15:29:02 +03001369out:
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +02001370 /* do the final flush for ordered samples */
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001371 session->ordered_samples.next_flush = ULLONG_MAX;
David Ahernd25380cd2012-08-26 12:24:41 -06001372 err = flush_sample_queue(session, tool);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001373out_err:
Namhyung Kima5580f32012-11-13 22:30:34 +09001374 ui_progress__finish();
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001375 perf_session__warn_about_errors(session, tool);
Thomas Gleixner020bb752010-11-30 17:49:53 +00001376 perf_session_free_sample_buffers(session);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001377 return err;
1378}
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001379
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001380int perf_session__process_events(struct perf_session *self,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001381 struct perf_tool *tool)
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001382{
Jiri Olsacc9784bd2013-10-15 16:27:34 +02001383 u64 size = perf_data_file__size(self->file);
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001384 int err;
1385
1386 if (perf_session__register_idle_thread(self) == NULL)
1387 return -ENOMEM;
1388
Jiri Olsacc9784bd2013-10-15 16:27:34 +02001389 if (!perf_data_file__is_pipe(self->file))
Tom Zanussi8dc58102010-04-01 23:59:15 -05001390 err = __perf_session__process_events(self,
1391 self->header.data_offset,
1392 self->header.data_size,
Jiri Olsacc9784bd2013-10-15 16:27:34 +02001393 size, tool);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001394 else
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001395 err = __perf_session__process_pipe_events(self, tool);
Dave Martin88ca8952010-07-27 11:46:12 -03001396
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001397 return err;
1398}
1399
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -03001400bool perf_session__has_traces(struct perf_session *session, const char *msg)
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001401{
David Ahern93ea01c2013-08-07 22:50:58 -04001402 struct perf_evsel *evsel;
1403
1404 list_for_each_entry(evsel, &session->evlist->entries, node) {
1405 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
1406 return true;
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001407 }
1408
David Ahern93ea01c2013-08-07 22:50:58 -04001409 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1410 return false;
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001411}
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001412
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001413int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
1414 const char *symbol_name, u64 addr)
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001415{
1416 char *bracket;
Arnaldo Carvalho de Melo9de89fe2010-02-03 16:52:00 -02001417 enum map_type i;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001418 struct ref_reloc_sym *ref;
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001419
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001420 ref = zalloc(sizeof(struct ref_reloc_sym));
1421 if (ref == NULL)
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001422 return -ENOMEM;
1423
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001424 ref->name = strdup(symbol_name);
1425 if (ref->name == NULL) {
1426 free(ref);
1427 return -ENOMEM;
1428 }
1429
1430 bracket = strchr(ref->name, ']');
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001431 if (bracket)
1432 *bracket = '\0';
1433
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001434 ref->addr = addr;
Arnaldo Carvalho de Melo9de89fe2010-02-03 16:52:00 -02001435
1436 for (i = 0; i < MAP__NR_TYPES; ++i) {
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001437 struct kmap *kmap = map__kmap(maps[i]);
1438 kmap->ref_reloc_sym = ref;
Arnaldo Carvalho de Melo9de89fe2010-02-03 16:52:00 -02001439 }
1440
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001441 return 0;
1442}
Arnaldo Carvalho de Melo1f626bc2010-05-09 19:57:08 -03001443
1444size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp)
1445{
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -03001446 return machines__fprintf_dsos(&self->machines, fp);
Arnaldo Carvalho de Melo1f626bc2010-05-09 19:57:08 -03001447}
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -03001448
1449size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp,
Arnaldo Carvalho de Melo417c2ff2012-12-07 09:53:58 -03001450 bool (skip)(struct dso *dso, int parm), int parm)
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -03001451{
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -03001452 return machines__fprintf_dsos_buildid(&self->machines, fp, skip, parm);
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -03001453}
Arnaldo Carvalho de Meloe248de32011-03-05 21:40:06 -03001454
1455size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
1456{
1457 struct perf_evsel *pos;
1458 size_t ret = fprintf(fp, "Aggregated stats:\n");
1459
Arnaldo Carvalho de Melo28a6b6a2012-12-18 16:24:46 -03001460 ret += events_stats__fprintf(&session->stats, fp);
Arnaldo Carvalho de Meloe248de32011-03-05 21:40:06 -03001461
1462 list_for_each_entry(pos, &session->evlist->entries, node) {
Arnaldo Carvalho de Melo7289f832012-06-12 12:34:58 -03001463 ret += fprintf(fp, "%s stats:\n", perf_evsel__name(pos));
Arnaldo Carvalho de Melo52168ee2012-12-18 16:02:17 -03001464 ret += events_stats__fprintf(&pos->hists.stats, fp);
Arnaldo Carvalho de Meloe248de32011-03-05 21:40:06 -03001465 }
1466
1467 return ret;
1468}
David Ahernc0230b22011-03-09 22:23:27 -07001469
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -02001470size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
1471{
1472 /*
1473 * FIXME: Here we have to actually print all the machines in this
1474 * session, not just the host...
1475 */
Arnaldo Carvalho de Melo876650e2012-12-18 19:15:48 -03001476 return machine__fprintf(&session->machines.host, fp);
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -02001477}
1478
David Ahern9cbdb702011-04-06 21:54:20 -06001479struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
1480 unsigned int type)
1481{
1482 struct perf_evsel *pos;
1483
1484 list_for_each_entry(pos, &session->evlist->entries, node) {
1485 if (pos->attr.type == type)
1486 return pos;
1487 }
1488 return NULL;
1489}
1490
Jiri Olsa71ad0f52012-08-07 15:20:46 +02001491void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
1492 struct perf_sample *sample, struct machine *machine,
David Ahern307cbb92013-08-07 22:50:53 -04001493 unsigned int print_opts, unsigned int stack_depth)
David Ahernc0230b22011-03-09 22:23:27 -07001494{
1495 struct addr_location al;
David Ahernc0230b22011-03-09 22:23:27 -07001496 struct callchain_cursor_node *node;
David Aherna6ffaf92013-08-07 22:50:51 -04001497 int print_ip = print_opts & PRINT_IP_OPT_IP;
1498 int print_sym = print_opts & PRINT_IP_OPT_SYM;
1499 int print_dso = print_opts & PRINT_IP_OPT_DSO;
1500 int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET;
David Ahernb0b35f02013-08-07 22:50:52 -04001501 int print_oneline = print_opts & PRINT_IP_OPT_ONELINE;
1502 char s = print_oneline ? ' ' : '\t';
David Ahernc0230b22011-03-09 22:23:27 -07001503
Adrian Huntere44baa32013-08-08 14:32:25 +03001504 if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
David Ahernc0230b22011-03-09 22:23:27 -07001505 error("problem processing %d event, skipping it.\n",
1506 event->header.type);
1507 return;
1508 }
1509
1510 if (symbol_conf.use_callchain && sample->callchain) {
1511
Jiri Olsa71ad0f52012-08-07 15:20:46 +02001512 if (machine__resolve_callchain(machine, evsel, al.thread,
Waiman Long91e95612013-10-18 10:38:48 -04001513 sample, NULL, NULL,
1514 PERF_MAX_STACK_DEPTH) != 0) {
David Ahernc0230b22011-03-09 22:23:27 -07001515 if (verbose)
1516 error("Failed to resolve callchain. Skipping\n");
1517 return;
1518 }
Namhyung Kim47260642012-05-31 14:43:26 +09001519 callchain_cursor_commit(&callchain_cursor);
David Ahernc0230b22011-03-09 22:23:27 -07001520
David Ahern307cbb92013-08-07 22:50:53 -04001521 while (stack_depth) {
Namhyung Kim47260642012-05-31 14:43:26 +09001522 node = callchain_cursor_current(&callchain_cursor);
David Ahernc0230b22011-03-09 22:23:27 -07001523 if (!node)
1524 break;
1525
David Aherna6ffaf92013-08-07 22:50:51 -04001526 if (print_ip)
David Ahernb0b35f02013-08-07 22:50:52 -04001527 printf("%c%16" PRIx64, s, node->ip);
David Aherna6ffaf92013-08-07 22:50:51 -04001528
David Ahern787bef12011-05-27 14:28:43 -06001529 if (print_sym) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001530 printf(" ");
David Ahern251f4262013-07-28 09:14:34 -06001531 if (print_symoffset) {
1532 al.addr = node->ip;
David Ahern0b8c25d2013-07-28 09:48:32 -06001533 al.map = node->map;
David Ahern251f4262013-07-28 09:14:34 -06001534 symbol__fprintf_symname_offs(node->sym, &al, stdout);
1535 } else
1536 symbol__fprintf_symname(node->sym, stdout);
David Ahern610723f2011-05-27 14:28:44 -06001537 }
David Ahern251f4262013-07-28 09:14:34 -06001538
David Ahern610723f2011-05-27 14:28:44 -06001539 if (print_dso) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001540 printf(" (");
David Ahern52deff72012-05-29 22:58:26 -06001541 map__fprintf_dsoname(node->map, stdout);
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001542 printf(")");
David Ahern787bef12011-05-27 14:28:43 -06001543 }
David Ahernb0b35f02013-08-07 22:50:52 -04001544
1545 if (!print_oneline)
1546 printf("\n");
David Ahernc0230b22011-03-09 22:23:27 -07001547
Namhyung Kim47260642012-05-31 14:43:26 +09001548 callchain_cursor_advance(&callchain_cursor);
David Ahern307cbb92013-08-07 22:50:53 -04001549
1550 stack_depth--;
David Ahernc0230b22011-03-09 22:23:27 -07001551 }
1552
1553 } else {
David Aherna6ffaf92013-08-07 22:50:51 -04001554 if (print_ip)
1555 printf("%16" PRIx64, sample->ip);
1556
David Ahern787bef12011-05-27 14:28:43 -06001557 if (print_sym) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001558 printf(" ");
Akihiro Nagaia978f2a2012-01-30 13:43:15 +09001559 if (print_symoffset)
1560 symbol__fprintf_symname_offs(al.sym, &al,
1561 stdout);
1562 else
1563 symbol__fprintf_symname(al.sym, stdout);
David Ahern610723f2011-05-27 14:28:44 -06001564 }
1565
1566 if (print_dso) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001567 printf(" (");
1568 map__fprintf_dsoname(al.map, stdout);
1569 printf(")");
David Ahern787bef12011-05-27 14:28:43 -06001570 }
David Ahernc0230b22011-03-09 22:23:27 -07001571 }
1572}
Anton Blanchard5d67be92011-07-04 21:57:50 +10001573
1574int perf_session__cpu_bitmap(struct perf_session *session,
1575 const char *cpu_list, unsigned long *cpu_bitmap)
1576{
1577 int i;
1578 struct cpu_map *map;
1579
1580 for (i = 0; i < PERF_TYPE_MAX; ++i) {
1581 struct perf_evsel *evsel;
1582
1583 evsel = perf_session__find_first_evtype(session, i);
1584 if (!evsel)
1585 continue;
1586
1587 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
1588 pr_err("File does not contain CPU events. "
1589 "Remove -c option to proceed.\n");
1590 return -1;
1591 }
1592 }
1593
1594 map = cpu_map__new(cpu_list);
David Ahern47fbe532011-11-13 10:45:27 -07001595 if (map == NULL) {
1596 pr_err("Invalid cpu_list\n");
1597 return -1;
1598 }
Anton Blanchard5d67be92011-07-04 21:57:50 +10001599
1600 for (i = 0; i < map->nr; i++) {
1601 int cpu = map->map[i];
1602
1603 if (cpu >= MAX_NR_CPUS) {
1604 pr_err("Requested CPU %d too large. "
1605 "Consider raising MAX_NR_CPUS\n", cpu);
1606 return -1;
1607 }
1608
1609 set_bit(cpu, cpu_bitmap);
1610 }
1611
1612 return 0;
1613}
Stephane Eranianfbe96f22011-09-30 15:40:40 +02001614
1615void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
1616 bool full)
1617{
Jiri Olsacc9784bd2013-10-15 16:27:34 +02001618 int fd = perf_data_file__fd(session->file);
Stephane Eranianfbe96f22011-09-30 15:40:40 +02001619 struct stat st;
1620 int ret;
1621
1622 if (session == NULL || fp == NULL)
1623 return;
1624
Jiri Olsacc9784bd2013-10-15 16:27:34 +02001625 ret = fstat(fd, &st);
Stephane Eranianfbe96f22011-09-30 15:40:40 +02001626 if (ret == -1)
1627 return;
1628
1629 fprintf(fp, "# ========\n");
1630 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
1631 perf_header__fprintf_info(session, fp, full);
1632 fprintf(fp, "# ========\n#\n");
1633}
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001634
1635
1636int __perf_session__set_tracepoints_handlers(struct perf_session *session,
1637 const struct perf_evsel_str_handler *assocs,
1638 size_t nr_assocs)
1639{
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001640 struct perf_evsel *evsel;
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001641 size_t i;
1642 int err;
1643
1644 for (i = 0; i < nr_assocs; i++) {
Arnaldo Carvalho de Meloccf53ea2013-09-06 15:19:01 -03001645 /*
1646 * Adding a handler for an event not in the session,
1647 * just ignore it.
1648 */
1649 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001650 if (evsel == NULL)
Arnaldo Carvalho de Meloccf53ea2013-09-06 15:19:01 -03001651 continue;
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001652
1653 err = -EEXIST;
1654 if (evsel->handler.func != NULL)
Arnaldo Carvalho de Meloccf53ea2013-09-06 15:19:01 -03001655 goto out;
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001656 evsel->handler.func = assocs[i].handler;
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001657 }
1658
1659 err = 0;
1660out:
1661 return err;
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001662}