blob: 8d04dfbc205c18310cdf88a84327e1e161dc6c02 [file] [log] [blame]
Xiao Guangrongb8f46c52010-02-03 11:53:14 +08001#define _FILE_OFFSET_BITS 64
2
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02003#include <linux/kernel.h>
4
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02005#include <byteswap.h>
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02006#include <unistd.h>
7#include <sys/types.h>
Arnaldo Carvalho de Meloa41794c2010-05-18 18:29:23 -03008#include <sys/mman.h>
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -02009
Arnaldo Carvalho de Meloe248de32011-03-05 21:40:06 -030010#include "evlist.h"
11#include "evsel.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020012#include "session.h"
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -020013#include "tool.h"
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -020014#include "sort.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020015#include "util.h"
Anton Blanchard5d67be92011-07-04 21:57:50 +100016#include "cpumap.h"
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -030017#include "event-parse.h"
Jiri Olsa0f6a3012012-08-07 15:20:45 +020018#include "perf_regs.h"
Jiri Olsa71ad0f52012-08-07 15:20:46 +020019#include "unwind.h"
Jiri Olsa7dbf4dc2012-09-10 18:50:19 +020020#include "vdso.h"
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020021
22static int perf_session__open(struct perf_session *self, bool force)
23{
24 struct stat input_stat;
25
Tom Zanussi8dc58102010-04-01 23:59:15 -050026 if (!strcmp(self->filename, "-")) {
27 self->fd_pipe = true;
28 self->fd = STDIN_FILENO;
29
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -030030 if (perf_session__read_header(self, self->fd) < 0)
Stephane Eranian69996df2012-02-09 23:21:06 +010031 pr_err("incompatible file format (rerun with -v to learn more)");
Tom Zanussi8dc58102010-04-01 23:59:15 -050032
33 return 0;
34 }
35
Xiao Guangrongf887f302010-02-04 16:46:42 +080036 self->fd = open(self->filename, O_RDONLY);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020037 if (self->fd < 0) {
Andy Isaacson0f2c3de2010-06-11 20:36:15 -070038 int err = errno;
39
40 pr_err("failed to open %s: %s", self->filename, strerror(err));
41 if (err == ENOENT && !strcmp(self->filename, "perf.data"))
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020042 pr_err(" (try 'perf record' first)");
43 pr_err("\n");
44 return -errno;
45 }
46
47 if (fstat(self->fd, &input_stat) < 0)
48 goto out_close;
49
50 if (!force && input_stat.st_uid && (input_stat.st_uid != geteuid())) {
51 pr_err("file %s not owned by current user or root\n",
52 self->filename);
53 goto out_close;
54 }
55
56 if (!input_stat.st_size) {
57 pr_info("zero-sized file (%s), nothing to do!\n",
58 self->filename);
59 goto out_close;
60 }
61
Arnaldo Carvalho de Meloa91e5432011-03-10 11:15:54 -030062 if (perf_session__read_header(self, self->fd) < 0) {
Stephane Eranian69996df2012-02-09 23:21:06 +010063 pr_err("incompatible file format (rerun with -v to learn more)");
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020064 goto out_close;
65 }
66
Arnaldo Carvalho de Meloc2a70652011-06-02 11:04:54 -030067 if (!perf_evlist__valid_sample_type(self->evlist)) {
68 pr_err("non matching sample_type");
69 goto out_close;
70 }
71
72 if (!perf_evlist__valid_sample_id_all(self->evlist)) {
73 pr_err("non matching sample_id_all");
74 goto out_close;
75 }
76
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -020077 self->size = input_stat.st_size;
78 return 0;
79
80out_close:
81 close(self->fd);
82 self->fd = -1;
83 return -1;
84}
85
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -030086void perf_session__set_id_hdr_size(struct perf_session *session)
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -020087{
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -030088 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
89
90 session->host_machine.id_hdr_size = id_hdr_size;
91 machines__set_id_hdr_size(&session->machines, id_hdr_size);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -020092}
93
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080094int perf_session__create_kernel_maps(struct perf_session *self)
95{
Arnaldo Carvalho de Melod118f8b2010-05-10 12:51:05 -030096 int ret = machine__create_kernel_maps(&self->host_machine);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080097
Zhang, Yanmina1645ce2010-04-19 13:32:50 +080098 if (ret >= 0)
Arnaldo Carvalho de Melod118f8b2010-05-10 12:51:05 -030099 ret = machines__create_guest_kernel_maps(&self->machines);
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800100 return ret;
101}
102
Arnaldo Carvalho de Melo076c6e452010-08-02 18:18:28 -0300103static void perf_session__destroy_kernel_maps(struct perf_session *self)
104{
105 machine__destroy_kernel_maps(&self->host_machine);
106 machines__destroy_guest_kernel_maps(&self->machines);
107}
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);
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300131 self->machines = RB_ROOT;
Tom Zanussi454c4072010-05-01 01:41:20 -0500132 self->repipe = repipe;
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000133 INIT_LIST_HEAD(&self->ordered_samples.samples);
Thomas Gleixner020bb752010-11-30 17:49:53 +0000134 INIT_LIST_HEAD(&self->ordered_samples.sample_cache);
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000135 INIT_LIST_HEAD(&self->ordered_samples.to_free);
Arnaldo Carvalho de Melo1f626bc2010-05-09 19:57:08 -0300136 machine__init(&self->host_machine, "", HOST_KERNEL_ID);
Jiri Olsa4bf9ce12012-03-22 14:37:26 +0100137 hists__init(&self->hists);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200138
Arnaldo Carvalho de Melo64abebf72010-01-27 21:05:52 -0200139 if (mode == O_RDONLY) {
140 if (perf_session__open(self, force) < 0)
141 goto out_delete;
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -0300142 perf_session__set_id_hdr_size(self);
Arnaldo Carvalho de Melo64abebf72010-01-27 21:05:52 -0200143 } else if (mode == O_WRONLY) {
144 /*
145 * In O_RDONLY mode this will be performed when reading the
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200146 * kernel MMAP event, in perf_event__process_mmap().
Arnaldo Carvalho de Melo64abebf72010-01-27 21:05:52 -0200147 */
148 if (perf_session__create_kernel_maps(self) < 0)
149 goto out_delete;
150 }
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -0200151
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200152 if (tool && tool->ordering_requires_timestamps &&
Arnaldo Carvalho de Melo5e562472012-08-01 19:25:26 -0300153 tool->ordered_samples && !perf_evlist__sample_id_all(self->evlist)) {
Ian Munsie21ef97f2010-12-10 14:09:16 +1100154 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200155 tool->ordered_samples = false;
Ian Munsie21ef97f2010-12-10 14:09:16 +1100156 }
157
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200158out:
159 return self;
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200160out_delete:
161 perf_session__delete(self);
162 return NULL;
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200163}
164
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200165static void machine__delete_dead_threads(struct machine *machine)
Arnaldo Carvalho de Melod65a4582010-07-30 18:31:28 -0300166{
167 struct thread *n, *t;
168
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200169 list_for_each_entry_safe(t, n, &machine->dead_threads, node) {
Arnaldo Carvalho de Melod65a4582010-07-30 18:31:28 -0300170 list_del(&t->node);
171 thread__delete(t);
172 }
173}
174
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200175static void perf_session__delete_dead_threads(struct perf_session *session)
176{
177 machine__delete_dead_threads(&session->host_machine);
178}
179
180static void machine__delete_threads(struct machine *self)
Arnaldo Carvalho de Melod65a4582010-07-30 18:31:28 -0300181{
182 struct rb_node *nd = rb_first(&self->threads);
183
184 while (nd) {
185 struct thread *t = rb_entry(nd, struct thread, rb_node);
186
187 rb_erase(&t->rb_node, &self->threads);
188 nd = rb_next(nd);
189 thread__delete(t);
190 }
191}
192
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200193static void perf_session__delete_threads(struct perf_session *session)
194{
195 machine__delete_threads(&session->host_machine);
196}
197
Namhyung Kim03cd2092012-11-21 13:43:19 +0900198static void perf_session_env__delete(struct perf_session_env *env)
199{
200 free(env->hostname);
201 free(env->os_release);
202 free(env->version);
203 free(env->arch);
204 free(env->cpu_desc);
205 free(env->cpuid);
206
207 free(env->cmdline);
208 free(env->sibling_cores);
209 free(env->sibling_threads);
210 free(env->numa_nodes);
211 free(env->pmu_mappings);
212}
213
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200214void perf_session__delete(struct perf_session *self)
215{
Arnaldo Carvalho de Melo076c6e452010-08-02 18:18:28 -0300216 perf_session__destroy_kernel_maps(self);
Arnaldo Carvalho de Melod65a4582010-07-30 18:31:28 -0300217 perf_session__delete_dead_threads(self);
218 perf_session__delete_threads(self);
Namhyung Kim03cd2092012-11-21 13:43:19 +0900219 perf_session_env__delete(&self->header.env);
Arnaldo Carvalho de Melod65a4582010-07-30 18:31:28 -0300220 machine__exit(&self->host_machine);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200221 close(self->fd);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200222 free(self);
Jiri Olsa7dbf4dc2012-09-10 18:50:19 +0200223 vdso__exit();
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200224}
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200225
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200226void machine__remove_thread(struct machine *self, struct thread *th)
Arnaldo Carvalho de Melo720a3ae2010-06-17 08:37:44 -0300227{
Arnaldo Carvalho de Melo70597f22010-08-02 18:59:28 -0300228 self->last_match = NULL;
Arnaldo Carvalho de Melo720a3ae2010-06-17 08:37:44 -0300229 rb_erase(&th->rb_node, &self->threads);
230 /*
231 * We may have references to this thread, for instance in some hist_entry
232 * instances, so just move them to a separate list.
233 */
234 list_add_tail(&th->node, &self->dead_threads);
235}
236
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200237static bool symbol__match_parent_regex(struct symbol *sym)
238{
239 if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
240 return 1;
241
242 return 0;
243}
244
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +0100245static const u8 cpumodes[] = {
246 PERF_RECORD_MISC_USER,
247 PERF_RECORD_MISC_KERNEL,
248 PERF_RECORD_MISC_GUEST_USER,
249 PERF_RECORD_MISC_GUEST_KERNEL
250};
251#define NCPUMODES (sizeof(cpumodes)/sizeof(u8))
252
253static void ip__resolve_ams(struct machine *self, struct thread *thread,
254 struct addr_map_symbol *ams,
255 u64 ip)
256{
257 struct addr_location al;
258 size_t i;
259 u8 m;
260
261 memset(&al, 0, sizeof(al));
262
263 for (i = 0; i < NCPUMODES; i++) {
264 m = cpumodes[i];
265 /*
266 * We cannot use the header.misc hint to determine whether a
267 * branch stack address is user, kernel, guest, hypervisor.
268 * Branches may straddle the kernel/user/hypervisor boundaries.
269 * Thus, we have to try consecutively until we find a match
270 * or else, the symbol is unknown
271 */
272 thread__find_addr_location(thread, self, m, MAP__FUNCTION,
273 ip, &al, NULL);
274 if (al.sym)
275 goto found;
276 }
277found:
278 ams->addr = ip;
Stephane Eraniana68c2c52012-03-08 23:47:48 +0100279 ams->al_addr = al.addr;
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +0100280 ams->sym = al.sym;
281 ams->map = al.map;
282}
283
284struct branch_info *machine__resolve_bstack(struct machine *self,
285 struct thread *thr,
286 struct branch_stack *bs)
287{
288 struct branch_info *bi;
289 unsigned int i;
290
291 bi = calloc(bs->nr, sizeof(struct branch_info));
292 if (!bi)
293 return NULL;
294
295 for (i = 0; i < bs->nr; i++) {
296 ip__resolve_ams(self, thr, &bi[i].to, bs->entries[i].to);
297 ip__resolve_ams(self, thr, &bi[i].from, bs->entries[i].from);
298 bi[i].flags = bs->entries[i].flags;
299 }
300 return bi;
301}
302
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200303static int machine__resolve_callchain_sample(struct machine *machine,
304 struct thread *thread,
305 struct ip_callchain *chain,
306 struct symbol **parent)
307
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200308{
309 u8 cpumode = PERF_RECORD_MISC_USER;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200310 unsigned int i;
Frederic Weisbecker1b3a0e92011-01-14 04:51:58 +0100311 int err;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200312
Namhyung Kim47260642012-05-31 14:43:26 +0900313 callchain_cursor_reset(&callchain_cursor);
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200314
Namhyung Kim114067b2012-05-31 14:43:27 +0900315 if (chain->nr > PERF_MAX_STACK_DEPTH) {
316 pr_warning("corrupted callchain. skipping...\n");
317 return 0;
318 }
319
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200320 for (i = 0; i < chain->nr; i++) {
Sam Liaod797fdc2011-06-07 23:49:46 +0800321 u64 ip;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200322 struct addr_location al;
323
Sam Liaod797fdc2011-06-07 23:49:46 +0800324 if (callchain_param.order == ORDER_CALLEE)
325 ip = chain->ips[i];
326 else
327 ip = chain->ips[chain->nr - i - 1];
328
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200329 if (ip >= PERF_CONTEXT_MAX) {
330 switch (ip) {
331 case PERF_CONTEXT_HV:
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200332 cpumode = PERF_RECORD_MISC_HYPERVISOR;
333 break;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200334 case PERF_CONTEXT_KERNEL:
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200335 cpumode = PERF_RECORD_MISC_KERNEL;
336 break;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200337 case PERF_CONTEXT_USER:
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200338 cpumode = PERF_RECORD_MISC_USER;
339 break;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200340 default:
Namhyung Kim114067b2012-05-31 14:43:27 +0900341 pr_debug("invalid callchain context: "
342 "%"PRId64"\n", (s64) ip);
343 /*
344 * It seems the callchain is corrupted.
345 * Discard all.
346 */
347 callchain_cursor_reset(&callchain_cursor);
348 return 0;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200349 }
350 continue;
351 }
352
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800353 al.filtered = false;
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200354 thread__find_addr_location(thread, machine, cpumode,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200355 MAP__FUNCTION, ip, &al, NULL);
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200356 if (al.sym != NULL) {
357 if (sort__has_parent && !*parent &&
358 symbol__match_parent_regex(al.sym))
359 *parent = al.sym;
Arnaldo Carvalho de Melod599db32009-12-15 20:04:42 -0200360 if (!symbol_conf.use_callchain)
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200361 break;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200362 }
Frederic Weisbecker1b3a0e92011-01-14 04:51:58 +0100363
Namhyung Kim47260642012-05-31 14:43:26 +0900364 err = callchain_cursor_append(&callchain_cursor,
Frederic Weisbecker1b3a0e92011-01-14 04:51:58 +0100365 ip, al.map, al.sym);
366 if (err)
367 return err;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200368 }
369
Frederic Weisbecker1b3a0e92011-01-14 04:51:58 +0100370 return 0;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200371}
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200372
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200373static int unwind_entry(struct unwind_entry *entry, void *arg)
374{
375 struct callchain_cursor *cursor = arg;
376 return callchain_cursor_append(cursor, entry->ip,
377 entry->map, entry->sym);
378}
379
380int machine__resolve_callchain(struct machine *machine,
381 struct perf_evsel *evsel,
382 struct thread *thread,
383 struct perf_sample *sample,
384 struct symbol **parent)
385
386{
387 int ret;
388
389 callchain_cursor_reset(&callchain_cursor);
390
391 ret = machine__resolve_callchain_sample(machine, thread,
392 sample->callchain, parent);
393 if (ret)
394 return ret;
395
396 /* Can we do dwarf post unwind? */
397 if (!((evsel->attr.sample_type & PERF_SAMPLE_REGS_USER) &&
398 (evsel->attr.sample_type & PERF_SAMPLE_STACK_USER)))
399 return 0;
400
Jiri Olsabdde3712012-09-10 18:50:16 +0200401 /* Bail out if nothing was captured. */
402 if ((!sample->user_regs.regs) ||
403 (!sample->user_stack.size))
404 return 0;
405
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200406 return unwind__get_entries(unwind_entry, &callchain_cursor, machine,
407 thread, evsel->attr.sample_regs_user,
408 sample);
409
410}
411
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300412static int process_event_synth_tracing_data_stub(union perf_event *event
413 __maybe_unused,
414 struct perf_session *session
415 __maybe_unused)
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200416{
417 dump_printf(": unhandled!\n");
418 return 0;
419}
420
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300421static int process_event_synth_attr_stub(union perf_event *event __maybe_unused,
422 struct perf_evlist **pevlist
423 __maybe_unused)
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -0200424{
425 dump_printf(": unhandled!\n");
426 return 0;
427}
428
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300429static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
430 union perf_event *event __maybe_unused,
431 struct perf_sample *sample __maybe_unused,
432 struct perf_evsel *evsel __maybe_unused,
433 struct machine *machine __maybe_unused)
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300434{
435 dump_printf(": unhandled!\n");
436 return 0;
437}
438
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300439static int process_event_stub(struct perf_tool *tool __maybe_unused,
440 union perf_event *event __maybe_unused,
441 struct perf_sample *sample __maybe_unused,
442 struct machine *machine __maybe_unused)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200443{
444 dump_printf(": unhandled!\n");
445 return 0;
446}
447
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300448static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
449 union perf_event *event __maybe_unused,
450 struct perf_session *perf_session
451 __maybe_unused)
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200452{
453 dump_printf(": unhandled!\n");
454 return 0;
455}
456
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300457static int process_event_type_stub(struct perf_tool *tool __maybe_unused,
458 union perf_event *event __maybe_unused)
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200459{
460 dump_printf(": unhandled!\n");
461 return 0;
462}
463
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200464static int process_finished_round(struct perf_tool *tool,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200465 union perf_event *event,
466 struct perf_session *session);
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200467
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200468static void perf_tool__fill_defaults(struct perf_tool *tool)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200469{
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200470 if (tool->sample == NULL)
471 tool->sample = process_event_sample_stub;
472 if (tool->mmap == NULL)
473 tool->mmap = process_event_stub;
474 if (tool->comm == NULL)
475 tool->comm = process_event_stub;
476 if (tool->fork == NULL)
477 tool->fork = process_event_stub;
478 if (tool->exit == NULL)
479 tool->exit = process_event_stub;
480 if (tool->lost == NULL)
481 tool->lost = perf_event__process_lost;
482 if (tool->read == NULL)
483 tool->read = process_event_sample_stub;
484 if (tool->throttle == NULL)
485 tool->throttle = process_event_stub;
486 if (tool->unthrottle == NULL)
487 tool->unthrottle = process_event_stub;
488 if (tool->attr == NULL)
489 tool->attr = process_event_synth_attr_stub;
490 if (tool->event_type == NULL)
491 tool->event_type = process_event_type_stub;
492 if (tool->tracing_data == NULL)
493 tool->tracing_data = process_event_synth_tracing_data_stub;
494 if (tool->build_id == NULL)
495 tool->build_id = process_finished_round_stub;
496 if (tool->finished_round == NULL) {
497 if (tool->ordered_samples)
498 tool->finished_round = process_finished_round;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200499 else
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200500 tool->finished_round = process_finished_round_stub;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200501 }
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200502}
David Ahern80c01202012-06-08 11:47:51 -0300503
504void mem_bswap_32(void *src, int byte_size)
505{
506 u32 *m = src;
507 while (byte_size > 0) {
508 *m = bswap_32(*m);
509 byte_size -= sizeof(u32);
510 ++m;
511 }
512}
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200513
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200514void mem_bswap_64(void *src, int byte_size)
515{
516 u64 *m = src;
517
518 while (byte_size > 0) {
519 *m = bswap_64(*m);
520 byte_size -= sizeof(u64);
521 ++m;
522 }
523}
524
Jiri Olsa268fb202012-05-30 14:23:43 +0200525static void swap_sample_id_all(union perf_event *event, void *data)
526{
527 void *end = (void *) event + event->header.size;
528 int size = end - data;
529
530 BUG_ON(size % sizeof(u64));
531 mem_bswap_64(data, size);
532}
533
534static void perf_event__all64_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300535 bool sample_id_all __maybe_unused)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200536{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200537 struct perf_event_header *hdr = &event->header;
538 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200539}
540
Jiri Olsa268fb202012-05-30 14:23:43 +0200541static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200542{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200543 event->comm.pid = bswap_32(event->comm.pid);
544 event->comm.tid = bswap_32(event->comm.tid);
Jiri Olsa268fb202012-05-30 14:23:43 +0200545
546 if (sample_id_all) {
547 void *data = &event->comm.comm;
548
Irina Tirdea9ac3e482012-09-11 01:15:01 +0300549 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
Jiri Olsa268fb202012-05-30 14:23:43 +0200550 swap_sample_id_all(event, data);
551 }
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200552}
553
Jiri Olsa268fb202012-05-30 14:23:43 +0200554static void perf_event__mmap_swap(union perf_event *event,
555 bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200556{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200557 event->mmap.pid = bswap_32(event->mmap.pid);
558 event->mmap.tid = bswap_32(event->mmap.tid);
559 event->mmap.start = bswap_64(event->mmap.start);
560 event->mmap.len = bswap_64(event->mmap.len);
561 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
Jiri Olsa268fb202012-05-30 14:23:43 +0200562
563 if (sample_id_all) {
564 void *data = &event->mmap.filename;
565
Irina Tirdea9ac3e482012-09-11 01:15:01 +0300566 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
Jiri Olsa268fb202012-05-30 14:23:43 +0200567 swap_sample_id_all(event, data);
568 }
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200569}
570
Jiri Olsa268fb202012-05-30 14:23:43 +0200571static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200572{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200573 event->fork.pid = bswap_32(event->fork.pid);
574 event->fork.tid = bswap_32(event->fork.tid);
575 event->fork.ppid = bswap_32(event->fork.ppid);
576 event->fork.ptid = bswap_32(event->fork.ptid);
577 event->fork.time = bswap_64(event->fork.time);
Jiri Olsa268fb202012-05-30 14:23:43 +0200578
579 if (sample_id_all)
580 swap_sample_id_all(event, &event->fork + 1);
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200581}
582
Jiri Olsa268fb202012-05-30 14:23:43 +0200583static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200584{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200585 event->read.pid = bswap_32(event->read.pid);
586 event->read.tid = bswap_32(event->read.tid);
587 event->read.value = bswap_64(event->read.value);
588 event->read.time_enabled = bswap_64(event->read.time_enabled);
589 event->read.time_running = bswap_64(event->read.time_running);
590 event->read.id = bswap_64(event->read.id);
Jiri Olsa268fb202012-05-30 14:23:43 +0200591
592 if (sample_id_all)
593 swap_sample_id_all(event, &event->read + 1);
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200594}
595
Jiri Olsae108c662012-05-16 08:59:03 +0200596static u8 revbyte(u8 b)
597{
598 int rev = (b >> 4) | ((b & 0xf) << 4);
599 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
600 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
601 return (u8) rev;
602}
603
604/*
605 * XXX this is hack in attempt to carry flags bitfield
606 * throught endian village. ABI says:
607 *
608 * Bit-fields are allocated from right to left (least to most significant)
609 * on little-endian implementations and from left to right (most to least
610 * significant) on big-endian implementations.
611 *
612 * The above seems to be byte specific, so we need to reverse each
613 * byte of the bitfield. 'Internet' also says this might be implementation
614 * specific and we probably need proper fix and carry perf_event_attr
615 * bitfield flags in separate data file FEAT_ section. Thought this seems
616 * to work for now.
617 */
618static void swap_bitfield(u8 *p, unsigned len)
619{
620 unsigned i;
621
622 for (i = 0; i < len; i++) {
623 *p = revbyte(*p);
624 p++;
625 }
626}
627
David Aherneda39132011-07-15 12:34:09 -0600628/* exported for swapping attributes in file header */
629void perf_event__attr_swap(struct perf_event_attr *attr)
630{
631 attr->type = bswap_32(attr->type);
632 attr->size = bswap_32(attr->size);
633 attr->config = bswap_64(attr->config);
634 attr->sample_period = bswap_64(attr->sample_period);
635 attr->sample_type = bswap_64(attr->sample_type);
636 attr->read_format = bswap_64(attr->read_format);
637 attr->wakeup_events = bswap_32(attr->wakeup_events);
638 attr->bp_type = bswap_32(attr->bp_type);
639 attr->bp_addr = bswap_64(attr->bp_addr);
640 attr->bp_len = bswap_64(attr->bp_len);
Jiri Olsae108c662012-05-16 08:59:03 +0200641
642 swap_bitfield((u8 *) (&attr->read_format + 1), sizeof(u64));
David Aherneda39132011-07-15 12:34:09 -0600643}
644
Jiri Olsa268fb202012-05-30 14:23:43 +0200645static void perf_event__hdr_attr_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300646 bool sample_id_all __maybe_unused)
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500647{
648 size_t size;
649
David Aherneda39132011-07-15 12:34:09 -0600650 perf_event__attr_swap(&event->attr.attr);
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500651
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200652 size = event->header.size;
653 size -= (void *)&event->attr.id - (void *)event;
654 mem_bswap_64(event->attr.id, size);
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500655}
656
Jiri Olsa268fb202012-05-30 14:23:43 +0200657static void perf_event__event_type_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300658 bool sample_id_all __maybe_unused)
Tom Zanussicd19a032010-04-01 23:59:20 -0500659{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200660 event->event_type.event_type.event_id =
661 bswap_64(event->event_type.event_type.event_id);
Tom Zanussicd19a032010-04-01 23:59:20 -0500662}
663
Jiri Olsa268fb202012-05-30 14:23:43 +0200664static void perf_event__tracing_data_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300665 bool sample_id_all __maybe_unused)
Tom Zanussi92155452010-04-01 23:59:21 -0500666{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200667 event->tracing_data.size = bswap_32(event->tracing_data.size);
Tom Zanussi92155452010-04-01 23:59:21 -0500668}
669
Jiri Olsa268fb202012-05-30 14:23:43 +0200670typedef void (*perf_event__swap_op)(union perf_event *event,
671 bool sample_id_all);
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200672
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200673static perf_event__swap_op perf_event__swap_ops[] = {
674 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
675 [PERF_RECORD_COMM] = perf_event__comm_swap,
676 [PERF_RECORD_FORK] = perf_event__task_swap,
677 [PERF_RECORD_EXIT] = perf_event__task_swap,
678 [PERF_RECORD_LOST] = perf_event__all64_swap,
679 [PERF_RECORD_READ] = perf_event__read_swap,
680 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
David Aherneda39132011-07-15 12:34:09 -0600681 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200682 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
683 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
684 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
685 [PERF_RECORD_HEADER_MAX] = NULL,
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200686};
687
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200688struct sample_queue {
689 u64 timestamp;
Thomas Gleixnere4c2df12010-12-07 12:48:50 +0000690 u64 file_offset;
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200691 union perf_event *event;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200692 struct list_head list;
693};
694
Thomas Gleixner020bb752010-11-30 17:49:53 +0000695static void perf_session_free_sample_buffers(struct perf_session *session)
696{
697 struct ordered_samples *os = &session->ordered_samples;
698
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000699 while (!list_empty(&os->to_free)) {
Thomas Gleixner020bb752010-11-30 17:49:53 +0000700 struct sample_queue *sq;
701
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000702 sq = list_entry(os->to_free.next, struct sample_queue, list);
Thomas Gleixner020bb752010-11-30 17:49:53 +0000703 list_del(&sq->list);
704 free(sq);
705 }
706}
707
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100708static int perf_session_deliver_event(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200709 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200710 struct perf_sample *sample,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200711 struct perf_tool *tool,
Thomas Gleixnerf74725d2010-12-07 12:48:53 +0000712 u64 file_offset);
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100713
David Ahernd25380cd2012-08-26 12:24:41 -0600714static int flush_sample_queue(struct perf_session *s,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200715 struct perf_tool *tool)
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200716{
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000717 struct ordered_samples *os = &s->ordered_samples;
718 struct list_head *head = &os->samples;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200719 struct sample_queue *tmp, *iter;
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200720 struct perf_sample sample;
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000721 u64 limit = os->next_flush;
722 u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL;
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200723 unsigned idx = 0, progress_next = os->nr_samples / 16;
Frederic Weisbecker5538bec2011-05-22 02:17:22 +0200724 int ret;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200725
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200726 if (!tool->ordered_samples || !limit)
David Ahernd25380cd2012-08-26 12:24:41 -0600727 return 0;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200728
729 list_for_each_entry_safe(iter, tmp, head, list) {
730 if (iter->timestamp > limit)
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000731 break;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200732
Arnaldo Carvalho de Melo0807d2d2012-09-26 12:48:18 -0300733 ret = perf_evlist__parse_sample(s->evlist, iter->event, &sample);
Frederic Weisbecker5538bec2011-05-22 02:17:22 +0200734 if (ret)
735 pr_err("Can't parse sample, err = %d\n", ret);
David Ahernd25380cd2012-08-26 12:24:41 -0600736 else {
737 ret = perf_session_deliver_event(s, iter->event, &sample, tool,
738 iter->file_offset);
739 if (ret)
740 return ret;
741 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200742
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000743 os->last_flush = iter->timestamp;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200744 list_del(&iter->list);
Thomas Gleixner020bb752010-11-30 17:49:53 +0000745 list_add(&iter->list, &os->sample_cache);
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200746 if (++idx >= progress_next) {
747 progress_next += os->nr_samples / 16;
748 ui_progress__update(idx, os->nr_samples,
749 "Processing time ordered events...");
750 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200751 }
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000752
753 if (list_empty(head)) {
754 os->last_sample = NULL;
755 } else if (last_ts <= limit) {
756 os->last_sample =
757 list_entry(head->prev, struct sample_queue, list);
758 }
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200759
760 os->nr_samples = 0;
David Ahernd25380cd2012-08-26 12:24:41 -0600761
762 return 0;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200763}
764
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200765/*
766 * When perf record finishes a pass on every buffers, it records this pseudo
767 * event.
768 * We record the max timestamp t found in the pass n.
769 * Assuming these timestamps are monotonic across cpus, we know that if
770 * a buffer still has events with timestamps below t, they will be all
771 * available and then read in the pass n + 1.
772 * Hence when we start to read the pass n + 2, we can safely flush every
773 * events with timestamps below t.
774 *
775 * ============ PASS n =================
776 * CPU 0 | CPU 1
777 * |
778 * cnt1 timestamps | cnt2 timestamps
779 * 1 | 2
780 * 2 | 3
781 * - | 4 <--- max recorded
782 *
783 * ============ PASS n + 1 ==============
784 * CPU 0 | CPU 1
785 * |
786 * cnt1 timestamps | cnt2 timestamps
787 * 3 | 5
788 * 4 | 6
789 * 5 | 7 <---- max recorded
790 *
791 * Flush every events below timestamp 4
792 *
793 * ============ PASS n + 2 ==============
794 * CPU 0 | CPU 1
795 * |
796 * cnt1 timestamps | cnt2 timestamps
797 * 6 | 8
798 * 7 | 9
799 * - | 10
800 *
801 * Flush every events below timestamp 7
802 * etc...
803 */
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200804static int process_finished_round(struct perf_tool *tool,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300805 union perf_event *event __maybe_unused,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200806 struct perf_session *session)
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200807{
David Ahernd25380cd2012-08-26 12:24:41 -0600808 int ret = flush_sample_queue(session, tool);
809 if (!ret)
810 session->ordered_samples.next_flush = session->ordered_samples.max_timestamp;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200811
David Ahernd25380cd2012-08-26 12:24:41 -0600812 return ret;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200813}
814
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200815/* The queue is ordered by time */
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100816static void __queue_event(struct sample_queue *new, struct perf_session *s)
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200817{
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000818 struct ordered_samples *os = &s->ordered_samples;
819 struct sample_queue *sample = os->last_sample;
820 u64 timestamp = new->timestamp;
821 struct list_head *p;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200822
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200823 ++os->nr_samples;
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000824 os->last_sample = new;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200825
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000826 if (!sample) {
827 list_add(&new->list, &os->samples);
828 os->max_timestamp = timestamp;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200829 return;
830 }
831
832 /*
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000833 * last_sample might point to some random place in the list as it's
834 * the last queued event. We expect that the new event is close to
835 * this.
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200836 */
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000837 if (sample->timestamp <= timestamp) {
838 while (sample->timestamp <= timestamp) {
839 p = sample->list.next;
840 if (p == &os->samples) {
841 list_add_tail(&new->list, &os->samples);
842 os->max_timestamp = timestamp;
843 return;
844 }
845 sample = list_entry(p, struct sample_queue, list);
846 }
847 list_add_tail(&new->list, &sample->list);
848 } else {
849 while (sample->timestamp > timestamp) {
850 p = sample->list.prev;
851 if (p == &os->samples) {
852 list_add(&new->list, &os->samples);
853 return;
854 }
855 sample = list_entry(p, struct sample_queue, list);
856 }
857 list_add(&new->list, &sample->list);
858 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200859}
860
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000861#define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue))
862
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200863static int perf_session_queue_event(struct perf_session *s, union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200864 struct perf_sample *sample, u64 file_offset)
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200865{
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000866 struct ordered_samples *os = &s->ordered_samples;
867 struct list_head *sc = &os->sample_cache;
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200868 u64 timestamp = sample->time;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200869 struct sample_queue *new;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200870
Thomas Gleixner79a14c12010-12-07 12:48:44 +0000871 if (!timestamp || timestamp == ~0ULL)
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100872 return -ETIME;
873
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200874 if (timestamp < s->ordered_samples.last_flush) {
875 printf("Warning: Timestamp below last timeslice flush\n");
876 return -EINVAL;
877 }
878
Thomas Gleixner020bb752010-11-30 17:49:53 +0000879 if (!list_empty(sc)) {
880 new = list_entry(sc->next, struct sample_queue, list);
881 list_del(&new->list);
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000882 } else if (os->sample_buffer) {
883 new = os->sample_buffer + os->sample_buffer_idx;
884 if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER)
885 os->sample_buffer = NULL;
Thomas Gleixner020bb752010-11-30 17:49:53 +0000886 } else {
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000887 os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new));
888 if (!os->sample_buffer)
Thomas Gleixner020bb752010-11-30 17:49:53 +0000889 return -ENOMEM;
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000890 list_add(&os->sample_buffer->list, &os->to_free);
891 os->sample_buffer_idx = 2;
892 new = os->sample_buffer + 1;
Thomas Gleixner020bb752010-11-30 17:49:53 +0000893 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200894
895 new->timestamp = timestamp;
Thomas Gleixnere4c2df12010-12-07 12:48:50 +0000896 new->file_offset = file_offset;
Thomas Gleixnerfe174202010-11-30 17:49:49 +0000897 new->event = event;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200898
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100899 __queue_event(new, s);
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200900
901 return 0;
902}
903
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200904static void callchain__printf(struct perf_sample *sample)
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -0200905{
906 unsigned int i;
907
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200908 printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr);
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -0200909
910 for (i = 0; i < sample->callchain->nr; i++)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200911 printf("..... %2d: %016" PRIx64 "\n",
912 i, sample->callchain->ips[i]);
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -0200913}
914
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +0100915static void branch_stack__printf(struct perf_sample *sample)
916{
917 uint64_t i;
918
919 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
920
921 for (i = 0; i < sample->branch_stack->nr; i++)
922 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n",
923 i, sample->branch_stack->entries[i].from,
924 sample->branch_stack->entries[i].to);
925}
926
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200927static void regs_dump__printf(u64 mask, u64 *regs)
928{
929 unsigned rid, i = 0;
930
931 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
932 u64 val = regs[i++];
933
934 printf(".... %-5s 0x%" PRIx64 "\n",
935 perf_reg_name(rid), val);
936 }
937}
938
939static void regs_user__printf(struct perf_sample *sample, u64 mask)
940{
941 struct regs_dump *user_regs = &sample->user_regs;
942
943 if (user_regs->regs) {
944 printf("... user regs: mask 0x%" PRIx64 "\n", mask);
945 regs_dump__printf(mask, user_regs->regs);
946 }
947}
948
949static void stack_user__printf(struct stack_dump *dump)
950{
951 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
952 dump->size, dump->offset);
953}
954
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200955static void perf_session__print_tstamp(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200956 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200957 struct perf_sample *sample)
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200958{
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300959 u64 sample_type = perf_evlist__sample_type(session->evlist);
960
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200961 if (event->header.type != PERF_RECORD_SAMPLE &&
Arnaldo Carvalho de Melo5e562472012-08-01 19:25:26 -0300962 !perf_evlist__sample_id_all(session->evlist)) {
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200963 fputs("-1 -1 ", stdout);
964 return;
965 }
966
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300967 if ((sample_type & PERF_SAMPLE_CPU))
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200968 printf("%u ", sample->cpu);
969
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300970 if (sample_type & PERF_SAMPLE_TIME)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200971 printf("%" PRIu64 " ", sample->time);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200972}
973
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200974static void dump_event(struct perf_session *session, union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200975 u64 file_offset, struct perf_sample *sample)
Thomas Gleixner9aefcab02010-12-07 12:48:47 +0000976{
977 if (!dump_trace)
978 return;
979
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200980 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
981 file_offset, event->header.size, event->header.type);
Thomas Gleixner9aefcab02010-12-07 12:48:47 +0000982
983 trace_event(event);
984
985 if (sample)
986 perf_session__print_tstamp(session, event, sample);
987
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200988 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200989 event->header.size, perf_event__name(event->header.type));
Thomas Gleixner9aefcab02010-12-07 12:48:47 +0000990}
991
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200992static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200993 struct perf_sample *sample)
Thomas Gleixner9aefcab02010-12-07 12:48:47 +0000994{
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300995 u64 sample_type;
996
Arnaldo Carvalho de Meloddbc24b2010-12-09 12:20:20 -0200997 if (!dump_trace)
998 return;
999
David Ahern7cec0922011-05-30 13:08:23 -06001000 printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -02001001 event->header.misc, sample->pid, sample->tid, sample->ip,
David Ahern7cec0922011-05-30 13:08:23 -06001002 sample->period, sample->addr);
Thomas Gleixner9aefcab02010-12-07 12:48:47 +00001003
Jiri Olsa0f6a3012012-08-07 15:20:45 +02001004 sample_type = evsel->attr.sample_type;
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -03001005
1006 if (sample_type & PERF_SAMPLE_CALLCHAIN)
Arnaldo Carvalho de Meloddbc24b2010-12-09 12:20:20 -02001007 callchain__printf(sample);
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +01001008
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -03001009 if (sample_type & PERF_SAMPLE_BRANCH_STACK)
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +01001010 branch_stack__printf(sample);
Jiri Olsa0f6a3012012-08-07 15:20:45 +02001011
1012 if (sample_type & PERF_SAMPLE_REGS_USER)
1013 regs_user__printf(sample, evsel->attr.sample_regs_user);
1014
1015 if (sample_type & PERF_SAMPLE_STACK_USER)
1016 stack_user__printf(&sample->user_stack);
Thomas Gleixner9aefcab02010-12-07 12:48:47 +00001017}
1018
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001019static struct machine *
1020 perf_session__find_machine_for_cpumode(struct perf_session *session,
1021 union perf_event *event)
1022{
1023 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1024
David Ahern7c0f4a42012-07-20 17:25:48 -06001025 if (perf_guest &&
1026 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1027 (cpumode == PERF_RECORD_MISC_GUEST_USER))) {
Nikunj A. Dadhania7fb0a5e2012-04-09 13:52:23 +05301028 u32 pid;
1029
1030 if (event->header.type == PERF_RECORD_MMAP)
1031 pid = event->mmap.pid;
1032 else
1033 pid = event->ip.pid;
1034
David Ahern207b5792012-07-01 16:11:37 -06001035 return perf_session__findnew_machine(session, pid);
Nikunj A. Dadhania7fb0a5e2012-04-09 13:52:23 +05301036 }
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001037
1038 return perf_session__find_host_machine(session);
1039}
1040
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001041static int perf_session_deliver_event(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001042 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -02001043 struct perf_sample *sample,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001044 struct perf_tool *tool,
Thomas Gleixner532e7262010-12-07 12:48:55 +00001045 u64 file_offset)
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001046{
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001047 struct perf_evsel *evsel;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001048 struct machine *machine;
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001049
Thomas Gleixner532e7262010-12-07 12:48:55 +00001050 dump_event(session, event, file_offset, sample);
1051
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -02001052 evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1053 if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) {
1054 /*
1055 * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here
1056 * because the tools right now may apply filters, discarding
1057 * some of the samples. For consistency, in the future we
1058 * should have something like nr_filtered_samples and remove
1059 * the sample->period from total_sample_period, etc, KISS for
1060 * now tho.
1061 *
1062 * Also testing against NULL allows us to handle files without
1063 * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the
1064 * future probably it'll be a good idea to restrict event
1065 * processing via perf_session to files with both set.
1066 */
1067 hists__inc_nr_events(&evsel->hists, event->header.type);
1068 }
1069
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001070 machine = perf_session__find_machine_for_cpumode(session, event);
1071
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001072 switch (event->header.type) {
1073 case PERF_RECORD_SAMPLE:
Jiri Olsa0f6a3012012-08-07 15:20:45 +02001074 dump_sample(evsel, event, sample);
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001075 if (evsel == NULL) {
1076 ++session->hists.stats.nr_unknown_id;
Jiri Olsa67822062012-04-12 14:21:01 +02001077 return 0;
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001078 }
Joerg Roedel0c095712012-02-10 18:05:04 +01001079 if (machine == NULL) {
1080 ++session->hists.stats.nr_unprocessable_samples;
Jiri Olsa67822062012-04-12 14:21:01 +02001081 return 0;
Joerg Roedel0c095712012-02-10 18:05:04 +01001082 }
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001083 return tool->sample(tool, event, sample, evsel, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001084 case PERF_RECORD_MMAP:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001085 return tool->mmap(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001086 case PERF_RECORD_COMM:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001087 return tool->comm(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001088 case PERF_RECORD_FORK:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001089 return tool->fork(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001090 case PERF_RECORD_EXIT:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001091 return tool->exit(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001092 case PERF_RECORD_LOST:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001093 if (tool->lost == perf_event__process_lost)
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001094 session->hists.stats.total_lost += event->lost.lost;
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001095 return tool->lost(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001096 case PERF_RECORD_READ:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001097 return tool->read(tool, event, sample, evsel, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001098 case PERF_RECORD_THROTTLE:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001099 return tool->throttle(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001100 case PERF_RECORD_UNTHROTTLE:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001101 return tool->unthrottle(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001102 default:
1103 ++session->hists.stats.nr_unknown_events;
1104 return -1;
1105 }
1106}
1107
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001108static int perf_session__preprocess_sample(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001109 union perf_event *event, struct perf_sample *sample)
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001110{
1111 if (event->header.type != PERF_RECORD_SAMPLE ||
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -03001112 !(perf_evlist__sample_type(session->evlist) & PERF_SAMPLE_CALLCHAIN))
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001113 return 0;
1114
1115 if (!ip_callchain__valid(sample->callchain, event)) {
1116 pr_debug("call-chain problem with event, skipping it.\n");
1117 ++session->hists.stats.nr_invalid_chains;
1118 session->hists.stats.total_invalid_chains += sample->period;
1119 return -EINVAL;
1120 }
1121 return 0;
1122}
1123
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001124static int perf_session__process_user_event(struct perf_session *session, union perf_event *event,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001125 struct perf_tool *tool, u64 file_offset)
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001126{
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -02001127 int err;
1128
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001129 dump_event(session, event, file_offset, NULL);
1130
1131 /* These events are processed right away */
1132 switch (event->header.type) {
1133 case PERF_RECORD_HEADER_ATTR:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001134 err = tool->attr(event, &session->evlist);
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -02001135 if (err == 0)
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -03001136 perf_session__set_id_hdr_size(session);
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -02001137 return err;
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001138 case PERF_RECORD_HEADER_EVENT_TYPE:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001139 return tool->event_type(tool, event);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001140 case PERF_RECORD_HEADER_TRACING_DATA:
1141 /* setup for reading amidst mmap */
1142 lseek(session->fd, file_offset, SEEK_SET);
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001143 return tool->tracing_data(event, session);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001144 case PERF_RECORD_HEADER_BUILD_ID:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001145 return tool->build_id(tool, event, session);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001146 case PERF_RECORD_FINISHED_ROUND:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001147 return tool->finished_round(tool, event, session);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001148 default:
1149 return -EINVAL;
1150 }
1151}
1152
Jiri Olsa268fb202012-05-30 14:23:43 +02001153static void event_swap(union perf_event *event, bool sample_id_all)
1154{
1155 perf_event__swap_op swap;
1156
1157 swap = perf_event__swap_ops[event->header.type];
1158 if (swap)
1159 swap(event, sample_id_all);
1160}
1161
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001162static int perf_session__process_event(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001163 union perf_event *event,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001164 struct perf_tool *tool,
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001165 u64 file_offset)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001166{
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -02001167 struct perf_sample sample;
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001168 int ret;
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001169
Jiri Olsa268fb202012-05-30 14:23:43 +02001170 if (session->header.needs_swap)
Arnaldo Carvalho de Melo5e562472012-08-01 19:25:26 -03001171 event_swap(event, perf_evlist__sample_id_all(session->evlist));
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001172
Thomas Gleixner9aefcab02010-12-07 12:48:47 +00001173 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1174 return -EINVAL;
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001175
Thomas Gleixner9aefcab02010-12-07 12:48:47 +00001176 hists__inc_nr_events(&session->hists, event->header.type);
1177
1178 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001179 return perf_session__process_user_event(session, event, tool, file_offset);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001180
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001181 /*
1182 * For all kernel events we get the sample data
1183 */
Arnaldo Carvalho de Melo0807d2d2012-09-26 12:48:18 -03001184 ret = perf_evlist__parse_sample(session->evlist, event, &sample);
Frederic Weisbecker5538bec2011-05-22 02:17:22 +02001185 if (ret)
1186 return ret;
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001187
1188 /* Preprocess sample records - precheck callchains */
1189 if (perf_session__preprocess_sample(session, event, &sample))
1190 return 0;
1191
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001192 if (tool->ordered_samples) {
Thomas Gleixnere4c2df12010-12-07 12:48:50 +00001193 ret = perf_session_queue_event(session, event, &sample,
1194 file_offset);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001195 if (ret != -ETIME)
1196 return ret;
1197 }
1198
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001199 return perf_session_deliver_event(session, event, &sample, tool,
Thomas Gleixnerf74725d2010-12-07 12:48:53 +00001200 file_offset);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001201}
1202
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02001203void perf_event_header__bswap(struct perf_event_header *self)
1204{
1205 self->type = bswap_32(self->type);
1206 self->misc = bswap_16(self->misc);
1207 self->size = bswap_16(self->size);
1208}
1209
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -02001210struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1211{
1212 return machine__findnew_thread(&session->host_machine, pid);
1213}
1214
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001215static struct thread *perf_session__register_idle_thread(struct perf_session *self)
1216{
1217 struct thread *thread = perf_session__findnew(self, 0);
1218
1219 if (thread == NULL || thread__set_comm(thread, "swapper")) {
1220 pr_err("problem inserting idle task.\n");
1221 thread = NULL;
1222 }
1223
1224 return thread;
1225}
1226
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001227static void perf_session__warn_about_errors(const struct perf_session *session,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001228 const struct perf_tool *tool)
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001229{
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001230 if (tool->lost == perf_event__process_lost &&
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -02001231 session->hists.stats.nr_events[PERF_RECORD_LOST] != 0) {
1232 ui__warning("Processed %d events and lost %d chunks!\n\n"
1233 "Check IO/CPU overload!\n\n",
1234 session->hists.stats.nr_events[0],
1235 session->hists.stats.nr_events[PERF_RECORD_LOST]);
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001236 }
1237
1238 if (session->hists.stats.nr_unknown_events != 0) {
1239 ui__warning("Found %u unknown events!\n\n"
1240 "Is this an older tool processing a perf.data "
1241 "file generated by a more recent tool?\n\n"
1242 "If that is not the case, consider "
1243 "reporting to linux-kernel@vger.kernel.org.\n\n",
1244 session->hists.stats.nr_unknown_events);
1245 }
1246
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001247 if (session->hists.stats.nr_unknown_id != 0) {
1248 ui__warning("%u samples with id not present in the header\n",
1249 session->hists.stats.nr_unknown_id);
1250 }
1251
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001252 if (session->hists.stats.nr_invalid_chains != 0) {
1253 ui__warning("Found invalid callchains!\n\n"
1254 "%u out of %u events were discarded for this reason.\n\n"
1255 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
1256 session->hists.stats.nr_invalid_chains,
1257 session->hists.stats.nr_events[PERF_RECORD_SAMPLE]);
1258 }
Joerg Roedel0c095712012-02-10 18:05:04 +01001259
1260 if (session->hists.stats.nr_unprocessable_samples != 0) {
1261 ui__warning("%u unprocessable samples recorded.\n"
1262 "Do you have a KVM guest running and not using 'perf kvm'?\n",
1263 session->hists.stats.nr_unprocessable_samples);
1264 }
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001265}
1266
Tom Zanussi8dc58102010-04-01 23:59:15 -05001267#define session_done() (*(volatile int *)(&session_done))
1268volatile int session_done;
1269
1270static int __perf_session__process_pipe_events(struct perf_session *self,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001271 struct perf_tool *tool)
Tom Zanussi8dc58102010-04-01 23:59:15 -05001272{
Stephane Eranian444d2862012-05-15 13:28:12 +02001273 union perf_event *event;
1274 uint32_t size, cur_size = 0;
1275 void *buf = NULL;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001276 int skip = 0;
1277 u64 head;
1278 int err;
1279 void *p;
1280
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001281 perf_tool__fill_defaults(tool);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001282
1283 head = 0;
Stephane Eranian444d2862012-05-15 13:28:12 +02001284 cur_size = sizeof(union perf_event);
1285
1286 buf = malloc(cur_size);
1287 if (!buf)
1288 return -errno;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001289more:
Stephane Eranian444d2862012-05-15 13:28:12 +02001290 event = buf;
1291 err = readn(self->fd, event, sizeof(struct perf_event_header));
Tom Zanussi8dc58102010-04-01 23:59:15 -05001292 if (err <= 0) {
1293 if (err == 0)
1294 goto done;
1295
1296 pr_err("failed to read event header\n");
1297 goto out_err;
1298 }
1299
1300 if (self->header.needs_swap)
Stephane Eranian444d2862012-05-15 13:28:12 +02001301 perf_event_header__bswap(&event->header);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001302
Stephane Eranian444d2862012-05-15 13:28:12 +02001303 size = event->header.size;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001304 if (size == 0)
1305 size = 8;
1306
Stephane Eranian444d2862012-05-15 13:28:12 +02001307 if (size > cur_size) {
1308 void *new = realloc(buf, size);
1309 if (!new) {
1310 pr_err("failed to allocate memory to read event\n");
1311 goto out_err;
1312 }
1313 buf = new;
1314 cur_size = size;
1315 event = buf;
1316 }
1317 p = event;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001318 p += sizeof(struct perf_event_header);
1319
Tom Zanussi794e43b2010-05-05 00:27:40 -05001320 if (size - sizeof(struct perf_event_header)) {
Arnaldo Carvalho de Melo1e7972c2011-01-03 16:50:55 -02001321 err = readn(self->fd, p, size - sizeof(struct perf_event_header));
Tom Zanussi794e43b2010-05-05 00:27:40 -05001322 if (err <= 0) {
1323 if (err == 0) {
1324 pr_err("unexpected end of event stream\n");
1325 goto done;
1326 }
Tom Zanussi8dc58102010-04-01 23:59:15 -05001327
Tom Zanussi794e43b2010-05-05 00:27:40 -05001328 pr_err("failed to read event data\n");
1329 goto out_err;
1330 }
Tom Zanussi8dc58102010-04-01 23:59:15 -05001331 }
1332
Stephane Eranian444d2862012-05-15 13:28:12 +02001333 if ((skip = perf_session__process_event(self, event, tool, head)) < 0) {
Jiri Olsa9389a462012-04-16 20:42:51 +02001334 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
Stephane Eranian444d2862012-05-15 13:28:12 +02001335 head, event->header.size, event->header.type);
Jiri Olsa9389a462012-04-16 20:42:51 +02001336 err = -EINVAL;
1337 goto out_err;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001338 }
1339
1340 head += size;
1341
Tom Zanussi8dc58102010-04-01 23:59:15 -05001342 if (skip > 0)
1343 head += skip;
1344
1345 if (!session_done())
1346 goto more;
1347done:
1348 err = 0;
1349out_err:
Stephane Eranian444d2862012-05-15 13:28:12 +02001350 free(buf);
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001351 perf_session__warn_about_errors(self, tool);
Thomas Gleixner020bb752010-11-30 17:49:53 +00001352 perf_session_free_sample_buffers(self);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001353 return err;
1354}
1355
Frederic Weisbecker998bedc2011-05-23 13:06:28 +02001356static union perf_event *
1357fetch_mmaped_event(struct perf_session *session,
1358 u64 head, size_t mmap_size, char *buf)
1359{
1360 union perf_event *event;
1361
1362 /*
1363 * Ensure we have enough space remaining to read
1364 * the size of the event in the headers.
1365 */
1366 if (head + sizeof(event->header) > mmap_size)
1367 return NULL;
1368
1369 event = (union perf_event *)(buf + head);
1370
1371 if (session->header.needs_swap)
1372 perf_event_header__bswap(&event->header);
1373
1374 if (head + event->header.size > mmap_size)
1375 return NULL;
1376
1377 return event;
1378}
1379
David Miller35d48dd2012-11-10 14:12:19 -05001380/*
1381 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1382 * slices. On 32bit we use 32MB.
1383 */
1384#if BITS_PER_LONG == 64
1385#define MMAP_SIZE ULLONG_MAX
1386#define NUM_MMAPS 1
1387#else
1388#define MMAP_SIZE (32 * 1024 * 1024ULL)
1389#define NUM_MMAPS 128
1390#endif
1391
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001392int __perf_session__process_events(struct perf_session *session,
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001393 u64 data_offset, u64 data_size,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001394 u64 file_size, struct perf_tool *tool)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001395{
Thomas Gleixner55b446292010-11-30 17:49:46 +00001396 u64 head, page_offset, file_offset, file_pos, progress_next;
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001397 int err, mmap_prot, mmap_flags, map_idx = 0;
Arnaldo Carvalho de Melo0c1fe6b2012-10-06 14:57:10 -03001398 size_t mmap_size;
David Miller35d48dd2012-11-10 14:12:19 -05001399 char *buf, *mmaps[NUM_MMAPS];
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001400 union perf_event *event;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001401 uint32_t size;
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001402
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001403 perf_tool__fill_defaults(tool);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001404
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001405 page_offset = page_size * (data_offset / page_size);
1406 file_offset = page_offset;
1407 head = data_offset - page_offset;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001408
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001409 if (data_offset + data_size < file_size)
1410 file_size = data_offset + data_size;
1411
Thomas Gleixner55b446292010-11-30 17:49:46 +00001412 progress_next = file_size / 16;
Thomas Gleixner55b446292010-11-30 17:49:46 +00001413
David Miller35d48dd2012-11-10 14:12:19 -05001414 mmap_size = MMAP_SIZE;
Thomas Gleixner55b446292010-11-30 17:49:46 +00001415 if (mmap_size > file_size)
1416 mmap_size = file_size;
1417
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001418 memset(mmaps, 0, sizeof(mmaps));
1419
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02001420 mmap_prot = PROT_READ;
1421 mmap_flags = MAP_SHARED;
1422
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001423 if (session->header.needs_swap) {
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02001424 mmap_prot |= PROT_WRITE;
1425 mmap_flags = MAP_PRIVATE;
1426 }
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001427remap:
Thomas Gleixner55b446292010-11-30 17:49:46 +00001428 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd,
1429 file_offset);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001430 if (buf == MAP_FAILED) {
1431 pr_err("failed to mmap file\n");
1432 err = -errno;
1433 goto out_err;
1434 }
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001435 mmaps[map_idx] = buf;
1436 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001437 file_pos = file_offset + head;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001438
1439more:
Frederic Weisbecker998bedc2011-05-23 13:06:28 +02001440 event = fetch_mmaped_event(session, head, mmap_size, buf);
1441 if (!event) {
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001442 if (mmaps[map_idx]) {
1443 munmap(mmaps[map_idx], mmap_size);
1444 mmaps[map_idx] = NULL;
1445 }
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001446
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001447 page_offset = page_size * (head / page_size);
1448 file_offset += page_offset;
1449 head -= page_offset;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001450 goto remap;
1451 }
1452
1453 size = event->header.size;
1454
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001455 if (size == 0 ||
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001456 perf_session__process_event(session, event, tool, file_pos) < 0) {
Jiri Olsa9389a462012-04-16 20:42:51 +02001457 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1458 file_offset + head, event->header.size,
1459 event->header.type);
1460 err = -EINVAL;
1461 goto out_err;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001462 }
1463
1464 head += size;
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001465 file_pos += size;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001466
Thomas Gleixner55b446292010-11-30 17:49:46 +00001467 if (file_pos >= progress_next) {
1468 progress_next += file_size / 16;
Arnaldo Carvalho de Meloca59bcb2011-10-25 13:29:11 -02001469 ui_progress__update(file_pos, file_size,
1470 "Processing events...");
Thomas Gleixner55b446292010-11-30 17:49:46 +00001471 }
1472
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001473 if (file_pos < file_size)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001474 goto more;
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001475
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001476 err = 0;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +02001477 /* do the final flush for ordered samples */
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001478 session->ordered_samples.next_flush = ULLONG_MAX;
David Ahernd25380cd2012-08-26 12:24:41 -06001479 err = flush_sample_queue(session, tool);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001480out_err:
Namhyung Kima5580f32012-11-13 22:30:34 +09001481 ui_progress__finish();
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001482 perf_session__warn_about_errors(session, tool);
Thomas Gleixner020bb752010-11-30 17:49:53 +00001483 perf_session_free_sample_buffers(session);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001484 return err;
1485}
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001486
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001487int perf_session__process_events(struct perf_session *self,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001488 struct perf_tool *tool)
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001489{
1490 int err;
1491
1492 if (perf_session__register_idle_thread(self) == NULL)
1493 return -ENOMEM;
1494
Tom Zanussi8dc58102010-04-01 23:59:15 -05001495 if (!self->fd_pipe)
1496 err = __perf_session__process_events(self,
1497 self->header.data_offset,
1498 self->header.data_size,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001499 self->size, tool);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001500 else
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001501 err = __perf_session__process_pipe_events(self, tool);
Dave Martin88ca8952010-07-27 11:46:12 -03001502
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001503 return err;
1504}
1505
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -03001506bool perf_session__has_traces(struct perf_session *session, const char *msg)
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001507{
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -03001508 if (!(perf_evlist__sample_type(session->evlist) & PERF_SAMPLE_RAW)) {
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -02001509 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1510 return false;
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001511 }
1512
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -02001513 return true;
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001514}
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001515
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001516int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
1517 const char *symbol_name, u64 addr)
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001518{
1519 char *bracket;
Arnaldo Carvalho de Melo9de89fe2010-02-03 16:52:00 -02001520 enum map_type i;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001521 struct ref_reloc_sym *ref;
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001522
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001523 ref = zalloc(sizeof(struct ref_reloc_sym));
1524 if (ref == NULL)
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001525 return -ENOMEM;
1526
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001527 ref->name = strdup(symbol_name);
1528 if (ref->name == NULL) {
1529 free(ref);
1530 return -ENOMEM;
1531 }
1532
1533 bracket = strchr(ref->name, ']');
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001534 if (bracket)
1535 *bracket = '\0';
1536
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001537 ref->addr = addr;
Arnaldo Carvalho de Melo9de89fe2010-02-03 16:52:00 -02001538
1539 for (i = 0; i < MAP__NR_TYPES; ++i) {
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001540 struct kmap *kmap = map__kmap(maps[i]);
1541 kmap->ref_reloc_sym = ref;
Arnaldo Carvalho de Melo9de89fe2010-02-03 16:52:00 -02001542 }
1543
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001544 return 0;
1545}
Arnaldo Carvalho de Melo1f626bc2010-05-09 19:57:08 -03001546
1547size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp)
1548{
1549 return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) +
1550 __dsos__fprintf(&self->host_machine.user_dsos, fp) +
1551 machines__fprintf_dsos(&self->machines, fp);
1552}
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -03001553
1554size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp,
Arnaldo Carvalho de Melo417c2ff2012-12-07 09:53:58 -03001555 bool (skip)(struct dso *dso, int parm), int parm)
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -03001556{
Arnaldo Carvalho de Melo417c2ff2012-12-07 09:53:58 -03001557 size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, skip, parm);
1558 return ret + machines__fprintf_dsos_buildid(&self->machines, fp, skip, parm);
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -03001559}
Arnaldo Carvalho de Meloe248de32011-03-05 21:40:06 -03001560
1561size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
1562{
1563 struct perf_evsel *pos;
1564 size_t ret = fprintf(fp, "Aggregated stats:\n");
1565
1566 ret += hists__fprintf_nr_events(&session->hists, fp);
1567
1568 list_for_each_entry(pos, &session->evlist->entries, node) {
Arnaldo Carvalho de Melo7289f832012-06-12 12:34:58 -03001569 ret += fprintf(fp, "%s stats:\n", perf_evsel__name(pos));
Arnaldo Carvalho de Meloe248de32011-03-05 21:40:06 -03001570 ret += hists__fprintf_nr_events(&pos->hists, fp);
1571 }
1572
1573 return ret;
1574}
David Ahernc0230b22011-03-09 22:23:27 -07001575
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -02001576size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
1577{
1578 /*
1579 * FIXME: Here we have to actually print all the machines in this
1580 * session, not just the host...
1581 */
1582 return machine__fprintf(&session->host_machine, fp);
1583}
1584
1585void perf_session__remove_thread(struct perf_session *session,
1586 struct thread *th)
1587{
1588 /*
1589 * FIXME: This one makes no sense, we need to remove the thread from
1590 * the machine it belongs to, perf_session can have many machines, so
1591 * doing it always on ->host_machine is wrong. Fix when auditing all
1592 * the 'perf kvm' code.
1593 */
1594 machine__remove_thread(&session->host_machine, th);
1595}
1596
David Ahern9cbdb702011-04-06 21:54:20 -06001597struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
1598 unsigned int type)
1599{
1600 struct perf_evsel *pos;
1601
1602 list_for_each_entry(pos, &session->evlist->entries, node) {
1603 if (pos->attr.type == type)
1604 return pos;
1605 }
1606 return NULL;
1607}
1608
Jiri Olsa71ad0f52012-08-07 15:20:46 +02001609void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
1610 struct perf_sample *sample, struct machine *machine,
1611 int print_sym, int print_dso, int print_symoffset)
David Ahernc0230b22011-03-09 22:23:27 -07001612{
1613 struct addr_location al;
David Ahernc0230b22011-03-09 22:23:27 -07001614 struct callchain_cursor_node *node;
1615
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001616 if (perf_event__preprocess_sample(event, machine, &al, sample,
David Ahernc0230b22011-03-09 22:23:27 -07001617 NULL) < 0) {
1618 error("problem processing %d event, skipping it.\n",
1619 event->header.type);
1620 return;
1621 }
1622
1623 if (symbol_conf.use_callchain && sample->callchain) {
1624
Jiri Olsa71ad0f52012-08-07 15:20:46 +02001625
1626 if (machine__resolve_callchain(machine, evsel, al.thread,
1627 sample, NULL) != 0) {
David Ahernc0230b22011-03-09 22:23:27 -07001628 if (verbose)
1629 error("Failed to resolve callchain. Skipping\n");
1630 return;
1631 }
Namhyung Kim47260642012-05-31 14:43:26 +09001632 callchain_cursor_commit(&callchain_cursor);
David Ahernc0230b22011-03-09 22:23:27 -07001633
1634 while (1) {
Namhyung Kim47260642012-05-31 14:43:26 +09001635 node = callchain_cursor_current(&callchain_cursor);
David Ahernc0230b22011-03-09 22:23:27 -07001636 if (!node)
1637 break;
1638
David Ahern787bef12011-05-27 14:28:43 -06001639 printf("\t%16" PRIx64, node->ip);
1640 if (print_sym) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001641 printf(" ");
1642 symbol__fprintf_symname(node->sym, stdout);
David Ahern610723f2011-05-27 14:28:44 -06001643 }
1644 if (print_dso) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001645 printf(" (");
David Ahern52deff72012-05-29 22:58:26 -06001646 map__fprintf_dsoname(node->map, stdout);
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001647 printf(")");
David Ahern787bef12011-05-27 14:28:43 -06001648 }
1649 printf("\n");
David Ahernc0230b22011-03-09 22:23:27 -07001650
Namhyung Kim47260642012-05-31 14:43:26 +09001651 callchain_cursor_advance(&callchain_cursor);
David Ahernc0230b22011-03-09 22:23:27 -07001652 }
1653
1654 } else {
David Ahernadc4bf92011-05-30 09:16:27 -06001655 printf("%16" PRIx64, sample->ip);
David Ahern787bef12011-05-27 14:28:43 -06001656 if (print_sym) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001657 printf(" ");
Akihiro Nagaia978f2a2012-01-30 13:43:15 +09001658 if (print_symoffset)
1659 symbol__fprintf_symname_offs(al.sym, &al,
1660 stdout);
1661 else
1662 symbol__fprintf_symname(al.sym, stdout);
David Ahern610723f2011-05-27 14:28:44 -06001663 }
1664
1665 if (print_dso) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001666 printf(" (");
1667 map__fprintf_dsoname(al.map, stdout);
1668 printf(")");
David Ahern787bef12011-05-27 14:28:43 -06001669 }
David Ahernc0230b22011-03-09 22:23:27 -07001670 }
1671}
Anton Blanchard5d67be92011-07-04 21:57:50 +10001672
1673int perf_session__cpu_bitmap(struct perf_session *session,
1674 const char *cpu_list, unsigned long *cpu_bitmap)
1675{
1676 int i;
1677 struct cpu_map *map;
1678
1679 for (i = 0; i < PERF_TYPE_MAX; ++i) {
1680 struct perf_evsel *evsel;
1681
1682 evsel = perf_session__find_first_evtype(session, i);
1683 if (!evsel)
1684 continue;
1685
1686 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
1687 pr_err("File does not contain CPU events. "
1688 "Remove -c option to proceed.\n");
1689 return -1;
1690 }
1691 }
1692
1693 map = cpu_map__new(cpu_list);
David Ahern47fbe532011-11-13 10:45:27 -07001694 if (map == NULL) {
1695 pr_err("Invalid cpu_list\n");
1696 return -1;
1697 }
Anton Blanchard5d67be92011-07-04 21:57:50 +10001698
1699 for (i = 0; i < map->nr; i++) {
1700 int cpu = map->map[i];
1701
1702 if (cpu >= MAX_NR_CPUS) {
1703 pr_err("Requested CPU %d too large. "
1704 "Consider raising MAX_NR_CPUS\n", cpu);
1705 return -1;
1706 }
1707
1708 set_bit(cpu, cpu_bitmap);
1709 }
1710
1711 return 0;
1712}
Stephane Eranianfbe96f22011-09-30 15:40:40 +02001713
1714void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
1715 bool full)
1716{
1717 struct stat st;
1718 int ret;
1719
1720 if (session == NULL || fp == NULL)
1721 return;
1722
1723 ret = fstat(session->fd, &st);
1724 if (ret == -1)
1725 return;
1726
1727 fprintf(fp, "# ========\n");
1728 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
1729 perf_header__fprintf_info(session, fp, full);
1730 fprintf(fp, "# ========\n#\n");
1731}
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001732
1733
1734int __perf_session__set_tracepoints_handlers(struct perf_session *session,
1735 const struct perf_evsel_str_handler *assocs,
1736 size_t nr_assocs)
1737{
1738 struct perf_evlist *evlist = session->evlist;
1739 struct event_format *format;
1740 struct perf_evsel *evsel;
1741 char *tracepoint, *name;
1742 size_t i;
1743 int err;
1744
1745 for (i = 0; i < nr_assocs; i++) {
1746 err = -ENOMEM;
1747 tracepoint = strdup(assocs[i].name);
1748 if (tracepoint == NULL)
1749 goto out;
1750
1751 err = -ENOENT;
1752 name = strchr(tracepoint, ':');
1753 if (name == NULL)
1754 goto out_free;
1755
1756 *name++ = '\0';
1757 format = pevent_find_event_by_name(session->pevent,
1758 tracepoint, name);
1759 if (format == NULL) {
1760 /*
1761 * Adding a handler for an event not in the session,
1762 * just ignore it.
1763 */
1764 goto next;
1765 }
1766
1767 evsel = perf_evlist__find_tracepoint_by_id(evlist, format->id);
1768 if (evsel == NULL)
1769 goto next;
1770
1771 err = -EEXIST;
1772 if (evsel->handler.func != NULL)
1773 goto out_free;
1774 evsel->handler.func = assocs[i].handler;
1775next:
1776 free(tracepoint);
1777 }
1778
1779 err = 0;
1780out:
1781 return err;
1782
1783out_free:
1784 free(tracepoint);
1785 goto out;
1786}