blob: 15abe40dc7021bd8229563a092ce63e67e4d2ccd [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);
Thomas Gleixner55b446292010-11-30 17:49:46 +0000131 /*
132 * On 64bit we can mmap the data file in one go. No need for tiny mmap
133 * slices. On 32bit we use 32MB.
134 */
135#if BITS_PER_LONG == 64
136 self->mmap_window = ULLONG_MAX;
137#else
138 self->mmap_window = 32 * 1024 * 1024ULL;
139#endif
Arnaldo Carvalho de Melo23346f22010-04-27 21:17:50 -0300140 self->machines = RB_ROOT;
Tom Zanussi454c4072010-05-01 01:41:20 -0500141 self->repipe = repipe;
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000142 INIT_LIST_HEAD(&self->ordered_samples.samples);
Thomas Gleixner020bb752010-11-30 17:49:53 +0000143 INIT_LIST_HEAD(&self->ordered_samples.sample_cache);
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000144 INIT_LIST_HEAD(&self->ordered_samples.to_free);
Arnaldo Carvalho de Melo1f626bc2010-05-09 19:57:08 -0300145 machine__init(&self->host_machine, "", HOST_KERNEL_ID);
Jiri Olsa4bf9ce12012-03-22 14:37:26 +0100146 hists__init(&self->hists);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200147
Arnaldo Carvalho de Melo64abebf72010-01-27 21:05:52 -0200148 if (mode == O_RDONLY) {
149 if (perf_session__open(self, force) < 0)
150 goto out_delete;
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -0300151 perf_session__set_id_hdr_size(self);
Arnaldo Carvalho de Melo64abebf72010-01-27 21:05:52 -0200152 } else if (mode == O_WRONLY) {
153 /*
154 * In O_RDONLY mode this will be performed when reading the
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200155 * kernel MMAP event, in perf_event__process_mmap().
Arnaldo Carvalho de Melo64abebf72010-01-27 21:05:52 -0200156 */
157 if (perf_session__create_kernel_maps(self) < 0)
158 goto out_delete;
159 }
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -0200160
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200161 if (tool && tool->ordering_requires_timestamps &&
Arnaldo Carvalho de Melo5e562472012-08-01 19:25:26 -0300162 tool->ordered_samples && !perf_evlist__sample_id_all(self->evlist)) {
Ian Munsie21ef97f2010-12-10 14:09:16 +1100163 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200164 tool->ordered_samples = false;
Ian Munsie21ef97f2010-12-10 14:09:16 +1100165 }
166
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200167out:
168 return self;
Arnaldo Carvalho de Melo4aa65632009-12-13 19:50:29 -0200169out_delete:
170 perf_session__delete(self);
171 return NULL;
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200172}
173
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200174static void machine__delete_dead_threads(struct machine *machine)
Arnaldo Carvalho de Melod65a4582010-07-30 18:31:28 -0300175{
176 struct thread *n, *t;
177
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200178 list_for_each_entry_safe(t, n, &machine->dead_threads, node) {
Arnaldo Carvalho de Melod65a4582010-07-30 18:31:28 -0300179 list_del(&t->node);
180 thread__delete(t);
181 }
182}
183
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200184static void perf_session__delete_dead_threads(struct perf_session *session)
185{
186 machine__delete_dead_threads(&session->host_machine);
187}
188
189static void machine__delete_threads(struct machine *self)
Arnaldo Carvalho de Melod65a4582010-07-30 18:31:28 -0300190{
191 struct rb_node *nd = rb_first(&self->threads);
192
193 while (nd) {
194 struct thread *t = rb_entry(nd, struct thread, rb_node);
195
196 rb_erase(&t->rb_node, &self->threads);
197 nd = rb_next(nd);
198 thread__delete(t);
199 }
200}
201
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200202static void perf_session__delete_threads(struct perf_session *session)
203{
204 machine__delete_threads(&session->host_machine);
205}
206
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200207void perf_session__delete(struct perf_session *self)
208{
Arnaldo Carvalho de Melo076c6e452010-08-02 18:18:28 -0300209 perf_session__destroy_kernel_maps(self);
Arnaldo Carvalho de Melod65a4582010-07-30 18:31:28 -0300210 perf_session__delete_dead_threads(self);
211 perf_session__delete_threads(self);
212 machine__exit(&self->host_machine);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200213 close(self->fd);
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200214 free(self);
Jiri Olsa7dbf4dc2012-09-10 18:50:19 +0200215 vdso__exit();
Arnaldo Carvalho de Melo94c744b2009-12-11 21:24:02 -0200216}
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200217
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -0200218void machine__remove_thread(struct machine *self, struct thread *th)
Arnaldo Carvalho de Melo720a3ae2010-06-17 08:37:44 -0300219{
Arnaldo Carvalho de Melo70597f22010-08-02 18:59:28 -0300220 self->last_match = NULL;
Arnaldo Carvalho de Melo720a3ae2010-06-17 08:37:44 -0300221 rb_erase(&th->rb_node, &self->threads);
222 /*
223 * We may have references to this thread, for instance in some hist_entry
224 * instances, so just move them to a separate list.
225 */
226 list_add_tail(&th->node, &self->dead_threads);
227}
228
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200229static bool symbol__match_parent_regex(struct symbol *sym)
230{
231 if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0))
232 return 1;
233
234 return 0;
235}
236
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +0100237static const u8 cpumodes[] = {
238 PERF_RECORD_MISC_USER,
239 PERF_RECORD_MISC_KERNEL,
240 PERF_RECORD_MISC_GUEST_USER,
241 PERF_RECORD_MISC_GUEST_KERNEL
242};
243#define NCPUMODES (sizeof(cpumodes)/sizeof(u8))
244
245static void ip__resolve_ams(struct machine *self, struct thread *thread,
246 struct addr_map_symbol *ams,
247 u64 ip)
248{
249 struct addr_location al;
250 size_t i;
251 u8 m;
252
253 memset(&al, 0, sizeof(al));
254
255 for (i = 0; i < NCPUMODES; i++) {
256 m = cpumodes[i];
257 /*
258 * We cannot use the header.misc hint to determine whether a
259 * branch stack address is user, kernel, guest, hypervisor.
260 * Branches may straddle the kernel/user/hypervisor boundaries.
261 * Thus, we have to try consecutively until we find a match
262 * or else, the symbol is unknown
263 */
264 thread__find_addr_location(thread, self, m, MAP__FUNCTION,
265 ip, &al, NULL);
266 if (al.sym)
267 goto found;
268 }
269found:
270 ams->addr = ip;
Stephane Eraniana68c2c52012-03-08 23:47:48 +0100271 ams->al_addr = al.addr;
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +0100272 ams->sym = al.sym;
273 ams->map = al.map;
274}
275
276struct branch_info *machine__resolve_bstack(struct machine *self,
277 struct thread *thr,
278 struct branch_stack *bs)
279{
280 struct branch_info *bi;
281 unsigned int i;
282
283 bi = calloc(bs->nr, sizeof(struct branch_info));
284 if (!bi)
285 return NULL;
286
287 for (i = 0; i < bs->nr; i++) {
288 ip__resolve_ams(self, thr, &bi[i].to, bs->entries[i].to);
289 ip__resolve_ams(self, thr, &bi[i].from, bs->entries[i].from);
290 bi[i].flags = bs->entries[i].flags;
291 }
292 return bi;
293}
294
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200295static int machine__resolve_callchain_sample(struct machine *machine,
296 struct thread *thread,
297 struct ip_callchain *chain,
298 struct symbol **parent)
299
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200300{
301 u8 cpumode = PERF_RECORD_MISC_USER;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200302 unsigned int i;
Frederic Weisbecker1b3a0e92011-01-14 04:51:58 +0100303 int err;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200304
Namhyung Kim47260642012-05-31 14:43:26 +0900305 callchain_cursor_reset(&callchain_cursor);
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200306
Namhyung Kim114067b2012-05-31 14:43:27 +0900307 if (chain->nr > PERF_MAX_STACK_DEPTH) {
308 pr_warning("corrupted callchain. skipping...\n");
309 return 0;
310 }
311
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200312 for (i = 0; i < chain->nr; i++) {
Sam Liaod797fdc2011-06-07 23:49:46 +0800313 u64 ip;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200314 struct addr_location al;
315
Sam Liaod797fdc2011-06-07 23:49:46 +0800316 if (callchain_param.order == ORDER_CALLEE)
317 ip = chain->ips[i];
318 else
319 ip = chain->ips[chain->nr - i - 1];
320
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200321 if (ip >= PERF_CONTEXT_MAX) {
322 switch (ip) {
323 case PERF_CONTEXT_HV:
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200324 cpumode = PERF_RECORD_MISC_HYPERVISOR;
325 break;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200326 case PERF_CONTEXT_KERNEL:
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200327 cpumode = PERF_RECORD_MISC_KERNEL;
328 break;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200329 case PERF_CONTEXT_USER:
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200330 cpumode = PERF_RECORD_MISC_USER;
331 break;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200332 default:
Namhyung Kim114067b2012-05-31 14:43:27 +0900333 pr_debug("invalid callchain context: "
334 "%"PRId64"\n", (s64) ip);
335 /*
336 * It seems the callchain is corrupted.
337 * Discard all.
338 */
339 callchain_cursor_reset(&callchain_cursor);
340 return 0;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200341 }
342 continue;
343 }
344
Zhang, Yanmina1645ce2010-04-19 13:32:50 +0800345 al.filtered = false;
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200346 thread__find_addr_location(thread, machine, cpumode,
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200347 MAP__FUNCTION, ip, &al, NULL);
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200348 if (al.sym != NULL) {
349 if (sort__has_parent && !*parent &&
350 symbol__match_parent_regex(al.sym))
351 *parent = al.sym;
Arnaldo Carvalho de Melod599db32009-12-15 20:04:42 -0200352 if (!symbol_conf.use_callchain)
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200353 break;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200354 }
Frederic Weisbecker1b3a0e92011-01-14 04:51:58 +0100355
Namhyung Kim47260642012-05-31 14:43:26 +0900356 err = callchain_cursor_append(&callchain_cursor,
Frederic Weisbecker1b3a0e92011-01-14 04:51:58 +0100357 ip, al.map, al.sym);
358 if (err)
359 return err;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200360 }
361
Frederic Weisbecker1b3a0e92011-01-14 04:51:58 +0100362 return 0;
Arnaldo Carvalho de Meloa3286262009-12-14 14:22:59 -0200363}
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200364
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200365static int unwind_entry(struct unwind_entry *entry, void *arg)
366{
367 struct callchain_cursor *cursor = arg;
368 return callchain_cursor_append(cursor, entry->ip,
369 entry->map, entry->sym);
370}
371
372int machine__resolve_callchain(struct machine *machine,
373 struct perf_evsel *evsel,
374 struct thread *thread,
375 struct perf_sample *sample,
376 struct symbol **parent)
377
378{
379 int ret;
380
381 callchain_cursor_reset(&callchain_cursor);
382
383 ret = machine__resolve_callchain_sample(machine, thread,
384 sample->callchain, parent);
385 if (ret)
386 return ret;
387
388 /* Can we do dwarf post unwind? */
389 if (!((evsel->attr.sample_type & PERF_SAMPLE_REGS_USER) &&
390 (evsel->attr.sample_type & PERF_SAMPLE_STACK_USER)))
391 return 0;
392
Jiri Olsabdde3712012-09-10 18:50:16 +0200393 /* Bail out if nothing was captured. */
394 if ((!sample->user_regs.regs) ||
395 (!sample->user_stack.size))
396 return 0;
397
Jiri Olsa71ad0f52012-08-07 15:20:46 +0200398 return unwind__get_entries(unwind_entry, &callchain_cursor, machine,
399 thread, evsel->attr.sample_regs_user,
400 sample);
401
402}
403
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300404static int process_event_synth_tracing_data_stub(union perf_event *event
405 __maybe_unused,
406 struct perf_session *session
407 __maybe_unused)
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200408{
409 dump_printf(": unhandled!\n");
410 return 0;
411}
412
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300413static int process_event_synth_attr_stub(union perf_event *event __maybe_unused,
414 struct perf_evlist **pevlist
415 __maybe_unused)
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -0200416{
417 dump_printf(": unhandled!\n");
418 return 0;
419}
420
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300421static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
422 union perf_event *event __maybe_unused,
423 struct perf_sample *sample __maybe_unused,
424 struct perf_evsel *evsel __maybe_unused,
425 struct machine *machine __maybe_unused)
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -0300426{
427 dump_printf(": unhandled!\n");
428 return 0;
429}
430
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300431static int process_event_stub(struct perf_tool *tool __maybe_unused,
432 union perf_event *event __maybe_unused,
433 struct perf_sample *sample __maybe_unused,
434 struct machine *machine __maybe_unused)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200435{
436 dump_printf(": unhandled!\n");
437 return 0;
438}
439
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300440static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
441 union perf_event *event __maybe_unused,
442 struct perf_session *perf_session
443 __maybe_unused)
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -0200444{
445 dump_printf(": unhandled!\n");
446 return 0;
447}
448
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300449static int process_event_type_stub(struct perf_tool *tool __maybe_unused,
450 union perf_event *event __maybe_unused)
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200451{
452 dump_printf(": unhandled!\n");
453 return 0;
454}
455
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200456static int process_finished_round(struct perf_tool *tool,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200457 union perf_event *event,
458 struct perf_session *session);
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200459
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200460static void perf_tool__fill_defaults(struct perf_tool *tool)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200461{
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200462 if (tool->sample == NULL)
463 tool->sample = process_event_sample_stub;
464 if (tool->mmap == NULL)
465 tool->mmap = process_event_stub;
466 if (tool->comm == NULL)
467 tool->comm = process_event_stub;
468 if (tool->fork == NULL)
469 tool->fork = process_event_stub;
470 if (tool->exit == NULL)
471 tool->exit = process_event_stub;
472 if (tool->lost == NULL)
473 tool->lost = perf_event__process_lost;
474 if (tool->read == NULL)
475 tool->read = process_event_sample_stub;
476 if (tool->throttle == NULL)
477 tool->throttle = process_event_stub;
478 if (tool->unthrottle == NULL)
479 tool->unthrottle = process_event_stub;
480 if (tool->attr == NULL)
481 tool->attr = process_event_synth_attr_stub;
482 if (tool->event_type == NULL)
483 tool->event_type = process_event_type_stub;
484 if (tool->tracing_data == NULL)
485 tool->tracing_data = process_event_synth_tracing_data_stub;
486 if (tool->build_id == NULL)
487 tool->build_id = process_finished_round_stub;
488 if (tool->finished_round == NULL) {
489 if (tool->ordered_samples)
490 tool->finished_round = process_finished_round;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200491 else
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200492 tool->finished_round = process_finished_round_stub;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200493 }
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200494}
David Ahern80c01202012-06-08 11:47:51 -0300495
496void mem_bswap_32(void *src, int byte_size)
497{
498 u32 *m = src;
499 while (byte_size > 0) {
500 *m = bswap_32(*m);
501 byte_size -= sizeof(u32);
502 ++m;
503 }
504}
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -0200505
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200506void mem_bswap_64(void *src, int byte_size)
507{
508 u64 *m = src;
509
510 while (byte_size > 0) {
511 *m = bswap_64(*m);
512 byte_size -= sizeof(u64);
513 ++m;
514 }
515}
516
Jiri Olsa268fb202012-05-30 14:23:43 +0200517static void swap_sample_id_all(union perf_event *event, void *data)
518{
519 void *end = (void *) event + event->header.size;
520 int size = end - data;
521
522 BUG_ON(size % sizeof(u64));
523 mem_bswap_64(data, size);
524}
525
526static void perf_event__all64_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300527 bool sample_id_all __maybe_unused)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200528{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200529 struct perf_event_header *hdr = &event->header;
530 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200531}
532
Jiri Olsa268fb202012-05-30 14:23:43 +0200533static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200534{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200535 event->comm.pid = bswap_32(event->comm.pid);
536 event->comm.tid = bswap_32(event->comm.tid);
Jiri Olsa268fb202012-05-30 14:23:43 +0200537
538 if (sample_id_all) {
539 void *data = &event->comm.comm;
540
Irina Tirdea9ac3e482012-09-11 01:15:01 +0300541 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
Jiri Olsa268fb202012-05-30 14:23:43 +0200542 swap_sample_id_all(event, data);
543 }
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200544}
545
Jiri Olsa268fb202012-05-30 14:23:43 +0200546static void perf_event__mmap_swap(union perf_event *event,
547 bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200548{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200549 event->mmap.pid = bswap_32(event->mmap.pid);
550 event->mmap.tid = bswap_32(event->mmap.tid);
551 event->mmap.start = bswap_64(event->mmap.start);
552 event->mmap.len = bswap_64(event->mmap.len);
553 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
Jiri Olsa268fb202012-05-30 14:23:43 +0200554
555 if (sample_id_all) {
556 void *data = &event->mmap.filename;
557
Irina Tirdea9ac3e482012-09-11 01:15:01 +0300558 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
Jiri Olsa268fb202012-05-30 14:23:43 +0200559 swap_sample_id_all(event, data);
560 }
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200561}
562
Jiri Olsa268fb202012-05-30 14:23:43 +0200563static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200564{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200565 event->fork.pid = bswap_32(event->fork.pid);
566 event->fork.tid = bswap_32(event->fork.tid);
567 event->fork.ppid = bswap_32(event->fork.ppid);
568 event->fork.ptid = bswap_32(event->fork.ptid);
569 event->fork.time = bswap_64(event->fork.time);
Jiri Olsa268fb202012-05-30 14:23:43 +0200570
571 if (sample_id_all)
572 swap_sample_id_all(event, &event->fork + 1);
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200573}
574
Jiri Olsa268fb202012-05-30 14:23:43 +0200575static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200576{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200577 event->read.pid = bswap_32(event->read.pid);
578 event->read.tid = bswap_32(event->read.tid);
579 event->read.value = bswap_64(event->read.value);
580 event->read.time_enabled = bswap_64(event->read.time_enabled);
581 event->read.time_running = bswap_64(event->read.time_running);
582 event->read.id = bswap_64(event->read.id);
Jiri Olsa268fb202012-05-30 14:23:43 +0200583
584 if (sample_id_all)
585 swap_sample_id_all(event, &event->read + 1);
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200586}
587
Jiri Olsae108c662012-05-16 08:59:03 +0200588static u8 revbyte(u8 b)
589{
590 int rev = (b >> 4) | ((b & 0xf) << 4);
591 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
592 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
593 return (u8) rev;
594}
595
596/*
597 * XXX this is hack in attempt to carry flags bitfield
598 * throught endian village. ABI says:
599 *
600 * Bit-fields are allocated from right to left (least to most significant)
601 * on little-endian implementations and from left to right (most to least
602 * significant) on big-endian implementations.
603 *
604 * The above seems to be byte specific, so we need to reverse each
605 * byte of the bitfield. 'Internet' also says this might be implementation
606 * specific and we probably need proper fix and carry perf_event_attr
607 * bitfield flags in separate data file FEAT_ section. Thought this seems
608 * to work for now.
609 */
610static void swap_bitfield(u8 *p, unsigned len)
611{
612 unsigned i;
613
614 for (i = 0; i < len; i++) {
615 *p = revbyte(*p);
616 p++;
617 }
618}
619
David Aherneda39132011-07-15 12:34:09 -0600620/* exported for swapping attributes in file header */
621void perf_event__attr_swap(struct perf_event_attr *attr)
622{
623 attr->type = bswap_32(attr->type);
624 attr->size = bswap_32(attr->size);
625 attr->config = bswap_64(attr->config);
626 attr->sample_period = bswap_64(attr->sample_period);
627 attr->sample_type = bswap_64(attr->sample_type);
628 attr->read_format = bswap_64(attr->read_format);
629 attr->wakeup_events = bswap_32(attr->wakeup_events);
630 attr->bp_type = bswap_32(attr->bp_type);
631 attr->bp_addr = bswap_64(attr->bp_addr);
632 attr->bp_len = bswap_64(attr->bp_len);
Jiri Olsae108c662012-05-16 08:59:03 +0200633
634 swap_bitfield((u8 *) (&attr->read_format + 1), sizeof(u64));
David Aherneda39132011-07-15 12:34:09 -0600635}
636
Jiri Olsa268fb202012-05-30 14:23:43 +0200637static void perf_event__hdr_attr_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300638 bool sample_id_all __maybe_unused)
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500639{
640 size_t size;
641
David Aherneda39132011-07-15 12:34:09 -0600642 perf_event__attr_swap(&event->attr.attr);
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500643
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200644 size = event->header.size;
645 size -= (void *)&event->attr.id - (void *)event;
646 mem_bswap_64(event->attr.id, size);
Tom Zanussi2c46dbb2010-04-01 23:59:19 -0500647}
648
Jiri Olsa268fb202012-05-30 14:23:43 +0200649static void perf_event__event_type_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300650 bool sample_id_all __maybe_unused)
Tom Zanussicd19a032010-04-01 23:59:20 -0500651{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200652 event->event_type.event_type.event_id =
653 bswap_64(event->event_type.event_type.event_id);
Tom Zanussicd19a032010-04-01 23:59:20 -0500654}
655
Jiri Olsa268fb202012-05-30 14:23:43 +0200656static void perf_event__tracing_data_swap(union perf_event *event,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300657 bool sample_id_all __maybe_unused)
Tom Zanussi92155452010-04-01 23:59:21 -0500658{
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200659 event->tracing_data.size = bswap_32(event->tracing_data.size);
Tom Zanussi92155452010-04-01 23:59:21 -0500660}
661
Jiri Olsa268fb202012-05-30 14:23:43 +0200662typedef void (*perf_event__swap_op)(union perf_event *event,
663 bool sample_id_all);
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200664
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200665static perf_event__swap_op perf_event__swap_ops[] = {
666 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
667 [PERF_RECORD_COMM] = perf_event__comm_swap,
668 [PERF_RECORD_FORK] = perf_event__task_swap,
669 [PERF_RECORD_EXIT] = perf_event__task_swap,
670 [PERF_RECORD_LOST] = perf_event__all64_swap,
671 [PERF_RECORD_READ] = perf_event__read_swap,
672 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
David Aherneda39132011-07-15 12:34:09 -0600673 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200674 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
675 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
676 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
677 [PERF_RECORD_HEADER_MAX] = NULL,
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -0200678};
679
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200680struct sample_queue {
681 u64 timestamp;
Thomas Gleixnere4c2df12010-12-07 12:48:50 +0000682 u64 file_offset;
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200683 union perf_event *event;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200684 struct list_head list;
685};
686
Thomas Gleixner020bb752010-11-30 17:49:53 +0000687static void perf_session_free_sample_buffers(struct perf_session *session)
688{
689 struct ordered_samples *os = &session->ordered_samples;
690
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000691 while (!list_empty(&os->to_free)) {
Thomas Gleixner020bb752010-11-30 17:49:53 +0000692 struct sample_queue *sq;
693
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000694 sq = list_entry(os->to_free.next, struct sample_queue, list);
Thomas Gleixner020bb752010-11-30 17:49:53 +0000695 list_del(&sq->list);
696 free(sq);
697 }
698}
699
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100700static int perf_session_deliver_event(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200701 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200702 struct perf_sample *sample,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200703 struct perf_tool *tool,
Thomas Gleixnerf74725d2010-12-07 12:48:53 +0000704 u64 file_offset);
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100705
David Ahernd25380cd2012-08-26 12:24:41 -0600706static int flush_sample_queue(struct perf_session *s,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200707 struct perf_tool *tool)
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200708{
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000709 struct ordered_samples *os = &s->ordered_samples;
710 struct list_head *head = &os->samples;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200711 struct sample_queue *tmp, *iter;
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200712 struct perf_sample sample;
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000713 u64 limit = os->next_flush;
714 u64 last_ts = os->last_sample ? os->last_sample->timestamp : 0ULL;
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200715 unsigned idx = 0, progress_next = os->nr_samples / 16;
Frederic Weisbecker5538bec2011-05-22 02:17:22 +0200716 int ret;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200717
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200718 if (!tool->ordered_samples || !limit)
David Ahernd25380cd2012-08-26 12:24:41 -0600719 return 0;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200720
721 list_for_each_entry_safe(iter, tmp, head, list) {
722 if (iter->timestamp > limit)
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000723 break;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200724
Arnaldo Carvalho de Melo0807d2d2012-09-26 12:48:18 -0300725 ret = perf_evlist__parse_sample(s->evlist, iter->event, &sample);
Frederic Weisbecker5538bec2011-05-22 02:17:22 +0200726 if (ret)
727 pr_err("Can't parse sample, err = %d\n", ret);
David Ahernd25380cd2012-08-26 12:24:41 -0600728 else {
729 ret = perf_session_deliver_event(s, iter->event, &sample, tool,
730 iter->file_offset);
731 if (ret)
732 return ret;
733 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200734
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000735 os->last_flush = iter->timestamp;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200736 list_del(&iter->list);
Thomas Gleixner020bb752010-11-30 17:49:53 +0000737 list_add(&iter->list, &os->sample_cache);
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200738 if (++idx >= progress_next) {
739 progress_next += os->nr_samples / 16;
740 ui_progress__update(idx, os->nr_samples,
741 "Processing time ordered events...");
742 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200743 }
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000744
745 if (list_empty(head)) {
746 os->last_sample = NULL;
747 } else if (last_ts <= limit) {
748 os->last_sample =
749 list_entry(head->prev, struct sample_queue, list);
750 }
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200751
752 os->nr_samples = 0;
David Ahernd25380cd2012-08-26 12:24:41 -0600753
754 return 0;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200755}
756
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200757/*
758 * When perf record finishes a pass on every buffers, it records this pseudo
759 * event.
760 * We record the max timestamp t found in the pass n.
761 * Assuming these timestamps are monotonic across cpus, we know that if
762 * a buffer still has events with timestamps below t, they will be all
763 * available and then read in the pass n + 1.
764 * Hence when we start to read the pass n + 2, we can safely flush every
765 * events with timestamps below t.
766 *
767 * ============ PASS n =================
768 * CPU 0 | CPU 1
769 * |
770 * cnt1 timestamps | cnt2 timestamps
771 * 1 | 2
772 * 2 | 3
773 * - | 4 <--- max recorded
774 *
775 * ============ PASS n + 1 ==============
776 * CPU 0 | CPU 1
777 * |
778 * cnt1 timestamps | cnt2 timestamps
779 * 3 | 5
780 * 4 | 6
781 * 5 | 7 <---- max recorded
782 *
783 * Flush every events below timestamp 4
784 *
785 * ============ PASS n + 2 ==============
786 * CPU 0 | CPU 1
787 * |
788 * cnt1 timestamps | cnt2 timestamps
789 * 6 | 8
790 * 7 | 9
791 * - | 10
792 *
793 * Flush every events below timestamp 7
794 * etc...
795 */
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -0200796static int process_finished_round(struct perf_tool *tool,
Irina Tirdea1d037ca2012-09-11 01:15:03 +0300797 union perf_event *event __maybe_unused,
Arnaldo Carvalho de Melod20deb62011-11-25 08:19:45 -0200798 struct perf_session *session)
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200799{
David Ahernd25380cd2012-08-26 12:24:41 -0600800 int ret = flush_sample_queue(session, tool);
801 if (!ret)
802 session->ordered_samples.next_flush = session->ordered_samples.max_timestamp;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200803
David Ahernd25380cd2012-08-26 12:24:41 -0600804 return ret;
Frederic Weisbeckerd6b17be2010-05-03 15:14:33 +0200805}
806
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200807/* The queue is ordered by time */
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100808static void __queue_event(struct sample_queue *new, struct perf_session *s)
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200809{
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000810 struct ordered_samples *os = &s->ordered_samples;
811 struct sample_queue *sample = os->last_sample;
812 u64 timestamp = new->timestamp;
813 struct list_head *p;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200814
Arnaldo Carvalho de Melo88660562011-10-29 12:41:45 -0200815 ++os->nr_samples;
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000816 os->last_sample = new;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200817
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000818 if (!sample) {
819 list_add(&new->list, &os->samples);
820 os->max_timestamp = timestamp;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200821 return;
822 }
823
824 /*
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000825 * last_sample might point to some random place in the list as it's
826 * the last queued event. We expect that the new event is close to
827 * this.
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200828 */
Thomas Gleixnera1225de2010-11-30 17:49:33 +0000829 if (sample->timestamp <= timestamp) {
830 while (sample->timestamp <= timestamp) {
831 p = sample->list.next;
832 if (p == &os->samples) {
833 list_add_tail(&new->list, &os->samples);
834 os->max_timestamp = timestamp;
835 return;
836 }
837 sample = list_entry(p, struct sample_queue, list);
838 }
839 list_add_tail(&new->list, &sample->list);
840 } else {
841 while (sample->timestamp > timestamp) {
842 p = sample->list.prev;
843 if (p == &os->samples) {
844 list_add(&new->list, &os->samples);
845 return;
846 }
847 sample = list_entry(p, struct sample_queue, list);
848 }
849 list_add(&new->list, &sample->list);
850 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200851}
852
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000853#define MAX_SAMPLE_BUFFER (64 * 1024 / sizeof(struct sample_queue))
854
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200855static int perf_session_queue_event(struct perf_session *s, union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200856 struct perf_sample *sample, u64 file_offset)
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200857{
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000858 struct ordered_samples *os = &s->ordered_samples;
859 struct list_head *sc = &os->sample_cache;
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200860 u64 timestamp = sample->time;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200861 struct sample_queue *new;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200862
Thomas Gleixner79a14c12010-12-07 12:48:44 +0000863 if (!timestamp || timestamp == ~0ULL)
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100864 return -ETIME;
865
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200866 if (timestamp < s->ordered_samples.last_flush) {
867 printf("Warning: Timestamp below last timeslice flush\n");
868 return -EINVAL;
869 }
870
Thomas Gleixner020bb752010-11-30 17:49:53 +0000871 if (!list_empty(sc)) {
872 new = list_entry(sc->next, struct sample_queue, list);
873 list_del(&new->list);
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000874 } else if (os->sample_buffer) {
875 new = os->sample_buffer + os->sample_buffer_idx;
876 if (++os->sample_buffer_idx == MAX_SAMPLE_BUFFER)
877 os->sample_buffer = NULL;
Thomas Gleixner020bb752010-11-30 17:49:53 +0000878 } else {
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000879 os->sample_buffer = malloc(MAX_SAMPLE_BUFFER * sizeof(*new));
880 if (!os->sample_buffer)
Thomas Gleixner020bb752010-11-30 17:49:53 +0000881 return -ENOMEM;
Thomas Gleixner5c891f32010-11-30 17:49:55 +0000882 list_add(&os->sample_buffer->list, &os->to_free);
883 os->sample_buffer_idx = 2;
884 new = os->sample_buffer + 1;
Thomas Gleixner020bb752010-11-30 17:49:53 +0000885 }
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200886
887 new->timestamp = timestamp;
Thomas Gleixnere4c2df12010-12-07 12:48:50 +0000888 new->file_offset = file_offset;
Thomas Gleixnerfe174202010-11-30 17:49:49 +0000889 new->event = event;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200890
Thomas Gleixnercbf41642010-12-05 14:32:55 +0100891 __queue_event(new, s);
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +0200892
893 return 0;
894}
895
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200896static void callchain__printf(struct perf_sample *sample)
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -0200897{
898 unsigned int i;
899
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200900 printf("... chain: nr:%" PRIu64 "\n", sample->callchain->nr);
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -0200901
902 for (i = 0; i < sample->callchain->nr; i++)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200903 printf("..... %2d: %016" PRIx64 "\n",
904 i, sample->callchain->ips[i]);
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -0200905}
906
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +0100907static void branch_stack__printf(struct perf_sample *sample)
908{
909 uint64_t i;
910
911 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
912
913 for (i = 0; i < sample->branch_stack->nr; i++)
914 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 "\n",
915 i, sample->branch_stack->entries[i].from,
916 sample->branch_stack->entries[i].to);
917}
918
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200919static void regs_dump__printf(u64 mask, u64 *regs)
920{
921 unsigned rid, i = 0;
922
923 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
924 u64 val = regs[i++];
925
926 printf(".... %-5s 0x%" PRIx64 "\n",
927 perf_reg_name(rid), val);
928 }
929}
930
931static void regs_user__printf(struct perf_sample *sample, u64 mask)
932{
933 struct regs_dump *user_regs = &sample->user_regs;
934
935 if (user_regs->regs) {
936 printf("... user regs: mask 0x%" PRIx64 "\n", mask);
937 regs_dump__printf(mask, user_regs->regs);
938 }
939}
940
941static void stack_user__printf(struct stack_dump *dump)
942{
943 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
944 dump->size, dump->offset);
945}
946
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200947static void perf_session__print_tstamp(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200948 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200949 struct perf_sample *sample)
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200950{
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300951 u64 sample_type = perf_evlist__sample_type(session->evlist);
952
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200953 if (event->header.type != PERF_RECORD_SAMPLE &&
Arnaldo Carvalho de Melo5e562472012-08-01 19:25:26 -0300954 !perf_evlist__sample_id_all(session->evlist)) {
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200955 fputs("-1 -1 ", stdout);
956 return;
957 }
958
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300959 if ((sample_type & PERF_SAMPLE_CPU))
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200960 printf("%u ", sample->cpu);
961
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300962 if (sample_type & PERF_SAMPLE_TIME)
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200963 printf("%" PRIu64 " ", sample->time);
Arnaldo Carvalho de Melo9c90a612010-12-02 10:25:28 -0200964}
965
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200966static void dump_event(struct perf_session *session, union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200967 u64 file_offset, struct perf_sample *sample)
Thomas Gleixner9aefcab02010-12-07 12:48:47 +0000968{
969 if (!dump_trace)
970 return;
971
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200972 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
973 file_offset, event->header.size, event->header.type);
Thomas Gleixner9aefcab02010-12-07 12:48:47 +0000974
975 trace_event(event);
976
977 if (sample)
978 perf_session__print_tstamp(session, event, sample);
979
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200980 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -0200981 event->header.size, perf_event__name(event->header.type));
Thomas Gleixner9aefcab02010-12-07 12:48:47 +0000982}
983
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200984static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -0200985 struct perf_sample *sample)
Thomas Gleixner9aefcab02010-12-07 12:48:47 +0000986{
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300987 u64 sample_type;
988
Arnaldo Carvalho de Meloddbc24b2010-12-09 12:20:20 -0200989 if (!dump_trace)
990 return;
991
David Ahern7cec0922011-05-30 13:08:23 -0600992 printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
Arnaldo Carvalho de Melo9486aa32011-01-22 20:37:02 -0200993 event->header.misc, sample->pid, sample->tid, sample->ip,
David Ahern7cec0922011-05-30 13:08:23 -0600994 sample->period, sample->addr);
Thomas Gleixner9aefcab02010-12-07 12:48:47 +0000995
Jiri Olsa0f6a3012012-08-07 15:20:45 +0200996 sample_type = evsel->attr.sample_type;
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -0300997
998 if (sample_type & PERF_SAMPLE_CALLCHAIN)
Arnaldo Carvalho de Meloddbc24b2010-12-09 12:20:20 -0200999 callchain__printf(sample);
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +01001000
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -03001001 if (sample_type & PERF_SAMPLE_BRANCH_STACK)
Roberto Agostino Vitillob5387522012-02-09 23:21:01 +01001002 branch_stack__printf(sample);
Jiri Olsa0f6a3012012-08-07 15:20:45 +02001003
1004 if (sample_type & PERF_SAMPLE_REGS_USER)
1005 regs_user__printf(sample, evsel->attr.sample_regs_user);
1006
1007 if (sample_type & PERF_SAMPLE_STACK_USER)
1008 stack_user__printf(&sample->user_stack);
Thomas Gleixner9aefcab02010-12-07 12:48:47 +00001009}
1010
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001011static struct machine *
1012 perf_session__find_machine_for_cpumode(struct perf_session *session,
1013 union perf_event *event)
1014{
1015 const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1016
David Ahern7c0f4a42012-07-20 17:25:48 -06001017 if (perf_guest &&
1018 ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1019 (cpumode == PERF_RECORD_MISC_GUEST_USER))) {
Nikunj A. Dadhania7fb0a5e2012-04-09 13:52:23 +05301020 u32 pid;
1021
1022 if (event->header.type == PERF_RECORD_MMAP)
1023 pid = event->mmap.pid;
1024 else
1025 pid = event->ip.pid;
1026
David Ahern207b5792012-07-01 16:11:37 -06001027 return perf_session__findnew_machine(session, pid);
Nikunj A. Dadhania7fb0a5e2012-04-09 13:52:23 +05301028 }
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001029
1030 return perf_session__find_host_machine(session);
1031}
1032
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001033static int perf_session_deliver_event(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001034 union perf_event *event,
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -02001035 struct perf_sample *sample,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001036 struct perf_tool *tool,
Thomas Gleixner532e7262010-12-07 12:48:55 +00001037 u64 file_offset)
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001038{
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001039 struct perf_evsel *evsel;
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001040 struct machine *machine;
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001041
Thomas Gleixner532e7262010-12-07 12:48:55 +00001042 dump_event(session, event, file_offset, sample);
1043
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -02001044 evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1045 if (evsel != NULL && event->header.type != PERF_RECORD_SAMPLE) {
1046 /*
1047 * XXX We're leaving PERF_RECORD_SAMPLE unnacounted here
1048 * because the tools right now may apply filters, discarding
1049 * some of the samples. For consistency, in the future we
1050 * should have something like nr_filtered_samples and remove
1051 * the sample->period from total_sample_period, etc, KISS for
1052 * now tho.
1053 *
1054 * Also testing against NULL allows us to handle files without
1055 * attr.sample_id_all and/or without PERF_SAMPLE_ID. In the
1056 * future probably it'll be a good idea to restrict event
1057 * processing via perf_session to files with both set.
1058 */
1059 hists__inc_nr_events(&evsel->hists, event->header.type);
1060 }
1061
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001062 machine = perf_session__find_machine_for_cpumode(session, event);
1063
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001064 switch (event->header.type) {
1065 case PERF_RECORD_SAMPLE:
Jiri Olsa0f6a3012012-08-07 15:20:45 +02001066 dump_sample(evsel, event, sample);
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001067 if (evsel == NULL) {
1068 ++session->hists.stats.nr_unknown_id;
Jiri Olsa67822062012-04-12 14:21:01 +02001069 return 0;
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001070 }
Joerg Roedel0c095712012-02-10 18:05:04 +01001071 if (machine == NULL) {
1072 ++session->hists.stats.nr_unprocessable_samples;
Jiri Olsa67822062012-04-12 14:21:01 +02001073 return 0;
Joerg Roedel0c095712012-02-10 18:05:04 +01001074 }
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001075 return tool->sample(tool, event, sample, evsel, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001076 case PERF_RECORD_MMAP:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001077 return tool->mmap(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001078 case PERF_RECORD_COMM:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001079 return tool->comm(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001080 case PERF_RECORD_FORK:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001081 return tool->fork(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001082 case PERF_RECORD_EXIT:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001083 return tool->exit(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001084 case PERF_RECORD_LOST:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001085 if (tool->lost == perf_event__process_lost)
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001086 session->hists.stats.total_lost += event->lost.lost;
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001087 return tool->lost(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001088 case PERF_RECORD_READ:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001089 return tool->read(tool, event, sample, evsel, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001090 case PERF_RECORD_THROTTLE:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001091 return tool->throttle(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001092 case PERF_RECORD_UNTHROTTLE:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001093 return tool->unthrottle(tool, event, sample, machine);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001094 default:
1095 ++session->hists.stats.nr_unknown_events;
1096 return -1;
1097 }
1098}
1099
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001100static int perf_session__preprocess_sample(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001101 union perf_event *event, struct perf_sample *sample)
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001102{
1103 if (event->header.type != PERF_RECORD_SAMPLE ||
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -03001104 !(perf_evlist__sample_type(session->evlist) & PERF_SAMPLE_CALLCHAIN))
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001105 return 0;
1106
1107 if (!ip_callchain__valid(sample->callchain, event)) {
1108 pr_debug("call-chain problem with event, skipping it.\n");
1109 ++session->hists.stats.nr_invalid_chains;
1110 session->hists.stats.total_invalid_chains += sample->period;
1111 return -EINVAL;
1112 }
1113 return 0;
1114}
1115
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001116static int perf_session__process_user_event(struct perf_session *session, union perf_event *event,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001117 struct perf_tool *tool, u64 file_offset)
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001118{
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -02001119 int err;
1120
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001121 dump_event(session, event, file_offset, NULL);
1122
1123 /* These events are processed right away */
1124 switch (event->header.type) {
1125 case PERF_RECORD_HEADER_ATTR:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001126 err = tool->attr(event, &session->evlist);
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -02001127 if (err == 0)
Arnaldo Carvalho de Melo7b56cce2012-08-01 19:31:00 -03001128 perf_session__set_id_hdr_size(session);
Arnaldo Carvalho de Melo10d0f082011-11-11 22:45:41 -02001129 return err;
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001130 case PERF_RECORD_HEADER_EVENT_TYPE:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001131 return tool->event_type(tool, event);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001132 case PERF_RECORD_HEADER_TRACING_DATA:
1133 /* setup for reading amidst mmap */
1134 lseek(session->fd, file_offset, SEEK_SET);
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001135 return tool->tracing_data(event, session);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001136 case PERF_RECORD_HEADER_BUILD_ID:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001137 return tool->build_id(tool, event, session);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001138 case PERF_RECORD_FINISHED_ROUND:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001139 return tool->finished_round(tool, event, session);
Thomas Gleixnerba74f062010-12-07 12:49:01 +00001140 default:
1141 return -EINVAL;
1142 }
1143}
1144
Jiri Olsa268fb202012-05-30 14:23:43 +02001145static void event_swap(union perf_event *event, bool sample_id_all)
1146{
1147 perf_event__swap_op swap;
1148
1149 swap = perf_event__swap_ops[event->header.type];
1150 if (swap)
1151 swap(event, sample_id_all);
1152}
1153
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001154static int perf_session__process_event(struct perf_session *session,
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001155 union perf_event *event,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001156 struct perf_tool *tool,
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001157 u64 file_offset)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001158{
Arnaldo Carvalho de Melo8d50e5b2011-01-29 13:02:00 -02001159 struct perf_sample sample;
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001160 int ret;
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001161
Jiri Olsa268fb202012-05-30 14:23:43 +02001162 if (session->header.needs_swap)
Arnaldo Carvalho de Melo5e562472012-08-01 19:25:26 -03001163 event_swap(event, perf_evlist__sample_id_all(session->evlist));
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001164
Thomas Gleixner9aefcab02010-12-07 12:48:47 +00001165 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1166 return -EINVAL;
Arnaldo Carvalho de Melo640c03c2010-12-02 14:10:21 -02001167
Thomas Gleixner9aefcab02010-12-07 12:48:47 +00001168 hists__inc_nr_events(&session->hists, event->header.type);
1169
1170 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001171 return perf_session__process_user_event(session, event, tool, file_offset);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001172
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001173 /*
1174 * For all kernel events we get the sample data
1175 */
Arnaldo Carvalho de Melo0807d2d2012-09-26 12:48:18 -03001176 ret = perf_evlist__parse_sample(session->evlist, event, &sample);
Frederic Weisbecker5538bec2011-05-22 02:17:22 +02001177 if (ret)
1178 return ret;
Thomas Gleixner3dfc2c02010-12-07 12:48:58 +00001179
1180 /* Preprocess sample records - precheck callchains */
1181 if (perf_session__preprocess_sample(session, event, &sample))
1182 return 0;
1183
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001184 if (tool->ordered_samples) {
Thomas Gleixnere4c2df12010-12-07 12:48:50 +00001185 ret = perf_session_queue_event(session, event, &sample,
1186 file_offset);
Thomas Gleixnercbf41642010-12-05 14:32:55 +01001187 if (ret != -ETIME)
1188 return ret;
1189 }
1190
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001191 return perf_session_deliver_event(session, event, &sample, tool,
Thomas Gleixnerf74725d2010-12-07 12:48:53 +00001192 file_offset);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001193}
1194
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02001195void perf_event_header__bswap(struct perf_event_header *self)
1196{
1197 self->type = bswap_32(self->type);
1198 self->misc = bswap_16(self->misc);
1199 self->size = bswap_16(self->size);
1200}
1201
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -02001202struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1203{
1204 return machine__findnew_thread(&session->host_machine, pid);
1205}
1206
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001207static struct thread *perf_session__register_idle_thread(struct perf_session *self)
1208{
1209 struct thread *thread = perf_session__findnew(self, 0);
1210
1211 if (thread == NULL || thread__set_comm(thread, "swapper")) {
1212 pr_err("problem inserting idle task.\n");
1213 thread = NULL;
1214 }
1215
1216 return thread;
1217}
1218
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001219static void perf_session__warn_about_errors(const struct perf_session *session,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001220 const struct perf_tool *tool)
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001221{
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001222 if (tool->lost == perf_event__process_lost &&
Arnaldo Carvalho de Melo7b275092011-10-29 12:15:04 -02001223 session->hists.stats.nr_events[PERF_RECORD_LOST] != 0) {
1224 ui__warning("Processed %d events and lost %d chunks!\n\n"
1225 "Check IO/CPU overload!\n\n",
1226 session->hists.stats.nr_events[0],
1227 session->hists.stats.nr_events[PERF_RECORD_LOST]);
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001228 }
1229
1230 if (session->hists.stats.nr_unknown_events != 0) {
1231 ui__warning("Found %u unknown events!\n\n"
1232 "Is this an older tool processing a perf.data "
1233 "file generated by a more recent tool?\n\n"
1234 "If that is not the case, consider "
1235 "reporting to linux-kernel@vger.kernel.org.\n\n",
1236 session->hists.stats.nr_unknown_events);
1237 }
1238
Arnaldo Carvalho de Melo9e69c212011-03-15 15:44:01 -03001239 if (session->hists.stats.nr_unknown_id != 0) {
1240 ui__warning("%u samples with id not present in the header\n",
1241 session->hists.stats.nr_unknown_id);
1242 }
1243
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001244 if (session->hists.stats.nr_invalid_chains != 0) {
1245 ui__warning("Found invalid callchains!\n\n"
1246 "%u out of %u events were discarded for this reason.\n\n"
1247 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
1248 session->hists.stats.nr_invalid_chains,
1249 session->hists.stats.nr_events[PERF_RECORD_SAMPLE]);
1250 }
Joerg Roedel0c095712012-02-10 18:05:04 +01001251
1252 if (session->hists.stats.nr_unprocessable_samples != 0) {
1253 ui__warning("%u unprocessable samples recorded.\n"
1254 "Do you have a KVM guest running and not using 'perf kvm'?\n",
1255 session->hists.stats.nr_unprocessable_samples);
1256 }
Arnaldo Carvalho de Melo11095992011-01-04 16:25:15 -02001257}
1258
Tom Zanussi8dc58102010-04-01 23:59:15 -05001259#define session_done() (*(volatile int *)(&session_done))
1260volatile int session_done;
1261
1262static int __perf_session__process_pipe_events(struct perf_session *self,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001263 struct perf_tool *tool)
Tom Zanussi8dc58102010-04-01 23:59:15 -05001264{
Stephane Eranian444d2862012-05-15 13:28:12 +02001265 union perf_event *event;
1266 uint32_t size, cur_size = 0;
1267 void *buf = NULL;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001268 int skip = 0;
1269 u64 head;
1270 int err;
1271 void *p;
1272
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001273 perf_tool__fill_defaults(tool);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001274
1275 head = 0;
Stephane Eranian444d2862012-05-15 13:28:12 +02001276 cur_size = sizeof(union perf_event);
1277
1278 buf = malloc(cur_size);
1279 if (!buf)
1280 return -errno;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001281more:
Stephane Eranian444d2862012-05-15 13:28:12 +02001282 event = buf;
1283 err = readn(self->fd, event, sizeof(struct perf_event_header));
Tom Zanussi8dc58102010-04-01 23:59:15 -05001284 if (err <= 0) {
1285 if (err == 0)
1286 goto done;
1287
1288 pr_err("failed to read event header\n");
1289 goto out_err;
1290 }
1291
1292 if (self->header.needs_swap)
Stephane Eranian444d2862012-05-15 13:28:12 +02001293 perf_event_header__bswap(&event->header);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001294
Stephane Eranian444d2862012-05-15 13:28:12 +02001295 size = event->header.size;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001296 if (size == 0)
1297 size = 8;
1298
Stephane Eranian444d2862012-05-15 13:28:12 +02001299 if (size > cur_size) {
1300 void *new = realloc(buf, size);
1301 if (!new) {
1302 pr_err("failed to allocate memory to read event\n");
1303 goto out_err;
1304 }
1305 buf = new;
1306 cur_size = size;
1307 event = buf;
1308 }
1309 p = event;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001310 p += sizeof(struct perf_event_header);
1311
Tom Zanussi794e43b2010-05-05 00:27:40 -05001312 if (size - sizeof(struct perf_event_header)) {
Arnaldo Carvalho de Melo1e7972c2011-01-03 16:50:55 -02001313 err = readn(self->fd, p, size - sizeof(struct perf_event_header));
Tom Zanussi794e43b2010-05-05 00:27:40 -05001314 if (err <= 0) {
1315 if (err == 0) {
1316 pr_err("unexpected end of event stream\n");
1317 goto done;
1318 }
Tom Zanussi8dc58102010-04-01 23:59:15 -05001319
Tom Zanussi794e43b2010-05-05 00:27:40 -05001320 pr_err("failed to read event data\n");
1321 goto out_err;
1322 }
Tom Zanussi8dc58102010-04-01 23:59:15 -05001323 }
1324
Stephane Eranian444d2862012-05-15 13:28:12 +02001325 if ((skip = perf_session__process_event(self, event, tool, head)) < 0) {
Jiri Olsa9389a462012-04-16 20:42:51 +02001326 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
Stephane Eranian444d2862012-05-15 13:28:12 +02001327 head, event->header.size, event->header.type);
Jiri Olsa9389a462012-04-16 20:42:51 +02001328 err = -EINVAL;
1329 goto out_err;
Tom Zanussi8dc58102010-04-01 23:59:15 -05001330 }
1331
1332 head += size;
1333
Tom Zanussi8dc58102010-04-01 23:59:15 -05001334 if (skip > 0)
1335 head += skip;
1336
1337 if (!session_done())
1338 goto more;
1339done:
1340 err = 0;
1341out_err:
Stephane Eranian444d2862012-05-15 13:28:12 +02001342 free(buf);
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001343 perf_session__warn_about_errors(self, tool);
Thomas Gleixner020bb752010-11-30 17:49:53 +00001344 perf_session_free_sample_buffers(self);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001345 return err;
1346}
1347
Frederic Weisbecker998bedc2011-05-23 13:06:28 +02001348static union perf_event *
1349fetch_mmaped_event(struct perf_session *session,
1350 u64 head, size_t mmap_size, char *buf)
1351{
1352 union perf_event *event;
1353
1354 /*
1355 * Ensure we have enough space remaining to read
1356 * the size of the event in the headers.
1357 */
1358 if (head + sizeof(event->header) > mmap_size)
1359 return NULL;
1360
1361 event = (union perf_event *)(buf + head);
1362
1363 if (session->header.needs_swap)
1364 perf_event_header__bswap(&event->header);
1365
1366 if (head + event->header.size > mmap_size)
1367 return NULL;
1368
1369 return event;
1370}
1371
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001372int __perf_session__process_events(struct perf_session *session,
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001373 u64 data_offset, u64 data_size,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001374 u64 file_size, struct perf_tool *tool)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001375{
Thomas Gleixner55b446292010-11-30 17:49:46 +00001376 u64 head, page_offset, file_offset, file_pos, progress_next;
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001377 int err, mmap_prot, mmap_flags, map_idx = 0;
Arnaldo Carvalho de Melo0c1fe6b2012-10-06 14:57:10 -03001378 size_t mmap_size;
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001379 char *buf, *mmaps[8];
Arnaldo Carvalho de Melo8115d602011-01-29 14:01:45 -02001380 union perf_event *event;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001381 uint32_t size;
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001382
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001383 perf_tool__fill_defaults(tool);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001384
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001385 page_offset = page_size * (data_offset / page_size);
1386 file_offset = page_offset;
1387 head = data_offset - page_offset;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001388
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001389 if (data_offset + data_size < file_size)
1390 file_size = data_offset + data_size;
1391
Thomas Gleixner55b446292010-11-30 17:49:46 +00001392 progress_next = file_size / 16;
Thomas Gleixner55b446292010-11-30 17:49:46 +00001393
1394 mmap_size = session->mmap_window;
1395 if (mmap_size > file_size)
1396 mmap_size = file_size;
1397
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001398 memset(mmaps, 0, sizeof(mmaps));
1399
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02001400 mmap_prot = PROT_READ;
1401 mmap_flags = MAP_SHARED;
1402
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001403 if (session->header.needs_swap) {
Arnaldo Carvalho de Meloba215942010-01-14 12:23:10 -02001404 mmap_prot |= PROT_WRITE;
1405 mmap_flags = MAP_PRIVATE;
1406 }
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001407remap:
Thomas Gleixner55b446292010-11-30 17:49:46 +00001408 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, session->fd,
1409 file_offset);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001410 if (buf == MAP_FAILED) {
1411 pr_err("failed to mmap file\n");
1412 err = -errno;
1413 goto out_err;
1414 }
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001415 mmaps[map_idx] = buf;
1416 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001417 file_pos = file_offset + head;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001418
1419more:
Frederic Weisbecker998bedc2011-05-23 13:06:28 +02001420 event = fetch_mmaped_event(session, head, mmap_size, buf);
1421 if (!event) {
Thomas Gleixnerfe174202010-11-30 17:49:49 +00001422 if (mmaps[map_idx]) {
1423 munmap(mmaps[map_idx], mmap_size);
1424 mmaps[map_idx] = NULL;
1425 }
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001426
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001427 page_offset = page_size * (head / page_size);
1428 file_offset += page_offset;
1429 head -= page_offset;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001430 goto remap;
1431 }
1432
1433 size = event->header.size;
1434
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001435 if (size == 0 ||
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001436 perf_session__process_event(session, event, tool, file_pos) < 0) {
Jiri Olsa9389a462012-04-16 20:42:51 +02001437 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1438 file_offset + head, event->header.size,
1439 event->header.type);
1440 err = -EINVAL;
1441 goto out_err;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001442 }
1443
1444 head += size;
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001445 file_pos += size;
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001446
Thomas Gleixner55b446292010-11-30 17:49:46 +00001447 if (file_pos >= progress_next) {
1448 progress_next += file_size / 16;
Arnaldo Carvalho de Meloca59bcb2011-10-25 13:29:11 -02001449 ui_progress__update(file_pos, file_size,
1450 "Processing events...");
Thomas Gleixner55b446292010-11-30 17:49:46 +00001451 }
1452
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001453 if (file_pos < file_size)
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001454 goto more;
Thomas Gleixnerd6513282010-11-30 17:49:44 +00001455
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001456 err = 0;
Frederic Weisbeckerc61e52e2010-04-24 00:04:12 +02001457 /* do the final flush for ordered samples */
Thomas Gleixner0331ee02010-11-30 17:49:38 +00001458 session->ordered_samples.next_flush = ULLONG_MAX;
David Ahernd25380cd2012-08-26 12:24:41 -06001459 err = flush_sample_queue(session, tool);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001460out_err:
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001461 perf_session__warn_about_errors(session, tool);
Thomas Gleixner020bb752010-11-30 17:49:53 +00001462 perf_session_free_sample_buffers(session);
Arnaldo Carvalho de Melo06aae5902009-12-27 21:36:59 -02001463 return err;
1464}
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001465
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001466int perf_session__process_events(struct perf_session *self,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001467 struct perf_tool *tool)
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001468{
1469 int err;
1470
1471 if (perf_session__register_idle_thread(self) == NULL)
1472 return -ENOMEM;
1473
Tom Zanussi8dc58102010-04-01 23:59:15 -05001474 if (!self->fd_pipe)
1475 err = __perf_session__process_events(self,
1476 self->header.data_offset,
1477 self->header.data_size,
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001478 self->size, tool);
Tom Zanussi8dc58102010-04-01 23:59:15 -05001479 else
Arnaldo Carvalho de Melo45694aa2011-11-28 08:30:20 -02001480 err = __perf_session__process_pipe_events(self, tool);
Dave Martin88ca8952010-07-27 11:46:12 -03001481
Arnaldo Carvalho de Melo6122e4e2010-02-03 16:52:05 -02001482 return err;
1483}
1484
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -03001485bool perf_session__has_traces(struct perf_session *session, const char *msg)
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001486{
Arnaldo Carvalho de Melo7f3be652012-08-01 19:15:52 -03001487 if (!(perf_evlist__sample_type(session->evlist) & PERF_SAMPLE_RAW)) {
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -02001488 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
1489 return false;
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001490 }
1491
Arnaldo Carvalho de Melod549c7692009-12-27 21:37:02 -02001492 return true;
Arnaldo Carvalho de Melo27295592009-12-27 21:37:01 -02001493}
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001494
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001495int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
1496 const char *symbol_name, u64 addr)
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001497{
1498 char *bracket;
Arnaldo Carvalho de Melo9de89fe2010-02-03 16:52:00 -02001499 enum map_type i;
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001500 struct ref_reloc_sym *ref;
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001501
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001502 ref = zalloc(sizeof(struct ref_reloc_sym));
1503 if (ref == NULL)
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001504 return -ENOMEM;
1505
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001506 ref->name = strdup(symbol_name);
1507 if (ref->name == NULL) {
1508 free(ref);
1509 return -ENOMEM;
1510 }
1511
1512 bracket = strchr(ref->name, ']');
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001513 if (bracket)
1514 *bracket = '\0';
1515
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001516 ref->addr = addr;
Arnaldo Carvalho de Melo9de89fe2010-02-03 16:52:00 -02001517
1518 for (i = 0; i < MAP__NR_TYPES; ++i) {
Zhang, Yanmina1645ce2010-04-19 13:32:50 +08001519 struct kmap *kmap = map__kmap(maps[i]);
1520 kmap->ref_reloc_sym = ref;
Arnaldo Carvalho de Melo9de89fe2010-02-03 16:52:00 -02001521 }
1522
Arnaldo Carvalho de Melo56b03f32010-01-05 16:50:31 -02001523 return 0;
1524}
Arnaldo Carvalho de Melo1f626bc2010-05-09 19:57:08 -03001525
1526size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp)
1527{
1528 return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) +
1529 __dsos__fprintf(&self->host_machine.user_dsos, fp) +
1530 machines__fprintf_dsos(&self->machines, fp);
1531}
Arnaldo Carvalho de Melof8690972010-05-19 13:41:23 -03001532
1533size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp,
1534 bool with_hits)
1535{
1536 size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits);
1537 return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits);
1538}
Arnaldo Carvalho de Meloe248de32011-03-05 21:40:06 -03001539
1540size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
1541{
1542 struct perf_evsel *pos;
1543 size_t ret = fprintf(fp, "Aggregated stats:\n");
1544
1545 ret += hists__fprintf_nr_events(&session->hists, fp);
1546
1547 list_for_each_entry(pos, &session->evlist->entries, node) {
Arnaldo Carvalho de Melo7289f832012-06-12 12:34:58 -03001548 ret += fprintf(fp, "%s stats:\n", perf_evsel__name(pos));
Arnaldo Carvalho de Meloe248de32011-03-05 21:40:06 -03001549 ret += hists__fprintf_nr_events(&pos->hists, fp);
1550 }
1551
1552 return ret;
1553}
David Ahernc0230b22011-03-09 22:23:27 -07001554
Arnaldo Carvalho de Melob424eba2011-11-09 13:24:25 -02001555size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
1556{
1557 /*
1558 * FIXME: Here we have to actually print all the machines in this
1559 * session, not just the host...
1560 */
1561 return machine__fprintf(&session->host_machine, fp);
1562}
1563
1564void perf_session__remove_thread(struct perf_session *session,
1565 struct thread *th)
1566{
1567 /*
1568 * FIXME: This one makes no sense, we need to remove the thread from
1569 * the machine it belongs to, perf_session can have many machines, so
1570 * doing it always on ->host_machine is wrong. Fix when auditing all
1571 * the 'perf kvm' code.
1572 */
1573 machine__remove_thread(&session->host_machine, th);
1574}
1575
David Ahern9cbdb702011-04-06 21:54:20 -06001576struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
1577 unsigned int type)
1578{
1579 struct perf_evsel *pos;
1580
1581 list_for_each_entry(pos, &session->evlist->entries, node) {
1582 if (pos->attr.type == type)
1583 return pos;
1584 }
1585 return NULL;
1586}
1587
Jiri Olsa71ad0f52012-08-07 15:20:46 +02001588void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
1589 struct perf_sample *sample, struct machine *machine,
1590 int print_sym, int print_dso, int print_symoffset)
David Ahernc0230b22011-03-09 22:23:27 -07001591{
1592 struct addr_location al;
David Ahernc0230b22011-03-09 22:23:27 -07001593 struct callchain_cursor_node *node;
1594
Arnaldo Carvalho de Melo743eb862011-11-28 07:56:39 -02001595 if (perf_event__preprocess_sample(event, machine, &al, sample,
David Ahernc0230b22011-03-09 22:23:27 -07001596 NULL) < 0) {
1597 error("problem processing %d event, skipping it.\n",
1598 event->header.type);
1599 return;
1600 }
1601
1602 if (symbol_conf.use_callchain && sample->callchain) {
1603
Jiri Olsa71ad0f52012-08-07 15:20:46 +02001604
1605 if (machine__resolve_callchain(machine, evsel, al.thread,
1606 sample, NULL) != 0) {
David Ahernc0230b22011-03-09 22:23:27 -07001607 if (verbose)
1608 error("Failed to resolve callchain. Skipping\n");
1609 return;
1610 }
Namhyung Kim47260642012-05-31 14:43:26 +09001611 callchain_cursor_commit(&callchain_cursor);
David Ahernc0230b22011-03-09 22:23:27 -07001612
1613 while (1) {
Namhyung Kim47260642012-05-31 14:43:26 +09001614 node = callchain_cursor_current(&callchain_cursor);
David Ahernc0230b22011-03-09 22:23:27 -07001615 if (!node)
1616 break;
1617
David Ahern787bef12011-05-27 14:28:43 -06001618 printf("\t%16" PRIx64, node->ip);
1619 if (print_sym) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001620 printf(" ");
1621 symbol__fprintf_symname(node->sym, stdout);
David Ahern610723f2011-05-27 14:28:44 -06001622 }
1623 if (print_dso) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001624 printf(" (");
David Ahern52deff72012-05-29 22:58:26 -06001625 map__fprintf_dsoname(node->map, stdout);
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001626 printf(")");
David Ahern787bef12011-05-27 14:28:43 -06001627 }
1628 printf("\n");
David Ahernc0230b22011-03-09 22:23:27 -07001629
Namhyung Kim47260642012-05-31 14:43:26 +09001630 callchain_cursor_advance(&callchain_cursor);
David Ahernc0230b22011-03-09 22:23:27 -07001631 }
1632
1633 } else {
David Ahernadc4bf92011-05-30 09:16:27 -06001634 printf("%16" PRIx64, sample->ip);
David Ahern787bef12011-05-27 14:28:43 -06001635 if (print_sym) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001636 printf(" ");
Akihiro Nagaia978f2a2012-01-30 13:43:15 +09001637 if (print_symoffset)
1638 symbol__fprintf_symname_offs(al.sym, &al,
1639 stdout);
1640 else
1641 symbol__fprintf_symname(al.sym, stdout);
David Ahern610723f2011-05-27 14:28:44 -06001642 }
1643
1644 if (print_dso) {
Akihiro Nagai547a92e2012-01-30 13:42:57 +09001645 printf(" (");
1646 map__fprintf_dsoname(al.map, stdout);
1647 printf(")");
David Ahern787bef12011-05-27 14:28:43 -06001648 }
David Ahernc0230b22011-03-09 22:23:27 -07001649 }
1650}
Anton Blanchard5d67be92011-07-04 21:57:50 +10001651
1652int perf_session__cpu_bitmap(struct perf_session *session,
1653 const char *cpu_list, unsigned long *cpu_bitmap)
1654{
1655 int i;
1656 struct cpu_map *map;
1657
1658 for (i = 0; i < PERF_TYPE_MAX; ++i) {
1659 struct perf_evsel *evsel;
1660
1661 evsel = perf_session__find_first_evtype(session, i);
1662 if (!evsel)
1663 continue;
1664
1665 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
1666 pr_err("File does not contain CPU events. "
1667 "Remove -c option to proceed.\n");
1668 return -1;
1669 }
1670 }
1671
1672 map = cpu_map__new(cpu_list);
David Ahern47fbe532011-11-13 10:45:27 -07001673 if (map == NULL) {
1674 pr_err("Invalid cpu_list\n");
1675 return -1;
1676 }
Anton Blanchard5d67be92011-07-04 21:57:50 +10001677
1678 for (i = 0; i < map->nr; i++) {
1679 int cpu = map->map[i];
1680
1681 if (cpu >= MAX_NR_CPUS) {
1682 pr_err("Requested CPU %d too large. "
1683 "Consider raising MAX_NR_CPUS\n", cpu);
1684 return -1;
1685 }
1686
1687 set_bit(cpu, cpu_bitmap);
1688 }
1689
1690 return 0;
1691}
Stephane Eranianfbe96f22011-09-30 15:40:40 +02001692
1693void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
1694 bool full)
1695{
1696 struct stat st;
1697 int ret;
1698
1699 if (session == NULL || fp == NULL)
1700 return;
1701
1702 ret = fstat(session->fd, &st);
1703 if (ret == -1)
1704 return;
1705
1706 fprintf(fp, "# ========\n");
1707 fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
1708 perf_header__fprintf_info(session, fp, full);
1709 fprintf(fp, "# ========\n#\n");
1710}
Arnaldo Carvalho de Meloda378962012-06-27 13:08:42 -03001711
1712
1713int __perf_session__set_tracepoints_handlers(struct perf_session *session,
1714 const struct perf_evsel_str_handler *assocs,
1715 size_t nr_assocs)
1716{
1717 struct perf_evlist *evlist = session->evlist;
1718 struct event_format *format;
1719 struct perf_evsel *evsel;
1720 char *tracepoint, *name;
1721 size_t i;
1722 int err;
1723
1724 for (i = 0; i < nr_assocs; i++) {
1725 err = -ENOMEM;
1726 tracepoint = strdup(assocs[i].name);
1727 if (tracepoint == NULL)
1728 goto out;
1729
1730 err = -ENOENT;
1731 name = strchr(tracepoint, ':');
1732 if (name == NULL)
1733 goto out_free;
1734
1735 *name++ = '\0';
1736 format = pevent_find_event_by_name(session->pevent,
1737 tracepoint, name);
1738 if (format == NULL) {
1739 /*
1740 * Adding a handler for an event not in the session,
1741 * just ignore it.
1742 */
1743 goto next;
1744 }
1745
1746 evsel = perf_evlist__find_tracepoint_by_id(evlist, format->id);
1747 if (evsel == NULL)
1748 goto next;
1749
1750 err = -EEXIST;
1751 if (evsel->handler.func != NULL)
1752 goto out_free;
1753 evsel->handler.func = assocs[i].handler;
1754next:
1755 free(tracepoint);
1756 }
1757
1758 err = 0;
1759out:
1760 return err;
1761
1762out_free:
1763 free(tracepoint);
1764 goto out;
1765}