1 // SPDX-License-Identifier: GPL-2.0
2 #include <inttypes.h>
3 #include <sys/types.h>
4 #include <sys/stat.h>
5 #include <unistd.h>
6 #include "builtin.h"
7
8 #include <subcmd/parse-options.h>
9 #include "util/auxtrace.h"
10 #include "util/trace-event.h"
11 #include "util/tool.h"
12 #include "util/session.h"
13 #include "util/data.h"
14 #include "util/map_symbol.h"
15 #include "util/mem-events.h"
16 #include "util/debug.h"
17 #include "util/dso.h"
18 #include "util/map.h"
19 #include "util/symbol.h"
20 #include "util/pmus.h"
21 #include "util/sample.h"
22 #include "util/string2.h"
23 #include "util/util.h"
24 #include <linux/err.h>
25
26 #define MEM_OPERATION_LOAD 0x1
27 #define MEM_OPERATION_STORE 0x2
28
29 struct perf_mem {
30 struct perf_tool tool;
31 char const *input_name;
32 bool hide_unresolved;
33 bool dump_raw;
34 bool force;
35 bool phys_addr;
36 bool data_page_size;
37 int operation;
38 const char *cpu_list;
39 DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
40 };
41
parse_record_events(const struct option * opt,const char * str,int unset __maybe_unused)42 static int parse_record_events(const struct option *opt,
43 const char *str, int unset __maybe_unused)
44 {
45 struct perf_mem *mem = *(struct perf_mem **)opt->value;
46
47 if (!strcmp(str, "list")) {
48 perf_mem_events__list();
49 exit(0);
50 }
51 if (perf_mem_events__parse(str))
52 exit(-1);
53
54 mem->operation = 0;
55 return 0;
56 }
57
58 static const char * const __usage[] = {
59 "perf mem record [<options>] [<command>]",
60 "perf mem record [<options>] -- <command> [<options>]",
61 NULL
62 };
63
64 static const char * const *record_mem_usage = __usage;
65
__cmd_record(int argc,const char ** argv,struct perf_mem * mem)66 static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
67 {
68 int rec_argc, i = 0, j, tmp_nr = 0;
69 int start, end;
70 const char **rec_argv;
71 char **rec_tmp;
72 int ret;
73 bool all_user = false, all_kernel = false;
74 struct perf_mem_event *e;
75 struct option options[] = {
76 OPT_CALLBACK('e', "event", &mem, "event",
77 "event selector. use 'perf mem record -e list' to list available events",
78 parse_record_events),
79 OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"),
80 OPT_INCR('v', "verbose", &verbose,
81 "be more verbose (show counter open errors, etc)"),
82 OPT_BOOLEAN('U', "all-user", &all_user, "collect only user level data"),
83 OPT_BOOLEAN('K', "all-kernel", &all_kernel, "collect only kernel level data"),
84 OPT_END()
85 };
86
87 if (perf_mem_events__init()) {
88 pr_err("failed: memory events not supported\n");
89 return -1;
90 }
91
92 argc = parse_options(argc, argv, options, record_mem_usage,
93 PARSE_OPT_KEEP_UNKNOWN);
94
95 /* Max number of arguments multiplied by number of PMUs that can support them. */
96 rec_argc = argc + 9 * perf_pmus__num_mem_pmus();
97
98 if (mem->cpu_list)
99 rec_argc += 2;
100
101 rec_argv = calloc(rec_argc + 1, sizeof(char *));
102 if (!rec_argv)
103 return -1;
104
105 /*
106 * Save the allocated event name strings.
107 */
108 rec_tmp = calloc(rec_argc + 1, sizeof(char *));
109 if (!rec_tmp) {
110 free(rec_argv);
111 return -1;
112 }
113
114 rec_argv[i++] = "record";
115
116 e = perf_mem_events__ptr(PERF_MEM_EVENTS__LOAD_STORE);
117
118 /*
119 * The load and store operations are required, use the event
120 * PERF_MEM_EVENTS__LOAD_STORE if it is supported.
121 */
122 if (e->tag &&
123 (mem->operation & MEM_OPERATION_LOAD) &&
124 (mem->operation & MEM_OPERATION_STORE)) {
125 e->record = true;
126 rec_argv[i++] = "-W";
127 } else {
128 if (mem->operation & MEM_OPERATION_LOAD) {
129 e = perf_mem_events__ptr(PERF_MEM_EVENTS__LOAD);
130 e->record = true;
131 }
132
133 if (mem->operation & MEM_OPERATION_STORE) {
134 e = perf_mem_events__ptr(PERF_MEM_EVENTS__STORE);
135 e->record = true;
136 }
137 }
138
139 e = perf_mem_events__ptr(PERF_MEM_EVENTS__LOAD);
140 if (e->record)
141 rec_argv[i++] = "-W";
142
143 rec_argv[i++] = "-d";
144
145 if (mem->phys_addr)
146 rec_argv[i++] = "--phys-data";
147
148 if (mem->data_page_size)
149 rec_argv[i++] = "--data-page-size";
150
151 start = i;
152 ret = perf_mem_events__record_args(rec_argv, &i, rec_tmp, &tmp_nr);
153 if (ret)
154 goto out;
155 end = i;
156
157 if (all_user)
158 rec_argv[i++] = "--all-user";
159
160 if (all_kernel)
161 rec_argv[i++] = "--all-kernel";
162
163 if (mem->cpu_list) {
164 rec_argv[i++] = "-C";
165 rec_argv[i++] = mem->cpu_list;
166 }
167
168 for (j = 0; j < argc; j++, i++)
169 rec_argv[i] = argv[j];
170
171 if (verbose > 0) {
172 pr_debug("calling: record ");
173
174 for (j = start; j < end; j++)
175 pr_debug("%s ", rec_argv[j]);
176
177 pr_debug("\n");
178 }
179
180 ret = cmd_record(i, rec_argv);
181 out:
182 for (i = 0; i < tmp_nr; i++)
183 free(rec_tmp[i]);
184
185 free(rec_tmp);
186 free(rec_argv);
187 return ret;
188 }
189
190 static int
dump_raw_samples(struct perf_tool * tool,union perf_event * event,struct perf_sample * sample,struct machine * machine)191 dump_raw_samples(struct perf_tool *tool,
192 union perf_event *event,
193 struct perf_sample *sample,
194 struct machine *machine)
195 {
196 struct perf_mem *mem = container_of(tool, struct perf_mem, tool);
197 struct addr_location al;
198 const char *fmt, *field_sep;
199 char str[PAGE_SIZE_NAME_LEN];
200 struct dso *dso = NULL;
201
202 addr_location__init(&al);
203 if (machine__resolve(machine, &al, sample) < 0) {
204 fprintf(stderr, "problem processing %d event, skipping it.\n",
205 event->header.type);
206 addr_location__exit(&al);
207 return -1;
208 }
209
210 if (al.filtered || (mem->hide_unresolved && al.sym == NULL))
211 goto out_put;
212
213 if (al.map != NULL) {
214 dso = map__dso(al.map);
215 if (dso)
216 dso->hit = 1;
217 }
218
219 field_sep = symbol_conf.field_sep;
220 if (field_sep) {
221 fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s";
222 } else {
223 fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64"%s";
224 symbol_conf.field_sep = " ";
225 }
226 printf(fmt,
227 sample->pid,
228 symbol_conf.field_sep,
229 sample->tid,
230 symbol_conf.field_sep,
231 sample->ip,
232 symbol_conf.field_sep,
233 sample->addr,
234 symbol_conf.field_sep);
235
236 if (mem->phys_addr) {
237 printf("0x%016"PRIx64"%s",
238 sample->phys_addr,
239 symbol_conf.field_sep);
240 }
241
242 if (mem->data_page_size) {
243 printf("%s%s",
244 get_page_size_name(sample->data_page_size, str),
245 symbol_conf.field_sep);
246 }
247
248 if (field_sep)
249 fmt = "%"PRIu64"%s0x%"PRIx64"%s%s:%s\n";
250 else
251 fmt = "%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n";
252
253 printf(fmt,
254 sample->weight,
255 symbol_conf.field_sep,
256 sample->data_src,
257 symbol_conf.field_sep,
258 dso ? dso->long_name : "???",
259 al.sym ? al.sym->name : "???");
260 out_put:
261 addr_location__exit(&al);
262 return 0;
263 }
264
process_sample_event(struct perf_tool * tool,union perf_event * event,struct perf_sample * sample,struct evsel * evsel __maybe_unused,struct machine * machine)265 static int process_sample_event(struct perf_tool *tool,
266 union perf_event *event,
267 struct perf_sample *sample,
268 struct evsel *evsel __maybe_unused,
269 struct machine *machine)
270 {
271 return dump_raw_samples(tool, event, sample, machine);
272 }
273
report_raw_events(struct perf_mem * mem)274 static int report_raw_events(struct perf_mem *mem)
275 {
276 struct itrace_synth_opts itrace_synth_opts = {
277 .set = true,
278 .mem = true, /* Only enable memory event */
279 .default_no_sample = true,
280 };
281
282 struct perf_data data = {
283 .path = input_name,
284 .mode = PERF_DATA_MODE_READ,
285 .force = mem->force,
286 };
287 int ret;
288 struct perf_session *session = perf_session__new(&data, &mem->tool);
289
290 if (IS_ERR(session))
291 return PTR_ERR(session);
292
293 session->itrace_synth_opts = &itrace_synth_opts;
294
295 if (mem->cpu_list) {
296 ret = perf_session__cpu_bitmap(session, mem->cpu_list,
297 mem->cpu_bitmap);
298 if (ret < 0)
299 goto out_delete;
300 }
301
302 ret = symbol__init(&session->header.env);
303 if (ret < 0)
304 goto out_delete;
305
306 printf("# PID, TID, IP, ADDR, ");
307
308 if (mem->phys_addr)
309 printf("PHYS ADDR, ");
310
311 if (mem->data_page_size)
312 printf("DATA PAGE SIZE, ");
313
314 printf("LOCAL WEIGHT, DSRC, SYMBOL\n");
315
316 ret = perf_session__process_events(session);
317
318 out_delete:
319 perf_session__delete(session);
320 return ret;
321 }
get_sort_order(struct perf_mem * mem)322 static char *get_sort_order(struct perf_mem *mem)
323 {
324 bool has_extra_options = (mem->phys_addr | mem->data_page_size) ? true : false;
325 char sort[128];
326
327 /*
328 * there is no weight (cost) associated with stores, so don't print
329 * the column
330 */
331 if (!(mem->operation & MEM_OPERATION_LOAD)) {
332 strcpy(sort, "--sort=mem,sym,dso,symbol_daddr,"
333 "dso_daddr,tlb,locked");
334 } else if (has_extra_options) {
335 strcpy(sort, "--sort=local_weight,mem,sym,dso,symbol_daddr,"
336 "dso_daddr,snoop,tlb,locked,blocked");
337 } else
338 return NULL;
339
340 if (mem->phys_addr)
341 strcat(sort, ",phys_daddr");
342
343 if (mem->data_page_size)
344 strcat(sort, ",data_page_size");
345
346 return strdup(sort);
347 }
348
report_events(int argc,const char ** argv,struct perf_mem * mem)349 static int report_events(int argc, const char **argv, struct perf_mem *mem)
350 {
351 const char **rep_argv;
352 int ret, i = 0, j, rep_argc;
353 char *new_sort_order;
354
355 if (mem->dump_raw)
356 return report_raw_events(mem);
357
358 rep_argc = argc + 3;
359 rep_argv = calloc(rep_argc + 1, sizeof(char *));
360 if (!rep_argv)
361 return -1;
362
363 rep_argv[i++] = "report";
364 rep_argv[i++] = "--mem-mode";
365 rep_argv[i++] = "-n"; /* display number of samples */
366
367 new_sort_order = get_sort_order(mem);
368 if (new_sort_order)
369 rep_argv[i++] = new_sort_order;
370
371 for (j = 1; j < argc; j++, i++)
372 rep_argv[i] = argv[j];
373
374 ret = cmd_report(i, rep_argv);
375 free(new_sort_order);
376 free(rep_argv);
377 return ret;
378 }
379
380 struct mem_mode {
381 const char *name;
382 int mode;
383 };
384
385 #define MEM_OPT(n, m) \
386 { .name = n, .mode = (m) }
387
388 #define MEM_END { .name = NULL }
389
390 static const struct mem_mode mem_modes[]={
391 MEM_OPT("load", MEM_OPERATION_LOAD),
392 MEM_OPT("store", MEM_OPERATION_STORE),
393 MEM_END
394 };
395
396 static int
parse_mem_ops(const struct option * opt,const char * str,int unset)397 parse_mem_ops(const struct option *opt, const char *str, int unset)
398 {
399 int *mode = (int *)opt->value;
400 const struct mem_mode *m;
401 char *s, *os = NULL, *p;
402 int ret = -1;
403
404 if (unset)
405 return 0;
406
407 /* str may be NULL in case no arg is passed to -t */
408 if (str) {
409 /* because str is read-only */
410 s = os = strdup(str);
411 if (!s)
412 return -1;
413
414 /* reset mode */
415 *mode = 0;
416
417 for (;;) {
418 p = strchr(s, ',');
419 if (p)
420 *p = '\0';
421
422 for (m = mem_modes; m->name; m++) {
423 if (!strcasecmp(s, m->name))
424 break;
425 }
426 if (!m->name) {
427 fprintf(stderr, "unknown sampling op %s,"
428 " check man page\n", s);
429 goto error;
430 }
431
432 *mode |= m->mode;
433
434 if (!p)
435 break;
436
437 s = p + 1;
438 }
439 }
440 ret = 0;
441
442 if (*mode == 0)
443 *mode = MEM_OPERATION_LOAD;
444 error:
445 free(os);
446 return ret;
447 }
448
cmd_mem(int argc,const char ** argv)449 int cmd_mem(int argc, const char **argv)
450 {
451 struct stat st;
452 struct perf_mem mem = {
453 .tool = {
454 .sample = process_sample_event,
455 .mmap = perf_event__process_mmap,
456 .mmap2 = perf_event__process_mmap2,
457 .comm = perf_event__process_comm,
458 .lost = perf_event__process_lost,
459 .fork = perf_event__process_fork,
460 .attr = perf_event__process_attr,
461 .build_id = perf_event__process_build_id,
462 .namespaces = perf_event__process_namespaces,
463 .auxtrace_info = perf_event__process_auxtrace_info,
464 .auxtrace = perf_event__process_auxtrace,
465 .auxtrace_error = perf_event__process_auxtrace_error,
466 .ordered_events = true,
467 },
468 .input_name = "perf.data",
469 /*
470 * default to both load an store sampling
471 */
472 .operation = MEM_OPERATION_LOAD | MEM_OPERATION_STORE,
473 };
474 const struct option mem_options[] = {
475 OPT_CALLBACK('t', "type", &mem.operation,
476 "type", "memory operations(load,store) Default load,store",
477 parse_mem_ops),
478 OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw,
479 "dump raw samples in ASCII"),
480 OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved,
481 "Only display entries resolved to a symbol"),
482 OPT_STRING('i', "input", &input_name, "file",
483 "input file name"),
484 OPT_STRING('C', "cpu", &mem.cpu_list, "cpu",
485 "list of cpus to profile"),
486 OPT_STRING_NOEMPTY('x', "field-separator", &symbol_conf.field_sep,
487 "separator",
488 "separator for columns, no spaces will be added"
489 " between columns '.' is reserved."),
490 OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"),
491 OPT_BOOLEAN('p', "phys-data", &mem.phys_addr, "Record/Report sample physical addresses"),
492 OPT_BOOLEAN(0, "data-page-size", &mem.data_page_size, "Record/Report sample data address page size"),
493 OPT_END()
494 };
495 const char *const mem_subcommands[] = { "record", "report", NULL };
496 const char *mem_usage[] = {
497 NULL,
498 NULL
499 };
500
501 argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands,
502 mem_usage, PARSE_OPT_KEEP_UNKNOWN);
503
504 if (!argc || !(strncmp(argv[0], "rec", 3) || mem.operation))
505 usage_with_options(mem_usage, mem_options);
506
507 if (!mem.input_name || !strlen(mem.input_name)) {
508 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
509 mem.input_name = "-";
510 else
511 mem.input_name = "perf.data";
512 }
513
514 if (strlen(argv[0]) > 2 && strstarts("record", argv[0]))
515 return __cmd_record(argc, argv, &mem);
516 else if (strlen(argv[0]) > 2 && strstarts("report", argv[0]))
517 return report_events(argc, argv, &mem);
518 else
519 usage_with_options(mem_usage, mem_options);
520
521 /* free usage string allocated by parse_options_subcommand */
522 free((void *)mem_usage[0]);
523
524 return 0;
525 }
526