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