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