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1#include "builtin.h"
2#include "perf.h"
3
4#include "util/parse-options.h"
5#include "util/trace-event.h"
6#include "util/tool.h"
7#include "util/session.h"
8#include "util/data.h"
9
10#define MEM_OPERATION_LOAD "load"
11#define MEM_OPERATION_STORE "store"
12
13static const char *mem_operation = MEM_OPERATION_LOAD;
14
15struct perf_mem {
16 struct perf_tool tool;
17 char const *input_name;
18 bool hide_unresolved;
19 bool dump_raw;
20 const char *cpu_list;
21 DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
22};
23
24static const char * const mem_usage[] = {
25 "perf mem [<options>] {record <command> |report}",
26 NULL
27};
28
29static int __cmd_record(int argc, const char **argv)
30{
31 int rec_argc, i = 0, j;
32 const char **rec_argv;
33 char event[64];
34 int ret;
35
36 rec_argc = argc + 4;
37 rec_argv = calloc(rec_argc + 1, sizeof(char *));
38 if (!rec_argv)
39 return -1;
40
41 rec_argv[i++] = strdup("record");
42 if (!strcmp(mem_operation, MEM_OPERATION_LOAD))
43 rec_argv[i++] = strdup("-W");
44 rec_argv[i++] = strdup("-d");
45 rec_argv[i++] = strdup("-e");
46
47 if (strcmp(mem_operation, MEM_OPERATION_LOAD))
48 sprintf(event, "cpu/mem-stores/pp");
49 else
50 sprintf(event, "cpu/mem-loads/pp");
51
52 rec_argv[i++] = strdup(event);
53 for (j = 1; j < argc; j++, i++)
54 rec_argv[i] = argv[j];
55
56 ret = cmd_record(i, rec_argv, NULL);
57 free(rec_argv);
58 return ret;
59}
60
61static int
62dump_raw_samples(struct perf_tool *tool,
63 union perf_event *event,
64 struct perf_sample *sample,
65 struct machine *machine)
66{
67 struct perf_mem *mem = container_of(tool, struct perf_mem, tool);
68 struct addr_location al;
69 const char *fmt;
70
71 if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
72 fprintf(stderr, "problem processing %d event, skipping it.\n",
73 event->header.type);
74 return -1;
75 }
76
77 if (al.filtered || (mem->hide_unresolved && al.sym == NULL))
78 return 0;
79
80 if (al.map != NULL)
81 al.map->dso->hit = 1;
82
83 if (symbol_conf.field_sep) {
84 fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s%"PRIu64
85 "%s0x%"PRIx64"%s%s:%s\n";
86 } else {
87 fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64
88 "%s%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n";
89 symbol_conf.field_sep = " ";
90 }
91
92 printf(fmt,
93 sample->pid,
94 symbol_conf.field_sep,
95 sample->tid,
96 symbol_conf.field_sep,
97 sample->ip,
98 symbol_conf.field_sep,
99 sample->addr,
100 symbol_conf.field_sep,
101 sample->weight,
102 symbol_conf.field_sep,
103 sample->data_src,
104 symbol_conf.field_sep,
105 al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???",
106 al.sym ? al.sym->name : "???");
107
108 return 0;
109}
110
111static int process_sample_event(struct perf_tool *tool,
112 union perf_event *event,
113 struct perf_sample *sample,
114 struct perf_evsel *evsel __maybe_unused,
115 struct machine *machine)
116{
117 return dump_raw_samples(tool, event, sample, machine);
118}
119
120static int report_raw_events(struct perf_mem *mem)
121{
122 struct perf_data_file file = {
123 .path = input_name,
124 .mode = PERF_DATA_MODE_READ,
125 };
126 int err = -EINVAL;
127 int ret;
128 struct perf_session *session = perf_session__new(&file, false,
129 &mem->tool);
130
131 if (session == NULL)
132 return -ENOMEM;
133
134 if (mem->cpu_list) {
135 ret = perf_session__cpu_bitmap(session, mem->cpu_list,
136 mem->cpu_bitmap);
137 if (ret)
138 goto out_delete;
139 }
140
141 if (symbol__init() < 0)
142 return -1;
143
144 printf("# PID, TID, IP, ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n");
145
146 err = perf_session__process_events(session, &mem->tool);
147 if (err)
148 return err;
149
150 return 0;
151
152out_delete:
153 perf_session__delete(session);
154 return err;
155}
156
157static int report_events(int argc, const char **argv, struct perf_mem *mem)
158{
159 const char **rep_argv;
160 int ret, i = 0, j, rep_argc;
161
162 if (mem->dump_raw)
163 return report_raw_events(mem);
164
165 rep_argc = argc + 3;
166 rep_argv = calloc(rep_argc + 1, sizeof(char *));
167 if (!rep_argv)
168 return -1;
169
170 rep_argv[i++] = strdup("report");
171 rep_argv[i++] = strdup("--mem-mode");
172 rep_argv[i++] = strdup("-n"); /* display number of samples */
173
174 /*
175 * there is no weight (cost) associated with stores, so don't print
176 * the column
177 */
178 if (strcmp(mem_operation, MEM_OPERATION_LOAD))
179 rep_argv[i++] = strdup("--sort=mem,sym,dso,symbol_daddr,"
180 "dso_daddr,tlb,locked");
181
182 for (j = 1; j < argc; j++, i++)
183 rep_argv[i] = argv[j];
184
185 ret = cmd_report(i, rep_argv, NULL);
186 free(rep_argv);
187 return ret;
188}
189
190int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused)
191{
192 struct stat st;
193 struct perf_mem mem = {
194 .tool = {
195 .sample = process_sample_event,
196 .mmap = perf_event__process_mmap,
197 .mmap2 = perf_event__process_mmap2,
198 .comm = perf_event__process_comm,
199 .lost = perf_event__process_lost,
200 .fork = perf_event__process_fork,
201 .build_id = perf_event__process_build_id,
202 .ordered_samples = true,
203 },
204 .input_name = "perf.data",
205 };
206 const struct option mem_options[] = {
207 OPT_STRING('t', "type", &mem_operation,
208 "type", "memory operations(load/store)"),
209 OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw,
210 "dump raw samples in ASCII"),
211 OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved,
212 "Only display entries resolved to a symbol"),
213 OPT_STRING('i', "input", &input_name, "file",
214 "input file name"),
215 OPT_STRING('C', "cpu", &mem.cpu_list, "cpu",
216 "list of cpus to profile"),
217 OPT_STRING('x', "field-separator", &symbol_conf.field_sep,
218 "separator",
219 "separator for columns, no spaces will be added"
220 " between columns '.' is reserved."),
221 OPT_END()
222 };
223
224 argc = parse_options(argc, argv, mem_options, mem_usage,
225 PARSE_OPT_STOP_AT_NON_OPTION);
226
227 if (!argc || !(strncmp(argv[0], "rec", 3) || mem_operation))
228 usage_with_options(mem_usage, mem_options);
229
230 if (!mem.input_name || !strlen(mem.input_name)) {
231 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
232 mem.input_name = "-";
233 else
234 mem.input_name = "perf.data";
235 }
236
237 if (!strncmp(argv[0], "rec", 3))
238 return __cmd_record(argc, argv);
239 else if (!strncmp(argv[0], "rep", 3))
240 return report_events(argc, argv, &mem);
241 else
242 usage_with_options(mem_usage, mem_options);
243
244 return 0;
245}
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/sort.h"
23#include "util/string2.h"
24#include "util/util.h"
25#include <linux/err.h>
26
27#define MEM_OPERATION_LOAD 0x1
28#define MEM_OPERATION_STORE 0x2
29
30struct perf_mem {
31 struct perf_tool tool;
32 const char *input_name;
33 const char *sort_key;
34 bool hide_unresolved;
35 bool dump_raw;
36 bool force;
37 bool phys_addr;
38 bool data_page_size;
39 bool all_kernel;
40 bool all_user;
41 bool data_type;
42 int operation;
43 const char *cpu_list;
44 DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
45};
46
47static int parse_record_events(const struct option *opt,
48 const char *str, int unset __maybe_unused)
49{
50 struct perf_mem *mem = (struct perf_mem *)opt->value;
51 struct perf_pmu *pmu;
52
53 pmu = perf_mem_events_find_pmu();
54 if (!pmu) {
55 pr_err("failed: there is no PMU that supports perf mem\n");
56 exit(-1);
57 }
58
59 if (!strcmp(str, "list")) {
60 perf_pmu__mem_events_list(pmu);
61 exit(0);
62 }
63 if (perf_pmu__mem_events_parse(pmu, str))
64 exit(-1);
65
66 mem->operation = 0;
67 return 0;
68}
69
70static int __cmd_record(int argc, const char **argv, struct perf_mem *mem,
71 const struct option *options)
72{
73 int rec_argc, i = 0, j;
74 int start, end;
75 const char **rec_argv;
76 int ret;
77 struct perf_mem_event *e;
78 struct perf_pmu *pmu;
79 const char * const record_usage[] = {
80 "perf mem record [<options>] [<command>]",
81 "perf mem record [<options>] -- <command> [<options>]",
82 NULL
83 };
84
85 pmu = perf_mem_events_find_pmu();
86 if (!pmu) {
87 pr_err("failed: no PMU supports the memory events\n");
88 return -1;
89 }
90
91 if (perf_pmu__mem_events_init()) {
92 pr_err("failed: memory events not supported\n");
93 return -1;
94 }
95
96 argc = parse_options(argc, argv, options, record_usage,
97 PARSE_OPT_KEEP_UNKNOWN);
98
99 /* Max number of arguments multiplied by number of PMUs that can support them. */
100 rec_argc = argc + 9 * (perf_pmu__mem_events_num_mem_pmus(pmu) + 1);
101
102 if (mem->cpu_list)
103 rec_argc += 2;
104
105 rec_argv = calloc(rec_argc + 1, sizeof(char *));
106 if (!rec_argv)
107 return -1;
108
109 rec_argv[i++] = "record";
110
111 e = perf_pmu__mem_events_ptr(pmu, PERF_MEM_EVENTS__LOAD_STORE);
112
113 /*
114 * The load and store operations are required, use the event
115 * PERF_MEM_EVENTS__LOAD_STORE if it is supported.
116 */
117 if (e->tag &&
118 (mem->operation & MEM_OPERATION_LOAD) &&
119 (mem->operation & MEM_OPERATION_STORE)) {
120 perf_mem_record[PERF_MEM_EVENTS__LOAD_STORE] = true;
121 rec_argv[i++] = "-W";
122 } else {
123 if (mem->operation & MEM_OPERATION_LOAD)
124 perf_mem_record[PERF_MEM_EVENTS__LOAD] = true;
125
126 if (mem->operation & MEM_OPERATION_STORE)
127 perf_mem_record[PERF_MEM_EVENTS__STORE] = true;
128 }
129
130 if (perf_mem_record[PERF_MEM_EVENTS__LOAD])
131 rec_argv[i++] = "-W";
132
133 rec_argv[i++] = "-d";
134
135 if (mem->phys_addr)
136 rec_argv[i++] = "--phys-data";
137
138 if (mem->data_page_size)
139 rec_argv[i++] = "--data-page-size";
140
141 start = i;
142 ret = perf_mem_events__record_args(rec_argv, &i);
143 if (ret)
144 goto out;
145 end = i;
146
147 if (mem->all_user)
148 rec_argv[i++] = "--all-user";
149
150 if (mem->all_kernel)
151 rec_argv[i++] = "--all-kernel";
152
153 if (mem->cpu_list) {
154 rec_argv[i++] = "-C";
155 rec_argv[i++] = mem->cpu_list;
156 }
157
158 for (j = 0; j < argc; j++, i++)
159 rec_argv[i] = argv[j];
160
161 if (verbose > 0) {
162 pr_debug("calling: record ");
163
164 for (j = start; j < end; j++)
165 pr_debug("%s ", rec_argv[j]);
166
167 pr_debug("\n");
168 }
169
170 ret = cmd_record(i, rec_argv);
171out:
172 free(rec_argv);
173 return ret;
174}
175
176static int
177dump_raw_samples(const struct perf_tool *tool,
178 union perf_event *event,
179 struct perf_sample *sample,
180 struct machine *machine)
181{
182 struct perf_mem *mem = container_of(tool, struct perf_mem, tool);
183 struct addr_location al;
184 const char *fmt, *field_sep;
185 char str[PAGE_SIZE_NAME_LEN];
186 struct dso *dso = NULL;
187
188 addr_location__init(&al);
189 if (machine__resolve(machine, &al, sample) < 0) {
190 fprintf(stderr, "problem processing %d event, skipping it.\n",
191 event->header.type);
192 addr_location__exit(&al);
193 return -1;
194 }
195
196 if (al.filtered || (mem->hide_unresolved && al.sym == NULL))
197 goto out_put;
198
199 if (al.map != NULL) {
200 dso = map__dso(al.map);
201 if (dso)
202 dso__set_hit(dso);
203 }
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 dso ? dso__long_name(dso) : "???",
245 al.sym ? al.sym->name : "???");
246out_put:
247 addr_location__exit(&al);
248 return 0;
249}
250
251static int process_sample_event(const 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
260static 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;
275
276 perf_tool__init(&mem->tool, /*ordered_events=*/true);
277 mem->tool.sample = process_sample_event;
278 mem->tool.mmap = perf_event__process_mmap;
279 mem->tool.mmap2 = perf_event__process_mmap2;
280 mem->tool.comm = perf_event__process_comm;
281 mem->tool.lost = perf_event__process_lost;
282 mem->tool.fork = perf_event__process_fork;
283 mem->tool.attr = perf_event__process_attr;
284 mem->tool.build_id = perf_event__process_build_id;
285 mem->tool.namespaces = perf_event__process_namespaces;
286 mem->tool.auxtrace_info = perf_event__process_auxtrace_info;
287 mem->tool.auxtrace = perf_event__process_auxtrace;
288 mem->tool.auxtrace_error = perf_event__process_auxtrace_error;
289
290 session = perf_session__new(&data, &mem->tool);
291
292 if (IS_ERR(session))
293 return PTR_ERR(session);
294
295 session->itrace_synth_opts = &itrace_synth_opts;
296
297 if (mem->cpu_list) {
298 ret = perf_session__cpu_bitmap(session, mem->cpu_list,
299 mem->cpu_bitmap);
300 if (ret < 0)
301 goto out_delete;
302 }
303
304 ret = symbol__init(&session->header.env);
305 if (ret < 0)
306 goto out_delete;
307
308 printf("# PID, TID, IP, ADDR, ");
309
310 if (mem->phys_addr)
311 printf("PHYS ADDR, ");
312
313 if (mem->data_page_size)
314 printf("DATA PAGE SIZE, ");
315
316 printf("LOCAL WEIGHT, DSRC, SYMBOL\n");
317
318 ret = perf_session__process_events(session);
319
320out_delete:
321 perf_session__delete(session);
322 return ret;
323}
324
325static char *get_sort_order(struct perf_mem *mem)
326{
327 bool has_extra_options = (mem->phys_addr | mem->data_page_size) ? true : false;
328 char sort[128];
329
330 if (mem->sort_key)
331 scnprintf(sort, sizeof(sort), "--sort=%s", mem->sort_key);
332 else if (mem->data_type)
333 strcpy(sort, "--sort=mem,snoop,tlb,type");
334 /*
335 * there is no weight (cost) associated with stores, so don't print
336 * the column
337 */
338 else if (!(mem->operation & MEM_OPERATION_LOAD)) {
339 strcpy(sort, "--sort=mem,sym,dso,symbol_daddr,"
340 "dso_daddr,tlb,locked");
341 } else if (has_extra_options) {
342 strcpy(sort, "--sort=local_weight,mem,sym,dso,symbol_daddr,"
343 "dso_daddr,snoop,tlb,locked,blocked");
344 } else
345 return NULL;
346
347 if (mem->phys_addr)
348 strcat(sort, ",phys_daddr");
349
350 if (mem->data_page_size)
351 strcat(sort, ",data_page_size");
352
353 /* make sure it has 'type' sort key even -s option is used */
354 if (mem->data_type && !strstr(sort, "type"))
355 strcat(sort, ",type");
356
357 return strdup(sort);
358}
359
360static int __cmd_report(int argc, const char **argv, struct perf_mem *mem,
361 const struct option *options)
362{
363 const char **rep_argv;
364 int ret, i = 0, j, rep_argc;
365 char *new_sort_order;
366 const char * const report_usage[] = {
367 "perf mem report [<options>]",
368 NULL
369 };
370
371 argc = parse_options(argc, argv, options, report_usage,
372 PARSE_OPT_KEEP_UNKNOWN);
373
374 if (mem->dump_raw)
375 return report_raw_events(mem);
376
377 rep_argc = argc + 3;
378 rep_argv = calloc(rep_argc + 1, sizeof(char *));
379 if (!rep_argv)
380 return -1;
381
382 rep_argv[i++] = "report";
383 rep_argv[i++] = "--mem-mode";
384 rep_argv[i++] = "-n"; /* display number of samples */
385
386 new_sort_order = get_sort_order(mem);
387 if (new_sort_order)
388 rep_argv[i++] = new_sort_order;
389
390 for (j = 0; j < argc; j++, i++)
391 rep_argv[i] = argv[j];
392
393 ret = cmd_report(i, rep_argv);
394 free(new_sort_order);
395 free(rep_argv);
396 return ret;
397}
398
399struct mem_mode {
400 const char *name;
401 int mode;
402};
403
404#define MEM_OPT(n, m) \
405 { .name = n, .mode = (m) }
406
407#define MEM_END { .name = NULL }
408
409static const struct mem_mode mem_modes[]={
410 MEM_OPT("load", MEM_OPERATION_LOAD),
411 MEM_OPT("store", MEM_OPERATION_STORE),
412 MEM_END
413};
414
415static int
416parse_mem_ops(const struct option *opt, const char *str, int unset)
417{
418 int *mode = (int *)opt->value;
419 const struct mem_mode *m;
420 char *s, *os = NULL, *p;
421 int ret = -1;
422
423 if (unset)
424 return 0;
425
426 /* str may be NULL in case no arg is passed to -t */
427 if (str) {
428 /* because str is read-only */
429 s = os = strdup(str);
430 if (!s)
431 return -1;
432
433 /* reset mode */
434 *mode = 0;
435
436 for (;;) {
437 p = strchr(s, ',');
438 if (p)
439 *p = '\0';
440
441 for (m = mem_modes; m->name; m++) {
442 if (!strcasecmp(s, m->name))
443 break;
444 }
445 if (!m->name) {
446 fprintf(stderr, "unknown sampling op %s,"
447 " check man page\n", s);
448 goto error;
449 }
450
451 *mode |= m->mode;
452
453 if (!p)
454 break;
455
456 s = p + 1;
457 }
458 }
459 ret = 0;
460
461 if (*mode == 0)
462 *mode = MEM_OPERATION_LOAD;
463error:
464 free(os);
465 return ret;
466}
467
468int cmd_mem(int argc, const char **argv)
469{
470 struct stat st;
471 struct perf_mem mem = {
472 .input_name = "perf.data",
473 /*
474 * default to both load an store sampling
475 */
476 .operation = MEM_OPERATION_LOAD | MEM_OPERATION_STORE,
477 };
478 char *sort_order_help = sort_help("sort by key(s):", SORT_MODE__MEMORY);
479 const struct option mem_options[] = {
480 OPT_CALLBACK('t', "type", &mem.operation,
481 "type", "memory operations(load,store) Default load,store",
482 parse_mem_ops),
483 OPT_STRING('C', "cpu", &mem.cpu_list, "cpu",
484 "list of cpus to profile"),
485 OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"),
486 OPT_INCR('v', "verbose", &verbose,
487 "be more verbose (show counter open errors, etc)"),
488 OPT_BOOLEAN('p', "phys-data", &mem.phys_addr, "Record/Report sample physical addresses"),
489 OPT_BOOLEAN(0, "data-page-size", &mem.data_page_size, "Record/Report sample data address page size"),
490 OPT_END()
491 };
492 const struct option record_options[] = {
493 OPT_CALLBACK('e', "event", &mem, "event",
494 "event selector. use 'perf mem record -e list' to list available events",
495 parse_record_events),
496 OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"),
497 OPT_BOOLEAN('U', "all-user", &mem.all_user, "collect only user level data"),
498 OPT_BOOLEAN('K', "all-kernel", &mem.all_kernel, "collect only kernel level data"),
499 OPT_PARENT(mem_options)
500 };
501 const struct option report_options[] = {
502 OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw,
503 "dump raw samples in ASCII"),
504 OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved,
505 "Only display entries resolved to a symbol"),
506 OPT_STRING('i', "input", &input_name, "file",
507 "input file name"),
508 OPT_STRING_NOEMPTY('x', "field-separator", &symbol_conf.field_sep,
509 "separator",
510 "separator for columns, no spaces will be added"
511 " between columns '.' is reserved."),
512 OPT_STRING('s', "sort", &mem.sort_key, "key[,key2...]",
513 sort_order_help),
514 OPT_BOOLEAN('T', "type-profile", &mem.data_type,
515 "Show data-type profile result"),
516 OPT_PARENT(mem_options)
517 };
518 const char *const mem_subcommands[] = { "record", "report", NULL };
519 const char *mem_usage[] = {
520 NULL,
521 NULL
522 };
523
524 argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands,
525 mem_usage, PARSE_OPT_STOP_AT_NON_OPTION);
526
527 if (!argc || !(strncmp(argv[0], "rec", 3) || mem.operation))
528 usage_with_options(mem_usage, mem_options);
529
530 if (!mem.input_name || !strlen(mem.input_name)) {
531 if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
532 mem.input_name = "-";
533 else
534 mem.input_name = "perf.data";
535 }
536
537 if (strlen(argv[0]) > 2 && strstarts("record", argv[0]))
538 return __cmd_record(argc, argv, &mem, record_options);
539 else if (strlen(argv[0]) > 2 && strstarts("report", argv[0]))
540 return __cmd_report(argc, argv, &mem, report_options);
541 else
542 usage_with_options(mem_usage, mem_options);
543
544 /* free usage string allocated by parse_options_subcommand */
545 free((void *)mem_usage[0]);
546
547 return 0;
548}