summaryrefslogtreecommitdiff
path: root/tools/perf/builtin-mem.c
blob: 863fcd735daee9abe00093ed448902241603cb07 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
// SPDX-License-Identifier: GPL-2.0
#include <inttypes.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "builtin.h"

#include <subcmd/parse-options.h>
#include "util/auxtrace.h"
#include "util/trace-event.h"
#include "util/tool.h"
#include "util/session.h"
#include "util/data.h"
#include "util/map_symbol.h"
#include "util/mem-events.h"
#include "util/debug.h"
#include "util/dso.h"
#include "util/map.h"
#include "util/symbol.h"
#include "util/pmus.h"
#include "util/sample.h"
#include "util/string2.h"
#include "util/util.h"
#include <linux/err.h>

#define MEM_OPERATION_LOAD	0x1
#define MEM_OPERATION_STORE	0x2

struct perf_mem {
	struct perf_tool	tool;
	char const		*input_name;
	bool			hide_unresolved;
	bool			dump_raw;
	bool			force;
	bool			phys_addr;
	bool			data_page_size;
	int			operation;
	const char		*cpu_list;
	DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
};

static int parse_record_events(const struct option *opt,
			       const char *str, int unset __maybe_unused)
{
	struct perf_mem *mem = *(struct perf_mem **)opt->value;
	struct perf_pmu *pmu;

	pmu = perf_mem_events_find_pmu();
	if (!pmu) {
		pr_err("failed: there is no PMU that supports perf mem\n");
		exit(-1);
	}

	if (!strcmp(str, "list")) {
		perf_pmu__mem_events_list(pmu);
		exit(0);
	}
	if (perf_pmu__mem_events_parse(pmu, str))
		exit(-1);

	mem->operation = 0;
	return 0;
}

static const char * const __usage[] = {
	"perf mem record [<options>] [<command>]",
	"perf mem record [<options>] -- <command> [<options>]",
	NULL
};

static const char * const *record_mem_usage = __usage;

static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
{
	int rec_argc, i = 0, j;
	int start, end;
	const char **rec_argv;
	int ret;
	bool all_user = false, all_kernel = false;
	struct perf_mem_event *e;
	struct perf_pmu *pmu;
	struct option options[] = {
	OPT_CALLBACK('e', "event", &mem, "event",
		     "event selector. use 'perf mem record -e list' to list available events",
		     parse_record_events),
	OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"),
	OPT_INCR('v', "verbose", &verbose,
		 "be more verbose (show counter open errors, etc)"),
	OPT_BOOLEAN('U', "all-user", &all_user, "collect only user level data"),
	OPT_BOOLEAN('K', "all-kernel", &all_kernel, "collect only kernel level data"),
	OPT_END()
	};

	pmu = perf_mem_events_find_pmu();
	if (!pmu) {
		pr_err("failed: no PMU supports the memory events\n");
		return -1;
	}

	if (perf_pmu__mem_events_init(pmu)) {
		pr_err("failed: memory events not supported\n");
		return -1;
	}

	argc = parse_options(argc, argv, options, record_mem_usage,
			     PARSE_OPT_KEEP_UNKNOWN);

	/* Max number of arguments multiplied by number of PMUs that can support them. */
	rec_argc = argc + 9 * (perf_pmu__mem_events_num_mem_pmus(pmu) + 1);

	if (mem->cpu_list)
		rec_argc += 2;

	rec_argv = calloc(rec_argc + 1, sizeof(char *));
	if (!rec_argv)
		return -1;

	rec_argv[i++] = "record";

	e = perf_pmu__mem_events_ptr(pmu, PERF_MEM_EVENTS__LOAD_STORE);

	/*
	 * The load and store operations are required, use the event
	 * PERF_MEM_EVENTS__LOAD_STORE if it is supported.
	 */
	if (e->tag &&
	    (mem->operation & MEM_OPERATION_LOAD) &&
	    (mem->operation & MEM_OPERATION_STORE)) {
		e->record = true;
		rec_argv[i++] = "-W";
	} else {
		if (mem->operation & MEM_OPERATION_LOAD) {
			e = perf_pmu__mem_events_ptr(pmu, PERF_MEM_EVENTS__LOAD);
			e->record = true;
		}

		if (mem->operation & MEM_OPERATION_STORE) {
			e = perf_pmu__mem_events_ptr(pmu, PERF_MEM_EVENTS__STORE);
			e->record = true;
		}
	}

	e = perf_pmu__mem_events_ptr(pmu, PERF_MEM_EVENTS__LOAD);
	if (e->record)
		rec_argv[i++] = "-W";

	rec_argv[i++] = "-d";

	if (mem->phys_addr)
		rec_argv[i++] = "--phys-data";

	if (mem->data_page_size)
		rec_argv[i++] = "--data-page-size";

	start = i;
	ret = perf_mem_events__record_args(rec_argv, &i);
	if (ret)
		goto out;
	end = i;

	if (all_user)
		rec_argv[i++] = "--all-user";

	if (all_kernel)
		rec_argv[i++] = "--all-kernel";

	if (mem->cpu_list) {
		rec_argv[i++] = "-C";
		rec_argv[i++] = mem->cpu_list;
	}

	for (j = 0; j < argc; j++, i++)
		rec_argv[i] = argv[j];

	if (verbose > 0) {
		pr_debug("calling: record ");

		for (j = start; j < end; j++)
			pr_debug("%s ", rec_argv[j]);

		pr_debug("\n");
	}

	ret = cmd_record(i, rec_argv);
out:
	free(rec_argv);
	return ret;
}

static int
dump_raw_samples(struct perf_tool *tool,
		 union perf_event *event,
		 struct perf_sample *sample,
		 struct machine *machine)
{
	struct perf_mem *mem = container_of(tool, struct perf_mem, tool);
	struct addr_location al;
	const char *fmt, *field_sep;
	char str[PAGE_SIZE_NAME_LEN];
	struct dso *dso = NULL;

	addr_location__init(&al);
	if (machine__resolve(machine, &al, sample) < 0) {
		fprintf(stderr, "problem processing %d event, skipping it.\n",
				event->header.type);
		addr_location__exit(&al);
		return -1;
	}

	if (al.filtered || (mem->hide_unresolved && al.sym == NULL))
		goto out_put;

	if (al.map != NULL) {
		dso = map__dso(al.map);
		if (dso)
			dso__set_hit(dso);
	}

	field_sep = symbol_conf.field_sep;
	if (field_sep) {
		fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s";
	} else {
		fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64"%s";
		symbol_conf.field_sep = " ";
	}
	printf(fmt,
		sample->pid,
		symbol_conf.field_sep,
		sample->tid,
		symbol_conf.field_sep,
		sample->ip,
		symbol_conf.field_sep,
		sample->addr,
		symbol_conf.field_sep);

	if (mem->phys_addr) {
		printf("0x%016"PRIx64"%s",
			sample->phys_addr,
			symbol_conf.field_sep);
	}

	if (mem->data_page_size) {
		printf("%s%s",
			get_page_size_name(sample->data_page_size, str),
			symbol_conf.field_sep);
	}

	if (field_sep)
		fmt = "%"PRIu64"%s0x%"PRIx64"%s%s:%s\n";
	else
		fmt = "%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n";

	printf(fmt,
		sample->weight,
		symbol_conf.field_sep,
		sample->data_src,
		symbol_conf.field_sep,
		dso ? dso__long_name(dso) : "???",
		al.sym ? al.sym->name : "???");
out_put:
	addr_location__exit(&al);
	return 0;
}

static int process_sample_event(struct perf_tool *tool,
				union perf_event *event,
				struct perf_sample *sample,
				struct evsel *evsel __maybe_unused,
				struct machine *machine)
{
	return dump_raw_samples(tool, event, sample, machine);
}

static int report_raw_events(struct perf_mem *mem)
{
	struct itrace_synth_opts itrace_synth_opts = {
		.set = true,
		.mem = true,	/* Only enable memory event */
		.default_no_sample = true,
	};

	struct perf_data data = {
		.path  = input_name,
		.mode  = PERF_DATA_MODE_READ,
		.force = mem->force,
	};
	int ret;
	struct perf_session *session = perf_session__new(&data, &mem->tool);

	if (IS_ERR(session))
		return PTR_ERR(session);

	session->itrace_synth_opts = &itrace_synth_opts;

	if (mem->cpu_list) {
		ret = perf_session__cpu_bitmap(session, mem->cpu_list,
					       mem->cpu_bitmap);
		if (ret < 0)
			goto out_delete;
	}

	ret = symbol__init(&session->header.env);
	if (ret < 0)
		goto out_delete;

	printf("# PID, TID, IP, ADDR, ");

	if (mem->phys_addr)
		printf("PHYS ADDR, ");

	if (mem->data_page_size)
		printf("DATA PAGE SIZE, ");

	printf("LOCAL WEIGHT, DSRC, SYMBOL\n");

	ret = perf_session__process_events(session);

out_delete:
	perf_session__delete(session);
	return ret;
}
static char *get_sort_order(struct perf_mem *mem)
{
	bool has_extra_options = (mem->phys_addr | mem->data_page_size) ? true : false;
	char sort[128];

	/*
	 * there is no weight (cost) associated with stores, so don't print
	 * the column
	 */
	if (!(mem->operation & MEM_OPERATION_LOAD)) {
		strcpy(sort, "--sort=mem,sym,dso,symbol_daddr,"
			     "dso_daddr,tlb,locked");
	} else if (has_extra_options) {
		strcpy(sort, "--sort=local_weight,mem,sym,dso,symbol_daddr,"
			     "dso_daddr,snoop,tlb,locked,blocked");
	} else
		return NULL;

	if (mem->phys_addr)
		strcat(sort, ",phys_daddr");

	if (mem->data_page_size)
		strcat(sort, ",data_page_size");

	return strdup(sort);
}

static int report_events(int argc, const char **argv, struct perf_mem *mem)
{
	const char **rep_argv;
	int ret, i = 0, j, rep_argc;
	char *new_sort_order;

	if (mem->dump_raw)
		return report_raw_events(mem);

	rep_argc = argc + 3;
	rep_argv = calloc(rep_argc + 1, sizeof(char *));
	if (!rep_argv)
		return -1;

	rep_argv[i++] = "report";
	rep_argv[i++] = "--mem-mode";
	rep_argv[i++] = "-n"; /* display number of samples */

	new_sort_order = get_sort_order(mem);
	if (new_sort_order)
		rep_argv[i++] = new_sort_order;

	for (j = 1; j < argc; j++, i++)
		rep_argv[i] = argv[j];

	ret = cmd_report(i, rep_argv);
	free(rep_argv);
	return ret;
}

struct mem_mode {
	const char *name;
	int mode;
};

#define MEM_OPT(n, m) \
	{ .name = n, .mode = (m) }

#define MEM_END { .name = NULL }

static const struct mem_mode mem_modes[]={
	MEM_OPT("load", MEM_OPERATION_LOAD),
	MEM_OPT("store", MEM_OPERATION_STORE),
	MEM_END
};

static int
parse_mem_ops(const struct option *opt, const char *str, int unset)
{
	int *mode = (int *)opt->value;
	const struct mem_mode *m;
	char *s, *os = NULL, *p;
	int ret = -1;

	if (unset)
		return 0;

	/* str may be NULL in case no arg is passed to -t */
	if (str) {
		/* because str is read-only */
		s = os = strdup(str);
		if (!s)
			return -1;

		/* reset mode */
		*mode = 0;

		for (;;) {
			p = strchr(s, ',');
			if (p)
				*p = '\0';

			for (m = mem_modes; m->name; m++) {
				if (!strcasecmp(s, m->name))
					break;
			}
			if (!m->name) {
				fprintf(stderr, "unknown sampling op %s,"
					    " check man page\n", s);
				goto error;
			}

			*mode |= m->mode;

			if (!p)
				break;

			s = p + 1;
		}
	}
	ret = 0;

	if (*mode == 0)
		*mode = MEM_OPERATION_LOAD;
error:
	free(os);
	return ret;
}

int cmd_mem(int argc, const char **argv)
{
	struct stat st;
	struct perf_mem mem = {
		.tool = {
			.sample		= process_sample_event,
			.mmap		= perf_event__process_mmap,
			.mmap2		= perf_event__process_mmap2,
			.comm		= perf_event__process_comm,
			.lost		= perf_event__process_lost,
			.fork		= perf_event__process_fork,
			.attr		= perf_event__process_attr,
			.build_id	= perf_event__process_build_id,
			.namespaces	= perf_event__process_namespaces,
			.auxtrace_info  = perf_event__process_auxtrace_info,
			.auxtrace       = perf_event__process_auxtrace,
			.auxtrace_error = perf_event__process_auxtrace_error,
			.ordered_events	= true,
		},
		.input_name		 = "perf.data",
		/*
		 * default to both load an store sampling
		 */
		.operation		 = MEM_OPERATION_LOAD | MEM_OPERATION_STORE,
	};
	const struct option mem_options[] = {
	OPT_CALLBACK('t', "type", &mem.operation,
		   "type", "memory operations(load,store) Default load,store",
		    parse_mem_ops),
	OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw,
		    "dump raw samples in ASCII"),
	OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved,
		    "Only display entries resolved to a symbol"),
	OPT_STRING('i', "input", &input_name, "file",
		   "input file name"),
	OPT_STRING('C', "cpu", &mem.cpu_list, "cpu",
		   "list of cpus to profile"),
	OPT_STRING_NOEMPTY('x', "field-separator", &symbol_conf.field_sep,
		   "separator",
		   "separator for columns, no spaces will be added"
		   " between columns '.' is reserved."),
	OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"),
	OPT_BOOLEAN('p', "phys-data", &mem.phys_addr, "Record/Report sample physical addresses"),
	OPT_BOOLEAN(0, "data-page-size", &mem.data_page_size, "Record/Report sample data address page size"),
	OPT_END()
	};
	const char *const mem_subcommands[] = { "record", "report", NULL };
	const char *mem_usage[] = {
		NULL,
		NULL
	};

	argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands,
					mem_usage, PARSE_OPT_KEEP_UNKNOWN);

	if (!argc || !(strncmp(argv[0], "rec", 3) || mem.operation))
		usage_with_options(mem_usage, mem_options);

	if (!mem.input_name || !strlen(mem.input_name)) {
		if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
			mem.input_name = "-";
		else
			mem.input_name = "perf.data";
	}

	if (strlen(argv[0]) > 2 && strstarts("record", argv[0]))
		return __cmd_record(argc, argv, &mem);
	else if (strlen(argv[0]) > 2 && strstarts("report", argv[0]))
		return report_events(argc, argv, &mem);
	else
		usage_with_options(mem_usage, mem_options);

	return 0;
}