[linux-2.6-block.git] / tools / perf / builtin-mem.c

#include "builtin.h"
#include "perf.h"

#include <subcmd/parse-options.h>
#include "util/trace-event.h"
#include "util/tool.h"
#include "util/session.h"
#include "util/data.h"
#include "util/mem-events.h"
#include "util/debug.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;
	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;
	int j;

	if (strcmp(str, "list")) {
		if (!perf_mem_events__parse(str)) {
			mem->operation = 0;
			return 0;
		}
		exit(-1);
	}

	for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
		struct perf_mem_event *e = &perf_mem_events[j];

		fprintf(stderr, "%-13s%-*s%s\n",
			e->tag,
			verbose ? 25 : 0,
			verbose ? perf_mem_events__name(j) : "",
			e->supported ? ": available" : "");
	}
	exit(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;
	const char **rec_argv;
	int ret;
	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_INCR('v', "verbose", &verbose,
		 "be more verbose (show counter open errors, etc)"),
	OPT_END()
	};

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

	rec_argc = argc + 7; /* max number of arguments */
	rec_argv = calloc(rec_argc + 1, sizeof(char *));
	if (!rec_argv)
		return -1;

	rec_argv[i++] = "record";

	if (mem->operation & MEM_OPERATION_LOAD)
		perf_mem_events[PERF_MEM_EVENTS__LOAD].record = true;

	if (perf_mem_events[PERF_MEM_EVENTS__LOAD].record)
		rec_argv[i++] = "-W";

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

	for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
		if (!perf_mem_events[j].record)
			continue;

		if (!perf_mem_events[j].supported) {
			pr_err("failed: event '%s' not supported\n",
			       perf_mem_events__name(j));
			return -1;
		}

		rec_argv[i++] = "-e";
		rec_argv[i++] = perf_mem_events__name(j);
	};

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

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

		while (rec_argv[j]) {
			pr_debug("%s ", rec_argv[j]);
			j++;
		}
		pr_debug("\n");
	}

	ret = cmd_record(i, rec_argv, NULL);
	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;

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

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

	if (al.map != NULL)
		al.map->dso->hit = 1;

	if (symbol_conf.field_sep) {
		fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s%"PRIu64
		      "%s0x%"PRIx64"%s%s:%s\n";
	} else {
		fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64
		      "%s%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n";
		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,
		sample->weight,
		symbol_conf.field_sep,
		sample->data_src,
		symbol_conf.field_sep,
		al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???",
		al.sym ? al.sym->name : "???");
out_put:
	addr_location__put(&al);
	return 0;
}

static int process_sample_event(struct perf_tool *tool,
				union perf_event *event,
				struct perf_sample *sample,
				struct perf_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 perf_data_file file = {
		.path = input_name,
		.mode = PERF_DATA_MODE_READ,
		.force = mem->force,
	};
	int ret;
	struct perf_session *session = perf_session__new(&file, false,
							 &mem->tool);

	if (session == NULL)
		return -1;

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

	ret = perf_session__process_events(session);

out_delete:
	perf_session__delete(session);
	return ret;
}

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

	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 */

	/*
	 * there is no weight (cost) associated with stores, so don't print
	 * the column
	 */
	if (!(mem->operation & MEM_OPERATION_LOAD))
		rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr,"
				"dso_daddr,tlb,locked";

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

	ret = cmd_report(i, rep_argv, NULL);
	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, const char *prefix __maybe_unused)
{
	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,
			.build_id	= perf_event__process_build_id,
			.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_END()
	};
	const char *const mem_subcommands[] = { "record", "report", NULL };
	const char *mem_usage[] = {
		NULL,
		NULL
	};

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

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

	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 (!strncmp(argv[0], "rec", 3))
		return __cmd_record(argc, argv, &mem);
	else if (!strncmp(argv[0], "rep", 3))
		return report_events(argc, argv, &mem);
	else
		usage_with_options(mem_usage, mem_options);

	return 0;
}
Commit	Line	Data
028f12ee SE	1	#include "builtin.h"
	2	#include "perf.h"
	3
4b6ab94e	4	#include <subcmd/parse-options.h>
028f12ee SE	5	#include "util/trace-event.h"
	6	#include "util/tool.h"
	7	#include "util/session.h"
f5fc1412	8	#include "util/data.h"
acbe613e	9	#include "util/mem-events.h"
ce1e22b0	10	#include "util/debug.h"
028f12ee	11
67121f85 SE	12	#define MEM_OPERATION_LOAD 0x1
67121f85 SE	13	#define MEM_OPERATION_STORE 0x2
028f12ee	14
028f12ee SE	15	struct perf_mem {
	16	struct perf_tool tool;
	17	char const *input_name;
028f12ee SE	18	bool hide_unresolved;
028f12ee SE	19	bool dump_raw;
62a1a63a	20	bool force;
66024122	21	int operation;
028f12ee SE	22	const char *cpu_list;
	23	DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
	24	};
	25
ce1e22b0 JO	26	static int parse_record_events(const struct option *opt,
	27	const char *str, int unset __maybe_unused)
	28	{
	29	struct perf_mem mem = (struct perf_mem **)opt->value;
	30	int j;
	31
	32	if (strcmp(str, "list")) {
	33	if (!perf_mem_events__parse(str)) {
	34	mem->operation = 0;
	35	return 0;
	36	}
	37	exit(-1);
	38	}
	39
	40	for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
	41	struct perf_mem_event *e = &perf_mem_events[j];
	42
54fbad54 JO	43	fprintf(stderr, "%-13s%-*s%s\n",
	44	e->tag,
	45	verbose ? 25 : 0,
2ba7ac58	46	verbose ? perf_mem_events__name(j) : "",
54fbad54	47	e->supported ? ": available" : "");
ce1e22b0 JO	48	}
	49	exit(0);
	50	}
	51
	52	static const char * const __usage[] = {
	53	"perf mem record [<options>] [<command>]",
	54	"perf mem record [<options>] -- <command> [<options>]",
	55	NULL
	56	};
	57
	58	static const char * const *record_mem_usage = __usage;
	59
66024122	60	static int __cmd_record(int argc, const char *argv, struct perf_mem mem)
028f12ee SE	61	{
	62	int rec_argc, i = 0, j;
	63	const char **rec_argv;
028f12ee	64	int ret;
ce1e22b0 JO	65	struct option options[] = {
	66	OPT_CALLBACK('e', "event", &mem, "event",
	67	"event selector. use 'perf mem record -e list' to list available events",
	68	parse_record_events),
	69	OPT_INCR('v', "verbose", &verbose,
	70	"be more verbose (show counter open errors, etc)"),
	71	OPT_END()
	72	};
	73
	74	argc = parse_options(argc, argv, options, record_mem_usage,
	75	PARSE_OPT_STOP_AT_NON_OPTION);
028f12ee	76
67121f85	77	rec_argc = argc + 7; /* max number of arguments */
028f12ee SE	78	rec_argv = calloc(rec_argc + 1, sizeof(char *));
	79	if (!rec_argv)
	80	return -1;
	81
67121f85	82	rec_argv[i++] = "record";
028f12ee	83
ce1e22b0	84	if (mem->operation & MEM_OPERATION_LOAD)
acbe613e	85	perf_mem_events[PERF_MEM_EVENTS__LOAD].record = true;
ce1e22b0 JO	86
ce1e22b0 JO	87	if (perf_mem_events[PERF_MEM_EVENTS__LOAD].record)
67121f85 SE	88	rec_argv[i++] = "-W";
	89
	90	rec_argv[i++] = "-d";
	91
acbe613e JO	92	for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
	93	if (!perf_mem_events[j].record)
	94	continue;
67121f85	95
54fbad54 JO	96	if (!perf_mem_events[j].supported) {
54fbad54 JO	97	pr_err("failed: event '%s' not supported\n",
2ba7ac58	98	perf_mem_events__name(j));
54fbad54 JO	99	return -1;
	100	}
	101
67121f85	102	rec_argv[i++] = "-e";
2ba7ac58	103	rec_argv[i++] = perf_mem_events__name(j);
acbe613e	104	};
028f12ee	105
ce1e22b0	106	for (j = 0; j < argc; j++, i++)
028f12ee SE	107	rec_argv[i] = argv[j];
028f12ee SE	108
ce1e22b0 JO	109	if (verbose > 0) {
	110	pr_debug("calling: record ");
	111
	112	while (rec_argv[j]) {
	113	pr_debug("%s ", rec_argv[j]);
	114	j++;
	115	}
	116	pr_debug("\n");
	117	}
	118
028f12ee SE	119	ret = cmd_record(i, rec_argv, NULL);
	120	free(rec_argv);
	121	return ret;
	122	}
	123
	124	static int
	125	dump_raw_samples(struct perf_tool *tool,
	126	union perf_event *event,
	127	struct perf_sample *sample,
028f12ee SE	128	struct machine *machine)
	129	{
	130	struct perf_mem *mem = container_of(tool, struct perf_mem, tool);
	131	struct addr_location al;
	132	const char *fmt;
	133
e44baa3e	134	if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
028f12ee SE	135	fprintf(stderr, "problem processing %d event, skipping it.\n",
	136	event->header.type);
	137	return -1;
	138	}
	139
	140	if (al.filtered \|\| (mem->hide_unresolved && al.sym == NULL))
b91fc39f	141	goto out_put;
028f12ee SE	142
	143	if (al.map != NULL)
	144	al.map->dso->hit = 1;
	145
	146	if (symbol_conf.field_sep) {
	147	fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s%"PRIu64
	148	"%s0x%"PRIx64"%s%s:%s\n";
	149	} else {
	150	fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64
	151	"%s%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n";
	152	symbol_conf.field_sep = " ";
	153	}
	154
	155	printf(fmt,
	156	sample->pid,
	157	symbol_conf.field_sep,
	158	sample->tid,
	159	symbol_conf.field_sep,
ef89325f	160	sample->ip,
028f12ee SE	161	symbol_conf.field_sep,
	162	sample->addr,
	163	symbol_conf.field_sep,
	164	sample->weight,
	165	symbol_conf.field_sep,
	166	sample->data_src,
	167	symbol_conf.field_sep,
	168	al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???",
	169	al.sym ? al.sym->name : "???");
b91fc39f ACM	170	out_put:
b91fc39f ACM	171	addr_location__put(&al);
028f12ee SE	172	return 0;
	173	}
	174
	175	static int process_sample_event(struct perf_tool *tool,
	176	union perf_event *event,
	177	struct perf_sample *sample,
8b640cc4	178	struct perf_evsel *evsel __maybe_unused,
028f12ee SE	179	struct machine *machine)
028f12ee SE	180	{
8b640cc4	181	return dump_raw_samples(tool, event, sample, machine);
028f12ee SE	182	}
	183
	184	static int report_raw_events(struct perf_mem *mem)
	185	{
f5fc1412 JO	186	struct perf_data_file file = {
	187	.path = input_name,
	188	.mode = PERF_DATA_MODE_READ,
62a1a63a	189	.force = mem->force,
f5fc1412	190	};
028f12ee	191	int ret;
f5fc1412 JO	192	struct perf_session *session = perf_session__new(&file, false,
f5fc1412 JO	193	&mem->tool);
028f12ee SE	194
028f12ee SE	195	if (session == NULL)
52e02834	196	return -1;
028f12ee SE	197
	198	if (mem->cpu_list) {
	199	ret = perf_session__cpu_bitmap(session, mem->cpu_list,
	200	mem->cpu_bitmap);
1df9fade	201	if (ret < 0)
028f12ee SE	202	goto out_delete;
	203	}
	204
1df9fade TS	205	ret = symbol__init(&session->header.env);
	206	if (ret < 0)
	207	goto out_delete;
028f12ee SE	208
	209	printf("# PID, TID, IP, ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n");
	210
1df9fade	211	ret = perf_session__process_events(session);
028f12ee SE	212
	213	out_delete:
	214	perf_session__delete(session);
1df9fade	215	return ret;
028f12ee SE	216	}
	217
	218	static int report_events(int argc, const char *argv, struct perf_mem mem)
	219	{
	220	const char **rep_argv;
	221	int ret, i = 0, j, rep_argc;
	222
	223	if (mem->dump_raw)
	224	return report_raw_events(mem);
	225
	226	rep_argc = argc + 3;
	227	rep_argv = calloc(rep_argc + 1, sizeof(char *));
	228	if (!rep_argv)
	229	return -1;
	230
67121f85 SE	231	rep_argv[i++] = "report";
	232	rep_argv[i++] = "--mem-mode";
	233	rep_argv[i++] = "-n"; /* display number of samples */
028f12ee SE	234
	235	/*
	236	* there is no weight (cost) associated with stores, so don't print
	237	* the column
	238	*/
66024122	239	if (!(mem->operation & MEM_OPERATION_LOAD))
67121f85 SE	240	rep_argv[i++] = "--sort=mem,sym,dso,symbol_daddr,"
67121f85 SE	241	"dso_daddr,tlb,locked";
028f12ee SE	242
	243	for (j = 1; j < argc; j++, i++)
	244	rep_argv[i] = argv[j];
	245
	246	ret = cmd_report(i, rep_argv, NULL);
	247	free(rep_argv);
	248	return ret;
	249	}
	250
67121f85 SE	251	struct mem_mode {
	252	const char *name;
	253	int mode;
	254	};
	255
	256	#define MEM_OPT(n, m) \
	257	{ .name = n, .mode = (m) }
	258
	259	#define MEM_END { .name = NULL }
	260
	261	static const struct mem_mode mem_modes[]={
	262	MEM_OPT("load", MEM_OPERATION_LOAD),
	263	MEM_OPT("store", MEM_OPERATION_STORE),
	264	MEM_END
	265	};
	266
	267	static int
	268	parse_mem_ops(const struct option opt, const char str, int unset)
	269	{
	270	int mode = (int )opt->value;
	271	const struct mem_mode *m;
	272	char s, os = NULL, *p;
	273	int ret = -1;
	274
	275	if (unset)
	276	return 0;
	277
	278	/* str may be NULL in case no arg is passed to -t */
	279	if (str) {
	280	/* because str is read-only */
	281	s = os = strdup(str);
	282	if (!s)
	283	return -1;
	284
	285	/* reset mode */
	286	*mode = 0;
	287
	288	for (;;) {
	289	p = strchr(s, ',');
	290	if (p)
	291	*p = '\0';
	292
	293	for (m = mem_modes; m->name; m++) {
	294	if (!strcasecmp(s, m->name))
	295	break;
	296	}
	297	if (!m->name) {
	298	fprintf(stderr, "unknown sampling op %s,"
	299	" check man page\n", s);
	300	goto error;
	301	}
	302
	303	*mode \|= m->mode;
	304
	305	if (!p)
	306	break;
	307
	308	s = p + 1;
	309	}
	310	}
	311	ret = 0;
	312
	313	if (*mode == 0)
	314	*mode = MEM_OPERATION_LOAD;
315	error:
316	free(os);
317	return ret;
318	}
319
028f12ee SE	320	int cmd_mem(int argc, const char *argv, const char prefix __maybe_unused)
	321	{
	322	struct stat st;
	323	struct perf_mem mem = {
	324	.tool = {
	325	.sample = process_sample_event,
	326	.mmap = perf_event__process_mmap,
5c5e854b	327	.mmap2 = perf_event__process_mmap2,
028f12ee SE	328	.comm = perf_event__process_comm,
	329	.lost = perf_event__process_lost,
	330	.fork = perf_event__process_fork,
	331	.build_id = perf_event__process_build_id,
0a8cb85c	332	.ordered_events = true,
028f12ee SE	333	},
028f12ee SE	334	.input_name = "perf.data",
66024122 ACM	335	/*
	336	* default to both load an store sampling
	337	*/
	338	.operation = MEM_OPERATION_LOAD \| MEM_OPERATION_STORE,
028f12ee SE	339	};
028f12ee SE	340	const struct option mem_options[] = {
66024122	341	OPT_CALLBACK('t', "type", &mem.operation,
67121f85 SE	342	"type", "memory operations(load,store) Default load,store",
67121f85 SE	343	parse_mem_ops),
028f12ee SE	344	OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw,
	345	"dump raw samples in ASCII"),
	346	OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved,
	347	"Only display entries resolved to a symbol"),
	348	OPT_STRING('i', "input", &input_name, "file",
	349	"input file name"),
	350	OPT_STRING('C', "cpu", &mem.cpu_list, "cpu",
	351	"list of cpus to profile"),
8b8ca6e1	352	OPT_STRING_NOEMPTY('x', "field-separator", &symbol_conf.field_sep,
028f12ee SE	353	"separator",
	354	"separator for columns, no spaces will be added"
	355	" between columns '.' is reserved."),
62a1a63a	356	OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"),
028f12ee SE	357	OPT_END()
028f12ee SE	358	};
8d2a2a1d RR	359	const char *const mem_subcommands[] = { "record", "report", NULL };
	360	const char *mem_usage[] = {
	361	NULL,
	362	NULL
	363	};
	364
54fbad54 JO	365	if (perf_mem_events__init()) {
	366	pr_err("failed: memory events not supported\n");
	367	return -1;
	368	}
	369
8d2a2a1d RR	370	argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands,
8d2a2a1d RR	371	mem_usage, PARSE_OPT_STOP_AT_NON_OPTION);
028f12ee	372
66024122	373	if (!argc \|\| !(strncmp(argv[0], "rec", 3) \|\| mem.operation))
028f12ee SE	374	usage_with_options(mem_usage, mem_options);
	375
	376	if (!mem.input_name \|\| !strlen(mem.input_name)) {
	377	if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
	378	mem.input_name = "-";
	379	else
	380	mem.input_name = "perf.data";
	381	}
	382
	383	if (!strncmp(argv[0], "rec", 3))
66024122	384	return __cmd_record(argc, argv, &mem);
028f12ee SE	385	else if (!strncmp(argv[0], "rep", 3))
	386	return report_events(argc, argv, &mem);
	387	else
	388	usage_with_options(mem_usage, mem_options);
	389
	390	return 0;
	391	}