[deliverable/linux.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, "%-20s%s",
			e->tag, verbose ? "" : "\n");
		if (verbose)
			fprintf(stderr, " [%s]\n", e->name);
	}
	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;

		rec_argv[i++] = "-e";
		rec_argv[i++] = perf_mem_events[j].name;
	};

	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
	};

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