summaryrefslogtreecommitdiffstats
path: root/tools/perf/builtin-bench.c
blob: 90c39baae0de0bf9fe58c2ddb94caca8f8ab1556 (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
/*
 *
 * builtin-bench.c
 *
 * General benchmarking subsystem provided by perf
 *
 * Copyright (C) 2009, Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
 *
 */

/*
 *
 * Available subsystem list:
 *  sched ... scheduler and IPC mechanism
 *
 */

#include "perf.h"
#include "util/util.h"
#include "util/parse-options.h"
#include "builtin.h"
#include "bench/bench.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct bench_suite {
	const char *name;
	const char *summary;
	int (*fn)(int, const char **, const char *);
};

static struct bench_suite sched_suites[] = {
	{ "messaging",
	  "Benchmark for scheduler and IPC mechanisms",
	  bench_sched_messaging },
	{ "pipe",
	  "Flood of communication over pipe() between two processes",
	  bench_sched_pipe      },
	{ NULL,
	  NULL,
	  NULL                  }
};

struct bench_subsys {
	const char *name;
	const char *summary;
	struct bench_suite *suites;
};

static struct bench_subsys subsystems[] = {
	{ "sched",
	  "scheduler and IPC mechanism",
	  sched_suites },
	{ NULL,
	  NULL,
	  NULL         }
};

static void dump_suites(int subsys_index)
{
	int i;

	printf("List of available suites for %s...\n\n",
	       subsystems[subsys_index].name);

	for (i = 0; subsystems[subsys_index].suites[i].name; i++)
		printf("\t%s: %s\n",
		       subsystems[subsys_index].suites[i].name,
		       subsystems[subsys_index].suites[i].summary);

	printf("\n");
	return;
}

static char *bench_format_str;
int bench_format = BENCH_FORMAT_DEFAULT;

static const struct option bench_options[] = {
	OPT_STRING('f', "format", &bench_format_str, "default",
		    "Specify format style"),
	OPT_END()
};

static const char * const bench_usage[] = {
	"perf bench [<common options>] <subsystem> <suite> [<options>]",
	NULL
};

static void print_usage(void)
{
	int i;

	printf("Usage: \n");
	for (i = 0; bench_usage[i]; i++)
		printf("\t%s\n", bench_usage[i]);
	printf("\n");

	printf("List of available subsystems...\n\n");

	for (i = 0; subsystems[i].name; i++)
		printf("\t%s: %s\n",
		       subsystems[i].name, subsystems[i].summary);
	printf("\n");
}

static int bench_str2int(char *str)
{
	if (!str)
		return BENCH_FORMAT_DEFAULT;

	if (!strcmp(str, BENCH_FORMAT_DEFAULT_STR))
		return BENCH_FORMAT_DEFAULT;
	else if (!strcmp(str, BENCH_FORMAT_SIMPLE_STR))
		return BENCH_FORMAT_SIMPLE;

	return BENCH_FORMAT_UNKNOWN;
}

int cmd_bench(int argc, const char **argv, const char *prefix __used)
{
	int i, j, status = 0;

	if (argc < 2) {
		/* No subsystem specified. */
		print_usage();
		goto end;
	}

	argc = parse_options(argc, argv, bench_options, bench_usage,
			     PARSE_OPT_STOP_AT_NON_OPTION);

	bench_format = bench_str2int(bench_format_str);
	if (bench_format == BENCH_FORMAT_UNKNOWN) {
		printf("Unknown format descriptor:%s\n", bench_format_str);
		goto end;
	}

	if (argc < 1) {
		print_usage();
		goto end;
	}

	for (i = 0; subsystems[i].name; i++) {
		if (strcmp(subsystems[i].name, argv[0]))
			continue;

		if (argc < 2) {
			/* No suite specified. */
			dump_suites(i);
			goto end;
		}

		for (j = 0; subsystems[i].suites[j].name; j++) {
			if (strcmp(subsystems[i].suites[j].name, argv[1]))
				continue;

			if (bench_format == BENCH_FORMAT_DEFAULT)
				printf("# Running %s/%s benchmark...\n",
				       subsystems[i].name,
				       subsystems[i].suites[j].name);
			status = subsystems[i].suites[j].fn(argc - 1,
							    argv + 1, prefix);
			goto end;
		}

		if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) {
			dump_suites(i);
			goto end;
		}

		printf("Unknown suite:%s for %s\n", argv[1], argv[0]);
		status = 1;
		goto end;
	}

	printf("Unknown subsystem:%s\n", argv[0]);
	status = 1;

end:
	return status;
}
OpenPOWER on IntegriCloud