summaryrefslogtreecommitdiffstats
path: root/tools/perf/tests/pmu.c
blob: faa04e9d5d5fc751a1ac8082522fb045f108a060 (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
#include "parse-events.h"
#include "pmu.h"
#include "util.h"
#include "tests.h"

/* Simulated format definitions. */
static struct test_format {
	const char *name;
	const char *value;
} test_formats[] = {
	{ "krava01", "config:0-1,62-63\n", },
	{ "krava02", "config:10-17\n", },
	{ "krava03", "config:5\n", },
	{ "krava11", "config1:0,2,4,6,8,20-28\n", },
	{ "krava12", "config1:63\n", },
	{ "krava13", "config1:45-47\n", },
	{ "krava21", "config2:0-3,10-13,20-23,30-33,40-43,50-53,60-63\n", },
	{ "krava22", "config2:8,18,48,58\n", },
	{ "krava23", "config2:28-29,38\n", },
};

/* Simulated users input. */
static struct parse_events_term test_terms[] = {
	{
		.config    = (char *) "krava01",
		.val.num   = 15,
		.type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
		.type_term = PARSE_EVENTS__TERM_TYPE_USER,
	},
	{
		.config    = (char *) "krava02",
		.val.num   = 170,
		.type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
		.type_term = PARSE_EVENTS__TERM_TYPE_USER,
	},
	{
		.config    = (char *) "krava03",
		.val.num   = 1,
		.type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
		.type_term = PARSE_EVENTS__TERM_TYPE_USER,
	},
	{
		.config    = (char *) "krava11",
		.val.num   = 27,
		.type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
		.type_term = PARSE_EVENTS__TERM_TYPE_USER,
	},
	{
		.config    = (char *) "krava12",
		.val.num   = 1,
		.type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
		.type_term = PARSE_EVENTS__TERM_TYPE_USER,
	},
	{
		.config    = (char *) "krava13",
		.val.num   = 2,
		.type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
		.type_term = PARSE_EVENTS__TERM_TYPE_USER,
	},
	{
		.config    = (char *) "krava21",
		.val.num   = 119,
		.type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
		.type_term = PARSE_EVENTS__TERM_TYPE_USER,
	},
	{
		.config    = (char *) "krava22",
		.val.num   = 11,
		.type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
		.type_term = PARSE_EVENTS__TERM_TYPE_USER,
	},
	{
		.config    = (char *) "krava23",
		.val.num   = 2,
		.type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
		.type_term = PARSE_EVENTS__TERM_TYPE_USER,
	},
};

/*
 * Prepare format directory data, exported by kernel
 * at /sys/bus/event_source/devices/<dev>/format.
 */
static char *test_format_dir_get(void)
{
	static char dir[PATH_MAX];
	unsigned int i;

	snprintf(dir, PATH_MAX, "/tmp/perf-pmu-test-format-XXXXXX");
	if (!mkdtemp(dir))
		return NULL;

	for (i = 0; i < ARRAY_SIZE(test_formats); i++) {
		static char name[PATH_MAX];
		struct test_format *format = &test_formats[i];
		FILE *file;

		snprintf(name, PATH_MAX, "%s/%s", dir, format->name);

		file = fopen(name, "w");
		if (!file)
			return NULL;

		if (1 != fwrite(format->value, strlen(format->value), 1, file))
			break;

		fclose(file);
	}

	return dir;
}

/* Cleanup format directory. */
static int test_format_dir_put(char *dir)
{
	char buf[PATH_MAX];
	snprintf(buf, PATH_MAX, "rm -f %s/*\n", dir);
	if (system(buf))
		return -1;

	snprintf(buf, PATH_MAX, "rmdir %s\n", dir);
	return system(buf);
}

static struct list_head *test_terms_list(void)
{
	static LIST_HEAD(terms);
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(test_terms); i++)
		list_add_tail(&test_terms[i].list, &terms);

	return &terms;
}

int test__pmu(void)
{
	char *format = test_format_dir_get();
	LIST_HEAD(formats);
	struct list_head *terms = test_terms_list();
	int ret;

	if (!format)
		return -EINVAL;

	do {
		struct perf_event_attr attr;

		memset(&attr, 0, sizeof(attr));

		ret = perf_pmu__format_parse(format, &formats);
		if (ret)
			break;

		ret = perf_pmu__config_terms(&formats, &attr, terms,
					     false, NULL);
		if (ret)
			break;

		ret = -EINVAL;

		if (attr.config  != 0xc00000000002a823)
			break;
		if (attr.config1 != 0x8000400000000145)
			break;
		if (attr.config2 != 0x0400000020041d07)
			break;

		ret = 0;
	} while (0);

	test_format_dir_put(format);
	return ret;
}