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
|
// SPDX-License-Identifier: GPL-2.0
/*
* Test support for libpfm4 event encodings.
*
* Copyright 2020 Google LLC.
*/
#include "tests.h"
#include "util/debug.h"
#include "util/evlist.h"
#include "util/pfm.h"
#include <linux/kernel.h>
#ifdef HAVE_LIBPFM
static int test__pfm_events(void);
static int test__pfm_group(void);
#endif
static const struct {
int (*func)(void);
const char *desc;
} pfm_testcase_table[] = {
#ifdef HAVE_LIBPFM
{
.func = test__pfm_events,
.desc = "test of individual --pfm-events",
},
{
.func = test__pfm_group,
.desc = "test groups of --pfm-events",
},
#endif
};
#ifdef HAVE_LIBPFM
static int count_pfm_events(struct perf_evlist *evlist)
{
struct perf_evsel *evsel;
int count = 0;
perf_evlist__for_each_entry(evlist, evsel) {
count++;
}
return count;
}
static int test__pfm_events(void)
{
struct evlist *evlist;
struct option opt;
size_t i;
const struct {
const char *events;
int nr_events;
} table[] = {
{
.events = "",
.nr_events = 0,
},
{
.events = "instructions",
.nr_events = 1,
},
{
.events = "instructions,cycles",
.nr_events = 2,
},
{
.events = "stereolab",
.nr_events = 0,
},
{
.events = "instructions,instructions",
.nr_events = 2,
},
{
.events = "stereolab,instructions",
.nr_events = 0,
},
{
.events = "instructions,stereolab",
.nr_events = 1,
},
};
for (i = 0; i < ARRAY_SIZE(table); i++) {
evlist = evlist__new();
if (evlist == NULL)
return -ENOMEM;
opt.value = evlist;
parse_libpfm_events_option(&opt,
table[i].events,
0);
TEST_ASSERT_EQUAL(table[i].events,
count_pfm_events(&evlist->core),
table[i].nr_events);
TEST_ASSERT_EQUAL(table[i].events,
evlist->core.nr_groups,
0);
evlist__delete(evlist);
}
return 0;
}
static int test__pfm_group(void)
{
struct evlist *evlist;
struct option opt;
size_t i;
const struct {
const char *events;
int nr_events;
int nr_groups;
} table[] = {
{
.events = "{},",
.nr_events = 0,
.nr_groups = 0,
},
{
.events = "{instructions}",
.nr_events = 1,
.nr_groups = 1,
},
{
.events = "{instructions},{}",
.nr_events = 1,
.nr_groups = 1,
},
{
.events = "{},{instructions}",
.nr_events = 1,
.nr_groups = 1,
},
{
.events = "{instructions},{instructions}",
.nr_events = 2,
.nr_groups = 2,
},
{
.events = "{instructions,cycles},{instructions,cycles}",
.nr_events = 4,
.nr_groups = 2,
},
{
.events = "{stereolab}",
.nr_events = 0,
.nr_groups = 0,
},
{
.events =
"{instructions,cycles},{instructions,stereolab}",
.nr_events = 3,
.nr_groups = 1,
},
{
.events = "instructions}",
.nr_events = 1,
.nr_groups = 0,
},
{
.events = "{{instructions}}",
.nr_events = 0,
.nr_groups = 0,
},
};
for (i = 0; i < ARRAY_SIZE(table); i++) {
evlist = evlist__new();
if (evlist == NULL)
return -ENOMEM;
opt.value = evlist;
parse_libpfm_events_option(&opt,
table[i].events,
0);
TEST_ASSERT_EQUAL(table[i].events,
count_pfm_events(&evlist->core),
table[i].nr_events);
TEST_ASSERT_EQUAL(table[i].events,
evlist->core.nr_groups,
table[i].nr_groups);
evlist__delete(evlist);
}
return 0;
}
#endif
static const char *test__pfm_subtest_get_desc(int i)
{
if (i < 0 || i >= (int)ARRAY_SIZE(pfm_testcase_table))
return NULL;
return pfm_testcase_table[i].desc;
}
static int test__pfm_subtest_get_nr(void)
{
return (int)ARRAY_SIZE(pfm_testcase_table);
}
static int test__pfm(struct test_suite *test __maybe_unused, int i __maybe_unused)
{
#ifdef HAVE_LIBPFM
if (i < 0 || i >= (int)ARRAY_SIZE(pfm_testcase_table))
return TEST_FAIL;
return pfm_testcase_table[i].func();
#else
return TEST_SKIP;
#endif
}
struct test_suite suite__pfm = {
.desc = "Test libpfm4 support",
.func = test__pfm,
.subtest = {
.skip_if_fail = true,
.get_nr = test__pfm_subtest_get_nr,
.get_desc = test__pfm_subtest_get_desc,
}
};
|
