1 // SPDX-License-Identifier: GPL-2.0
2 #include "parse-events.h"
3 #include "pmu.h"
4 #include "tests.h"
5 #include <errno.h>
6 #include <fcntl.h>
7 #include <stdio.h>
8 #include <linux/kernel.h>
9 #include <linux/limits.h>
10 #include <linux/zalloc.h>
11
12 /* Simulated format definitions. */
13 static struct test_format {
14 const char *name;
15 const char *value;
16 } test_formats[] = {
17 { "krava01", "config:0-1,62-63\n", },
18 { "krava02", "config:10-17\n", },
19 { "krava03", "config:5\n", },
20 { "krava11", "config1:0,2,4,6,8,20-28\n", },
21 { "krava12", "config1:63\n", },
22 { "krava13", "config1:45-47\n", },
23 { "krava21", "config2:0-3,10-13,20-23,30-33,40-43,50-53,60-63\n", },
24 { "krava22", "config2:8,18,48,58\n", },
25 { "krava23", "config2:28-29,38\n", },
26 };
27
28 /* Simulated users input. */
29 static struct parse_events_term test_terms[] = {
30 {
31 .config = "krava01",
32 .val.num = 15,
33 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
34 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
35 },
36 {
37 .config = "krava02",
38 .val.num = 170,
39 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
40 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
41 },
42 {
43 .config = "krava03",
44 .val.num = 1,
45 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
46 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
47 },
48 {
49 .config = "krava11",
50 .val.num = 27,
51 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
52 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
53 },
54 {
55 .config = "krava12",
56 .val.num = 1,
57 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
58 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
59 },
60 {
61 .config = "krava13",
62 .val.num = 2,
63 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
64 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
65 },
66 {
67 .config = "krava21",
68 .val.num = 119,
69 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
70 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
71 },
72 {
73 .config = "krava22",
74 .val.num = 11,
75 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
76 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
77 },
78 {
79 .config = "krava23",
80 .val.num = 2,
81 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,
82 .type_term = PARSE_EVENTS__TERM_TYPE_USER,
83 },
84 };
85
86 /*
87 * Prepare format directory data, exported by kernel
88 * at /sys/bus/event_source/devices/<dev>/format.
89 */
test_format_dir_get(char * dir,size_t sz)90 static char *test_format_dir_get(char *dir, size_t sz)
91 {
92 unsigned int i;
93
94 snprintf(dir, sz, "/tmp/perf-pmu-test-format-XXXXXX");
95 if (!mkdtemp(dir))
96 return NULL;
97
98 for (i = 0; i < ARRAY_SIZE(test_formats); i++) {
99 char name[PATH_MAX];
100 struct test_format *format = &test_formats[i];
101 FILE *file;
102
103 scnprintf(name, PATH_MAX, "%s/%s", dir, format->name);
104
105 file = fopen(name, "w");
106 if (!file)
107 return NULL;
108
109 if (1 != fwrite(format->value, strlen(format->value), 1, file))
110 break;
111
112 fclose(file);
113 }
114
115 return dir;
116 }
117
118 /* Cleanup format directory. */
test_format_dir_put(char * dir)119 static int test_format_dir_put(char *dir)
120 {
121 char buf[PATH_MAX + 20];
122
123 snprintf(buf, sizeof(buf), "rm -f %s/*\n", dir);
124 if (system(buf))
125 return -1;
126
127 snprintf(buf, sizeof(buf), "rmdir %s\n", dir);
128 return system(buf);
129 }
130
test_terms_list(void)131 static struct list_head *test_terms_list(void)
132 {
133 static LIST_HEAD(terms);
134 unsigned int i;
135
136 for (i = 0; i < ARRAY_SIZE(test_terms); i++)
137 list_add_tail(&test_terms[i].list, &terms);
138
139 return &terms;
140 }
141
test__pmu(struct test_suite * test __maybe_unused,int subtest __maybe_unused)142 static int test__pmu(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
143 {
144 char dir[PATH_MAX];
145 char *format;
146 struct list_head *terms = test_terms_list();
147 struct perf_event_attr attr;
148 struct perf_pmu *pmu;
149 int fd;
150 int ret;
151
152 pmu = zalloc(sizeof(*pmu));
153 if (!pmu)
154 return -ENOMEM;
155
156 INIT_LIST_HEAD(&pmu->format);
157 INIT_LIST_HEAD(&pmu->aliases);
158 INIT_LIST_HEAD(&pmu->caps);
159 format = test_format_dir_get(dir, sizeof(dir));
160 if (!format) {
161 free(pmu);
162 return -EINVAL;
163 }
164
165 memset(&attr, 0, sizeof(attr));
166
167 fd = open(format, O_DIRECTORY);
168 if (fd < 0) {
169 ret = fd;
170 goto out;
171 }
172
173 pmu->name = strdup("perf-pmu-test");
174 ret = perf_pmu__format_parse(pmu, fd, /*eager_load=*/true);
175 if (ret)
176 goto out;
177
178 ret = perf_pmu__config_terms(pmu, &attr, terms, /*zero=*/false, /*err=*/NULL);
179 if (ret)
180 goto out;
181
182 ret = -EINVAL;
183 if (attr.config != 0xc00000000002a823)
184 goto out;
185 if (attr.config1 != 0x8000400000000145)
186 goto out;
187 if (attr.config2 != 0x0400000020041d07)
188 goto out;
189
190 ret = 0;
191 out:
192 test_format_dir_put(format);
193 perf_pmu__delete(pmu);
194 return ret;
195 }
196
197 DEFINE_SUITE("Parse perf pmu format", pmu);
198
