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