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