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