tools/perf/tests/pmu.c

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