kernel/tools/perf/tests/pmu.c

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