pmu.c
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#include "parse-events.h"
#include "pmu.h"
#include "util.h"
#include "tests.h"
/* Simulated format definitions. */
static struct test_format {
const char *name;
const char *value;
} test_formats[] = {
{ "krava01", "config:0-1,62-63\n", },
{ "krava02", "config:10-17\n", },
{ "krava03", "config:5\n", },
{ "krava11", "config1:0,2,4,6,8,20-28\n", },
{ "krava12", "config1:63\n", },
{ "krava13", "config1:45-47\n", },
{ "krava21", "config2:0-3,10-13,20-23,30-33,40-43,50-53,60-63\n", },
{ "krava22", "config2:8,18,48,58\n", },
{ "krava23", "config2:28-29,38\n", },
};
/* Simulated users input. */
static struct parse_events_term test_terms[] = {
{
.config = (char *) "krava01",
.val.num = 15,
.type_val = PARSE_EVENTS__TERM_TYPE_NUM,
.type_term = PARSE_EVENTS__TERM_TYPE_USER,
},
{
.config = (char *) "krava02",
.val.num = 170,
.type_val = PARSE_EVENTS__TERM_TYPE_NUM,
.type_term = PARSE_EVENTS__TERM_TYPE_USER,
},
{
.config = (char *) "krava03",
.val.num = 1,
.type_val = PARSE_EVENTS__TERM_TYPE_NUM,
.type_term = PARSE_EVENTS__TERM_TYPE_USER,
},
{
.config = (char *) "krava11",
.val.num = 27,
.type_val = PARSE_EVENTS__TERM_TYPE_NUM,
.type_term = PARSE_EVENTS__TERM_TYPE_USER,
},
{
.config = (char *) "krava12",
.val.num = 1,
.type_val = PARSE_EVENTS__TERM_TYPE_NUM,
.type_term = PARSE_EVENTS__TERM_TYPE_USER,
},
{
.config = (char *) "krava13",
.val.num = 2,
.type_val = PARSE_EVENTS__TERM_TYPE_NUM,
.type_term = PARSE_EVENTS__TERM_TYPE_USER,
},
{
.config = (char *) "krava21",
.val.num = 119,
.type_val = PARSE_EVENTS__TERM_TYPE_NUM,
.type_term = PARSE_EVENTS__TERM_TYPE_USER,
},
{
.config = (char *) "krava22",
.val.num = 11,
.type_val = PARSE_EVENTS__TERM_TYPE_NUM,
.type_term = PARSE_EVENTS__TERM_TYPE_USER,
},
{
.config = (char *) "krava23",
.val.num = 2,
.type_val = PARSE_EVENTS__TERM_TYPE_NUM,
.type_term = PARSE_EVENTS__TERM_TYPE_USER,
},
};
/*
* Prepare format directory data, exported by kernel
* at /sys/bus/event_source/devices/<dev>/format.
*/
static char *test_format_dir_get(void)
{
static char dir[PATH_MAX];
unsigned int i;
snprintf(dir, PATH_MAX, "/tmp/perf-pmu-test-format-XXXXXX");
if (!mkdtemp(dir))
return NULL;
for (i = 0; i < ARRAY_SIZE(test_formats); i++) {
static char name[PATH_MAX];
struct test_format *format = &test_formats[i];
FILE *file;
snprintf(name, PATH_MAX, "%s/%s", dir, format->name);
file = fopen(name, "w");
if (!file)
return NULL;
if (1 != fwrite(format->value, strlen(format->value), 1, file))
break;
fclose(file);
}
return dir;
}
/* Cleanup format directory. */
static int test_format_dir_put(char *dir)
{
char buf[PATH_MAX];
snprintf(buf, PATH_MAX, "rm -f %s/*\n", dir);
if (system(buf))
return -1;
snprintf(buf, PATH_MAX, "rmdir %s\n", dir);
return system(buf);
}
static struct list_head *test_terms_list(void)
{
static LIST_HEAD(terms);
unsigned int i;
for (i = 0; i < ARRAY_SIZE(test_terms); i++)
list_add_tail(&test_terms[i].list, &terms);
return &terms;
}
int test__pmu(void)
{
char *format = test_format_dir_get();
LIST_HEAD(formats);
struct list_head *terms = test_terms_list();
int ret;
if (!format)
return -EINVAL;
do {
struct perf_event_attr attr;
memset(&attr, 0, sizeof(attr));
ret = perf_pmu__format_parse(format, &formats);
if (ret)
break;
ret = perf_pmu__config_terms(&formats, &attr, terms);
if (ret)
break;
ret = -EINVAL;
if (attr.config != 0xc00000000002a823)
break;
if (attr.config1 != 0x8000400000000145)
break;
if (attr.config2 != 0x0400000020041d07)
break;
ret = 0;
} while (0);
test_format_dir_put(format);
return ret;
}