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// SPDX-License-Identifier: GPL-2.0
/*
* Test support for libpfm4 event encodings.
*
* Copyright 2020 Google LLC.
*/
#include "tests.h"
#include "util/debug.h"
#include "util/evlist.h"
#include "util/pfm.h"
#include <linux/kernel.h>
#ifdef HAVE_LIBPFM
static int test__pfm_events(void);
static int test__pfm_group(void);
#endif
static const struct {
int (*func)(void);
const char *desc;
} pfm_testcase_table[] = {
#ifdef HAVE_LIBPFM
{
.func = test__pfm_events,
.desc = "test of individual --pfm-events",
},
{
.func = test__pfm_group,
.desc = "test groups of --pfm-events",
},
#endif
};
#ifdef HAVE_LIBPFM
static int count_pfm_events(struct perf_evlist *evlist)
{
struct perf_evsel *evsel;
int count = 0;
perf_evlist__for_each_entry(evlist, evsel) {
count++;
}
return count;
}
static int test__pfm_events(void)
{
struct evlist *evlist;
struct option opt;
size_t i;
const struct {
const char *events;
int nr_events;
} table[] = {
{
.events = "",
.nr_events = 0,
},
{
.events = "instructions",
.nr_events = 1,
},
{
.events = "instructions,cycles",
.nr_events = 2,
},
{
.events = "stereolab",
.nr_events = 0,
},
{
.events = "instructions,instructions",
.nr_events = 2,
},
{
.events = "stereolab,instructions",
.nr_events = 0,
},
{
.events = "instructions,stereolab",
.nr_events = 1,
},
};
for (i = 0; i < ARRAY_SIZE(table); i++) {
evlist = evlist__new();
if (evlist == NULL)
return -ENOMEM;
opt.value = evlist;
parse_libpfm_events_option(&opt,
table[i].events,
0);
TEST_ASSERT_EQUAL(table[i].events,
count_pfm_events(&evlist->core),
table[i].nr_events);
TEST_ASSERT_EQUAL(table[i].events,
evlist->core.nr_groups,
0);
evlist__delete(evlist);
}
return 0;
}
static int test__pfm_group(void)
{
struct evlist *evlist;
struct option opt;
size_t i;
const struct {
const char *events;
int nr_events;
int nr_groups;
} table[] = {
{
.events = "{},",
.nr_events = 0,
.nr_groups = 0,
},
{
.events = "{instructions}",
.nr_events = 1,
.nr_groups = 1,
},
{
.events = "{instructions},{}",
.nr_events = 1,
.nr_groups = 1,
},
{
.events = "{},{instructions}",
.nr_events = 1,
.nr_groups = 1,
},
{
.events = "{instructions},{instructions}",
.nr_events = 2,
.nr_groups = 2,
},
{
.events = "{instructions,cycles},{instructions,cycles}",
.nr_events = 4,
.nr_groups = 2,
},
{
.events = "{stereolab}",
.nr_events = 0,
.nr_groups = 0,
},
{
.events =
"{instructions,cycles},{instructions,stereolab}",
.nr_events = 3,
.nr_groups = 1,
},
{
.events = "instructions}",
.nr_events = 1,
.nr_groups = 0,
},
{
.events = "{{instructions}}",
.nr_events = 0,
.nr_groups = 0,
},
};
for (i = 0; i < ARRAY_SIZE(table); i++) {
evlist = evlist__new();
if (evlist == NULL)
return -ENOMEM;
opt.value = evlist;
parse_libpfm_events_option(&opt,
table[i].events,
0);
TEST_ASSERT_EQUAL(table[i].events,
count_pfm_events(&evlist->core),
table[i].nr_events);
TEST_ASSERT_EQUAL(table[i].events,
evlist->core.nr_groups,
table[i].nr_groups);
evlist__delete(evlist);
}
return 0;
}
#endif
const char *test__pfm_subtest_get_desc(int i)
{
if (i < 0 || i >= (int)ARRAY_SIZE(pfm_testcase_table))
return NULL;
return pfm_testcase_table[i].desc;
}
int test__pfm_subtest_get_nr(void)
{
return (int)ARRAY_SIZE(pfm_testcase_table);
}
int test__pfm(struct test *test __maybe_unused, int i __maybe_unused)
{
#ifdef HAVE_LIBPFM
if (i < 0 || i >= (int)ARRAY_SIZE(pfm_testcase_table))
return TEST_FAIL;
return pfm_testcase_table[i].func();
#else
return TEST_SKIP;
#endif
}
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