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linux/tools/perf/tests/cpumap.c
Ian Rogers 30f29bae91 perf tool: Constify tool pointers 
The tool pointer (to a struct largely of function pointers) is passed
around but is unchanged except at initialization. Change parameter and
variable types to be const to lower the possibilities of what could
happen with a tool.

Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Leo Yan <leo.yan@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Jonathan Cameron <jonathan.cameron@huawei.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Nick Terrell <terrelln@fb.com>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <song@kernel.org>
Cc: Sun Haiyong <sunhaiyong@loongson.cn>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yanteng Si <siyanteng@loongson.cn>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20240812204720.631678-4-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2024-08-12 18:05:14 -03:00

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// SPDX-License-Identifier: GPL-2.0
#include "tests.h"
#include <stdio.h>
#include "cpumap.h"
#include "event.h"
#include "util/synthetic-events.h"
#include <string.h>
#include <linux/bitops.h>
#include <internal/cpumap.h>
#include "debug.h"
struct machine;
static int process_event_mask(const struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct machine *machine __maybe_unused)
{
struct perf_record_cpu_map *map_event = &event->cpu_map;
struct perf_record_cpu_map_data *data;
struct perf_cpu_map *map;
unsigned int long_size;
data = &map_event->data;
TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__MASK);
long_size = data->mask32_data.long_size;
TEST_ASSERT_VAL("wrong long_size", long_size == 4 || long_size == 8);
TEST_ASSERT_VAL("wrong nr", data->mask32_data.nr == 1);
TEST_ASSERT_VAL("wrong cpu", perf_record_cpu_map_data__test_bit(0, data));
TEST_ASSERT_VAL("wrong cpu", !perf_record_cpu_map_data__test_bit(1, data));
for (int i = 2; i <= 20; i++)
TEST_ASSERT_VAL("wrong cpu", perf_record_cpu_map_data__test_bit(i, data));
map = cpu_map__new_data(data);
TEST_ASSERT_VAL("wrong nr", perf_cpu_map__nr(map) == 20);
TEST_ASSERT_VAL("wrong cpu", perf_cpu_map__cpu(map, 0).cpu == 0);
for (int i = 2; i <= 20; i++)
TEST_ASSERT_VAL("wrong cpu", perf_cpu_map__cpu(map, i - 1).cpu == i);
perf_cpu_map__put(map);
return 0;
}
static int process_event_cpus(const struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct machine *machine __maybe_unused)
{
struct perf_record_cpu_map *map_event = &event->cpu_map;
struct perf_record_cpu_map_data *data;
struct perf_cpu_map *map;
data = &map_event->data;
TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__CPUS);
TEST_ASSERT_VAL("wrong nr", data->cpus_data.nr == 2);
TEST_ASSERT_VAL("wrong cpu", data->cpus_data.cpu[0] == 1);
TEST_ASSERT_VAL("wrong cpu", data->cpus_data.cpu[1] == 256);
map = cpu_map__new_data(data);
TEST_ASSERT_VAL("wrong nr", perf_cpu_map__nr(map) == 2);
TEST_ASSERT_VAL("wrong cpu", perf_cpu_map__cpu(map, 0).cpu == 1);
TEST_ASSERT_VAL("wrong cpu", perf_cpu_map__cpu(map, 1).cpu == 256);
TEST_ASSERT_VAL("wrong refcnt", refcount_read(perf_cpu_map__refcnt(map)) == 1);
perf_cpu_map__put(map);
return 0;
}
static int process_event_range_cpus(const struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct machine *machine __maybe_unused)
{
struct perf_record_cpu_map *map_event = &event->cpu_map;
struct perf_record_cpu_map_data *data;
struct perf_cpu_map *map;
data = &map_event->data;
TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__RANGE_CPUS);
TEST_ASSERT_VAL("wrong any_cpu", data->range_cpu_data.any_cpu == 0);
TEST_ASSERT_VAL("wrong start_cpu", data->range_cpu_data.start_cpu == 1);
TEST_ASSERT_VAL("wrong end_cpu", data->range_cpu_data.end_cpu == 256);
map = cpu_map__new_data(data);
TEST_ASSERT_VAL("wrong nr", perf_cpu_map__nr(map) == 256);
TEST_ASSERT_VAL("wrong cpu", perf_cpu_map__cpu(map, 0).cpu == 1);
TEST_ASSERT_VAL("wrong cpu", perf_cpu_map__max(map).cpu == 256);
TEST_ASSERT_VAL("wrong refcnt", refcount_read(perf_cpu_map__refcnt(map)) == 1);
perf_cpu_map__put(map);
return 0;
}
static int test__cpu_map_synthesize(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
{
struct perf_cpu_map *cpus;
/* This one is better stored in a mask. */
cpus = perf_cpu_map__new("0,2-20");
TEST_ASSERT_VAL("failed to synthesize map",
!perf_event__synthesize_cpu_map(NULL, cpus, process_event_mask, NULL));
perf_cpu_map__put(cpus);
/* This one is better stored in cpu values. */
cpus = perf_cpu_map__new("1,256");
TEST_ASSERT_VAL("failed to synthesize map",
!perf_event__synthesize_cpu_map(NULL, cpus, process_event_cpus, NULL));
perf_cpu_map__put(cpus);
/* This one is better stored as a range. */
cpus = perf_cpu_map__new("1-256");
TEST_ASSERT_VAL("failed to synthesize map",
!perf_event__synthesize_cpu_map(NULL, cpus, process_event_range_cpus, NULL));
perf_cpu_map__put(cpus);
return 0;
}
static int cpu_map_print(const char *str)
{
struct perf_cpu_map *map = perf_cpu_map__new(str);
char buf[100];
if (!map)
return -1;
cpu_map__snprint(map, buf, sizeof(buf));
perf_cpu_map__put(map);
return !strcmp(buf, str);
}
static int test__cpu_map_print(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
{
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1"));
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,5"));
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3,5,7,9,11,13,15,17,19,21-40"));
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("2-5"));
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37"));
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37"));
TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1-10,12-20,22-30,32-40"));
return 0;
}
static int test__cpu_map_merge(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
{
struct perf_cpu_map *a = perf_cpu_map__new("4,2,1");
struct perf_cpu_map *b = perf_cpu_map__new("4,5,7");
struct perf_cpu_map *c = perf_cpu_map__merge(a, b);
char buf[100];
TEST_ASSERT_VAL("failed to merge map: bad nr", perf_cpu_map__nr(c) == 5);
cpu_map__snprint(c, buf, sizeof(buf));
TEST_ASSERT_VAL("failed to merge map: bad result", !strcmp(buf, "1-2,4-5,7"));
perf_cpu_map__put(b);
perf_cpu_map__put(c);
return 0;
}
static int __test__cpu_map_intersect(const char *lhs, const char *rhs, int nr, const char *expected)
{
struct perf_cpu_map *a = perf_cpu_map__new(lhs);
struct perf_cpu_map *b = perf_cpu_map__new(rhs);
struct perf_cpu_map *c = perf_cpu_map__intersect(a, b);
char buf[100];
TEST_ASSERT_EQUAL("failed to intersect map: bad nr", perf_cpu_map__nr(c), nr);
cpu_map__snprint(c, buf, sizeof(buf));
TEST_ASSERT_VAL("failed to intersect map: bad result", !strcmp(buf, expected));
perf_cpu_map__put(a);
perf_cpu_map__put(b);
perf_cpu_map__put(c);
return 0;
}
static int test__cpu_map_intersect(struct test_suite *test __maybe_unused,
int subtest __maybe_unused)
{
int ret;
ret = __test__cpu_map_intersect("4,2,1", "4,5,7", 1, "4");
if (ret)
return ret;
ret = __test__cpu_map_intersect("1-8", "6-9", 3, "6-8");
if (ret)
return ret;
ret = __test__cpu_map_intersect("1-8,12-20", "6-9,15", 4, "6-8,15");
if (ret)
return ret;
ret = __test__cpu_map_intersect("4,2,1", "1", 1, "1");
if (ret)
return ret;
ret = __test__cpu_map_intersect("1", "4,2,1", 1, "1");
if (ret)
return ret;
ret = __test__cpu_map_intersect("1", "1", 1, "1");
return ret;
}
static int test__cpu_map_equal(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
{
struct perf_cpu_map *any = perf_cpu_map__new_any_cpu();
struct perf_cpu_map *one = perf_cpu_map__new("1");
struct perf_cpu_map *two = perf_cpu_map__new("2");
struct perf_cpu_map *empty = perf_cpu_map__intersect(one, two);
struct perf_cpu_map *pair = perf_cpu_map__new("1-2");
struct perf_cpu_map *tmp;
struct perf_cpu_map *maps[] = {empty, any, one, two, pair};
for (size_t i = 0; i < ARRAY_SIZE(maps); i++) {
/* Maps equal themself. */
TEST_ASSERT_VAL("equal", perf_cpu_map__equal(maps[i], maps[i]));
for (size_t j = 0; j < ARRAY_SIZE(maps); j++) {
/* Maps dont't equal each other. */
if (i == j)
continue;
TEST_ASSERT_VAL("not equal", !perf_cpu_map__equal(maps[i], maps[j]));
}
}
/* Maps equal made maps. */
tmp = perf_cpu_map__merge(perf_cpu_map__get(one), two);
TEST_ASSERT_VAL("pair", perf_cpu_map__equal(pair, tmp));
perf_cpu_map__put(tmp);
tmp = perf_cpu_map__intersect(pair, one);
TEST_ASSERT_VAL("one", perf_cpu_map__equal(one, tmp));
perf_cpu_map__put(tmp);
for (size_t i = 0; i < ARRAY_SIZE(maps); i++)
perf_cpu_map__put(maps[i]);
return TEST_OK;
}
static struct test_case tests__cpu_map[] = {
TEST_CASE("Synthesize cpu map", cpu_map_synthesize),
TEST_CASE("Print cpu map", cpu_map_print),
TEST_CASE("Merge cpu map", cpu_map_merge),
TEST_CASE("Intersect cpu map", cpu_map_intersect),
TEST_CASE("Equal cpu map", cpu_map_equal),
{ .name = NULL, }
};
struct test_suite suite__cpu_map = {
.desc = "CPU map",
.test_cases = tests__cpu_map,
};
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