cpumap.c

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// SPDX-License-Identifier: GPL-2.0
#include "tests.h"
#include <stdio.h>
#include "cpumap.h"
#include "event.h"
#include <string.h>
#include <linux/bitops.h>
#include "debug.h"

struct machine;

static int process_event_mask(struct perf_tool *tool __maybe_unused,
             union perf_event *event,
             struct perf_sample *sample __maybe_unused,
             struct machine *machine __maybe_unused)
{
    struct cpu_map_event *map_event = &event->cpu_map;
    struct cpu_map_mask *mask;
    struct cpu_map_data *data;
    struct cpu_map *map;
    int i;

    data = &map_event->data;

    TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__MASK);

    mask = (struct cpu_map_mask *)data->data;

    TEST_ASSERT_VAL("wrong nr",   mask->nr == 1);

    for (i = 0; i < 20; i++) {
        TEST_ASSERT_VAL("wrong cpu", test_bit(i, mask->mask));
    }

    map = cpu_map__new_data(data);
    TEST_ASSERT_VAL("wrong nr",  map->nr == 20);

    for (i = 0; i < 20; i++) {
        TEST_ASSERT_VAL("wrong cpu", map->map[i] == i);
    }

    cpu_map__put(map);
    return 0;
}

static int process_event_cpus(struct perf_tool *tool __maybe_unused,
             union perf_event *event,
             struct perf_sample *sample __maybe_unused,
             struct machine *machine __maybe_unused)
{
    struct cpu_map_event *map_event = &event->cpu_map;
    struct cpu_map_entries *cpus;
    struct cpu_map_data *data;
    struct cpu_map *map;

    data = &map_event->data;

    TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__CPUS);

    cpus = (struct cpu_map_entries *)data->data;

    TEST_ASSERT_VAL("wrong nr",   cpus->nr == 2);
    TEST_ASSERT_VAL("wrong cpu",  cpus->cpu[0] == 1);
    TEST_ASSERT_VAL("wrong cpu",  cpus->cpu[1] == 256);

    map = cpu_map__new_data(data);
    TEST_ASSERT_VAL("wrong nr",  map->nr == 2);
    TEST_ASSERT_VAL("wrong cpu", map->map[0] == 1);
    TEST_ASSERT_VAL("wrong cpu", map->map[1] == 256);
    TEST_ASSERT_VAL("wrong refcnt", refcount_read(&map->refcnt) == 1);
    cpu_map__put(map);
    return 0;
}


int test__cpu_map_synthesize(struct test *test __maybe_unused, int subtest __maybe_unused)
{
    struct cpu_map *cpus;

    /* This one is better stores in mask. */
    cpus = cpu_map__new("0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19");

    TEST_ASSERT_VAL("failed to synthesize map",
        !perf_event__synthesize_cpu_map(NULL, cpus, process_event_mask, NULL));

    cpu_map__put(cpus);

    /* This one is better stores in cpu values. */
    cpus = cpu_map__new("1,256");

    TEST_ASSERT_VAL("failed to synthesize map",
        !perf_event__synthesize_cpu_map(NULL, cpus, process_event_cpus, NULL));

    cpu_map__put(cpus);
    return 0;
}

static int cpu_map_print(const char *str)
{
    struct cpu_map *map = cpu_map__new(str);
    char buf[100];

    if (!map)
        return -1;

    cpu_map__snprint(map, buf, sizeof(buf));
    return !strcmp(buf, str);
}

int test__cpu_map_print(struct test *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;
}