linux/tools/perf/tests/cpumap.c
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   1// SPDX-License-Identifier: GPL-2.0
   2#include "tests.h"
   3#include <stdio.h>
   4#include "cpumap.h"
   5#include "event.h"
   6#include "util/synthetic-events.h"
   7#include <string.h>
   8#include <linux/bitops.h>
   9#include <perf/cpumap.h>
  10#include "debug.h"
  11
  12struct machine;
  13
  14static int process_event_mask(struct perf_tool *tool __maybe_unused,
  15                         union perf_event *event,
  16                         struct perf_sample *sample __maybe_unused,
  17                         struct machine *machine __maybe_unused)
  18{
  19        struct perf_record_cpu_map *map_event = &event->cpu_map;
  20        struct perf_record_record_cpu_map *mask;
  21        struct perf_record_cpu_map_data *data;
  22        struct perf_cpu_map *map;
  23        int i;
  24
  25        data = &map_event->data;
  26
  27        TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__MASK);
  28
  29        mask = (struct perf_record_record_cpu_map *)data->data;
  30
  31        TEST_ASSERT_VAL("wrong nr",   mask->nr == 1);
  32
  33        for (i = 0; i < 20; i++) {
  34                TEST_ASSERT_VAL("wrong cpu", test_bit(i, mask->mask));
  35        }
  36
  37        map = cpu_map__new_data(data);
  38        TEST_ASSERT_VAL("wrong nr",  map->nr == 20);
  39
  40        for (i = 0; i < 20; i++) {
  41                TEST_ASSERT_VAL("wrong cpu", map->map[i] == i);
  42        }
  43
  44        perf_cpu_map__put(map);
  45        return 0;
  46}
  47
  48static int process_event_cpus(struct perf_tool *tool __maybe_unused,
  49                         union perf_event *event,
  50                         struct perf_sample *sample __maybe_unused,
  51                         struct machine *machine __maybe_unused)
  52{
  53        struct perf_record_cpu_map *map_event = &event->cpu_map;
  54        struct cpu_map_entries *cpus;
  55        struct perf_record_cpu_map_data *data;
  56        struct perf_cpu_map *map;
  57
  58        data = &map_event->data;
  59
  60        TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__CPUS);
  61
  62        cpus = (struct cpu_map_entries *)data->data;
  63
  64        TEST_ASSERT_VAL("wrong nr",   cpus->nr == 2);
  65        TEST_ASSERT_VAL("wrong cpu",  cpus->cpu[0] == 1);
  66        TEST_ASSERT_VAL("wrong cpu",  cpus->cpu[1] == 256);
  67
  68        map = cpu_map__new_data(data);
  69        TEST_ASSERT_VAL("wrong nr",  map->nr == 2);
  70        TEST_ASSERT_VAL("wrong cpu", map->map[0] == 1);
  71        TEST_ASSERT_VAL("wrong cpu", map->map[1] == 256);
  72        TEST_ASSERT_VAL("wrong refcnt", refcount_read(&map->refcnt) == 1);
  73        perf_cpu_map__put(map);
  74        return 0;
  75}
  76
  77
  78int test__cpu_map_synthesize(struct test *test __maybe_unused, int subtest __maybe_unused)
  79{
  80        struct perf_cpu_map *cpus;
  81
  82        /* This one is better stores in mask. */
  83        cpus = perf_cpu_map__new("0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19");
  84
  85        TEST_ASSERT_VAL("failed to synthesize map",
  86                !perf_event__synthesize_cpu_map(NULL, cpus, process_event_mask, NULL));
  87
  88        perf_cpu_map__put(cpus);
  89
  90        /* This one is better stores in cpu values. */
  91        cpus = perf_cpu_map__new("1,256");
  92
  93        TEST_ASSERT_VAL("failed to synthesize map",
  94                !perf_event__synthesize_cpu_map(NULL, cpus, process_event_cpus, NULL));
  95
  96        perf_cpu_map__put(cpus);
  97        return 0;
  98}
  99
 100static int cpu_map_print(const char *str)
 101{
 102        struct perf_cpu_map *map = perf_cpu_map__new(str);
 103        char buf[100];
 104
 105        if (!map)
 106                return -1;
 107
 108        cpu_map__snprint(map, buf, sizeof(buf));
 109        return !strcmp(buf, str);
 110}
 111
 112int test__cpu_map_print(struct test *test __maybe_unused, int subtest __maybe_unused)
 113{
 114        TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1"));
 115        TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,5"));
 116        TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3,5,7,9,11,13,15,17,19,21-40"));
 117        TEST_ASSERT_VAL("failed to convert map", cpu_map_print("2-5"));
 118        TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37"));
 119        TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37"));
 120        TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1-10,12-20,22-30,32-40"));
 121        return 0;
 122}
 123
 124int test__cpu_map_merge(struct test *test __maybe_unused, int subtest __maybe_unused)
 125{
 126        struct perf_cpu_map *a = perf_cpu_map__new("4,2,1");
 127        struct perf_cpu_map *b = perf_cpu_map__new("4,5,7");
 128        struct perf_cpu_map *c = perf_cpu_map__merge(a, b);
 129        char buf[100];
 130
 131        TEST_ASSERT_VAL("failed to merge map: bad nr", c->nr == 5);
 132        cpu_map__snprint(c, buf, sizeof(buf));
 133        TEST_ASSERT_VAL("failed to merge map: bad result", !strcmp(buf, "1-2,4-5,7"));
 134        perf_cpu_map__put(a);
 135        perf_cpu_map__put(b);
 136        perf_cpu_map__put(c);
 137        return 0;
 138}
 139