tools/perf/tests/cpumap.c

   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
  12 struct machine;
  13
  14 static 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
  48 static 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
  78 int 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
 100 static 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
 112 int 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
 124 int 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(b);
 135         perf_cpu_map__put(c);
 136         return 0;
 137 }