root/tools/perf/tests/mem2node.c

DEFINITIONS

1. get_bitmap
2. test__mem2node

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/compiler.h>
   3 #include <linux/bitmap.h>
   4 #include <linux/kernel.h>
   5 #include <linux/zalloc.h>
   6 #include <perf/cpumap.h>
   7 #include <internal/cpumap.h>
   8 #include "debug.h"
   9 #include "env.h"
  10 #include "mem2node.h"
  11 #include "tests.h"
  12 
  13 static struct node {
  14         int              node;
  15         const char      *map;
  16 } test_nodes[] = {
  17         { .node = 0, .map = "0"     },
  18         { .node = 1, .map = "1-2"   },
  19         { .node = 3, .map = "5-7,9" },
  20 };
  21 
  22 #define T TEST_ASSERT_VAL
  23 
  24 static unsigned long *get_bitmap(const char *str, int nbits)
  25 {
  26         struct perf_cpu_map *map = perf_cpu_map__new(str);
  27         unsigned long *bm = NULL;
  28         int i;
  29 
  30         bm = bitmap_alloc(nbits);
  31 
  32         if (map && bm) {
  33                 for (i = 0; i < map->nr; i++) {
  34                         set_bit(map->map[i], bm);
  35                 }
  36         }
  37 
  38         if (map)
  39                 perf_cpu_map__put(map);
  40         else
  41                 free(bm);
  42 
  43         return bm && map ? bm : NULL;
  44 }
  45 
  46 int test__mem2node(struct test *t __maybe_unused, int subtest __maybe_unused)
  47 {
  48         struct mem2node map;
  49         struct memory_node nodes[3];
  50         struct perf_env env = {
  51                 .memory_nodes    = (struct memory_node *) &nodes[0],
  52                 .nr_memory_nodes = ARRAY_SIZE(nodes),
  53                 .memory_bsize    = 0x100,
  54         };
  55         unsigned int i;
  56 
  57         for (i = 0; i < ARRAY_SIZE(nodes); i++) {
  58                 nodes[i].node = test_nodes[i].node;
  59                 nodes[i].size = 10;
  60 
  61                 T("failed: alloc bitmap",
  62                   (nodes[i].set = get_bitmap(test_nodes[i].map, 10)));
  63         }
  64 
  65         T("failed: mem2node__init", !mem2node__init(&map, &env));
  66         T("failed: mem2node__node",  0 == mem2node__node(&map,   0x50));
  67         T("failed: mem2node__node",  1 == mem2node__node(&map,  0x100));
  68         T("failed: mem2node__node",  1 == mem2node__node(&map,  0x250));
  69         T("failed: mem2node__node",  3 == mem2node__node(&map,  0x500));
  70         T("failed: mem2node__node",  3 == mem2node__node(&map,  0x650));
  71         T("failed: mem2node__node", -1 == mem2node__node(&map,  0x450));
  72         T("failed: mem2node__node", -1 == mem2node__node(&map, 0x1050));
  73 
  74         for (i = 0; i < ARRAY_SIZE(nodes); i++)
  75                 zfree(&nodes[i].set);
  76 
  77         mem2node__exit(&map);
  78         return 0;
  79 }