tools/perf/tests/mem.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include "util/map_symbol.h"
   3 #include "util/mem-events.h"
   4 #include "util/mem-info.h"
   5 #include "util/symbol.h"
   6 #include "linux/perf_event.h"
   7 #include "util/debug.h"
   8 #include "tests.h"
   9 #include <string.h>
  10
  11 static int check(union perf_mem_data_src data_src,
  12                   const char *string)
  13 {
  14         char out[100];
  15         char failure[100];
  16         struct mem_info *mi = mem_info__new();
  17         int n;
  18
  19         TEST_ASSERT_VAL("Memory allocation failed", mi);
  20         *mem_info__data_src(mi) = data_src;
  21         n = perf_mem__snp_scnprintf(out, sizeof out, mi);
  22         n += perf_mem__lvl_scnprintf(out + n, sizeof out - n, mi);
  23         mem_info__put(mi);
  24         scnprintf(failure, sizeof failure, "unexpected %s", out);
  25         TEST_ASSERT_VAL(failure, !strcmp(string, out));
  26         return 0;
  27 }
  28
  29 static int test__mem(struct test_suite *text __maybe_unused, int subtest __maybe_unused)
  30 {
  31         int ret = 0;
  32         union perf_mem_data_src src;
  33
  34         memset(&src, 0, sizeof(src));
  35
  36         src.mem_lvl = PERF_MEM_LVL_HIT;
  37         src.mem_lvl_num = 4;
  38
  39         ret |= check(src, "N/AL4 hit");
  40
  41         src.mem_remote = 1;
  42
  43         ret |= check(src, "N/ARemote L4 hit");
  44
  45         src.mem_lvl = PERF_MEM_LVL_MISS;
  46         src.mem_lvl_num = PERF_MEM_LVLNUM_PMEM;
  47         src.mem_remote = 0;
  48
  49         ret |= check(src, "N/APMEM miss");
  50
  51         src.mem_remote = 1;
  52
  53         ret |= check(src, "N/ARemote PMEM miss");
  54
  55         src.mem_snoopx = PERF_MEM_SNOOPX_FWD;
  56         src.mem_lvl_num = PERF_MEM_LVLNUM_RAM;
  57
  58         ret |= check(src , "FwdRemote RAM miss");
  59
  60         return ret;
  61 }
  62
  63 DEFINE_SUITE("Test data source output", mem);