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