tools/perf/tests/mem.c

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