perf/tests/mem.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 #include "util/map_symbol.h"
0003 #include "util/mem-events.h"
0004 #include "util/symbol.h"
0005 #include "linux/perf_event.h"
0006 #include "util/debug.h"
0007 #include "tests.h"
0008 #include <string.h>
0009
0010 static int check(union perf_mem_data_src data_src,
0011           const char *string)
0012 {
0013     char out[100];
0014     char failure[100];
0015     struct mem_info mi = { .data_src = data_src };
0016
0017     int n;
0018
0019     n = perf_mem__snp_scnprintf(out, sizeof out, &mi);
0020     n += perf_mem__lvl_scnprintf(out + n, sizeof out - n, &mi);
0021     scnprintf(failure, sizeof failure, "unexpected %s", out);
0022     TEST_ASSERT_VAL(failure, !strcmp(string, out));
0023     return 0;
0024 }
0025
0026 static int test__mem(struct test_suite *text __maybe_unused, int subtest __maybe_unused)
0027 {
0028     int ret = 0;
0029     union perf_mem_data_src src;
0030
0031     memset(&src, 0, sizeof(src));
0032
0033     src.mem_lvl = PERF_MEM_LVL_HIT;
0034     src.mem_lvl_num = 4;
0035
0036     ret |= check(src, "N/AL4 hit");
0037
0038     src.mem_remote = 1;
0039
0040     ret |= check(src, "N/ARemote L4 hit");
0041
0042     src.mem_lvl = PERF_MEM_LVL_MISS;
0043     src.mem_lvl_num = PERF_MEM_LVLNUM_PMEM;
0044     src.mem_remote = 0;
0045
0046     ret |= check(src, "N/APMEM miss");
0047
0048     src.mem_remote = 1;
0049
0050     ret |= check(src, "N/ARemote PMEM miss");
0051
0052     src.mem_snoopx = PERF_MEM_SNOOPX_FWD;
0053     src.mem_lvl_num = PERF_MEM_LVLNUM_RAM;
0054
0055     ret |= check(src , "FwdRemote RAM miss");
0056
0057     return ret;
0058 }
0059
0060 DEFINE_SUITE("Test data source output", mem);