mem.c

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#include "util/mem-events.h"
#include "util/symbol.h"
#include "linux/perf_event.h"
#include "util/debug.h"
#include "tests.h"
#include <string.h>

static int check(union perf_mem_data_src data_src,
          const char *string)
{
    char out[100];
    char failure[100];
    struct mem_info mi = { .data_src = data_src };

    int n;

    n = perf_mem__snp_scnprintf(out, sizeof out, &mi);
    n += perf_mem__lvl_scnprintf(out + n, sizeof out - n, &mi);
    scnprintf(failure, sizeof failure, "unexpected %s", out);
    TEST_ASSERT_VAL(failure, !strcmp(string, out));
    return 0;
}

int test__mem(struct test *text __maybe_unused, int subtest __maybe_unused)
{
    int ret = 0;
    union perf_mem_data_src src;

    memset(&src, 0, sizeof(src));

    src.mem_lvl = PERF_MEM_LVL_HIT;
    src.mem_lvl_num = 4;

    ret |= check(src, "N/AL4 hit");

    src.mem_remote = 1;

    ret |= check(src, "N/ARemote L4 hit");

    src.mem_lvl = PERF_MEM_LVL_MISS;
    src.mem_lvl_num = PERF_MEM_LVLNUM_PMEM;
    src.mem_remote = 0;

    ret |= check(src, "N/APMEM miss");

    src.mem_remote = 1;

    ret |= check(src, "N/ARemote PMEM miss");

    src.mem_snoopx = PERF_MEM_SNOOPX_FWD;
    src.mem_lvl_num = PERF_MEM_LVLNUM_RAM;

    ret |= check(src , "FwdRemote RAM miss");

    return ret;
}