tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
9static 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
25int 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}