1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2019 Li Wang <[email protected]>
4 */
5
6 /*
7 * Tests .hugepages + .save_restore
8 */
9
10 #include "tst_test.h"
11 #include "tst_hugepage.h"
12 #include "tst_sys_conf.h"
13
do_test(void)14 static void do_test(void) {
15
16 unsigned long val, hpages;
17
18 tst_res(TINFO, "tst_hugepages = %lu", tst_hugepages);
19 SAFE_FILE_PRINTF("/proc/sys/kernel/numa_balancing", "1");
20
21 hpages = test.hugepages.number;
22 SAFE_FILE_SCANF(PATH_NR_HPAGES, "%lu", &val);
23 if (val != hpages)
24 tst_brk(TBROK, "nr_hugepages = %lu, but expect %lu", val, hpages);
25 else
26 tst_res(TPASS, "test .hugepges");
27
28 struct tst_hugepage hp = { 1000000000000, TST_REQUEST };
29 hpages = tst_reserve_hugepages(&hp);
30
31 SAFE_FILE_SCANF(PATH_NR_HPAGES, "%lu", &val);
32 if (val != hpages)
33 tst_brk(TBROK, "nr_hugepages = %lu, but expect %lu", val, hpages);
34 else
35 tst_res(TPASS, "tst_reserve_hugepages");
36 }
37
38 static struct tst_test test = {
39 .test_all = do_test,
40 .hugepages = {2, TST_NEEDS},
41 .save_restore = (const struct tst_path_val[]) {
42 {"/proc/sys/kernel/numa_balancing", "0", TST_SR_TBROK},
43 {}
44 },
45 };
46