diff options
Diffstat (limited to 'tools/testing/selftests/mm/cow.c')
| -rw-r--r-- | tools/testing/selftests/mm/cow.c | 27 |
1 files changed, 1 insertions, 26 deletions
diff --git a/tools/testing/selftests/mm/cow.c b/tools/testing/selftests/mm/cow.c index 29767e2afdd0..788e82b00b75 100644 --- a/tools/testing/selftests/mm/cow.c +++ b/tools/testing/selftests/mm/cow.c @@ -72,31 +72,6 @@ static int detect_thp_sizes(size_t sizes[], int max) return count; } -static void detect_huge_zeropage(void) -{ - int fd = open("/sys/kernel/mm/transparent_hugepage/use_zero_page", - O_RDONLY); - size_t enabled = 0; - char buf[15]; - int ret; - - if (fd < 0) - return; - - ret = pread(fd, buf, sizeof(buf), 0); - if (ret > 0 && ret < sizeof(buf)) { - buf[ret] = 0; - - enabled = strtoul(buf, NULL, 10); - if (enabled == 1) { - has_huge_zeropage = true; - ksft_print_msg("[INFO] huge zeropage is enabled\n"); - } - } - - close(fd); -} - static bool range_is_swapped(void *addr, size_t size) { for (; size; addr += pagesize, size -= pagesize) @@ -1903,7 +1878,7 @@ int main(int argc, char **argv) } nr_hugetlbsizes = detect_hugetlb_page_sizes(hugetlbsizes, ARRAY_SIZE(hugetlbsizes)); - detect_huge_zeropage(); + has_huge_zeropage = detect_huge_zeropage(); ksft_set_plan(ARRAY_SIZE(anon_test_cases) * tests_per_anon_test_case() + ARRAY_SIZE(anon_thp_test_cases) * tests_per_anon_thp_test_case() + |