[PATCH v2 35/53] selftests/mm: hugetlb_fault_after_madv: add setup of HugeTLB pages

Mike Rapoport
2026-04-18T10:59:23Z

hugetlb_fault_after_madv test skips testing if there are no free huge
pages prepared by a wrapper script.

Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.

Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
---
tools/testing/selftests/mm/hugetlb_fault_after_madv.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/mm/hugetlb_fault_after_madv.c b/tools/testing/selftests/mm/hugetlb_fault_after_madv.c
index c718dd065d53..481863cc5fda 100644
--- a/tools/testing/selftests/mm/hugetlb_fault_after_madv.c
+++ b/tools/testing/selftests/mm/hugetlb_fault_after_madv.c
@@ -54,7 +54,6 @@ void *madv(void *unused)

int main(void)
{
- unsigned long free_hugepages;
pthread_t thread1, thread2;
/*
* On kernel 6.4, we are able to reproduce the problem with ~1000
@@ -78,10 +77,9 @@ int main(void)
ksft_print_msg("[INFO] detected default hugetlb page size: %zu KiB\n",
huge_page_size / 1024);

- free_hugepages = hugetlb_free_default_pages();
- if (free_hugepages != 1) {
+ if (!hugetlb_setup_default(1)) {
ksft_exit_skip("This test needs one and only one page to execute. Got %lu\n",
- free_hugepages);
+ hugetlb_free_default_pages());
}

while (max--) {
--
2.53.0