[PATCH 08/53] selftests/mm: hugetlb-vmemmap: use kselftest framework

Mike Rapoport
2026-04-06T14:18:36Z

Convert hugetlb-vmemmap test to use kselftest framework for reporting
and tracking successful and failing runs.

Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
---
tools/testing/selftests/mm/hugetlb-vmemmap.c | 42 +++++++++-----------
1 file changed, 18 insertions(+), 24 deletions(-)

diff --git a/tools/testing/selftests/mm/hugetlb-vmemmap.c b/tools/testing/selftests/mm/hugetlb-vmemmap.c
index df366a4d1b92..485a6978b40f 100644
--- a/tools/testing/selftests/mm/hugetlb-vmemmap.c
+++ b/tools/testing/selftests/mm/hugetlb-vmemmap.c
@@ -63,7 +63,7 @@ static int check_page_flags(unsigned long pfn)
read(fd, &pageflags, sizeof(pageflags));
if ((pageflags & HEAD_PAGE_FLAGS) != HEAD_PAGE_FLAGS) {
close(fd);
- printf("Head page flags (%lx) is invalid\n", pageflags);
+ ksft_print_msg("Head page flags (%lx) is invalid\n", pageflags);
return -1;
}

@@ -77,7 +77,7 @@ static int check_page_flags(unsigned long pfn)
if ((pageflags & TAIL_PAGE_FLAGS) != TAIL_PAGE_FLAGS ||
(pageflags & HEAD_PAGE_FLAGS) == HEAD_PAGE_FLAGS) {
close(fd);
- printf("Tail page flags (%lx) is invalid\n", pageflags);
+ ksft_print_msg("Tail page flags (%lx) is invalid\n", pageflags);
return -1;
}
}
@@ -91,44 +91,38 @@ int main(int argc, char **argv)
{
void *addr;
unsigned long pfn;
+ int ret;
+
+ ksft_print_header();
+ ksft_set_plan(1);

pagesize = psize();
maplength = default_huge_page_size();
- if (!maplength) {
- printf("Unable to determine huge page size\n");
- exit(1);
- }
+ if (!maplength)
+ ksft_exit_skip("Unable to determine huge page size\n");

addr = mmap(NULL, maplength, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, -1, 0);
- if (addr == MAP_FAILED) {
- perror("mmap");
- exit(1);
- }
+ if (addr == MAP_FAILED)
+ ksft_exit_fail_perror("mmap");

/* Trigger allocation of HugeTLB page. */
write_bytes(addr, maplength);

pfn = virt_to_pfn(addr);
if (pfn == -1UL) {
+ ksft_perror("virt_to_pfn");
munmap(addr, maplength);
- perror("virt_to_pfn");
- exit(1);
+ ksft_exit_fail();
}

- printf("Returned address is %p whose pfn is %lx\n", addr, pfn);
+ ksft_print_msg("Returned address is %p whose pfn is %lx\n", addr, pfn);

- if (check_page_flags(pfn) < 0) {
- munmap(addr, maplength);
- perror("check_page_flags");
- exit(1);
- }
+ ret = check_page_flags(pfn);

- /* munmap() length of MAP_HUGETLB memory must be hugepage aligned */
- if (munmap(addr, maplength)) {
- perror("munmap");
- exit(1);
- }
+ if (munmap(addr, maplength))
+ ksft_exit_fail_perror("munmap");

- return 0;
+ ksft_test_result(!ret, "HugeTLB vmemmap page flags\n");
+ ksft_finished();
}
--
2.53.0