From: Mike Rapoport (Microsoft) <rppt@kernel.org>
Date: Mon, 11 May 2026 16:27:53 +0000 (+0300)
Subject: selftests/mm: hugetlb-vmemmap: use kselftest framework
X-Git-Tag: v7.2-rc1~59^2~75
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=40e9e3d76069f4108877ad05a5cd171192a0b355;p=thirdparty%2Fkernel%2Flinux.git

selftests/mm: hugetlb-vmemmap: use kselftest framework

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

Link: https://lore.kernel.org/20260511162840.375890-10-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Donet Tom <donettom@linux.ibm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Sarthak Sharma <sarthak.sharma@arm.com>
Tested-by: Luiz Capitulino <luizcap@redhat.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Liam Howlett <liam@infradead.org>
Cc: Li Wang <li.wang@linux.dev>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/tools/testing/selftests/mm/hugetlb-vmemmap.c b/tools/testing/selftests/mm/hugetlb-vmemmap.c
index df366a4d1b92d..485a6978b40f7 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();
 }