[PATCH] selftests/mm: khugepaged: consolidate error exits via kselftest helpers

[Hongfu Li]

From: Hongfu Li <lihon...@kylinos.cn>

Replace the perror()+exit(EXIT_FAILURE) pattern with
ksft_exit_fail_perror() so failures are reported through the
kselftest framework, consistent with the rest of the file.

Signed-off-by: Hongfu Li <lihon...@kylinos.cn>
---
 tools/testing/selftests/mm/khugepaged.c | 20 +++++++-------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/tools/testing/selftests/mm/khugepaged.c 
b/tools/testing/selftests/mm/khugepaged.c
index 0d6c71ed2fae..8d1b87f2195c 100644
--- a/tools/testing/selftests/mm/khugepaged.c
+++ b/tools/testing/selftests/mm/khugepaged.c
@@ -358,21 +358,15 @@ static void *file_setup_area_common(int nr_hpages, enum 
file_setup_ops setup)
                ksft_exit_fail_perror("open()");
 
        size = nr_hpages * hpage_pmd_size;
-       if (ftruncate(fd, size)) {
-               perror("ftruncate()");
-               exit(EXIT_FAILURE);
-       }
+       if (ftruncate(fd, size))
+               ksft_exit_fail_perror("ftruncate()");
        p = mmap(BASE_ADDR, size, PROT_READ | PROT_WRITE,
                MAP_SHARED, fd, 0);
-       if (p != BASE_ADDR) {
-               perror("mmap()");
-               exit(EXIT_FAILURE);
-       }
+       if (p != BASE_ADDR)
+               ksft_exit_fail_perror("mmap()");
        fill_memory(p, 0, size);
-       if (msync(p, size, MS_SYNC)) {
-               perror("msync()");
-               exit(EXIT_FAILURE);
-       }
+       if (msync(p, size, MS_SYNC))
+               ksft_exit_fail_perror("msync()");
        close(fd);
        munmap(p, size);
        success("OK");
@@ -447,7 +441,7 @@ static bool file_check_huge(void *addr, size_t len, int 
nr_hpages,
        case VMA_SHMEM:
                return check_huge_shmem(addr, len, nr_hpages, hpage_size);
        default:
-               exit(EXIT_FAILURE);
+               ksft_exit_fail_msg("Unknown VMA type\n");
                return false;
        }
 }
-- 
2.54.0