[PATCH] selftests/mm: fix split_huge_page_test for folio_split() tests.

[Zi Yan]

PID_FMT does not have an offset field, so folio_split() tests are not
performed. Add PID_FMT_OFFSET with an offset field and use it to perform
folio_split() tests.

Fixes: 80a5c494c89f ("selftests/mm: add tests for folio_split(), buddy 
allocator like split")
Signed-off-by: Zi Yan <z...@nvidia.com>
---
 tools/testing/selftests/mm/split_huge_page_test.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/mm/split_huge_page_test.c 
b/tools/testing/selftests/mm/split_huge_page_test.c
index aa7400ed0e99..f0d9c035641d 100644
--- a/tools/testing/selftests/mm/split_huge_page_test.c
+++ b/tools/testing/selftests/mm/split_huge_page_test.c
@@ -31,6 +31,7 @@ uint64_t pmd_pagesize;
 #define INPUT_MAX 80
 
 #define PID_FMT "%d,0x%lx,0x%lx,%d"
+#define PID_FMT_OFFSET "%d,0x%lx,0x%lx,%d,%d"
 #define PATH_FMT "%s,0x%lx,0x%lx,%d"
 
 #define PFN_MASK     ((1UL<<55)-1)
@@ -483,7 +484,7 @@ void split_thp_in_pagecache_to_order_at(size_t fd_size, 
const char *fs_loc,
                write_debugfs(PID_FMT, getpid(), (uint64_t)addr,
                              (uint64_t)addr + fd_size, order);
        else
-               write_debugfs(PID_FMT, getpid(), (uint64_t)addr,
+               write_debugfs(PID_FMT_OFFSET, getpid(), (uint64_t)addr,
                              (uint64_t)addr + fd_size, order, offset);
 
        for (i = 0; i < fd_size; i++)
-- 
2.47.2