linux-kernel - [PATCH v4 2/5] selftests/mm: mark all functions static in split_huge_page

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Message-ID: <20250815023915.1394655-3-ziy@nvidia.com>
Date: Thu, 14 Aug 2025 22:39:11 -0400
From: Zi Yan <ziy@...dia.com>
To: Wei Yang <richard.weiyang@...il.com>,
	wang lian <lianux.mm@...il.com>,
	Baolin Wang <baolin.wang@...ux.alibaba.com>,
	David Hildenbrand <david@...hat.com>,
	linux-mm@...ck.org
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	Zi Yan <ziy@...dia.com>,
	"Liam R. Howlett" <Liam.Howlett@...cle.com>,
	Nico Pache <npache@...hat.com>,
	Ryan Roberts <ryan.roberts@....com>,
	Dev Jain <dev.jain@....com>,
	Barry Song <baohua@...nel.org>,
	Vlastimil Babka <vbabka@...e.cz>,
	Mike Rapoport <rppt@...nel.org>,
	Suren Baghdasaryan <surenb@...gle.com>,
	Michal Hocko <mhocko@...e.com>,
	Shuah Khan <shuah@...nel.org>,
	linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org
Subject: [PATCH v4 2/5] selftests/mm: mark all functions static in split_huge_page_test.c

All functions are only used within the file.

Signed-off-by: Zi Yan <ziy@...dia.com>
---
 .../selftests/mm/split_huge_page_test.c       | 22 +++++++++----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/tools/testing/selftests/mm/split_huge_page_test.c b/tools/testing/selftests/mm/split_huge_page_test.c
index 5d07b0b89226..89d3dc08fe4c 100644
--- a/tools/testing/selftests/mm/split_huge_page_test.c
+++ b/tools/testing/selftests/mm/split_huge_page_test.c
@@ -38,7 +38,7 @@ uint64_t pmd_pagesize;
 #define KPF_THP      (1UL<<22)
 #define GET_ORDER(nr_pages)    (31 - __builtin_clz(nr_pages))
 
-int is_backed_by_thp(char *vaddr, int pagemap_file, int kpageflags_file)
+static int is_backed_by_thp(char *vaddr, int pagemap_file, int kpageflags_file)
 {
 	uint64_t paddr;
 	uint64_t page_flags;
@@ -136,7 +136,7 @@ static void verify_rss_anon_split_huge_page_all_zeroes(char *one_page, int nr_hp
 		       rss_anon_before, rss_anon_after);
 }
 
-void split_pmd_zero_pages(void)
+static void split_pmd_zero_pages(void)
 {
 	char *one_page;
 	int nr_hpages = 4;
@@ -148,7 +148,7 @@ void split_pmd_zero_pages(void)
 	free(one_page);
 }
 
-void split_pmd_thp_to_order(int order)
+static void split_pmd_thp_to_order(int order)
 {
 	char *one_page;
 	size_t len = 4 * pmd_pagesize;
@@ -182,7 +182,7 @@ void split_pmd_thp_to_order(int order)
 	free(one_page);
 }
 
-void split_pte_mapped_thp(void)
+static void split_pte_mapped_thp(void)
 {
 	char *one_page, *pte_mapped, *pte_mapped2;
 	size_t len = 4 * pmd_pagesize;
@@ -265,7 +265,7 @@ void split_pte_mapped_thp(void)
 	close(kpageflags_fd);
 }
 
-void split_file_backed_thp(int order)
+static void split_file_backed_thp(int order)
 {
 	int status;
 	int fd;
@@ -365,7 +365,7 @@ void split_file_backed_thp(int order)
 	ksft_exit_fail_msg("Error occurred\n");
 }
 
-bool prepare_thp_fs(const char *xfs_path, char *thp_fs_template,
+static bool prepare_thp_fs(const char *xfs_path, char *thp_fs_template,
 		const char **thp_fs_loc)
 {
 	if (xfs_path) {
@@ -381,7 +381,7 @@ bool prepare_thp_fs(const char *xfs_path, char *thp_fs_template,
 	return true;
 }
 
-void cleanup_thp_fs(const char *thp_fs_loc, bool created_tmp)
+static void cleanup_thp_fs(const char *thp_fs_loc, bool created_tmp)
 {
 	int status;
 
@@ -394,8 +394,8 @@ void cleanup_thp_fs(const char *thp_fs_loc, bool created_tmp)
 				   strerror(errno));
 }
 
-int create_pagecache_thp_and_fd(const char *testfile, size_t fd_size, int *fd,
-		char **addr)
+static int create_pagecache_thp_and_fd(const char *testfile, size_t fd_size,
+		int *fd, char **addr)
 {
 	size_t i;
 	unsigned char buf[1024];
@@ -461,8 +461,8 @@ int create_pagecache_thp_and_fd(const char *testfile, size_t fd_size, int *fd,
 	return -1;
 }
 
-void split_thp_in_pagecache_to_order_at(size_t fd_size, const char *fs_loc,
-		int order, int offset)
+static void split_thp_in_pagecache_to_order_at(size_t fd_size,
+		const char *fs_loc, int order, int offset)
 {
 	int fd;
 	char *addr;
-- 
2.50.1