linux-kernel - [PATCH] selftests/mm: use __auto

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Message-ID: <20250730142301.6754-1-pranav.tyagi03@gmail.com>
Date: Wed, 30 Jul 2025 19:53:01 +0530
From: Pranav Tyagi <pranav.tyagi03@...il.com>
To: akpm@...ux-foundation.org,
	peterx@...hat.com,
	shuah@...nel.org,
	linux-mm@...ck.org,
	linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: linux-kernel-mentees@...ts.linux.dev,
	Pranav Tyagi <pranav.tyagi03@...il.com>
Subject: [PATCH] selftests/mm: use __auto_type in swap() macro

Replace typeof() with __auto_type in the swap() macro in uffd-stress.c.
__auto_type was introduced in GCC 4.9 and reduces the compile time for
all compilers. No functional changes intended.

Signed-off-by: Pranav Tyagi <pranav.tyagi03@...il.com>
---
 tools/testing/selftests/mm/uffd-stress.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/mm/uffd-stress.c b/tools/testing/selftests/mm/uffd-stress.c
index 40af7f67c407..c0f64df5085c 100644
--- a/tools/testing/selftests/mm/uffd-stress.c
+++ b/tools/testing/selftests/mm/uffd-stress.c
@@ -51,7 +51,7 @@ static char *zeropage;
 pthread_attr_t attr;
 
 #define swap(a, b) \
-	do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
+	do { __auto_type __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
 
 const char *examples =
 	"# Run anonymous memory test on 100MiB region with 99999 bounces:\n"
-- 
2.49.0