linux-kernel - [PATCH 07/10] overflow: replace __is_constexpr() by is

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Message-Id: <20241203-is_constexpr-refactor-v1-7-4e4cbaecc216@wanadoo.fr>
Date: Tue, 03 Dec 2024 02:33:29 +0900
From: Vincent Mailhol via B4 Relay <devnull+mailhol.vincent.wanadoo.fr@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>, 
 David Laight <David.Laight@...lab.com>, 
 Luc Van Oostenryck <luc.vanoostenryck@...il.com>, 
 Nathan Chancellor <nathan@...nel.org>, 
 Nick Desaulniers <ndesaulniers@...gle.com>, 
 Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, 
 Yury Norov <yury.norov@...il.com>, 
 Rasmus Villemoes <linux@...musvillemoes.dk>, Kees Cook <kees@...nel.org>, 
 "Gustavo A. R. Silva" <gustavoars@...nel.org>, 
 Jani Nikula <jani.nikula@...ux.intel.com>, 
 Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>, 
 Rodrigo Vivi <rodrigo.vivi@...el.com>, 
 Tvrtko Ursulin <tursulin@...ulin.net>, David Airlie <airlied@...il.com>, 
 Simona Vetter <simona@...ll.ch>, Suzuki K Poulose <suzuki.poulose@....com>, 
 Mike Leach <mike.leach@...aro.org>, James Clark <james.clark@...aro.org>, 
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>, 
 Rikard Falkeborn <rikard.falkeborn@...il.com>, 
 Martin Uecker <Martin.Uecker@....uni-goettingen.de>
Cc: linux-sparse@...r.kernel.org, linux-kernel@...r.kernel.org, 
 llvm@...ts.linux.dev, linux-hardening@...r.kernel.org, 
 intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org, 
 coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org, 
 Vincent Mailhol <mailhol.vincent@...adoo.fr>
Subject: [PATCH 07/10] overflow: replace __is_constexpr() by is_const()

From: Vincent Mailhol <mailhol.vincent@...adoo.fr>

is_const() is a one to one replacement of __is_constexpr(). Do the
replacement so that __is_constexpr() can be removed.

Signed-off-by: Vincent Mailhol <mailhol.vincent@...adoo.fr>
---
 include/linux/overflow.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/linux/overflow.h b/include/linux/overflow.h
index 0c7e3dcfe8670cb95f371a6f7d41bb8b63b1786c..d69361a3128897d493b5e2ec471f077ca2b9861d 100644
--- a/include/linux/overflow.h
+++ b/include/linux/overflow.h
@@ -234,7 +234,7 @@ static inline bool __must_check __must_check_overflow(bool overflow)
  * Returns: true if overflow can occur, false otherwise.
  */
 #define overflows_type(n, T)					\
-	__builtin_choose_expr(__is_constexpr(n),		\
+	__builtin_choose_expr(is_const(n),			\
 			      __overflows_type_constexpr(n, T),	\
 			      __overflows_type(n, T))

@@ -250,7 +250,7 @@ static inline bool __must_check __must_check_overflow(bool overflow)
  * back to __same_type().
  */
 #define castable_to_type(n, T)						\
-	__builtin_choose_expr(__is_constexpr(n),			\
+	__builtin_choose_expr(is_const(n),				\
 			      !__overflows_type_constexpr(n, T),	\
 			      __same_type(n, T))

@@ -352,7 +352,7 @@ static inline size_t __must_check size_sub(size_t minuend, size_t subtrahend)
  * Return: number of bytes needed or SIZE_MAX on overflow.
  */
 #define flex_array_size(p, member, count)				\
-	__builtin_choose_expr(__is_constexpr(count),			\
+	__builtin_choose_expr(is_const(count),				\
 		(count) * sizeof(*(p)->member) + __must_be_array((p)->member),	\
 		size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))

@@ -368,7 +368,7 @@ static inline size_t __must_check size_sub(size_t minuend, size_t subtrahend)
  * Return: number of bytes needed or SIZE_MAX on overflow.
  */
 #define struct_size(p, member, count)					\
-	__builtin_choose_expr(__is_constexpr(count),			\
+	__builtin_choose_expr(is_const(count),				\
 		sizeof(*(p)) + flex_array_size(p, member, count),	\
 		size_add(sizeof(*(p)), flex_array_size(p, member, count)))

-- 
2.45.2