From: Eliav Farber <farbere@amazon•com>
To: <gregkh@linuxfoundation•org>, <jdike@addtoit•com>,
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Subject: [PATCH 03/19 5.15.y] minmax: deduplicate __unconst_integer_typeof()
Date: Thu, 2 Oct 2025 20:47:17 +0000 [thread overview]
Message-ID: <20251002204733.35652-4-farbere@amazon.com> (raw)
In-Reply-To: <20251002204733.35652-1-farbere@amazon.com>
From: Andy Shevchenko <andriy.shevchenko@linux•intel.com>
[ Upstream commit 5e57418a2031cd5e1863efdf3d7447a16a368172 ]
It appears that compiler_types.h already have an implementation of the
__unconst_integer_typeof() called __unqual_scalar_typeof(). Use it
instead of the copy.
Link: https://lkml.kernel.org/r/20230911154913.4176033-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux•intel.com>
Acked-by: Herve Codina <herve.codina@bootlin•com>
Signed-off-by: Andrew Morton <akpm@linux-foundation•org>
Signed-off-by: Eliav Farber <farbere@amazon•com>
---
include/linux/minmax.h | 25 ++-----------------------
1 file changed, 2 insertions(+), 23 deletions(-)
diff --git a/include/linux/minmax.h b/include/linux/minmax.h
index aac0b7d23768..62b0c0a3cf30 100644
--- a/include/linux/minmax.h
+++ b/include/linux/minmax.h
@@ -168,27 +168,6 @@
*/
#define max_t(type, x, y) __careful_cmp(max, (type)(x), (type)(y))
-/*
- * Remove a const qualifier from integer types
- * _Generic(foo, type-name: association, ..., default: association) performs a
- * comparison against the foo type (not the qualified type).
- * Do not use the const keyword in the type-name as it will not match the
- * unqualified type of foo.
- */
-#define __unconst_integer_type_cases(type) \
- unsigned type: (unsigned type)0, \
- signed type: (signed type)0
-
-#define __unconst_integer_typeof(x) typeof( \
- _Generic((x), \
- char: (char)0, \
- __unconst_integer_type_cases(char), \
- __unconst_integer_type_cases(short), \
- __unconst_integer_type_cases(int), \
- __unconst_integer_type_cases(long), \
- __unconst_integer_type_cases(long long), \
- default: (x)))
-
/*
* Do not check the array parameter using __must_be_array().
* In the following legit use-case where the "array" passed is a simple pointer,
@@ -203,13 +182,13 @@
* 'int *buff' and 'int buff[N]' types.
*
* The array can be an array of const items.
- * typeof() keeps the const qualifier. Use __unconst_integer_typeof() in order
+ * typeof() keeps the const qualifier. Use __unqual_scalar_typeof() in order
* to discard the const qualifier for the __element variable.
*/
#define __minmax_array(op, array, len) ({ \
typeof(&(array)[0]) __array = (array); \
typeof(len) __len = (len); \
- __unconst_integer_typeof(__array[0]) __element = __array[--__len]; \
+ __unqual_scalar_typeof(__array[0]) __element = __array[--__len];\
while (__len--) \
__element = op(__element, __array[__len]); \
__element; })
--
2.47.3
next prev parent reply other threads:[~2025-10-02 20:49 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-02 20:47 [PATCH 00/19 5.15.y] Backport minmax.h updates from v6.17-rc7 Eliav Farber
2025-10-02 20:47 ` [PATCH 01/19 5.15.y] minmax: add in_range() macro Eliav Farber
2025-10-02 20:47 ` [PATCH 02/19 5.15.y] minmax: Introduce {min,max}_array() Eliav Farber
2025-10-02 20:47 ` Eliav Farber [this message]
2025-10-02 20:47 ` [PATCH 04/19 5.15.y] minmax: fix indentation of __cmp_once() and __clamp_once() Eliav Farber
2025-10-02 20:47 ` [PATCH 05/19 5.15.y] minmax: avoid overly complicated constant expressions in VM code Eliav Farber
2025-10-02 20:47 ` [PATCH 06/19 5.15.y] minmax: make generic MIN() and MAX() macros available everywhere Eliav Farber
2025-10-02 20:47 ` [PATCH 07/19 5.15.y] minmax: add a few more MIN_T/MAX_T users Eliav Farber
2025-10-02 20:47 ` [PATCH 08/19 5.15.y] minmax: simplify and clarify min_t()/max_t() implementation Eliav Farber
2025-10-02 20:47 ` [PATCH 09/19 5.15.y] minmax: simplify min()/max()/clamp() implementation Eliav Farber
2025-10-02 20:47 ` [PATCH 10/19 5.15.y] minmax: don't use max() in situations that want a C constant expression Eliav Farber
2025-10-02 20:47 ` [PATCH 11/19 5.15.y] minmax: improve macro expansion and type checking Eliav Farber
2025-10-02 20:47 ` [PATCH 12/19 5.15.y] minmax: fix up min3() and max3() too Eliav Farber
2025-10-02 20:47 ` [PATCH 13/19 5.15.y] minmax.h: add whitespace around operators and after commas Eliav Farber
2025-10-02 20:47 ` [PATCH 14/19 5.15.y] minmax.h: update some comments Eliav Farber
2025-10-02 20:47 ` [PATCH 15/19 5.15.y] minmax.h: reduce the #define expansion of min(), max() and clamp() Eliav Farber
2025-10-02 20:47 ` [PATCH 16/19 5.15.y] minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() Eliav Farber
2025-10-02 20:47 ` [PATCH 17/19 5.15.y] minmax.h: move all the clamp() definitions after the min/max() ones Eliav Farber
2025-10-02 20:47 ` [PATCH 18/19 5.15.y] minmax.h: simplify the variants of clamp() Eliav Farber
2025-10-02 20:47 ` [PATCH 19/19 5.15.y] minmax.h: remove some #defines that are only expanded once Eliav Farber
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