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From: Yury Norov <yury.norov@gmail.com>
To: linux-m68k@lists.linux-m68k.org, linux-kernel@vger.kernel.org,
	linux-sh@vger.kernel.org, linux-arch@vger.kernel.org
Cc: Yury Norov <yury.norov@gmail.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Yoshinori Sato <ysato@users.sourceforge.jp>,
	Rich Felker <dalias@libc.org>, Arnd Bergmann <arnd@arndb.de>,
	Dennis Zhou <dennis@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Wolfram Sang <wsa+renesas@sang-engineering.com>,
	David Sterba <dsterba@suse.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Stefano Brivio <sbrivio@redhat.com>,
	"Ma, Jianpeng" <jianpeng.ma@intel.com>,
	Wei Yang <richard.weiyang@linux.alibaba.com>,
	Josh Poimboeuf <jpoimboe@redhat.com>,
	Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Subject: [PATCH 3/6] tools: sync bitops macro definitions with the kernel
Date: Wed, 20 Jan 2021 16:06:27 -0800	[thread overview]
Message-ID: <20210121000630.371883-4-yury.norov@gmail.com> (raw)
In-Reply-To: <20210121000630.371883-1-yury.norov@gmail.com>

Signed-off-by: Yury Norov <yury.norov@gmail.com>
---
 tools/include/linux/bitmap.h | 11 -----------
 tools/include/linux/bitops.h | 11 +++++++++++
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/tools/include/linux/bitmap.h b/tools/include/linux/bitmap.h
index 477a1cae513f..266a9291dd1f 100644
--- a/tools/include/linux/bitmap.h
+++ b/tools/include/linux/bitmap.h
@@ -19,17 +19,6 @@ int __bitmap_equal(const unsigned long *bitmap1,
 		   const unsigned long *bitmap2, unsigned int bits);
 void bitmap_clear(unsigned long *map, unsigned int start, int len);
 
-#define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1)))
-
-#define BITMAP_LAST_WORD_MASK(nbits)					\
-(									\
-	((nbits) % BITS_PER_LONG) ?					\
-		(1UL<<((nbits) % BITS_PER_LONG))-1 : ~0UL		\
-)
-
-#define small_const_nbits(nbits) \
-	(__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG)
-
 static inline void bitmap_zero(unsigned long *dst, int nbits)
 {
 	if (small_const_nbits(nbits))
diff --git a/tools/include/linux/bitops.h b/tools/include/linux/bitops.h
index 5fca38fe1ba8..1c70919cb216 100644
--- a/tools/include/linux/bitops.h
+++ b/tools/include/linux/bitops.h
@@ -14,6 +14,17 @@
 #include <linux/bits.h>
 #include <linux/compiler.h>
 
+#define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1)))
+#define BITMAP_LAST_WORD_MASK(nbits) (~0UL >> (-(nbits) & (BITS_PER_LONG - 1)))
+
+/*
+ * The static inlines below do not handle constant nbits==0 correctly,
+ * so make such users (should any ever turn up) call the out-of-line
+ * versions.
+ */
+#define small_const_nbits(nbits) \
+	(__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG && (nbits) > 0)
+
 #define BITS_PER_TYPE(type)	(sizeof(type) * BITS_PER_BYTE)
 #define BITS_TO_LONGS(nr)	DIV_ROUND_UP(nr, BITS_PER_TYPE(long))
 #define BITS_TO_U64(nr)		DIV_ROUND_UP(nr, BITS_PER_TYPE(u64))
-- 
2.25.1


  parent reply	other threads:[~2021-01-21  1:47 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-21  0:06 [PATCH 0/6] lib/find_bit: fast path for small bitmaps Yury Norov
2021-01-21  0:06 ` [PATCH 1/6] arch: rearrahge headers inclusion order in asm/bitops for m68k and sh Yury Norov
2021-01-21  8:03   ` Geert Uytterhoeven
2021-01-21  8:47   ` John Paul Adrian Glaubitz
2021-01-21  0:06 ` [PATCH 2/6] bitmap: move some macros from linux/bitmap.h to linux/bitops.h Yury Norov
2021-01-21 10:19   ` Andy Shevchenko
2021-01-21 20:38     ` Yury Norov
2021-01-21  0:06 ` Yury Norov [this message]
2021-01-21 10:23   ` [PATCH 3/6] tools: sync bitops macro definitions with the kernel Andy Shevchenko
2021-01-21  0:06 ` [PATCH 4/6] lib: inline _find_next_bit() wrappers Yury Norov
2021-01-21 10:28   ` Andy Shevchenko
2021-01-29  6:41     ` Yury Norov
2021-01-21  0:06 ` [PATCH 5/6] lib: add fast path for find_next_*_bit() Yury Norov
2021-01-21 10:34   ` Andy Shevchenko
2021-01-21  0:06 ` [PATCH 6/6] lib: add fast path for find_first_*_bit() and find_last_bit() Yury Norov
2021-01-21 10:40   ` Andy Shevchenko

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