[PATCH v2 1/6] arch: add #define for each of optimized find bitops

[Akinobu Mita]

The style that we normally use in asm-generic is to test the macro itself
for existence, so in asm-generic, do:

	#ifndef find_next_zero_bit_le
	extern unsigned long find_next_zero_bit_le(const void *addr,
		unsigned long size, unsigned long offset);
	#endif

and in the architectures, write

	static inline unsigned long find_next_zero_bit_le(const void *addr,
		unsigned long size, unsigned long offset)
	#define find_next_zero_bit_le find_next_zero_bit_le

This adds the #define for each of the optimized find bitops in the
architectures.

Suggested-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Acked-by: Hans-Christian Egtvedt <hans-christian.egtvedt@xxxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: linux390@xxxxxxxxxx
Cc: linux-s390@xxxxxxxxxxxxxxx
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: linux-m68k@xxxxxxxxxxxxxxxxxxxx
Cc: Greg Ungerer <gerg@xxxxxxxxxxx>
---

Changes from previous submission:
- Add Acked-by: line
- Rebase to mainline

 arch/arm/include/asm/bitops.h     |    3 +++
 arch/avr32/include/asm/bitops.h   |   15 +++++++++++++++
 arch/m68k/include/asm/bitops_mm.h |    8 ++++++++
 arch/m68k/include/asm/bitops_no.h |    1 +
 arch/s390/include/asm/bitops.h    |    8 ++++++++
 5 files changed, 35 insertions(+), 0 deletions(-)

diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h
index 6b7403f..18a024b 100644
--- a/arch/arm/include/asm/bitops.h
+++ b/arch/arm/include/asm/bitops.h
@@ -326,16 +326,19 @@ static inline int find_first_zero_bit_le(const void *p, unsigned size)
 {
 	return _find_first_zero_bit_le(p, size);
 }
+#define find_first_zero_bit_le find_first_zero_bit_le
 
 static inline int find_next_zero_bit_le(const void *p, int size, int offset)
 {
 	return _find_next_zero_bit_le(p, size, offset);
 }
+#define find_next_zero_bit_le find_next_zero_bit_le
 
 static inline int find_next_bit_le(const void *p, int size, int offset)
 {
 	return _find_next_bit_le(p, size, offset);
 }
+#define find_next_bit_le find_next_bit_le
 
 /*
  * Ext2 is defined to use little-endian byte ordering.
diff --git a/arch/avr32/include/asm/bitops.h b/arch/avr32/include/asm/bitops.h
index 72444d9..b70c19b 100644
--- a/arch/avr32/include/asm/bitops.h
+++ b/arch/avr32/include/asm/bitops.h
@@ -270,14 +270,21 @@ static inline int __fls(unsigned long word)
 
 unsigned long find_first_zero_bit(const unsigned long *addr,
 				  unsigned long size);
+#define find_first_zero_bit find_first_zero_bit
+
 unsigned long find_next_zero_bit(const unsigned long *addr,
 				 unsigned long size,
 				 unsigned long offset);
+#define find_next_zero_bit find_next_zero_bit
+
 unsigned long find_first_bit(const unsigned long *addr,
 			     unsigned long size);
+#define find_first_bit find_first_bit
+
 unsigned long find_next_bit(const unsigned long *addr,
 				 unsigned long size,
 				 unsigned long offset);
+#define find_next_bit find_next_bit
 
 /*
  * ffs: find first bit set. This is defined the same way as
@@ -299,6 +306,14 @@ static inline int ffs(unsigned long word)
 #include <asm-generic/bitops/hweight.h>
 #include <asm-generic/bitops/lock.h>
 
+extern unsigned long find_next_zero_bit_le(const void *addr,
+		unsigned long size, unsigned long offset);
+#define find_next_zero_bit_le find_next_zero_bit_le
+
+extern unsigned long find_next_bit_le(const void *addr,
+		unsigned long size, unsigned long offset);
+#define find_next_bit_le find_next_bit_le
+
 #include <asm-generic/bitops/le.h>
 #include <asm-generic/bitops/ext2-atomic.h>
 
diff --git a/arch/m68k/include/asm/bitops_mm.h b/arch/m68k/include/asm/bitops_mm.h
index 9d69f6e..a938ebe 100644
--- a/arch/m68k/include/asm/bitops_mm.h
+++ b/arch/m68k/include/asm/bitops_mm.h
@@ -198,6 +198,7 @@ static inline int find_first_zero_bit(const unsigned long *vaddr,
 out:
 	return ((long)p - (long)vaddr - 4) * 8 + res;
 }
+#define find_first_zero_bit find_first_zero_bit
 
 static inline int find_next_zero_bit(const unsigned long *vaddr, int size,
 				     int offset)
@@ -223,6 +224,7 @@ static inline int find_next_zero_bit(const unsigned long *vaddr, int size,
 	res = find_first_zero_bit(p, size - ((long)p - (long)vaddr) * 8);
 	return offset + res;
 }
+#define find_next_zero_bit find_next_zero_bit
 
 static inline int find_first_bit(const unsigned long *vaddr, unsigned size)
 {
@@ -245,6 +247,7 @@ static inline int find_first_bit(const unsigned long *vaddr, unsigned size)
 out:
 	return ((long)p - (long)vaddr - 4) * 8 + res;
 }
+#define find_first_bit find_first_bit
 
 static inline int find_next_bit(const unsigned long *vaddr, int size,
 				int offset)
@@ -270,6 +273,7 @@ static inline int find_next_bit(const unsigned long *vaddr, int size,
 	res = find_first_bit(p, size - ((long)p - (long)vaddr) * 8);
 	return offset + res;
 }
+#define find_next_bit find_next_bit
 
 /*
  * ffz = Find First Zero in word. Undefined if no zero exists,
@@ -384,6 +388,7 @@ static inline int find_first_zero_bit_le(const void *vaddr, unsigned size)
 			break;
 	return (p - addr) * 32 + res;
 }
+#define find_first_zero_bit_le find_first_zero_bit_le
 
 static inline unsigned long find_next_zero_bit_le(const void *addr,
 		unsigned long size, unsigned long offset)
@@ -408,6 +413,7 @@ static inline unsigned long find_next_zero_bit_le(const void *addr,
 	/* No zero yet, search remaining full bytes for a zero */
 	return offset + find_first_zero_bit_le(p, size - offset);
 }
+#define find_next_zero_bit_le find_next_zero_bit_le
 
 static inline int find_first_bit_le(const void *vaddr, unsigned size)
 {
@@ -429,6 +435,7 @@ static inline int find_first_bit_le(const void *vaddr, unsigned size)
 			break;
 	return (p - addr) * 32 + res;
 }
+#define find_first_bit_le find_first_bit_le
 
 static inline unsigned long find_next_bit_le(const void *addr,
 		unsigned long size, unsigned long offset)
@@ -453,6 +460,7 @@ static inline unsigned long find_next_bit_le(const void *addr,
 	/* No set bit yet, search remaining full bytes for a set bit */
 	return offset + find_first_bit_le(p, size - offset);
 }
+#define find_next_bit_le find_next_bit_le
 
 /* Bitmap functions for the ext2 filesystem. */
 
diff --git a/arch/m68k/include/asm/bitops_no.h b/arch/m68k/include/asm/bitops_no.h
index 7d3779f..614c613 100644
--- a/arch/m68k/include/asm/bitops_no.h
+++ b/arch/m68k/include/asm/bitops_no.h
@@ -335,6 +335,7 @@ found_first:
 found_middle:
 	return result + ffz(__swab32(tmp));
 }
+#define find_next_zero_bit_le find_next_zero_bit_le
 
 #endif /* __KERNEL__ */
 
diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h
index e1c8f3a..426c974 100644
--- a/arch/s390/include/asm/bitops.h
+++ b/arch/s390/include/asm/bitops.h
@@ -621,6 +621,7 @@ static inline unsigned long find_first_zero_bit(const unsigned long *addr,
 	bits = __ffz_word(bytes*8, __load_ulong_be(addr, bytes));
 	return (bits < size) ? bits : size;
 }
+#define find_first_zero_bit find_first_zero_bit
 
 /**
  * find_first_bit - find the first set bit in a memory region
@@ -641,6 +642,7 @@ static inline unsigned long find_first_bit(const unsigned long * addr,
 	bits = __ffs_word(bytes*8, __load_ulong_be(addr, bytes));
 	return (bits < size) ? bits : size;
 }
+#define find_first_bit find_first_bit
 
 /**
  * find_next_zero_bit - find the first zero bit in a memory region
@@ -677,6 +679,7 @@ static inline int find_next_zero_bit (const unsigned long * addr,
 	}
 	return offset + find_first_zero_bit(p, size);
 }
+#define find_next_zero_bit find_next_zero_bit
 
 /**
  * find_next_bit - find the first set bit in a memory region
@@ -713,6 +716,7 @@ static inline int find_next_bit (const unsigned long * addr,
 	}
 	return offset + find_first_bit(p, size);
 }
+#define find_next_bit find_next_bit
 
 /*
  * Every architecture must define this function. It's the fastest
@@ -787,6 +791,7 @@ static inline int find_first_zero_bit_le(void *vaddr, unsigned int size)
 	bits = __ffz_word(bytes*8, __load_ulong_le(vaddr, bytes));
 	return (bits < size) ? bits : size;
 }
+#define find_first_zero_bit_le find_first_zero_bit_le
 
 static inline int find_next_zero_bit_le(void *vaddr, unsigned long size,
 					  unsigned long offset)
@@ -816,6 +821,7 @@ static inline int find_next_zero_bit_le(void *vaddr, unsigned long size,
         }
 	return offset + find_first_zero_bit_le(p, size);
 }
+#define find_next_zero_bit_le find_next_zero_bit_le
 
 static inline unsigned long find_first_bit_le(void *vaddr, unsigned long size)
 {
@@ -827,6 +833,7 @@ static inline unsigned long find_first_bit_le(void *vaddr, unsigned long size)
 	bits = __ffs_word(bytes*8, __load_ulong_le(vaddr, bytes));
 	return (bits < size) ? bits : size;
 }
+#define find_first_bit_le find_first_bit_le
 
 static inline int find_next_bit_le(void *vaddr, unsigned long size,
 				     unsigned long offset)
@@ -856,6 +863,7 @@ static inline int find_next_bit_le(void *vaddr, unsigned long size,
 	}
 	return offset + find_first_bit_le(p, size);
 }
+#define find_next_bit_le find_next_bit_le
 
 #define ext2_set_bit_atomic(lock, nr, addr)	\
 	test_and_set_bit_le(nr, addr)
-- 
1.7.4.4

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