lib/find_bit.c declares five single-line wrappers for _find_next_bit().
We may turn those wrappers to inline functions. It eliminates
unneeded function calls and opens room for compile-time optimizations.
Signed-off-by: Yury Norov
---
include/asm-generic/bitops/find.h | 28
include/asm-generic/bitops/le.h | 17 +++---
lib/find_bit.c| 56 ++-
3 files changed, 37 insertions(+), 64 deletions(-)
diff --git a/include/asm-generic/bitops/find.h
b/include/asm-generic/bitops/find.h
index 9fdf21302fdf..7ad70dab8e93 100644
--- a/include/asm-generic/bitops/find.h
+++ b/include/asm-generic/bitops/find.h
@@ -2,6 +2,10 @@
#ifndef _ASM_GENERIC_BITOPS_FIND_H_
#define _ASM_GENERIC_BITOPS_FIND_H_
+extern unsigned long _find_next_bit(const unsigned long *addr1,
+ const unsigned long *addr2, unsigned long nbits,
+ unsigned long start, unsigned long invert, unsigned long le);
+
#ifndef find_next_bit
/**
* find_next_bit - find the next set bit in a memory region
@@ -12,8 +16,12 @@
* Returns the bit number for the next set bit
* If no bits are set, returns @size.
*/
-extern unsigned long find_next_bit(const unsigned long *addr, unsigned long
- size, unsigned long offset);
+static inline
+unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
+ unsigned long offset)
+{
+ return _find_next_bit(addr, NULL, size, offset, 0UL, 0);
+}
#endif
#ifndef find_next_and_bit
@@ -27,9 +35,13 @@ extern unsigned long find_next_bit(const unsigned long
*addr, unsigned long
* Returns the bit number for the next set bit
* If no bits are set, returns @size.
*/
-extern unsigned long find_next_and_bit(const unsigned long *addr1,
+static inline
+unsigned long find_next_and_bit(const unsigned long *addr1,
const unsigned long *addr2, unsigned long size,
- unsigned long offset);
+ unsigned long offset)
+{
+ return _find_next_bit(addr1, addr2, size, offset, 0UL, 0);
+}
#endif
#ifndef find_next_zero_bit
@@ -42,8 +54,12 @@ extern unsigned long find_next_and_bit(const unsigned long
*addr1,
* Returns the bit number of the next zero bit
* If no bits are zero, returns @size.
*/
-extern unsigned long find_next_zero_bit(const unsigned long *addr, unsigned
- long size, unsigned long offset);
+static inline
+unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
+unsigned long offset)
+{
+ return _find_next_bit(addr, NULL, size, offset, ~0UL, 0);
+}
#endif
#ifdef CONFIG_GENERIC_FIND_FIRST_BIT
diff --git a/include/asm-generic/bitops/le.h b/include/asm-generic/bitops/le.h
index 188d3eba3ace..4cf44ea16ec0 100644
--- a/include/asm-generic/bitops/le.h
+++ b/include/asm-generic/bitops/le.h
@@ -4,6 +4,7 @@
#include
#include
+#include
#if defined(__LITTLE_ENDIAN)
@@ -32,13 +33,21 @@ static inline unsigned long find_first_zero_bit_le(const
void *addr,
#define BITOP_LE_SWIZZLE ((BITS_PER_LONG-1) & ~0x7)
#ifndef find_next_zero_bit_le
-extern unsigned long find_next_zero_bit_le(const void *addr,
- unsigned long size, unsigned long offset);
+static inline
+unsigned long find_next_zero_bit_le(const void *addr, unsigned
+ long size, unsigned long offset)
+{
+ return _find_next_bit(addr, NULL, size, offset, ~0UL, 1);
+}
#endif
#ifndef find_next_bit_le
-extern unsigned long find_next_bit_le(const void *addr,
- unsigned long size, unsigned long offset);
+static inline
+unsigned long find_next_bit_le(const void *addr, unsigned
+ long size, unsigned long offset)
+{
+ return _find_next_bit(addr, NULL, size, offset, 0UL, 1);
+}
#endif
#ifndef find_first_zero_bit_le
diff --git a/lib/find_bit.c b/lib/find_bit.c
index f67f86fd2f62..b03a101367f8 100644
--- a/lib/find_bit.c
+++ b/lib/find_bit.c
@@ -29,7 +29,7 @@
*searching it for one bits.
* - The optional "addr2", which is anded with "addr1" if present.
*/
-static unsigned long _find_next_bit(const unsigned long *addr1,
+unsigned long _find_next_bit(const unsigned long *addr1,
const unsigned long *addr2, unsigned long nbits,
unsigned long start, unsigned long invert, unsigned long le)
{
@@ -68,37 +68,7 @@ static unsigned long _find_next_bit(const unsigned long
*addr1,
return min(start + __ffs(tmp), nbits);
}
-#endif
-
-#ifndef find_next_bit
-/*
- * Find the next set bit in a memory region.
- */
-unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
- unsigned long offset)
-{
- return _find_next_bit(addr, NULL, size, offset, 0UL, 0);
-}
-EXPORT_SYMBOL(find_next_bit);
-#endif
-
-#ifndef find_next_zero_bit
-unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
-
