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bitops: add #ifndef for each of find bitops

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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 #ifndef for each of the find bitops in the generic header
and source files.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita 2011-05-26 16:26:09 -07:00 • committed by Linus Torvalds
parent a2812e1783
commit 19de85ef57
5 changed files with 29 additions and 0 deletions
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2
include/linux/bitops.h
View file

@ -149,6 +149,7 @@ static inline unsigned long __ffs64(u64 word)
#ifdef __KERNEL__
#ifdef CONFIG_GENERIC_FIND_LAST_BIT
#ifndef find_last_bit
/**
* find_last_bit - find the last set bit in a memory region
* @addr: The address to start the search at
@ -158,6 +159,7 @@ static inline unsigned long __ffs64(u64 word)
*/
extern unsigned long find_last_bit(const unsigned long *addr,
unsigned long size);
#endif
#endif /* CONFIG_GENERIC_FIND_LAST_BIT */
#endif /* __KERNEL__ */