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| author |   Akinobu Mita <akinobu.mita@gmail.com> | 2011-05-26 16:26:09 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-26 17:12:38 -0700 |
| commit | 19de85ef574c3a2182e3ccad9581805052f14946 (patch) | |
| tree | 98212bc122ac55807e562fd1ae6d0c5f0f2564d0 /include/linux/bitops.h | |
| parent | arch: add #define for each of optimized find bitops (diff) | |
| download | wireguard-linux-19de85ef574c3a2182e3ccad9581805052f14946.tar.xz wireguard-linux-19de85ef574c3a2182e3ccad9581805052f14946.zip | |
bitops: add #ifndef for each of find bitops
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>
Diffstat (limited to 'include/linux/bitops.h')
| -rw-r--r-- | include/linux/bitops.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index 2184c6b97aeb..4829252d7cfa 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h @@ -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__ */ |