diff options
author | Akinobu Mita <akinobu.mita@gmail.com> | 2011-07-26 19:09:04 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-26 19:49:46 -0400 |
commit | 148817ba092f9f6edd35bad3c6c6b8e8f90fe2ed (patch) | |
tree | 75cc7df62c9713bc1a44738026878a79653faa38 /arch/parisc | |
parent | b2c9cd3793e5878e301ec2219785a7b8ca402ef1 (diff) |
asm-generic: add another generic ext2 atomic bitops
The majority of architectures implement ext2 atomic bitops as
test_and_{set,clear}_bit() without spinlock.
This adds this type of generic implementation in ext2-atomic-setbit.h and
use it wherever possible.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Suggested-by: Andreas Dilger <adilger@dilger.ca>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/parisc')
-rw-r--r-- | arch/parisc/include/asm/bitops.h | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/arch/parisc/include/asm/bitops.h b/arch/parisc/include/asm/bitops.h index 43c516fa17ff..4e833aa05a44 100644 --- a/arch/parisc/include/asm/bitops.h +++ b/arch/parisc/include/asm/bitops.h | |||
@@ -223,14 +223,7 @@ static __inline__ int fls(int x) | |||
223 | #ifdef __KERNEL__ | 223 | #ifdef __KERNEL__ |
224 | 224 | ||
225 | #include <asm-generic/bitops/le.h> | 225 | #include <asm-generic/bitops/le.h> |
226 | 226 | #include <asm-generic/bitops/ext2-atomic-setbit.h> | |
227 | /* '3' is bits per byte */ | ||
228 | #define LE_BYTE_ADDR ((sizeof(unsigned long) - 1) << 3) | ||
229 | |||
230 | #define ext2_set_bit_atomic(l,nr,addr) \ | ||
231 | test_and_set_bit((nr) ^ LE_BYTE_ADDR, (unsigned long *)addr) | ||
232 | #define ext2_clear_bit_atomic(l,nr,addr) \ | ||
233 | test_and_clear_bit( (nr) ^ LE_BYTE_ADDR, (unsigned long *)addr) | ||
234 | 227 | ||
235 | #endif /* __KERNEL__ */ | 228 | #endif /* __KERNEL__ */ |
236 | 229 | ||