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author | Ingo Molnar <mingo@elte.hu> | 2008-07-30 13:33:48 -0400 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-30 13:33:48 -0400 |
commit | 15dd859cacf312f606f54502d1f66537a1e5c78c (patch) | |
tree | e50e125eaa6da83fa715704e53c1bde013d1ef8e /include/asm-arm/bitops.h | |
parent | b2d9d33412b9d13a40cd314d93ab517950fc5950 (diff) | |
parent | 6e86841d05f371b5b9b86ce76c02aaee83352298 (diff) |
Merge commit 'v2.6.27-rc1' into x86/core
Conflicts:
include/asm-x86/dma-mapping.h
include/asm-x86/namei.h
include/asm-x86/uaccess.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-arm/bitops.h')
-rw-r--r-- | include/asm-arm/bitops.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/asm-arm/bitops.h b/include/asm-arm/bitops.h index 5c60bfc1a84..9a1db20e032 100644 --- a/include/asm-arm/bitops.h +++ b/include/asm-arm/bitops.h | |||
@@ -277,9 +277,16 @@ static inline int constant_fls(int x) | |||
277 | * the clz instruction for much better code efficiency. | 277 | * the clz instruction for much better code efficiency. |
278 | */ | 278 | */ |
279 | 279 | ||
280 | #define fls(x) \ | 280 | #define __fls(x) \ |
281 | ( __builtin_constant_p(x) ? constant_fls(x) : \ | 281 | ( __builtin_constant_p(x) ? constant_fls(x) : \ |
282 | ({ int __r; asm("clz\t%0, %1" : "=r"(__r) : "r"(x) : "cc"); 32-__r; }) ) | 282 | ({ int __r; asm("clz\t%0, %1" : "=r"(__r) : "r"(x) : "cc"); 32-__r; }) ) |
283 | |||
284 | /* Implement fls() in C so that 64-bit args are suitably truncated */ | ||
285 | static inline int fls(int x) | ||
286 | { | ||
287 | return __fls(x); | ||
288 | } | ||
289 | |||
283 | #define ffs(x) ({ unsigned long __t = (x); fls(__t & -__t); }) | 290 | #define ffs(x) ({ unsigned long __t = (x); fls(__t & -__t); }) |
284 | #define __ffs(x) (ffs(x) - 1) | 291 | #define __ffs(x) (ffs(x) - 1) |
285 | #define ffz(x) __ffs( ~(x) ) | 292 | #define ffz(x) __ffs( ~(x) ) |