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author | David S. Miller <davem@davemloft.net> | 2008-12-15 20:03:50 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2008-12-15 20:03:50 -0800 |
commit | eb14f019597cd86c21a6c601d7e900f40030c2e7 (patch) | |
tree | 36fb2f36a1747f98988f87215db1eef3a71d45eb /arch/arm/include/asm/bitops.h | |
parent | 8390/8390p: Fix compat netdev ops handling. (diff) | |
parent | Merge master.kernel.org:/home/rmk/linux-2.6-arm (diff) | |
download | linux-dev-eb14f019597cd86c21a6c601d7e900f40030c2e7.tar.xz linux-dev-eb14f019597cd86c21a6c601d7e900f40030c2e7.zip |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/e1000e/ich8lan.c
Diffstat (limited to 'arch/arm/include/asm/bitops.h')
-rw-r--r-- | arch/arm/include/asm/bitops.h | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h index 9a1db20e032a..63a481fbbed4 100644 --- a/arch/arm/include/asm/bitops.h +++ b/arch/arm/include/asm/bitops.h @@ -237,6 +237,7 @@ extern int _find_next_bit_be(const unsigned long *p, int size, int offset); #if __LINUX_ARM_ARCH__ < 5 #include <asm-generic/bitops/ffz.h> +#include <asm-generic/bitops/__fls.h> #include <asm-generic/bitops/__ffs.h> #include <asm-generic/bitops/fls.h> #include <asm-generic/bitops/ffs.h> @@ -277,16 +278,19 @@ static inline int constant_fls(int x) * the clz instruction for much better code efficiency. */ -#define __fls(x) \ - ( __builtin_constant_p(x) ? constant_fls(x) : \ - ({ int __r; asm("clz\t%0, %1" : "=r"(__r) : "r"(x) : "cc"); 32-__r; }) ) - -/* Implement fls() in C so that 64-bit args are suitably truncated */ static inline int fls(int x) { - return __fls(x); + int ret; + + if (__builtin_constant_p(x)) + return constant_fls(x); + + asm("clz\t%0, %1" : "=r" (ret) : "r" (x) : "cc"); + ret = 32 - ret; + return ret; } +#define __fls(x) (fls(x) - 1) #define ffs(x) ({ unsigned long __t = (x); fls(__t & -__t); }) #define __ffs(x) (ffs(x) - 1) #define ffz(x) __ffs( ~(x) ) |