diff options
author | David S. Miller <davem@davemloft.net> | 2010-04-06 23:53:30 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2010-04-06 23:53:30 -0700 |
commit | 4a35ecf8bf1c4b039503fa554100fe85c761de76 (patch) | |
tree | 9b75f5d5636004d9a9aa496924377379be09aa1f /arch/blackfin/include/asm/bitops.h | |
parent | b4d562e3c3553ac58c7120555c4e4aefbb090a2a (diff) | |
parent | fb9e2d887243499b8d28efcf80821c4f6a092395 (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/bonding/bond_main.c
drivers/net/via-velocity.c
drivers/net/wireless/iwlwifi/iwl-agn.c
Diffstat (limited to 'arch/blackfin/include/asm/bitops.h')
-rw-r--r-- | arch/blackfin/include/asm/bitops.h | 74 |
1 files changed, 55 insertions, 19 deletions
diff --git a/arch/blackfin/include/asm/bitops.h b/arch/blackfin/include/asm/bitops.h index a2ff3fb3568..605ba8e9b2e 100644 --- a/arch/blackfin/include/asm/bitops.h +++ b/arch/blackfin/include/asm/bitops.h @@ -7,22 +7,41 @@ #ifndef _BLACKFIN_BITOPS_H #define _BLACKFIN_BITOPS_H -#ifndef CONFIG_SMP -# include <asm-generic/bitops.h> -#else +#include <linux/compiler.h> + +#include <asm-generic/bitops/__ffs.h> +#include <asm-generic/bitops/ffz.h> +#include <asm-generic/bitops/fls.h> +#include <asm-generic/bitops/__fls.h> +#include <asm-generic/bitops/fls64.h> +#include <asm-generic/bitops/find.h> #ifndef _LINUX_BITOPS_H #error only <linux/bitops.h> can be included directly #endif -#include <linux/compiler.h> -#include <asm/byteorder.h> /* swab32 */ - -#include <asm-generic/bitops/ffs.h> -#include <asm-generic/bitops/__ffs.h> #include <asm-generic/bitops/sched.h> -#include <asm-generic/bitops/ffz.h> +#include <asm-generic/bitops/ffs.h> +#include <asm-generic/bitops/lock.h> +#include <asm-generic/bitops/ext2-non-atomic.h> +#include <asm-generic/bitops/ext2-atomic.h> +#include <asm-generic/bitops/minix.h> + +#ifndef CONFIG_SMP +#include <linux/irqflags.h> + +/* + * clear_bit may not imply a memory barrier + */ +#ifndef smp_mb__before_clear_bit +#define smp_mb__before_clear_bit() smp_mb() +#define smp_mb__after_clear_bit() smp_mb() +#endif +#include <asm-generic/bitops/atomic.h> +#include <asm-generic/bitops/non-atomic.h> +#else +#include <asm/byteorder.h> /* swab32 */ #include <linux/linkage.h> asmlinkage int __raw_bit_set_asm(volatile unsigned long *addr, int nr); @@ -89,19 +108,36 @@ static inline int test_and_change_bit(int nr, volatile unsigned long *addr) #include <asm-generic/bitops/non-atomic.h> -#include <asm-generic/bitops/find.h> -#include <asm-generic/bitops/hweight.h> -#include <asm-generic/bitops/lock.h> +#endif /* CONFIG_SMP */ -#include <asm-generic/bitops/ext2-atomic.h> -#include <asm-generic/bitops/ext2-non-atomic.h> +/* + * hweightN: returns the hamming weight (i.e. the number + * of bits set) of a N-bit word + */ -#include <asm-generic/bitops/minix.h> +static inline unsigned int hweight32(unsigned int w) +{ + unsigned int res; -#include <asm-generic/bitops/fls.h> -#include <asm-generic/bitops/__fls.h> -#include <asm-generic/bitops/fls64.h> + __asm__ ("%0.l = ONES %0;" + "%0 = %0.l (Z);" + : "=d" (res) : "d" (w)); + return res; +} -#endif /* CONFIG_SMP */ +static inline unsigned int hweight64(__u64 w) +{ + return hweight32((unsigned int)(w >> 32)) + hweight32((unsigned int)w); +} + +static inline unsigned int hweight16(unsigned int w) +{ + return hweight32(w & 0xffff); +} + +static inline unsigned int hweight8(unsigned int w) +{ + return hweight32(w & 0xff); +} #endif /* _BLACKFIN_BITOPS_H */ |