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Merge branch 'core-hweight-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'core-hweight-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, hweight: Use a 32-bit popcnt for __arch_hweight32()
  arch, hweight: Fix compilation errors
  x86: Add optimized popcnt variants
  bitops: Optimize hweight() by making use of compile-time evaluation
This commit is contained in:
Linus Torvalds
2010-05-18 09:17:01 -07:00
parent 98f01720cb c59bd56882
commit cb41838bbc
14 changed files with 188 additions and 62 deletions
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arch/alpha/include/asm/bitops.h
+10 -8
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@@ -405,29 +405,31 @@ static inline int fls(int x)
#if defined(CONFIG_ALPHA_EV6) && defined(CONFIG_ALPHA_EV67)
/* Whee. EV67 can calculate it directly. */
static inline unsigned long hweight64(unsigned long w)
static inline unsigned long __arch_hweight64(unsigned long w)
{
return __kernel_ctpop(w);
}
static inline unsigned int hweight32(unsigned int w)
static inline unsigned int __arch_weight32(unsigned int w)
{
return hweight64(w);
return __arch_hweight64(w);
}
static inline unsigned int hweight16(unsigned int w)
static inline unsigned int __arch_hweight16(unsigned int w)
{
return hweight64(w & 0xffff);
return __arch_hweight64(w & 0xffff);
}
static inline unsigned int hweight8(unsigned int w)
static inline unsigned int __arch_hweight8(unsigned int w)
{
return hweight64(w & 0xff);
return __arch_hweight64(w & 0xff);
}
#else
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/arch_hweight.h>
#endif
#include <asm-generic/bitops/const_hweight.h>
#endif /* __KERNEL__ */
#include <asm-generic/bitops/find.h>