arch/x86/include/asm/arch_hweight.h uses __sw_hweight{32,64} as
alternatives, but they are implemented in arch/x86/lib/hweight.S
x86 does not rely on the generic C implementation lib/hweight.c
at all, so CONFIG_GENERIC_HWEIGHT should be disabled.
__HAVE_ARCH_SW_HWEIGHT was unneeded in the first place.
Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
---
arch/x86/Kconfig | 3 ---
arch/x86/include/asm/arch_hweight.h | 2 --
lib/hweight.c | 4 ----
3 files changed, 9 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 6826143..c2813af 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -262,9 +262,6 @@ config GENERIC_BUG
config GENERIC_BUG_RELATIVE_POINTERS
bool
-config GENERIC_HWEIGHT
- def_bool y
-
config ARCH_MAY_HAVE_PC_FDC
def_bool y
depends on ISA_DMA_API
diff --git a/arch/x86/include/asm/arch_hweight.h b/arch/x86/include/asm/arch_hweight.h
index fc06935..ba88edd 100644
--- a/arch/x86/include/asm/arch_hweight.h
+++ b/arch/x86/include/asm/arch_hweight.h
@@ -12,8 +12,6 @@
#define REG_OUT "a"
#endif
-#define __HAVE_ARCH_SW_HWEIGHT
-
static __always_inline unsigned int __arch_hweight32(unsigned int w)
{
unsigned int res;
diff --git a/lib/hweight.c b/lib/hweight.c
index 7660d88..c94586b 100644
--- a/lib/hweight.c
+++ b/lib/hweight.c
@@ -10,7 +10,6 @@
* The Hamming Weight of a number is the total number of bits set in it.
*/
-#ifndef __HAVE_ARCH_SW_HWEIGHT
unsigned int __sw_hweight32(unsigned int w)
{
#ifdef CONFIG_ARCH_HAS_FAST_MULTIPLIER
@@ -27,7 +26,6 @@ unsigned int __sw_hweight32(unsigned int w)
#endif
}
EXPORT_SYMBOL(__sw_hweight32);
-#endif
unsigned int __sw_hweight16(unsigned int w)
{
@@ -46,7 +44,6 @@ unsigned int __sw_hweight8(unsigned int w)
}
EXPORT_SYMBOL(__sw_hweight8);
-#ifndef __HAVE_ARCH_SW_HWEIGHT
unsigned long __sw_hweight64(__u64 w)
{
#if BITS_PER_LONG == 32
@@ -69,4 +66,3 @@ unsigned long __sw_hweight64(__u64 w)
#endif
}
EXPORT_SYMBOL(__sw_hweight64);
-#endif
--
2.7.4
