Commit 2aba6925 authored by Alexander van Heukelum's avatar Alexander van Heukelum Committed by Ingo Molnar
Browse files

x86: switch 64-bit to generic find_first_bit 



Switch x86_64 to generic find_first_bit. The x86_64-specific
implementation is not removed.

Signed-off-by: default avatarAlexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 77b9bd9c

arch/x86/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -78,7 +78,7 @@ config GENERIC_BUG 
	depends on BUG



config GENERIC_FIND_FIRST_BIT

	def_bool X86_32

	def_bool y



config GENERIC_FIND_NEXT_BIT

	def_bool y

arch/x86/lib/bitops_64.c

+2 −0
Original line number Diff line number Diff line 
#ifndef CONFIG_GENERIC_FIND_FIRST_BIT

#include <linux/bitops.h>



#undef find_first_zero_bit
@@ -105,3 +106,4 @@ long find_first_bit(const unsigned long * addr, unsigned long size) 


EXPORT_SYMBOL(find_first_bit);

EXPORT_SYMBOL(find_first_zero_bit);

#endif

include/asm-x86/bitops_64.h

+2 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ 
 * Copyright 1992, Linus Torvalds.

 */



#ifndef CONFIG_GENERIC_FIND_FIRST_BIT

extern long find_first_zero_bit(const unsigned long *addr, unsigned long size);

extern long find_first_bit(const unsigned long *addr, unsigned long size);
@@ -24,6 +25,7 @@ static inline long __scanbit(unsigned long val, unsigned long max) 
	((__builtin_constant_p((size)) && (size) <= BITS_PER_LONG	\

	  ? (__scanbit(~*(unsigned long *)(addr), (size)))		\

	  : find_first_zero_bit((addr), (size))))

#endif



static inline void set_bit_string(unsigned long *bitmap, unsigned long i,

				  int len)