lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

arch: add #define for each of optimized find bitops

Browse Source 
The style that we normally use in asm-generic is to test the macro itself
for existence, so in asm-generic, do:

	#ifndef find_next_zero_bit_le
	extern unsigned long find_next_zero_bit_le(const void *addr,
		unsigned long size, unsigned long offset);
	#endif

and in the architectures, write

	static inline unsigned long find_next_zero_bit_le(const void *addr,
		unsigned long size, unsigned long offset)
	#define find_next_zero_bit_le find_next_zero_bit_le

This adds the #define for each of the optimized find bitops in the
architectures.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita
2011-05-26 16:26:06 -07:00
committed by Linus Torvalds
parent e0819410db
commit a2812e1783
5 changed files with 36 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
arch/s390/include/asm/bitops.h
View File

@@ -621,6 +621,7 @@ static inline unsigned long find_first_zero_bit(const unsigned long *addr,
bits = __ffz_word(bytes*8, __load_ulong_be(addr, bytes));
return (bits < size) ? bits : size;
}
#define find_first_zero_bit find_first_zero_bit
/**
* find_first_bit - find the first set bit in a memory region
@@ -641,6 +642,7 @@ static inline unsigned long find_first_bit(const unsigned long * addr,
bits = __ffs_word(bytes*8, __load_ulong_be(addr, bytes));
return (bits < size) ? bits : size;
}
#define find_first_bit find_first_bit
/**
* find_next_zero_bit - find the first zero bit in a memory region
@@ -677,6 +679,7 @@ static inline int find_next_zero_bit (const unsigned long * addr,
}
return offset + find_first_zero_bit(p, size);
}
#define find_next_zero_bit find_next_zero_bit
/**
* find_next_bit - find the first set bit in a memory region
@@ -713,6 +716,7 @@ static inline int find_next_bit (const unsigned long * addr,
}
return offset + find_first_bit(p, size);
}
#define find_next_bit find_next_bit
/*
* Every architecture must define this function. It's the fastest
@@ -787,6 +791,7 @@ static inline int find_first_zero_bit_le(void *vaddr, unsigned int size)
bits = __ffz_word(bytes*8, __load_ulong_le(vaddr, bytes));
return (bits < size) ? bits : size;
}
#define find_first_zero_bit_le find_first_zero_bit_le
static inline int find_next_zero_bit_le(void *vaddr, unsigned long size,
unsigned long offset)
@@ -816,6 +821,7 @@ static inline int find_next_zero_bit_le(void *vaddr, unsigned long size,
}
return offset + find_first_zero_bit_le(p, size);
}
#define find_next_zero_bit_le find_next_zero_bit_le
static inline unsigned long find_first_bit_le(void *vaddr, unsigned long size)
{
@@ -827,6 +833,7 @@ static inline unsigned long find_first_bit_le(void *vaddr, unsigned long size)
bits = __ffs_word(bytes*8, __load_ulong_le(vaddr, bytes));
return (bits < size) ? bits : size;
}
#define find_first_bit_le find_first_bit_le
static inline int find_next_bit_le(void *vaddr, unsigned long size,
unsigned long offset)
@@ -856,6 +863,7 @@ static inline int find_next_bit_le(void *vaddr, unsigned long size,
}
return offset + find_first_bit_le(p, size);
}
#define find_next_bit_le find_next_bit_le
#define ext2_set_bit_atomic(lock, nr, addr) \
test_and_set_bit_le(nr, addr)