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bitops: remove minix bitops from asm/bitops.h

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minix bit operations are only used by minix filesystem and useless by
other modules.  Because byte order of inode and block bitmaps is different
on each architecture like below:

m68k:
	big-endian 16bit indexed bitmaps

h8300, microblaze, s390, sparc, m68knommu:
	big-endian 32 or 64bit indexed bitmaps

m32r, mips, sh, xtensa:
	big-endian 32 or 64bit indexed bitmaps for big-endian mode
	little-endian bitmaps for little-endian mode

Others:
	little-endian bitmaps

In order to move minix bit operations from asm/bitops.h to architecture
independent code in minix filesystem, this provides two config options.

CONFIG_MINIX_FS_BIG_ENDIAN_16BIT_INDEXED is only selected by m68k.
CONFIG_MINIX_FS_NATIVE_ENDIAN is selected by the architectures which use
native byte order bitmaps (h8300, microblaze, s390, sparc, m68knommu,
m32r, mips, sh, xtensa).  The architectures which always use little-endian
bitmaps do not select these options.

Finally, we can remove minix bit operations from asm/bitops.h for all
architectures.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Michal Simek <monstr@monstr.eu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Chris Zankel <chris@zankel.net>
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
2011-03-23 16:42:16 -07:00
committed by Linus Torvalds
parent 3fca5af786
commit 61f2e7b0f4
27 changed files with 82 additions and 110 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/alpha/include/asm/bitops.h
-2
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@@ -459,8 +459,6 @@ sched_find_first_bit(const unsigned long b[2])
#define ext2_set_bit_atomic(l,n,a) test_and_set_bit(n,a)
#define ext2_clear_bit_atomic(l,n,a) test_and_clear_bit(n,a)
#include <asm-generic/bitops/minix.h>
#endif /* __KERNEL__ */
#endif /* _ALPHA_BITOPS_H */
arch/arm/include/asm/bitops.h
-10
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@@ -345,16 +345,6 @@ static inline int find_next_bit_le(const void *p, int size, int offset)
#define ext2_clear_bit_atomic(lock, nr, p) \
test_and_clear_bit_le(nr, p)
/*
* Minix is defined to use little-endian byte ordering.
* These do not need to be atomic.
*/
#define minix_set_bit __set_bit_le
#define minix_test_bit test_bit_le
#define minix_test_and_set_bit __test_and_set_bit_le
#define minix_test_and_clear_bit __test_and_clear_bit_le
#define minix_find_first_zero_bit find_first_zero_bit_le
#endif /* __KERNEL__ */
#endif /* _ARM_BITOPS_H */
arch/avr32/include/asm/bitops.h
-1
View File
@@ -301,6 +301,5 @@ static inline int ffs(unsigned long word)
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>
#include <asm-generic/bitops/minix-le.h>
#endif /* __ASM_AVR32_BITOPS_H */
arch/blackfin/include/asm/bitops.h
-1
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@@ -27,7 +27,6 @@
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>
#include <asm-generic/bitops/minix.h>
#ifndef CONFIG_SMP
#include <linux/irqflags.h>
arch/cris/include/asm/bitops.h
-1
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@@ -159,7 +159,6 @@ static inline int test_and_change_bit(int nr, volatile unsigned long *addr)
#define ext2_set_bit_atomic(l,n,a) test_and_set_bit(n,a)
#define ext2_clear_bit_atomic(l,n,a) test_and_clear_bit(n,a)
#include <asm-generic/bitops/minix.h>
#include <asm-generic/bitops/sched.h>
#endif /* __KERNEL__ */
arch/frv/include/asm/bitops.h
-2
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@@ -406,8 +406,6 @@ int __ilog2_u64(u64 n)
#define ext2_set_bit_atomic(lock,nr,addr) test_and_set_bit ((nr) ^ 0x18, (addr))
#define ext2_clear_bit_atomic(lock,nr,addr) test_and_clear_bit((nr) ^ 0x18, (addr))
#include <asm-generic/bitops/minix-le.h>
#endif /* __KERNEL__ */
#endif /* _ASM_BITOPS_H */
arch/h8300/include/asm/bitops.h
-1
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@@ -202,7 +202,6 @@ static __inline__ unsigned long __ffs(unsigned long word)
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>
#include <asm-generic/bitops/minix.h>
#endif /* __KERNEL__ */
arch/ia64/include/asm/bitops.h
-1
View File
@@ -461,7 +461,6 @@ static __inline__ unsigned long __arch_hweight64(unsigned long x)
#define ext2_set_bit_atomic(l,n,a) test_and_set_bit(n,a)
#define ext2_clear_bit_atomic(l,n,a) test_and_clear_bit(n,a)
#include <asm-generic/bitops/minix.h>
#include <asm-generic/bitops/sched.h>
#endif /* __KERNEL__ */
arch/m32r/include/asm/bitops.h
-1
View File
@@ -268,7 +268,6 @@ static __inline__ int test_and_change_bit(int nr, volatile void * addr)
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>
#include <asm-generic/bitops/minix.h>
#endif /* __KERNEL__ */
arch/m68k/include/asm/bitops_mm.h
-30
View File
@@ -325,36 +325,6 @@ static inline int __fls(int x)
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/lock.h>
/* Bitmap functions for the minix filesystem */
static inline int minix_find_first_zero_bit(const void *vaddr, unsigned size)
{
const unsigned short *p = vaddr, *addr = vaddr;
unsigned short num;
if (!size)
return 0;
size = (size >> 4) + ((size & 15) > 0);
while (*p++ == 0xffff) {
if (--size == 0)
return (p - addr) << 4;
}
num = *--p;
return ((p - addr) << 4) + ffz(num);
}
#define minix_test_and_set_bit(nr, addr) __test_and_set_bit((nr) ^ 16, (unsigned long *)(addr))
#define minix_set_bit(nr,addr) __set_bit((nr) ^ 16, (unsigned long *)(addr))
#define minix_test_and_clear_bit(nr, addr) __test_and_clear_bit((nr) ^ 16, (unsigned long *)(addr))
static inline int minix_test_bit(int nr, const void *vaddr)
{
const unsigned short *p = vaddr;
return (p[nr >> 4] & (1U << (nr & 15))) != 0;
}
/* Bitmap functions for the little endian bitmap. */
static inline void __set_bit_le(int nr, void *addr)
arch/m68k/include/asm/bitops_no.h
-2
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@@ -336,8 +336,6 @@ found_middle:
return result + ffz(__swab32(tmp));
}
#include <asm-generic/bitops/minix.h>
#endif /* __KERNEL__ */
#include <asm-generic/bitops/fls.h>
arch/mips/include/asm/bitops.h
-1
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@@ -678,7 +678,6 @@ static inline int ffs(int word)
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>
#include <asm-generic/bitops/minix.h>
#endif /* __KERNEL__ */
arch/mn10300/include/asm/bitops.h
-1
View File
@@ -234,7 +234,6 @@ int ffs(int x)
test_and_clear_bit((nr), (addr))
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/minix-le.h>
#endif /* __KERNEL__ */
#endif /* __ASM_BITOPS_H */
arch/parisc/include/asm/bitops.h
-2
View File
@@ -234,6 +234,4 @@ static __inline__ int fls(int x)
#endif /* __KERNEL__ */
#include <asm-generic/bitops/minix-le.h>
#endif /* _PARISC_BITOPS_H */
arch/powerpc/include/asm/bitops.h
-14
View File
@@ -332,20 +332,6 @@ unsigned long find_next_bit_le(const void *addr,
#define ext2_clear_bit_atomic(lock, nr, addr) \
test_and_clear_bit_le((nr), (unsigned long*)addr)
/* Bitmap functions for the minix filesystem. */
#define minix_test_and_set_bit(nr,addr) \
__test_and_set_bit_le(nr, (unsigned long *)addr)
#define minix_set_bit(nr,addr) \
__set_bit_le(nr, (unsigned long *)addr)
#define minix_test_and_clear_bit(nr,addr) \
__test_and_clear_bit_le(nr, (unsigned long *)addr)
#define minix_test_bit(nr,addr) \
test_bit_le(nr, (unsigned long *)addr)
#define minix_find_first_zero_bit(addr,size) \
find_first_zero_bit_le((unsigned long *)addr, size)
#include <asm-generic/bitops/sched.h>
#endif /* __KERNEL__ */
arch/s390/include/asm/bitops.h
-1
View File
@@ -862,7 +862,6 @@ static inline int find_next_bit_le(void *vaddr, unsigned long size,
#define ext2_clear_bit_atomic(lock, nr, addr) \
test_and_clear_bit_le(nr, addr)
#include <asm-generic/bitops/minix.h>
#endif /* __KERNEL__ */
arch/sh/include/asm/bitops.h
-1
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@@ -96,7 +96,6 @@ static inline unsigned long ffz(unsigned long word)
#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>
#include <asm-generic/bitops/minix.h>
#include <asm-generic/bitops/fls.h>
#include <asm-generic/bitops/__fls.h>
#include <asm-generic/bitops/fls64.h>
arch/sparc/include/asm/bitops_32.h
-1
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@@ -105,7 +105,6 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
#include <asm-generic/bitops/find.h>
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>
#include <asm-generic/bitops/minix.h>
#endif /* __KERNEL__ */
arch/sparc/include/asm/bitops_64.h
-2
View File
@@ -96,8 +96,6 @@ static inline unsigned int __arch_hweight8(unsigned int w)
#define ext2_clear_bit_atomic(lock,nr,addr) \
test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))
#include <asm-generic/bitops/minix.h>
#endif /* __KERNEL__ */
#endif /* defined(_SPARC64_BITOPS_H) */
arch/tile/include/asm/bitops.h
-1
View File
@@ -123,6 +123,5 @@ static inline unsigned long __arch_hweight64(__u64 w)
#include <asm-generic/bitops/find.h>
#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/minix.h>
#endif /* _ASM_TILE_BITOPS_H */

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