From a56560b3b233238e85205d4e8d7bded904ac2306 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Wed, 23 Mar 2011 16:41:50 -0700 Subject: [PATCH] asm-generic: change little-endian bitops to take any pointer types This makes the little-endian bitops take any pointer types by changing the prototypes and adding casts in the preprocessor macros. That would seem to at least make all the filesystem code happier, and they can continue to do just something like #define ext2_set_bit __test_and_set_bit_le (or whatever the exact sequence ends up being). Signed-off-by: Akinobu Mita Cc: Arnd Bergmann Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Mikael Starvik Cc: David Howells Cc: Yoshinori Sato Cc: "Luck, Tony" Cc: Ralf Baechle Cc: Kyle McMartin Cc: Matthew Wilcox Cc: Grant Grundler Cc: Paul Mundt Cc: Kazumoto Kojima Cc: Hirokazu Takata Cc: "David S. Miller" Cc: Chris Zankel Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Hans-Christian Egtvedt Cc: "H. Peter Anvin" Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/powerpc/include/asm/bitops.h | 4 +- include/asm-generic/bitops/le.h | 73 +++++++++++++++++++++---------- lib/find_next_bit.c | 10 +++-- 3 files changed, 59 insertions(+), 28 deletions(-) diff --git a/arch/powerpc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h index 97aacbdd752a..db567ed9212d 100644 --- a/arch/powerpc/include/asm/bitops.h +++ b/arch/powerpc/include/asm/bitops.h @@ -305,10 +305,10 @@ static __inline__ int test_le_bit(unsigned long nr, #define find_first_zero_bit_le(addr, size) \ find_next_zero_bit_le((addr), (size), 0) -unsigned long find_next_zero_bit_le(const unsigned long *addr, +unsigned long find_next_zero_bit_le(const void *addr, unsigned long size, unsigned long offset); -unsigned long find_next_bit_le(const unsigned long *addr, +unsigned long find_next_bit_le(const void *addr, unsigned long size, unsigned long offset); /* Bitmap functions for the ext2 filesystem */ diff --git a/include/asm-generic/bitops/le.h b/include/asm-generic/bitops/le.h index 394ac3ebcbde..946a21b1b5dc 100644 --- a/include/asm-generic/bitops/le.h +++ b/include/asm-generic/bitops/le.h @@ -8,20 +8,31 @@ #define BITOP_LE_SWIZZLE 0 -#define find_next_zero_bit_le(addr, size, offset) \ - find_next_zero_bit(addr, size, offset) -#define find_next_bit_le(addr, size, offset) \ - find_next_bit(addr, size, offset) -#define find_first_zero_bit_le(addr, size) \ - find_first_zero_bit(addr, size) +static inline unsigned long find_next_zero_bit_le(const void *addr, + unsigned long size, unsigned long offset) +{ + return find_next_zero_bit(addr, size, offset); +} + +static inline unsigned long find_next_bit_le(const void *addr, + unsigned long size, unsigned long offset) +{ + return find_next_bit(addr, size, offset); +} + +static inline unsigned long find_first_zero_bit_le(const void *addr, + unsigned long size) +{ + return find_first_zero_bit(addr, size); +} #elif defined(__BIG_ENDIAN) #define BITOP_LE_SWIZZLE ((BITS_PER_LONG-1) & ~0x7) -extern unsigned long find_next_zero_bit_le(const unsigned long *addr, +extern unsigned long find_next_zero_bit_le(const void *addr, unsigned long size, unsigned long offset); -extern unsigned long find_next_bit_le(const unsigned long *addr, +extern unsigned long find_next_bit_le(const void *addr, unsigned long size, unsigned long offset); #define find_first_zero_bit_le(addr, size) \ @@ -31,21 +42,39 @@ extern unsigned long find_next_bit_le(const unsigned long *addr, #error "Please fix " #endif -#define test_bit_le(nr, addr) \ - test_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) -#define __set_bit_le(nr, addr) \ - __set_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) -#define __clear_bit_le(nr, addr) \ - __clear_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) +static inline int test_bit_le(int nr, const void *addr) +{ + return test_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} -#define test_and_set_bit_le(nr, addr) \ - test_and_set_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) -#define test_and_clear_bit_le(nr, addr) \ - test_and_clear_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) +static inline void __set_bit_le(int nr, void *addr) +{ + __set_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} -#define __test_and_set_bit_le(nr, addr) \ - __test_and_set_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) -#define __test_and_clear_bit_le(nr, addr) \ - __test_and_clear_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) +static inline void __clear_bit_le(int nr, void *addr) +{ + __clear_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} + +static inline int test_and_set_bit_le(int nr, void *addr) +{ + return test_and_set_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} + +static inline int test_and_clear_bit_le(int nr, void *addr) +{ + return test_and_clear_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} + +static inline int __test_and_set_bit_le(int nr, void *addr) +{ + return __test_and_set_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} + +static inline int __test_and_clear_bit_le(int nr, void *addr) +{ + return __test_and_clear_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} #endif /* _ASM_GENERIC_BITOPS_LE_H_ */ diff --git a/lib/find_next_bit.c b/lib/find_next_bit.c index c093ba988003..7667c3d907d3 100644 --- a/lib/find_next_bit.c +++ b/lib/find_next_bit.c @@ -185,15 +185,16 @@ static inline unsigned long ext2_swab(const unsigned long y) #endif } -unsigned long find_next_zero_bit_le(const unsigned long *addr, unsigned +unsigned long find_next_zero_bit_le(const void *addr, unsigned long size, unsigned long offset) { - const unsigned long *p = addr + BITOP_WORD(offset); + const unsigned long *p = addr; unsigned long result = offset & ~(BITS_PER_LONG - 1); unsigned long tmp; if (offset >= size) return size; + p += BITOP_WORD(offset); size -= result; offset &= (BITS_PER_LONG - 1UL); if (offset) { @@ -228,15 +229,16 @@ unsigned long find_next_zero_bit_le(const unsigned long *addr, unsigned } EXPORT_SYMBOL(find_next_zero_bit_le); -unsigned long find_next_bit_le(const unsigned long *addr, unsigned +unsigned long find_next_bit_le(const void *addr, unsigned long size, unsigned long offset) { - const unsigned long *p = addr + BITOP_WORD(offset); + const unsigned long *p = addr; unsigned long result = offset & ~(BITS_PER_LONG - 1); unsigned long tmp; if (offset >= size) return size; + p += BITOP_WORD(offset); size -= result; offset &= (BITS_PER_LONG - 1UL); if (offset) {