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Date: Fri, 15 Oct 2010 18:46:03 +0900 From: Akinobu Mita <akinobu.mita@...il.com> To: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org, Arnd Bergmann <arnd@...db.de>, Christoph Hellwig <hch@...radead.org>, Andrew Morton <akpm@...ux-foundation.org> Cc: Akinobu Mita <akinobu.mita@...il.com>, Russell King <linux@....linux.org.uk>, linux-arm-kernel@...ts.infradead.org Subject: [PATCH 04/22] arm: introduce little endian bitops Introduce little endian bit operations by renaming native ext2 bit operations. The ext2 bit operations are kept by using little endian bit operations until the conversions are finished. Signed-off-by: Akinobu Mita <akinobu.mita@...il.com> Cc: Russell King <linux@....linux.org.uk> Cc: linux-arm-kernel@...ts.infradead.org --- arch/arm/include/asm/bitops.h | 46 +++++++++++++++++++++++++++++----------- 1 files changed, 33 insertions(+), 13 deletions(-) diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h index 338ff19..d8af4af 100644 --- a/arch/arm/include/asm/bitops.h +++ b/arch/arm/include/asm/bitops.h @@ -303,41 +303,61 @@ static inline int fls(int x) #include <asm-generic/bitops/hweight.h> #include <asm-generic/bitops/lock.h> +#define __set_le_bit(nr, p) \ + __set_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define __clear_le_bit(nr, p) \ + __clear_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define __test_and_set_le_bit(nr, p) \ + __test_and_set_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define test_and_set_le_bit(lock, nr, p) \ + test_and_set_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define __test_and_clear_le_bit(nr, p) \ + __test_and_clear_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define test_and_clear_le_bit(lock, nr, p) \ + test_and_clear_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define test_le_bit(nr, p) \ + test_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define find_first_zero_le_bit(p, sz) \ + _find_first_zero_bit_le(p, sz) +#define find_next_zero_le_bit(p, sz, off) \ + _find_next_zero_bit_le(p, sz, off) +#define find_next_le_bit(p, sz, off) \ + _find_next_bit_le(p, sz, off) /* * Ext2 is defined to use little-endian byte ordering. * These do not need to be atomic. */ #define ext2_set_bit(nr,p) \ - __test_and_set_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) + __test_and_set_le_bit(nr, (unsigned long *)(p)) #define ext2_set_bit_atomic(lock,nr,p) \ - test_and_set_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) + test_and_set_le_bit(nr, (unsigned long *)(p)) #define ext2_clear_bit(nr,p) \ - __test_and_clear_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) + __test_and_clear_le_bit(nr, (unsigned long *)(p)) #define ext2_clear_bit_atomic(lock,nr,p) \ - test_and_clear_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) + test_and_clear_le_bit(nr, (unsigned long *)(p)) #define ext2_test_bit(nr,p) \ - test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) + test_le_bit(nr, (unsigned long *)(p)) #define ext2_find_first_zero_bit(p,sz) \ - _find_first_zero_bit_le(p,sz) + find_first_zero_le_bit((unsigned long *)(p), sz) #define ext2_find_next_zero_bit(p,sz,off) \ - _find_next_zero_bit_le(p,sz,off) + find_next_zero_le_bit((unsigned long *)(p), sz, off) #define ext2_find_next_bit(p, sz, off) \ - _find_next_bit_le(p, sz, off) + find_next_le_bit((unsigned long *)(p), sz, off) /* * Minix is defined to use little-endian byte ordering. * These do not need to be atomic. */ #define minix_set_bit(nr,p) \ - __set_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) + __set_le_bit(nr, (unsigned long *)(p)) #define minix_test_bit(nr,p) \ - test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) + test_le_bit(nr, (unsigned long *)(p)) #define minix_test_and_set_bit(nr,p) \ - __test_and_set_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) + __test_and_set_le_bit(nr, (unsigned long *)(p)) #define minix_test_and_clear_bit(nr,p) \ - __test_and_clear_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) + __test_and_clear_le_bit(nr, (unsigned long *)(p)) #define minix_find_first_zero_bit(p,sz) \ - _find_first_zero_bit_le(p,sz) + find_first_zero_le_bit((unsigned long *)(p), sz) #endif /* __KERNEL__ */ -- 1.7.1.231.gd0b16 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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