From mboxrd@z Thu Jan 1 00:00:00 1970 From: Akinobu Mita Subject: [PATCH v4 05/24] arm: introduce little-endian bitops Date: Sun, 16 Jan 2011 22:08:34 +0900 Message-ID: <1295183333-13802-6-git-send-email-akinobu.mita@gmail.com> References: <1295183333-13802-1-git-send-email-akinobu.mita@gmail.com> Return-path: Received: from mail-iw0-f174.google.com ([209.85.214.174]:49634 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752476Ab1APNIf (ORCPT ); Sun, 16 Jan 2011 08:08:35 -0500 In-Reply-To: <1295183333-13802-1-git-send-email-akinobu.mita@gmail.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, akpm@linux-foundation.org Cc: Akinobu Mita , Russell King Introduce little-endian bit operations by renaming native ext2 bit operations. The ext2 bit operations are kept as wrapper macros using little-endian bit operations to maintain bisectability until the conversions are finished. Signed-off-by: Akinobu Mita Acked-by: Russell King Signed-off-by: Andrew Morton --- Change from v3: - change to the post-fix notation e.g. s/test_le_bit/test_bit_le/ The whole series is available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/mita/linux-2.6.git le-bitops-v4 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..37736f6 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 #include +#define __set_bit_le(nr, p) \ + __set_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define __clear_bit_le(nr, p) \ + __clear_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define __test_and_set_bit_le(nr, p) \ + __test_and_set_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define test_and_set_bit_le(nr, p) \ + test_and_set_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define __test_and_clear_bit_le(nr, p) \ + __test_and_clear_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define test_and_clear_bit_le(nr, p) \ + test_and_clear_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define test_bit_le(nr, p) \ + test_bit(WORD_BITOFF_TO_LE(nr), (p)) +#define find_first_zero_bit_le(p, sz) \ + _find_first_zero_bit_le(p, sz) +#define find_next_zero_bit_le(p, sz, off) \ + _find_next_zero_bit_le(p, sz, off) +#define find_next_bit_le(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_bit_le(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_bit_le(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_bit_le(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_bit_le(nr, (unsigned long *)(p)) #define ext2_test_bit(nr,p) \ - test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) + test_bit_le(nr, (unsigned long *)(p)) #define ext2_find_first_zero_bit(p,sz) \ - _find_first_zero_bit_le(p,sz) + find_first_zero_bit_le((unsigned long *)(p), sz) #define ext2_find_next_zero_bit(p,sz,off) \ - _find_next_zero_bit_le(p,sz,off) + find_next_zero_bit_le((unsigned long *)(p), sz, off) #define ext2_find_next_bit(p, sz, off) \ - _find_next_bit_le(p, sz, off) + find_next_bit_le((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_bit_le(nr, (unsigned long *)(p)) #define minix_test_bit(nr,p) \ - test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) + test_bit_le(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_bit_le(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_bit_le(nr, (unsigned long *)(p)) #define minix_find_first_zero_bit(p,sz) \ - _find_first_zero_bit_le(p,sz) + find_first_zero_bit_le((unsigned long *)(p), sz) #endif /* __KERNEL__ */ -- 1.7.3.4