From mboxrd@z Thu Jan 1 00:00:00 1970 From: Akinobu Mita Subject: [PATCH v2 04/22] arm: introduce little-endian bitops Date: Thu, 21 Oct 2010 23:40:59 +0900 Message-ID: <1287672077-5797-5-git-send-email-akinobu.mita@gmail.com> References: <1287672077-5797-1-git-send-email-akinobu.mita@gmail.com> Return-path: In-Reply-To: <1287672077-5797-1-git-send-email-akinobu.mita@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Arnd Bergmann , Christoph Hellwig , Andrew Morton Cc: Akinobu Mita , Russell King , linux-arm-kernel@lists.infradead.org List-Id: linux-arch.vger.kernel.org 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 Cc: Russell King Cc: linux-arm-kernel@lists.infradead.org --- Change from v1: fix argument of test_and_{set,clear}_le_bit() 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..29adaca 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_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(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(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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-gy0-f174.google.com ([209.85.160.174]:55291 "EHLO mail-gy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753129Ab0JUOnO (ORCPT ); Thu, 21 Oct 2010 10:43:14 -0400 From: Akinobu Mita Subject: [PATCH v2 04/22] arm: introduce little-endian bitops Date: Thu, 21 Oct 2010 23:40:59 +0900 Message-ID: <1287672077-5797-5-git-send-email-akinobu.mita@gmail.com> In-Reply-To: <1287672077-5797-1-git-send-email-akinobu.mita@gmail.com> References: <1287672077-5797-1-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, Arnd Bergmann , Christoph Hellwig , Andrew Morton Cc: Akinobu Mita , Russell King , linux-arm-kernel@lists.infradead.org Message-ID: <20101021144059.En5AWN557RntzIP_5RxfYFyduTDYMhgtV2wIaEBL8Bs@z> 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 Cc: Russell King Cc: linux-arm-kernel@lists.infradead.org --- Change from v1: fix argument of test_and_{set,clear}_le_bit() 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..29adaca 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_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(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(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