From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753353Ab1AVNN7 (ORCPT ); Sat, 22 Jan 2011 08:13:59 -0500 Received: from mail-iy0-f174.google.com ([209.85.210.174]:52422 "EHLO mail-iy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753073Ab1AVNN5 (ORCPT ); Sat, 22 Jan 2011 08:13:57 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=Wmgw5XNL/qool+24UMQN5vIIv5iL92N1P/zaTEUzRS/6WVazH2BVo9tmeaz+njoWIh HrOp1mSJgOKMp31Ufd8R4+UYYdXkj8LFfkWPtUL7Z+E6D0Zg85Ia4Q/e9uDlUpIgGDFU jxsQ/oPo4ORuwsGOScCMv8jXp4MXYCY5aS9rQ= From: Akinobu Mita To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, akpm@linux-foundation.org Cc: Akinobu Mita , Russell King Subject: [PATCH v5 08/27] arm: introduce little-endian bitops Date: Sat, 22 Jan 2011 22:13:40 +0900 Message-Id: <1295702039-23186-9-git-send-email-akinobu.mita@gmail.com> X-Mailer: git-send-email 1.7.3.4 In-Reply-To: <1295702039-23186-1-git-send-email-akinobu.mita@gmail.com> References: <1295702039-23186-1-git-send-email-akinobu.mita@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce little-endian bit operations by renaming native ext2 bit operations. The ext2 and minix 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 Signed-off-by: Andrew Morton --- Change from v4: - add casts in the macro to take any pointer types - drop acked-by line because enough changes has been made The whole series is available in the git branch at: git://git.kernel.org/pub/scm/linux/kernel/git/mita/linux-2.6.git le-bitops-v5 arch/arm/include/asm/bitops.h | 61 +++++++++++++++++++++++----------------- 1 files changed, 35 insertions(+), 26 deletions(-) diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h index 7b1bb2b..872d502 100644 --- a/arch/arm/include/asm/bitops.h +++ b/arch/arm/include/asm/bitops.h @@ -303,41 +303,50 @@ static inline int fls(int x) #include #include +#define __set_bit_le(nr, p) \ + __set_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) +#define __clear_bit_le(nr, p) \ + __clear_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) +#define __test_and_set_bit_le(nr, p) \ + __test_and_set_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) +#define test_and_set_bit_le(nr, p) \ + test_and_set_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) +#define __test_and_clear_bit_le(nr, p) \ + __test_and_clear_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) +#define test_and_clear_bit_le(nr, p) \ + test_and_clear_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) +#define test_bit_le(nr, p) \ + test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(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((unsigned long *)(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)) -#define ext2_set_bit_atomic(lock,nr,p) \ - test_and_set_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) -#define ext2_clear_bit(nr,p) \ - __test_and_clear_bit(WORD_BITOFF_TO_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)) -#define ext2_test_bit(nr,p) \ - test_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) -#define ext2_find_first_zero_bit(p,sz) \ - _find_first_zero_bit_le(p,sz) -#define ext2_find_next_zero_bit(p,sz,off) \ - _find_next_zero_bit_le(p,sz,off) -#define ext2_find_next_bit(p, sz, off) \ - _find_next_bit_le(p, sz, off) +#define ext2_set_bit __test_and_set_bit_le +#define ext2_set_bit_atomic(lock, nr, p) \ + test_and_set_bit_le(nr, p) +#define ext2_clear_bit __test_and_clear_bit_le +#define ext2_clear_bit_atomic(lock, nr, p) \ + test_and_clear_bit_le(nr, p) +#define ext2_test_bit test_bit_le +#define ext2_find_first_zero_bit find_first_zero_bit_le +#define ext2_find_next_zero_bit find_next_zero_bit_le +#define ext2_find_next_bit find_next_bit_le /* * 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)) -#define minix_test_bit(nr,p) \ - test_bit(WORD_BITOFF_TO_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)) -#define minix_test_and_clear_bit(nr,p) \ - __test_and_clear_bit(WORD_BITOFF_TO_LE(nr), (unsigned long *)(p)) -#define minix_find_first_zero_bit(p,sz) \ - _find_first_zero_bit_le(p,sz) +#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__ */ -- 1.7.3.4