From: akinobu.mita@gmail.com (Akinobu Mita)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 04/22] arm: introduce little-endian bitops
Date: Thu, 21 Oct 2010 23:40:59 +0900 [thread overview]
Message-ID: <1287672077-5797-5-git-send-email-akinobu.mita@gmail.com> (raw)
In-Reply-To: <1287672077-5797-1-git-send-email-akinobu.mita@gmail.com>
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 <akinobu.mita@gmail.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: linux-arm-kernel at 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 <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(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
parent reply other threads:[~2010-10-21 14:40 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <1287672077-5797-1-git-send-email-akinobu.mita@gmail.com>]
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