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authorAkinobu Mita <mita@miraclelinux.com>2006-03-26 01:39:11 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-26 08:57:11 -0800
commitc7f612cdf091def01454e7e132c7d7a3f419fbc4 (patch)
tree01b3fbc080a0a513dab60622aad0409d197b570a /include/asm-generic/bitops
parent2dfc383ad587bbead84739a9ff9273df3eda983d (diff)
downloadop-kernel-dev-c7f612cdf091def01454e7e132c7d7a3f419fbc4.zip
op-kernel-dev-c7f612cdf091def01454e7e132c7d7a3f419fbc4.tar.gz
[PATCH] bitops: generic find_{next,first}{,_zero}_bit()
This patch introduces the C-language equivalents of the functions below: unsigned logn find_next_bit(const unsigned long *addr, unsigned long size, unsigned long offset); unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size, unsigned long offset); unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size); unsigned long find_first_bit(const unsigned long *addr, unsigned long size); In include/asm-generic/bitops/find.h This code largely copied from: arch/powerpc/lib/bitops.c Signed-off-by: Akinobu Mita <mita@miraclelinux.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-generic/bitops')
-rw-r--r--include/asm-generic/bitops/find.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-generic/bitops/find.h b/include/asm-generic/bitops/find.h
new file mode 100644
index 0000000..72a51e5
--- /dev/null
+++ b/include/asm-generic/bitops/find.h
@@ -0,0 +1,13 @@
+#ifndef _ASM_GENERIC_BITOPS_FIND_H_
+#define _ASM_GENERIC_BITOPS_FIND_H_
+
+extern unsigned long find_next_bit(const unsigned long *addr, unsigned long
+ size, unsigned long offset);
+
+extern unsigned long find_next_zero_bit(const unsigned long *addr, unsigned
+ long size, unsigned long offset);
+
+#define find_first_bit(addr, size) find_next_bit((addr), (size), 0)
+#define find_first_zero_bit(addr, size) find_next_zero_bit((addr), (size), 0)
+
+#endif /*_ASM_GENERIC_BITOPS_FIND_H_ */
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