From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001 From: Yuval Adam <_@yuv.al> Date: Wed, 30 Aug 2017 08:25:59 +0000 Subject: Initial file dump from open source release --- include/asm-generic/bitops/find.h | 54 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 include/asm-generic/bitops/find.h (limited to 'include/asm-generic/bitops/find.h') diff --git a/include/asm-generic/bitops/find.h b/include/asm-generic/bitops/find.h new file mode 100644 index 00000000..71c77803 --- /dev/null +++ b/include/asm-generic/bitops/find.h @@ -0,0 +1,54 @@ +#ifndef _ASM_GENERIC_BITOPS_FIND_H_ +#define _ASM_GENERIC_BITOPS_FIND_H_ + +#ifndef find_next_bit +/** + * find_next_bit - find the next set bit in a memory region + * @addr: The address to base the search on + * @offset: The bitnumber to start searching at + * @size: The bitmap size in bits + */ +extern unsigned long find_next_bit(const unsigned long *addr, unsigned long + size, unsigned long offset); +#endif + +#ifndef find_next_zero_bit +/** + * find_next_zero_bit - find the next cleared bit in a memory region + * @addr: The address to base the search on + * @offset: The bitnumber to start searching at + * @size: The bitmap size in bits + */ +extern unsigned long find_next_zero_bit(const unsigned long *addr, unsigned + long size, unsigned long offset); +#endif + +#ifdef CONFIG_GENERIC_FIND_FIRST_BIT + +/** + * find_first_bit - find the first set bit in a memory region + * @addr: The address to start the search at + * @size: The maximum size to search + * + * Returns the bit number of the first set bit. + */ +extern unsigned long find_first_bit(const unsigned long *addr, + unsigned long size); + +/** + * find_first_zero_bit - find the first cleared bit in a memory region + * @addr: The address to start the search at + * @size: The maximum size to search + * + * Returns the bit number of the first cleared bit. + */ +extern unsigned long find_first_zero_bit(const unsigned long *addr, + unsigned long size); +#else /* CONFIG_GENERIC_FIND_FIRST_BIT */ + +#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 /* CONFIG_GENERIC_FIND_FIRST_BIT */ + +#endif /*_ASM_GENERIC_BITOPS_FIND_H_ */ -- cgit v1.3.1