include/linux/bitops.h
changeset 2 d1f6d8b6f81c
parent 0 aa628870c1d3
equal deleted inserted replaced
1:0056487c491e 2:d1f6d8b6f81c
     6 #define BIT(nr)			(1UL << (nr))
     6 #define BIT(nr)			(1UL << (nr))
     7 #define BIT_MASK(nr)		(1UL << ((nr) % BITS_PER_LONG))
     7 #define BIT_MASK(nr)		(1UL << ((nr) % BITS_PER_LONG))
     8 #define BIT_WORD(nr)		((nr) / BITS_PER_LONG)
     8 #define BIT_WORD(nr)		((nr) / BITS_PER_LONG)
     9 #define BITS_PER_BYTE		8
     9 #define BITS_PER_BYTE		8
    10 #define BITS_TO_LONGS(nr)	DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
    10 #define BITS_TO_LONGS(nr)	DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
       
    11 #else
       
    12 
       
    13 #error HASS
       
    14 
       
    15   AAAAAAAAAAAAAAAAAAAAARRRRRRRHHHHHHHHHHHHHHHHHH;
       
    16 
    11 #endif
    17 #endif
    12 
    18 
    13 /*
    19 /*
    14  * Include this here because some architectures need generic_ffs/fls in
    20  * Include this here because some architectures need generic_ffs/fls in
    15  * scope
    21  * scope
   132  *
   138  *
   133  * Returns the bit number of the first cleared bit.
   139  * Returns the bit number of the first cleared bit.
   134  */
   140  */
   135 extern unsigned long find_first_zero_bit(const unsigned long *addr,
   141 extern unsigned long find_first_zero_bit(const unsigned long *addr,
   136 					 unsigned long size);
   142 					 unsigned long size);
       
   143 #endif /* CONFIG_GENERIC_FIND_FIRST_BIT */
   137 
   144 
   138 #endif /* CONFIG_GENERIC_FIND_FIRST_BIT */
   145 #ifdef CONFIG_GENERIC_FIND_LAST_BIT
       
   146 /**
       
   147  * find_last_bit - find the last set bit in a memory region
       
   148  * @addr: The address to start the search at
       
   149  * @size: The maximum size to search
       
   150  *
       
   151  * Returns the bit number of the first set bit, or size.
       
   152  */
       
   153 extern unsigned long find_last_bit(const unsigned long *addr,
       
   154 				   unsigned long size);
       
   155 #endif /* CONFIG_GENERIC_FIND_LAST_BIT */
   139 
   156 
   140 #ifdef CONFIG_GENERIC_FIND_NEXT_BIT
   157 #ifdef CONFIG_GENERIC_FIND_NEXT_BIT
   141 
   158 
   142 /**
   159 /**
   143  * find_next_bit - find the next set bit in a memory region
   160  * find_next_bit - find the next set bit in a memory region