fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-sparc64 / bitops.h
blob3d5e1af84723bade56ba80e46e98944d14d0e4d7
1 /* $Id: bitops.h,v 1.39 2002/01/30 01:40:00 davem Exp $
2 * bitops.h: Bit string operations on the V9.
4 * Copyright 1996, 1997 David S. Miller (davem@caip.rutgers.edu)
5 */
7 #ifndef _SPARC64_BITOPS_H
8 #define _SPARC64_BITOPS_H
10 #include <linux/compiler.h>
11 #include <asm/byteorder.h>
13 extern int test_and_set_bit(unsigned long nr, volatile unsigned long *addr);
14 extern int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr);
15 extern int test_and_change_bit(unsigned long nr, volatile unsigned long *addr);
16 extern void set_bit(unsigned long nr, volatile unsigned long *addr);
17 extern void clear_bit(unsigned long nr, volatile unsigned long *addr);
18 extern void change_bit(unsigned long nr, volatile unsigned long *addr);
20 #include <asm-generic/bitops/non-atomic.h>
22 #ifdef CONFIG_SMP
23 #define smp_mb__before_clear_bit() membar_storeload_loadload()
24 #define smp_mb__after_clear_bit() membar_storeload_storestore()
25 #else
26 #define smp_mb__before_clear_bit() barrier()
27 #define smp_mb__after_clear_bit() barrier()
28 #endif
30 #include <asm-generic/bitops/ffz.h>
31 #include <asm-generic/bitops/__ffs.h>
32 #include <asm-generic/bitops/fls.h>
33 #include <asm-generic/bitops/fls64.h>
35 #ifdef __KERNEL__
37 #include <asm-generic/bitops/sched.h>
38 #include <asm-generic/bitops/ffs.h>
41 * hweightN: returns the hamming weight (i.e. the number
42 * of bits set) of a N-bit word
45 #ifdef ULTRA_HAS_POPULATION_COUNT
47 static inline unsigned int hweight64(unsigned long w)
49 unsigned int res;
51 __asm__ ("popc %1,%0" : "=r" (res) : "r" (w));
52 return res;
55 static inline unsigned int hweight32(unsigned int w)
57 unsigned int res;
59 __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffffffff));
60 return res;
63 static inline unsigned int hweight16(unsigned int w)
65 unsigned int res;
67 __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffff));
68 return res;
71 static inline unsigned int hweight8(unsigned int w)
73 unsigned int res;
75 __asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xff));
76 return res;
79 #else
81 #include <asm-generic/bitops/hweight.h>
83 #endif
84 #endif /* __KERNEL__ */
86 #include <asm-generic/bitops/find.h>
88 #ifdef __KERNEL__
90 #include <asm-generic/bitops/ext2-non-atomic.h>
92 #define ext2_set_bit_atomic(lock,nr,addr) \
93 test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr))
94 #define ext2_clear_bit_atomic(lock,nr,addr) \
95 test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))
97 #include <asm-generic/bitops/minix.h>
99 #endif /* __KERNEL__ */
101 #endif /* defined(_SPARC64_BITOPS_H) */