linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / include / asm-arm / bitops.h

diff --git a/include/asm-arm/bitops.h b/include/asm-arm/bitops.h
index ce923ee..d02de72 100644 (file)
--- a/include/asm-arm/bitops.h
+++ b/include/asm-arm/bitops.h
@@ -19,10 +19,11 @@
 
 #ifdef __KERNEL__
 
+#include <linux/compiler.h>
 #include <asm/system.h>
 
-#define smp_mb__before_clear_bit()     do { } while (0)
-#define smp_mb__after_clear_bit()      do { } while (0)
+#define smp_mb__before_clear_bit()     mb()
+#define smp_mb__after_clear_bit()      mb()
 
 /*
  * These functions are the basis of our bit ops.
@@ -210,8 +211,8 @@ extern void _change_bit_le(int nr, volatile unsigned long * p);
 extern int _test_and_set_bit_le(int nr, volatile unsigned long * p);
 extern int _test_and_clear_bit_le(int nr, volatile unsigned long * p);
 extern int _test_and_change_bit_le(int nr, volatile unsigned long * p);
-extern int _find_first_zero_bit_le(void * p, unsigned size);
-extern int _find_next_zero_bit_le(void * p, int size, int offset);
+extern int _find_first_zero_bit_le(const void * p, unsigned size);
+extern int _find_next_zero_bit_le(const void * p, int size, int offset);
 extern int _find_first_bit_le(const unsigned long *p, unsigned size);
 extern int _find_next_bit_le(const unsigned long *p, int size, int offset);
 
@@ -224,11 +225,12 @@ extern void _change_bit_be(int nr, volatile unsigned long * p);
 extern int _test_and_set_bit_be(int nr, volatile unsigned long * p);
 extern int _test_and_clear_bit_be(int nr, volatile unsigned long * p);
 extern int _test_and_change_bit_be(int nr, volatile unsigned long * p);
-extern int _find_first_zero_bit_be(void * p, unsigned size);
-extern int _find_next_zero_bit_be(void * p, int size, int offset);
+extern int _find_first_zero_bit_be(const void * p, unsigned size);
+extern int _find_next_zero_bit_be(const void * p, int size, int offset);
 extern int _find_first_bit_be(const unsigned long *p, unsigned size);
 extern int _find_next_bit_be(const unsigned long *p, int size, int offset);
 
+#ifndef CONFIG_SMP
 /*
  * The __* form of bitops are non-atomic and may be reordered.
  */
@@ -241,6 +243,10 @@ extern int _find_next_bit_be(const unsigned long *p, int size, int offset);
        (__builtin_constant_p(nr) ?             \
         ____atomic_##name(nr, p) :             \
         _##name##_be(nr,p))
+#else
+#define ATOMIC_BITOP_LE(name,nr,p)     _##name##_le(nr,p)
+#define ATOMIC_BITOP_BE(name,nr,p)     _##name##_be(nr,p)
+#endif
 
 #define NONATOMIC_BITOP(name,nr,p)             \
        (____nonatomic_##name(nr, p))
@@ -326,6 +332,7 @@ static inline unsigned long __ffs(unsigned long word)
  */
 
 #define fls(x) generic_fls(x)
+#define fls64(x)   generic_fls64(x)
 
 /*
  * ffs: find first bit set. This is defined the same way as
@@ -342,10 +349,10 @@ static inline unsigned long __ffs(unsigned long word)
  * the clz instruction for much better code efficiency.
  */
 
-static __inline__ int generic_fls(int x);
 #define fls(x) \
        ( __builtin_constant_p(x) ? generic_fls(x) : \
          ({ int __r; asm("clz\t%0, %1" : "=r"(__r) : "r"(x) : "cc"); 32-__r; }) )
+#define fls64(x)   generic_fls64(x)
 #define ffs(x) ({ unsigned long __t = (x); fls(__t & -__t); })
 #define __ffs(x) (ffs(x) - 1)
 #define ffz(x) __ffs( ~(x) )
@@ -356,7 +363,7 @@ static __inline__ int generic_fls(int x);
  * Find first bit set in a 168-bit bitmap, where the first
  * 128 bits are unlikely to be set.
  */
-static inline int sched_find_first_bit(unsigned long *b)
+static inline int sched_find_first_bit(const unsigned long *b)
 {
        unsigned long v;
        unsigned int off;