diff options
Diffstat (limited to 'arch/parisc/lib/bitops.c')
| -rw-r--r-- | arch/parisc/lib/bitops.c | 44 |
1 files changed, 19 insertions, 25 deletions
diff --git a/arch/parisc/lib/bitops.c b/arch/parisc/lib/bitops.c index 70ffbcf889b8..9df810050642 100644 --- a/arch/parisc/lib/bitops.c +++ b/arch/parisc/lib/bitops.c @@ -18,7 +18,7 @@ arch_spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] __lock_aligned = { #endif #ifdef CONFIG_64BIT -unsigned long __xchg64(unsigned long x, unsigned long *ptr) +unsigned long notrace __xchg64(unsigned long x, volatile unsigned long *ptr) { unsigned long temp, flags; @@ -30,7 +30,7 @@ unsigned long __xchg64(unsigned long x, unsigned long *ptr) } #endif -unsigned long __xchg32(int x, int *ptr) +unsigned long notrace __xchg32(int x, volatile int *ptr) { unsigned long flags; long temp; @@ -43,7 +43,7 @@ unsigned long __xchg32(int x, int *ptr) } -unsigned long __xchg8(char x, char *ptr) +unsigned long notrace __xchg8(char x, volatile char *ptr) { unsigned long flags; long temp; @@ -56,26 +56,20 @@ unsigned long __xchg8(char x, char *ptr) } -u64 __cmpxchg_u64(volatile u64 *ptr, u64 old, u64 new) -{ - unsigned long flags; - u64 prev; - - _atomic_spin_lock_irqsave(ptr, flags); - if ((prev = *ptr) == old) - *ptr = new; - _atomic_spin_unlock_irqrestore(ptr, flags); - return prev; -} +#define CMPXCHG(T) \ + T notrace __cmpxchg_##T(volatile T *ptr, T old, T new) \ + { \ + unsigned long flags; \ + T prev; \ + \ + _atomic_spin_lock_irqsave(ptr, flags); \ + if ((prev = *ptr) == old) \ + *ptr = new; \ + _atomic_spin_unlock_irqrestore(ptr, flags); \ + return prev; \ + } -unsigned long __cmpxchg_u32(volatile unsigned int *ptr, unsigned int old, unsigned int new) -{ - unsigned long flags; - unsigned int prev; - - _atomic_spin_lock_irqsave(ptr, flags); - if ((prev = *ptr) == old) - *ptr = new; - _atomic_spin_unlock_irqrestore(ptr, flags); - return (unsigned long)prev; -} +CMPXCHG(u64) +CMPXCHG(u32) +CMPXCHG(u16) +CMPXCHG(u8) |