diff options
Diffstat (limited to 'src/arch/x86')
| -rw-r--r-- | src/arch/x86/include/arch/smp/spinlock.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/arch/x86/include/arch/smp/spinlock.h b/src/arch/x86/include/arch/smp/spinlock.h index a05d47a233..799ac2c8b8 100644 --- a/src/arch/x86/include/arch/smp/spinlock.h +++ b/src/arch/x86/include/arch/smp/spinlock.h @@ -29,6 +29,7 @@ typedef struct { #define barrier() __asm__ __volatile__("" : : : "memory") #define spin_is_locked(x) (*(volatile char *)(&(x)->lock) <= 0) #define spin_unlock_wait(x) do { barrier(); } while (spin_is_locked(x)) +#undef barrier #define spin_lock_string \ "\n1:\t" \ @@ -65,7 +66,6 @@ static __always_inline void spin_unlock(spinlock_t *lock) #else #define DECLARE_SPIN_LOCK(x) -#define barrier() do {} while (0) #define spin_is_locked(lock) 0 #define spin_unlock_wait(lock) do {} while (0) #define spin_lock(lock) do {} while (0) |