#ifndef __ASM_SPINLOCK_H #define __ASM_SPINLOCK_H #include <asm/barrier.h> #include <asm/processor.h> #ifdef [31mCONFIG_METAG_ATOMICITY_LOCK1[0m #include <asm/spinlock_lock1.h> #else #include <asm/spinlock_lnkget.h> #endif /* * both lock1 and lnkget are test-and-set spinlocks with 0 unlocked and 1 * locked. */ static inline void arch_spin_unlock_wait(arch_spinlock_t *lock) { smp_cond_load_acquire(&lock->lock, !VAL); } #define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock) #define arch_read_lock_flags(lock, flags) arch_read_lock(lock) #define arch_write_lock_flags(lock, flags) arch_write_lock(lock) #define arch_spin_relax(lock) cpu_relax() #define arch_read_relax(lock) cpu_relax() #define arch_write_relax(lock) cpu_relax() #endif /* __ASM_SPINLOCK_H */ |