1*e9a93d12SJoseph Chen 2*e9a93d12SJoseph Chen #ifndef USPINLOCK_H 3*e9a93d12SJoseph Chen #define USPINLOCK_H 4*e9a93d12SJoseph Chen 5*e9a93d12SJoseph Chen typedef struct { 6*e9a93d12SJoseph Chen volatile uint32_t lock; 7*e9a93d12SJoseph Chen } uspinlock_t; 8*e9a93d12SJoseph Chen 9*e9a93d12SJoseph Chen #if CONFIG_IS_ENABLED(SMP) 10*e9a93d12SJoseph Chen void u_spin_lock(uspinlock_t *lock); 11*e9a93d12SJoseph Chen void u_spin_unlock(uspinlock_t *lock); 12*e9a93d12SJoseph Chen #else u_spin_lock(uspinlock_t * lock)13*e9a93d12SJoseph Chenstatic inline void u_spin_lock(uspinlock_t *lock) {} u_spin_unlock(uspinlock_t * lock)14*e9a93d12SJoseph Chenstatic inline void u_spin_unlock(uspinlock_t *lock) {} 15*e9a93d12SJoseph Chen #endif 16*e9a93d12SJoseph Chen 17*e9a93d12SJoseph Chen #endif