1 /* 2 * Split spinlock implementation out into its own file, so it can be 3 * compiled in a FTRACE-compatible way. 4 */ 5 #include <linux/spinlock.h> 6 #include <linux/module.h> 7 8 #include <asm/paravirt.h> 9 10 static inline void default_spin_lock_flags(raw_spinlock_t * lock,unsigned long flags)11default_spin_lock_flags(raw_spinlock_t *lock, unsigned long flags) 12 { 13 __raw_spin_lock(lock); 14 } 15 16 struct pv_lock_ops pv_lock_ops = { 17 #ifdef CONFIG_SMP 18 .spin_is_locked = __ticket_spin_is_locked, 19 .spin_is_contended = __ticket_spin_is_contended, 20 21 .spin_lock = __ticket_spin_lock, 22 .spin_lock_flags = default_spin_lock_flags, 23 .spin_trylock = __ticket_spin_trylock, 24 .spin_unlock = __ticket_spin_unlock, 25 #endif 26 }; 27 EXPORT_SYMBOL(pv_lock_ops); 28 paravirt_use_bytelocks(void)29void __init paravirt_use_bytelocks(void) 30 { 31 #ifdef CONFIG_SMP 32 pv_lock_ops.spin_is_locked = __byte_spin_is_locked; 33 pv_lock_ops.spin_is_contended = __byte_spin_is_contended; 34 pv_lock_ops.spin_lock = __byte_spin_lock; 35 pv_lock_ops.spin_trylock = __byte_spin_trylock; 36 pv_lock_ops.spin_unlock = __byte_spin_unlock; 37 #endif 38 } 39