/* * Split spinlock implementation out into its own file, so it can be * compiled in a FTRACE-compatible way. */ #include #include #include static void default_spin_lock_flags(struct raw_spinlock *lock, unsigned long flags) { __raw_spin_lock(lock); } struct pv_lock_ops pv_lock_ops = { #ifdef CONFIG_SMP .spin_is_locked = __ticket_spin_is_locked, .spin_is_contended = __ticket_spin_is_contended, .spin_lock = __ticket_spin_lock, .spin_lock_flags = default_spin_lock_flags, .spin_trylock = __ticket_spin_trylock, .spin_unlock = __ticket_spin_unlock, #endif }; EXPORT_SYMBOL(pv_lock_ops); void __init paravirt_use_bytelocks(void) { #ifdef CONFIG_SMP pv_lock_ops.spin_is_locked = __byte_spin_is_locked; pv_lock_ops.spin_is_contended = __byte_spin_is_contended; pv_lock_ops.spin_lock = __byte_spin_lock; pv_lock_ops.spin_trylock = __byte_spin_trylock; pv_lock_ops.spin_unlock = __byte_spin_unlock; #endif }