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/export.h> 7 #include <linux/jump_label.h> 8 9 #include <asm/paravirt.h> 10 __native_queued_spin_unlock(struct qspinlock * lock)11__visible void __native_queued_spin_unlock(struct qspinlock *lock) 12 { 13 native_queued_spin_unlock(lock); 14 } 15 16 PV_CALLEE_SAVE_REGS_THUNK(__native_queued_spin_unlock); 17 pv_is_native_spin_unlock(void)18bool pv_is_native_spin_unlock(void) 19 { 20 return pv_lock_ops.queued_spin_unlock.func == 21 __raw_callee_save___native_queued_spin_unlock; 22 } 23 24 struct pv_lock_ops pv_lock_ops = { 25 #ifdef CONFIG_SMP 26 .queued_spin_lock_slowpath = native_queued_spin_lock_slowpath, 27 .queued_spin_unlock = PV_CALLEE_SAVE(__native_queued_spin_unlock), 28 .wait = paravirt_nop, 29 .kick = paravirt_nop, 30 #endif /* SMP */ 31 }; 32 EXPORT_SYMBOL(pv_lock_ops); 33 34 struct static_key paravirt_ticketlocks_enabled = STATIC_KEY_INIT_FALSE; 35 EXPORT_SYMBOL(paravirt_ticketlocks_enabled); 36