2 * Split spinlock implementation out into its own file, so it can be
3 * compiled in a FTRACE-compatible way.
5 #include <linux/spinlock.h>
6 #include <linux/export.h>
7 #include <linux/jump_label.h>
9 #include <asm/paravirt.h>
11 __visible void __native_queued_spin_unlock(struct qspinlock *lock)
13 native_queued_spin_unlock(lock);
15 PV_CALLEE_SAVE_REGS_THUNK(__native_queued_spin_unlock);
17 bool pv_is_native_spin_unlock(void)
19 return pv_lock_ops.queued_spin_unlock.func ==
20 __raw_callee_save___native_queued_spin_unlock;
23 __visible bool __native_vcpu_is_preempted(int cpu)
27 PV_CALLEE_SAVE_REGS_THUNK(__native_vcpu_is_preempted);
29 bool pv_is_native_vcpu_is_preempted(void)
31 return pv_lock_ops.vcpu_is_preempted.func ==
32 __raw_callee_save___native_vcpu_is_preempted;
35 struct pv_lock_ops pv_lock_ops = {
37 .queued_spin_lock_slowpath = native_queued_spin_lock_slowpath,
38 .queued_spin_unlock = PV_CALLEE_SAVE(__native_queued_spin_unlock),
41 .vcpu_is_preempted = PV_CALLEE_SAVE(__native_vcpu_is_preempted),
44 EXPORT_SYMBOL(pv_lock_ops);
46 struct static_key paravirt_ticketlocks_enabled = STATIC_KEY_INIT_FALSE;
47 EXPORT_SYMBOL(paravirt_ticketlocks_enabled);