blob: 6d4bf812af45d9ed144ee33faf9f906ed9e107c6 [file] [log] [blame]
Jeremy Fitzhardinged5de8842008-07-23 13:28:58 -07001/*
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>
Paul Gortmaker186f4362016-07-13 20:18:56 -04006#include <linux/export.h>
Jeremy Fitzhardinge96f853e2013-08-09 19:51:58 +05307#include <linux/jump_label.h>
Jeremy Fitzhardinged5de8842008-07-23 13:28:58 -07008
9#include <asm/paravirt.h>
10
Peter Zijlstra (Intel)f233f7f2015-04-24 14:56:38 -040011__visible void __native_queued_spin_unlock(struct qspinlock *lock)
12{
13 native_queued_spin_unlock(lock);
14}
Peter Zijlstra (Intel)f233f7f2015-04-24 14:56:38 -040015PV_CALLEE_SAVE_REGS_THUNK(__native_queued_spin_unlock);
16
17bool pv_is_native_spin_unlock(void)
18{
19 return pv_lock_ops.queued_spin_unlock.func ==
20 __raw_callee_save___native_queued_spin_unlock;
21}
Peter Zijlstra (Intel)f233f7f2015-04-24 14:56:38 -040022
Peter Zijlstra3cded412016-11-15 16:47:06 +010023__visible bool __native_vcpu_is_preempted(int cpu)
Pan Xinhui446f3dc2016-11-02 05:08:33 -040024{
Peter Zijlstra3cded412016-11-15 16:47:06 +010025 return false;
26}
27PV_CALLEE_SAVE_REGS_THUNK(__native_vcpu_is_preempted);
28
29bool pv_is_native_vcpu_is_preempted(void)
30{
31 return pv_lock_ops.vcpu_is_preempted.func ==
32 __raw_callee_save___native_vcpu_is_preempted;
Pan Xinhui446f3dc2016-11-02 05:08:33 -040033}
34
Jeremy Fitzhardinged5de8842008-07-23 13:28:58 -070035struct pv_lock_ops pv_lock_ops = {
36#ifdef CONFIG_SMP
Peter Zijlstra (Intel)f233f7f2015-04-24 14:56:38 -040037 .queued_spin_lock_slowpath = native_queued_spin_lock_slowpath,
38 .queued_spin_unlock = PV_CALLEE_SAVE(__native_queued_spin_unlock),
39 .wait = paravirt_nop,
40 .kick = paravirt_nop,
Peter Zijlstra3cded412016-11-15 16:47:06 +010041 .vcpu_is_preempted = PV_CALLEE_SAVE(__native_vcpu_is_preempted),
Peter Zijlstra (Intel)f233f7f2015-04-24 14:56:38 -040042#endif /* SMP */
Jeremy Fitzhardinged5de8842008-07-23 13:28:58 -070043};
Jeremy Fitzhardinge25258ef2008-08-20 11:31:07 -070044EXPORT_SYMBOL(pv_lock_ops);
Jeremy Fitzhardinged5de8842008-07-23 13:28:58 -070045
Jeremy Fitzhardinge96f853e2013-08-09 19:51:58 +053046struct static_key paravirt_ticketlocks_enabled = STATIC_KEY_INIT_FALSE;
47EXPORT_SYMBOL(paravirt_ticketlocks_enabled);