45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*
|
|
* Split spinlock implementation out into its own file, so it can be
|
|
* compiled in a FTRACE-compatible way.
|
|
*/
|
|
#include <linux/spinlock.h>
|
|
#include <linux/export.h>
|
|
#include <linux/jump_label.h>
|
|
|
|
#include <asm/paravirt.h>
|
|
|
|
__visible void __native_queued_spin_unlock(struct qspinlock *lock)
|
|
{
|
|
native_queued_spin_unlock(lock);
|
|
}
|
|
PV_CALLEE_SAVE_REGS_THUNK(__native_queued_spin_unlock);
|
|
|
|
bool pv_is_native_spin_unlock(void)
|
|
{
|
|
return pv_lock_ops.queued_spin_unlock.func ==
|
|
__raw_callee_save___native_queued_spin_unlock;
|
|
}
|
|
|
|
__visible bool __native_vcpu_is_preempted(long cpu)
|
|
{
|
|
return false;
|
|
}
|
|
PV_CALLEE_SAVE_REGS_THUNK(__native_vcpu_is_preempted);
|
|
|
|
bool pv_is_native_vcpu_is_preempted(void)
|
|
{
|
|
return pv_lock_ops.vcpu_is_preempted.func ==
|
|
__raw_callee_save___native_vcpu_is_preempted;
|
|
}
|
|
|
|
struct pv_lock_ops pv_lock_ops = {
|
|
#ifdef CONFIG_SMP
|
|
.queued_spin_lock_slowpath = native_queued_spin_lock_slowpath,
|
|
.queued_spin_unlock = PV_CALLEE_SAVE(__native_queued_spin_unlock),
|
|
.wait = paravirt_nop,
|
|
.kick = paravirt_nop,
|
|
.vcpu_is_preempted = PV_CALLEE_SAVE(__native_vcpu_is_preempted),
|
|
#endif /* SMP */
|
|
};
|
|
EXPORT_SYMBOL(pv_lock_ops);
|