https://github.com/torvalds/linux
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Tip revision: af42d3466bdc8f39806b26f593604fdc54140bcb authored by Linus Torvalds on 17 November 2019, 22:47:30 UTC
Linux 5.4-rc8
Tip revision: af42d34
paravirt-spinlocks.c
// SPDX-License-Identifier: GPL-2.0
/*
 * 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_ops.lock.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_ops.lock.vcpu_is_preempted.func ==
		__raw_callee_save___native_vcpu_is_preempted;
}
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