rqspinlock.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_X86_RQSPINLOCK_H
 3#define _ASM_X86_RQSPINLOCK_H
 4
 5#include <asm/paravirt.h>
 6
 7#ifdef CONFIG_PARAVIRT
 8DECLARE_STATIC_KEY_FALSE(virt_spin_lock_key);
 9
10#define resilient_virt_spin_lock_enabled resilient_virt_spin_lock_enabled
11static __always_inline bool resilient_virt_spin_lock_enabled(void)
12{
13       return static_branch_likely(&virt_spin_lock_key);
14}
15
16#ifdef CONFIG_QUEUED_SPINLOCKS
17typedef struct qspinlock rqspinlock_t;
18#else
19typedef struct rqspinlock rqspinlock_t;
20#endif
21extern int resilient_tas_spin_lock(rqspinlock_t *lock);
22
23#define resilient_virt_spin_lock resilient_virt_spin_lock
24static inline int resilient_virt_spin_lock(rqspinlock_t *lock)
25{
26	return resilient_tas_spin_lock(lock);
27}
28
29#endif /* CONFIG_PARAVIRT */
30
31#include <asm-generic/rqspinlock.h>
32
33#endif /* _ASM_X86_RQSPINLOCK_H */