include/asm/spinlock.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * Copyright (C) 2012 ARM Ltd.
0004  */
0005 #ifndef __ASM_SPINLOCK_H
0006 #define __ASM_SPINLOCK_H
0007
0008 #include <asm/qspinlock.h>
0009 #include <asm/qrwlock.h>
0010
0011 /* See include/linux/spinlock.h */
0012 #define smp_mb__after_spinlock()    smp_mb()
0013
0014 /*
0015  * Changing this will break osq_lock() thanks to the call inside
0016  * smp_cond_load_relaxed().
0017  *
0018  * See:
0019  * https://lore.kernel.org/lkml/20200110100612.GC2827@hirez.programming.kicks-ass.net
0020  */
0021 #define vcpu_is_preempted vcpu_is_preempted
0022 static inline bool vcpu_is_preempted(int cpu)
0023 {
0024     return false;
0025 }
0026
0027 #endif /* __ASM_SPINLOCK_H */