文件操作 - spinlock.h
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文件: /usr/src/linux-headers-5.15.0-113/arch/arm64/include/asm/spinlock.h
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/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2012 ARM Ltd. */ #ifndef __ASM_SPINLOCK_H #define __ASM_SPINLOCK_H #include <asm/qspinlock.h> #include <asm/qrwlock.h> /* See include/linux/spinlock.h */ #define smp_mb__after_spinlock() smp_mb() /* * Changing this will break osq_lock() thanks to the call inside * smp_cond_load_relaxed(). * * See: * https://lore.kernel.org/lkml/20200110100612.GC2827@hirez.programming.kicks-ass.net */ #define vcpu_is_preempted vcpu_is_preempted static inline bool vcpu_is_preempted(int cpu) { return false; } #endif /* __ASM_SPINLOCK_H */
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