62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
#ifndef KERNEL_LOCKS_H_
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#define KERNEL_LOCKS_H_
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#include <kernel/compiler.h>
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#include <kernel/machine/hwlock.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef __aligned(8) ml_hwlock_t spin_lock_t;
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#define SPIN_LOCK_INIT ML_HWLOCK_INIT
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#define spin_lock(lck) ml_hwlock_lock(lck);
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#define spin_unlock(lck) ml_hwlock_unlock(lck);
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#define spin_lock_irq(lck) ml_hwlock_lock_irq(lck);
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#define spin_unlock_irq(lck) ml_hwlock_unlock_irq(lck);
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#define spin_lock_irqsave(lck, flags) ml_hwlock_lock_irqsave(lck, flags);
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#define spin_unlock_irqrestore(lck, flags) \
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ml_hwlock_unlock_irqrestore(lck, flags);
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static inline void spin_lock_pair_irqsave(
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spin_lock_t *a,
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spin_lock_t *b,
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unsigned long *flags)
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{
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if (a == b) {
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spin_lock_irqsave(a, flags);
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} else if (a < b) {
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spin_lock_irqsave(a, flags);
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spin_lock(b);
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} else {
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spin_lock_irqsave(b, flags);
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spin_lock(a);
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}
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}
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static inline void spin_unlock_pair_irqrestore(
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spin_lock_t *a,
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spin_lock_t *b,
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unsigned long flags)
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{
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if (a == b) {
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spin_unlock_irqrestore(a, flags);
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} else if (a < b) {
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spin_unlock(b);
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spin_unlock_irqrestore(a, flags);
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} else {
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spin_unlock(a);
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spin_unlock_irqrestore(b, flags);
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}
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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