125 lines
4.6 KiB
C
125 lines
4.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_LOCAL_LOCK_H
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#define _LINUX_LOCAL_LOCK_H
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#include <linux/local_lock_internal.h>
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/**
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* local_lock_init - Runtime initialize a lock instance
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* @lock: The lock variable
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*/
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#define local_lock_init(lock) __local_lock_init(lock)
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/**
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* local_lock - Acquire a per CPU local lock
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* @lock: The lock variable
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*/
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#define local_lock(lock) __local_lock(__this_cpu_local_lock(lock))
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/**
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* local_lock_irq - Acquire a per CPU local lock and disable interrupts
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* @lock: The lock variable
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*/
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#define local_lock_irq(lock) __local_lock_irq(__this_cpu_local_lock(lock))
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/**
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* local_lock_irqsave - Acquire a per CPU local lock, save and disable
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* interrupts
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* @lock: The lock variable
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* @flags: Storage for interrupt flags
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*/
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#define local_lock_irqsave(lock, flags) \
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__local_lock_irqsave(__this_cpu_local_lock(lock), flags)
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/**
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* local_unlock - Release a per CPU local lock
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* @lock: The lock variable
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*/
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#define local_unlock(lock) __local_unlock(__this_cpu_local_lock(lock))
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/**
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* local_unlock_irq - Release a per CPU local lock and enable interrupts
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* @lock: The lock variable
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*/
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#define local_unlock_irq(lock) __local_unlock_irq(__this_cpu_local_lock(lock))
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/**
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* local_unlock_irqrestore - Release a per CPU local lock and restore
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* interrupt flags
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* @lock: The lock variable
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* @flags: Interrupt flags to restore
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*/
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#define local_unlock_irqrestore(lock, flags) \
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__local_unlock_irqrestore(__this_cpu_local_lock(lock), flags)
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/**
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* local_trylock_init - Runtime initialize a lock instance
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* @lock: The lock variable
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*/
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#define local_trylock_init(lock) __local_trylock_init(lock)
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/**
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* local_trylock - Try to acquire a per CPU local lock
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* @lock: The lock variable
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*
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* The function can be used in any context such as NMI or HARDIRQ. Due to
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* locking constrains it will _always_ fail to acquire the lock in NMI or
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* HARDIRQ context on PREEMPT_RT.
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*/
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#define local_trylock(lock) __local_trylock(__this_cpu_local_lock(lock))
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#define local_lock_is_locked(lock) __local_lock_is_locked(lock)
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/**
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* local_trylock_irqsave - Try to acquire a per CPU local lock, save and disable
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* interrupts if acquired
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* @lock: The lock variable
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* @flags: Storage for interrupt flags
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*
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* The function can be used in any context such as NMI or HARDIRQ. Due to
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* locking constrains it will _always_ fail to acquire the lock in NMI or
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* HARDIRQ context on PREEMPT_RT.
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*/
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#define local_trylock_irqsave(lock, flags) \
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__local_trylock_irqsave(__this_cpu_local_lock(lock), flags)
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DEFINE_LOCK_GUARD_1(local_lock, local_lock_t __percpu,
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local_lock(_T->lock),
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local_unlock(_T->lock))
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DEFINE_LOCK_GUARD_1(local_lock_irq, local_lock_t __percpu,
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local_lock_irq(_T->lock),
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local_unlock_irq(_T->lock))
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DEFINE_LOCK_GUARD_1(local_lock_irqsave, local_lock_t __percpu,
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local_lock_irqsave(_T->lock, _T->flags),
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local_unlock_irqrestore(_T->lock, _T->flags),
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unsigned long flags)
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#define local_lock_nested_bh(_lock) \
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__local_lock_nested_bh(__this_cpu_local_lock(_lock))
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#define local_unlock_nested_bh(_lock) \
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__local_unlock_nested_bh(__this_cpu_local_lock(_lock))
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DEFINE_LOCK_GUARD_1(local_lock_nested_bh, local_lock_t __percpu,
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local_lock_nested_bh(_T->lock),
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local_unlock_nested_bh(_T->lock))
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DEFINE_LOCK_GUARD_1(local_lock_init, local_lock_t, local_lock_init(_T->lock), /* */)
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DECLARE_LOCK_GUARD_1_ATTRS(local_lock, __acquires(_T), __releases(*(local_lock_t __percpu **)_T))
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#define class_local_lock_constructor(_T) WITH_LOCK_GUARD_1_ATTRS(local_lock, _T)
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DECLARE_LOCK_GUARD_1_ATTRS(local_lock_irq, __acquires(_T), __releases(*(local_lock_t __percpu **)_T))
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#define class_local_lock_irq_constructor(_T) WITH_LOCK_GUARD_1_ATTRS(local_lock_irq, _T)
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DECLARE_LOCK_GUARD_1_ATTRS(local_lock_irqsave, __acquires(_T), __releases(*(local_lock_t __percpu **)_T))
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#define class_local_lock_irqsave_constructor(_T) WITH_LOCK_GUARD_1_ATTRS(local_lock_irqsave, _T)
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DECLARE_LOCK_GUARD_1_ATTRS(local_lock_nested_bh, __acquires(_T), __releases(*(local_lock_t __percpu **)_T))
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#define class_local_lock_nested_bh_constructor(_T) WITH_LOCK_GUARD_1_ATTRS(local_lock_nested_bh, _T)
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DECLARE_LOCK_GUARD_1_ATTRS(local_lock_init, __acquires(_T), __releases(*(local_lock_t **)_T))
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#define class_local_lock_init_constructor(_T) WITH_LOCK_GUARD_1_ATTRS(local_lock_init, _T)
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DEFINE_LOCK_GUARD_1(local_trylock_init, local_trylock_t, local_trylock_init(_T->lock), /* */)
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DECLARE_LOCK_GUARD_1_ATTRS(local_trylock_init, __acquires(_T), __releases(*(local_trylock_t **)_T))
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#define class_local_trylock_init_constructor(_T) WITH_LOCK_GUARD_1_ATTRS(local_trylock_init, _T)
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#endif
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