include/linux/local_lock.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_LOCAL_LOCK_H
   3 #define _LINUX_LOCAL_LOCK_H
   4
   5 #include <linux/local_lock_internal.h>
   6
   7 /**
   8  * local_lock_init - Runtime initialize a lock instance
   9  */
  10 #define local_lock_init(lock)           __local_lock_init(lock)
  11
  12 /**
  13  * local_lock - Acquire a per CPU local lock
  14  * @lock:       The lock variable
  15  */
  16 #define local_lock(lock)                __local_lock(lock)
  17
  18 /**
  19  * local_lock_irq - Acquire a per CPU local lock and disable interrupts
  20  * @lock:       The lock variable
  21  */
  22 #define local_lock_irq(lock)            __local_lock_irq(lock)
  23
  24 /**
  25  * local_lock_irqsave - Acquire a per CPU local lock, save and disable
  26  *                       interrupts
  27  * @lock:       The lock variable
  28  * @flags:      Storage for interrupt flags
  29  */
  30 #define local_lock_irqsave(lock, flags)                         \
  31         __local_lock_irqsave(lock, flags)
  32
  33 /**
  34  * local_unlock - Release a per CPU local lock
  35  * @lock:       The lock variable
  36  */
  37 #define local_unlock(lock)              __local_unlock(lock)
  38
  39 /**
  40  * local_unlock_irq - Release a per CPU local lock and enable interrupts
  41  * @lock:       The lock variable
  42  */
  43 #define local_unlock_irq(lock)          __local_unlock_irq(lock)
  44
  45 /**
  46  * local_unlock_irqrestore - Release a per CPU local lock and restore
  47  *                            interrupt flags
  48  * @lock:       The lock variable
  49  * @flags:      Interrupt flags to restore
  50  */
  51 #define local_unlock_irqrestore(lock, flags)                    \
  52         __local_unlock_irqrestore(lock, flags)
  53
  54 DEFINE_GUARD(local_lock, local_lock_t __percpu*,
  55              local_lock(_T),
  56              local_unlock(_T))
  57 DEFINE_GUARD(local_lock_irq, local_lock_t __percpu*,
  58              local_lock_irq(_T),
  59              local_unlock_irq(_T))
  60 DEFINE_LOCK_GUARD_1(local_lock_irqsave, local_lock_t __percpu,
  61                     local_lock_irqsave(_T->lock, _T->flags),
  62                     local_unlock_irqrestore(_T->lock, _T->flags),
  63                     unsigned long flags)
  64
  65 #define local_lock_nested_bh(_lock)                             \
  66         __local_lock_nested_bh(_lock)
  67
  68 #define local_unlock_nested_bh(_lock)                           \
  69         __local_unlock_nested_bh(_lock)
  70
  71 DEFINE_GUARD(local_lock_nested_bh, local_lock_t __percpu*,
  72              local_lock_nested_bh(_T),
  73              local_unlock_nested_bh(_T))
  74
  75 #endif