drivers/staging/lttng/wrapper/spinlock.h

   1 #ifndef _LTT_WRAPPER_SPINLOCK_H
   2 #define _LTT_WRAPPER_SPINLOCK_H
   3
   4 /*
   5  * Copyright (C) 2011 Mathieu Desnoyers (mathieu.desnoyers@efficios.com)
   6  *
   7  * Dual LGPL v2.1/GPL v2 license.
   8  */
   9
  10 #include <linux/version.h>
  11
  12 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33))
  13
  14 #include <linux/string.h>
  15
  16 #define raw_spin_lock_init(lock)                                        \
  17         do {                                                            \
  18                 raw_spinlock_t __lock = __RAW_SPIN_LOCK_UNLOCKED;       \
  19                 memcpy(lock, &__lock, sizeof(lock));                    \
  20         } while (0)
  21
  22 #define raw_spin_is_locked(lock)        __raw_spin_is_locked(lock)
  23
  24
  25 #endif
  26 #endif /* _LTT_WRAPPER_SPINLOCK_H */