include/asm-generic/qrwlock_types.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ASM_GENERIC_QRWLOCK_TYPES_H
   3 #define __ASM_GENERIC_QRWLOCK_TYPES_H
   4
   5 #include <linux/types.h>
   6 #include <asm/spinlock_types.h>
   7
   8 /*
   9  * The queue read/write lock data structure
  10  */
  11
  12 typedef struct qrwlock {
  13         atomic_t                cnts;
  14         arch_spinlock_t         wait_lock;
  15 } arch_rwlock_t;
  16
  17 #define __ARCH_RW_LOCK_UNLOCKED {               \
  18         .cnts = ATOMIC_INIT(0),                 \
  19         .wait_lock = __ARCH_SPIN_LOCK_UNLOCKED, \
  20 }
  21
  22 #endif /* __ASM_GENERIC_QRWLOCK_TYPES_H */