root/arch/arm/include/asm/spinlock_types.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ASM_SPINLOCK_TYPES_H
   3 #define __ASM_SPINLOCK_TYPES_H
   4 
   5 #ifndef __LINUX_SPINLOCK_TYPES_H
   6 # error "please don't include this file directly"
   7 #endif
   8 
   9 #define TICKET_SHIFT    16
  10 
  11 typedef struct {
  12         union {
  13                 u32 slock;
  14                 struct __raw_tickets {
  15 #ifdef __ARMEB__
  16                         u16 next;
  17                         u16 owner;
  18 #else
  19                         u16 owner;
  20                         u16 next;
  21 #endif
  22                 } tickets;
  23         };
  24 } arch_spinlock_t;
  25 
  26 #define __ARCH_SPIN_LOCK_UNLOCKED       { { 0 } }
  27 
  28 typedef struct {
  29         u32 lock;
  30 } arch_rwlock_t;
  31 
  32 #define __ARCH_RW_LOCK_UNLOCKED         { 0 }
  33 
  34 #endif