arch/x86/include/asm/spinlock_types.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_SPINLOCK_TYPES_H
   3 #define _ASM_X86_SPINLOCK_TYPES_H
   4
   5 #include <linux/types.h>
   6
   7 #ifdef CONFIG_PARAVIRT_SPINLOCKS
   8 #define __TICKET_LOCK_INC       2
   9 #define TICKET_SLOWPATH_FLAG    ((__ticket_t)1)
  10 #else
  11 #define __TICKET_LOCK_INC       1
  12 #define TICKET_SLOWPATH_FLAG    ((__ticket_t)0)
  13 #endif
  14
  15 #if (CONFIG_NR_CPUS < (256 / __TICKET_LOCK_INC))
  16 typedef u8  __ticket_t;
  17 typedef u16 __ticketpair_t;
  18 #else
  19 typedef u16 __ticket_t;
  20 typedef u32 __ticketpair_t;
  21 #endif
  22
  23 #define TICKET_LOCK_INC ((__ticket_t)__TICKET_LOCK_INC)
  24
  25 #define TICKET_SHIFT    (sizeof(__ticket_t) * 8)
  26
  27 #include <asm-generic/qspinlock_types.h>
  28
  29 #include <asm-generic/qrwlock_types.h>
  30
  31 #endif /* _ASM_X86_SPINLOCK_TYPES_H */