61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
![]() |
/*
|
||
|
* Copyright 2010 Tilera Corporation. All Rights Reserved.
|
||
|
*
|
||
|
* This program is free software; you can redistribute it and/or
|
||
|
* modify it under the terms of the GNU General Public License
|
||
|
* as published by the Free Software Foundation, version 2.
|
||
|
*
|
||
|
* This program is distributed in the hope that it will be useful, but
|
||
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
||
|
* NON INFRINGEMENT. See the GNU General Public License for
|
||
|
* more details.
|
||
|
*/
|
||
|
|
||
|
#ifndef _ASM_TILE_SPINLOCK_TYPES_H
|
||
|
#define _ASM_TILE_SPINLOCK_TYPES_H
|
||
|
|
||
|
#ifndef __LINUX_SPINLOCK_TYPES_H
|
||
|
# error "please don't include this file directly"
|
||
|
#endif
|
||
|
|
||
|
#ifdef __tilegx__
|
||
|
|
||
|
/* Low 15 bits are "next"; high 15 bits are "current". */
|
||
|
typedef struct arch_spinlock {
|
||
|
unsigned int lock;
|
||
|
} arch_spinlock_t;
|
||
|
|
||
|
#define __ARCH_SPIN_LOCK_UNLOCKED { 0 }
|
||
|
|
||
|
/* High bit is "writer owns"; low 31 bits are a count of readers. */
|
||
|
typedef struct arch_rwlock {
|
||
|
unsigned int lock;
|
||
|
} arch_rwlock_t;
|
||
|
|
||
|
#define __ARCH_RW_LOCK_UNLOCKED { 0 }
|
||
|
|
||
|
#else
|
||
|
|
||
|
typedef struct arch_spinlock {
|
||
|
/* Next ticket number to hand out. */
|
||
|
int next_ticket;
|
||
|
/* The ticket number that currently owns this lock. */
|
||
|
int current_ticket;
|
||
|
} arch_spinlock_t;
|
||
|
|
||
|
#define __ARCH_SPIN_LOCK_UNLOCKED { 0, 0 }
|
||
|
|
||
|
/*
|
||
|
* Byte 0 for tns (only the low bit is used), byte 1 for ticket-lock "next",
|
||
|
* byte 2 for ticket-lock "current", byte 3 for reader count.
|
||
|
*/
|
||
|
typedef struct arch_rwlock {
|
||
|
unsigned int lock;
|
||
|
} arch_rwlock_t;
|
||
|
|
||
|
#define __ARCH_RW_LOCK_UNLOCKED { 0 }
|
||
|
|
||
|
#endif
|
||
|
#endif /* _ASM_TILE_SPINLOCK_TYPES_H */
|