1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ****************************************************************************
11 ****************************************************************************/
12#ifndef __ASM_SPINLOCK_H
13#define __ASM_SPINLOCK_H
14
15#if __LINUX_ARM_ARCH__ < 6
16#error SMP not supported on pre-ARMv6 CPUs
17#endif
18
19#define __raw_spin_is_locked(x) ((x)->lock != 0)
20#define __raw_spin_unlock_wait(lock)   do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0)
21
22#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock)
23
24#define rwlock_is_locked(x) (*((volatile unsigned int *)(x)) != 0)
25#define __raw_write_can_lock(x) ((x)->lock == 0x80000000)
26#define __raw_read_can_lock(x) ((x)->lock < 0x80000000)
27#endif
28