111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/****************************************************************************
211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ****************************************************************************
311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ***
411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ***   This header was automatically generated from a Linux kernel header
511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ***   of the same name, to make information necessary for userspace to
611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ***   call into the kernel available to libc.  It contains only constants,
711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ***   structures, and macros generated from the original header, and thus,
811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ***   contains no copyrightable information.
911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ***
1011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ****************************************************************************
1111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ****************************************************************************/
1211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef __ASM_SPINLOCK_H
1311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __ASM_SPINLOCK_H
1411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
1511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if __LINUX_ARM_ARCH__ < 6
1611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#error SMP not supported on pre-ARMv6 CPUs
1711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif
1811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
1911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __raw_spin_is_locked(x) ((x)->lock != 0)
2011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __raw_spin_unlock_wait(lock)   do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0)
2111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
2211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock)
2311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
2411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define rwlock_is_locked(x) (*((volatile unsigned int *)(x)) != 0)
2511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __raw_write_can_lock(x) ((x)->lock == 0x80000000)
2611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __raw_read_can_lock(x) ((x)->lock < 0x80000000)
2711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif
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