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 28