27 lines
1.2 KiB
C
27 lines
1.2 KiB
C
/****************************************************************************
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****************************************************************************
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***
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*** This header was automatically generated from a Linux kernel header
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*** of the same name, to make information necessary for userspace to
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*** call into the kernel available to libc. It contains only constants,
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*** structures, and macros generated from the original header, and thus,
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*** contains no copyrightable information.
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***
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****************************************************************************
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****************************************************************************/
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#ifndef __ASM_SPINLOCK_H
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#define __ASM_SPINLOCK_H
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#if __LINUX_ARM_ARCH__ < 6
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#error SMP not supported on pre-ARMv6 CPUs
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#endif
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#define __raw_spin_is_locked(x) ((x)->lock != 0)
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#define __raw_spin_unlock_wait(lock) do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0)
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#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock)
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#define rwlock_is_locked(x) (*((volatile unsigned int *)(x)) != 0)
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#define __raw_write_can_lock(x) ((x)->lock == 0x80000000)
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#define __raw_read_can_lock(x) ((x)->lock < 0x80000000)
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#endif
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