| The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 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 |