| 1 |
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| 2 | #ifndef __ASM_GENERIC_QRWLOCK_TYPES_H
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| 3 | #define __ASM_GENERIC_QRWLOCK_TYPES_H
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| 4 |
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| 5 | #include <linux/types.h>
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| 6 | #include <asm/byteorder.h>
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| 7 | #include <asm/spinlock_types.h>
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| 8 |
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| 9 | |
| 10 | * The queued read/write lock data structure
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| 11 |
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| 12 |
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| 13 | typedef struct qrwlock {
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| 14 | union {
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| 15 | atomic_t cnts;
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| 16 | struct {
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| 17 | #ifdef __LITTLE_ENDIAN
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| 18 | u8 wlocked;
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| 19 | u8 __lstate[3];
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| 20 | #else
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| 21 | u8 __lstate[3];
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| 22 | u8 wlocked;
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| 23 | #endif
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| 24 | };
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| 25 | };
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| 26 | arch_spinlock_t wait_lock;
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| 27 | } arch_rwlock_t;
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| 28 |
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| 29 | #define __ARCH_RW_LOCK_UNLOCKED { \
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| 30 | { .cnts = ATOMIC_INIT(0), }, \
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| 31 | .wait_lock = __ARCH_SPIN_LOCK_UNLOCKED, \
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| 32 | }
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| 33 |
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| 34 | #endif
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