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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1408 | serge | 1 | #ifndef __LINUX_SPINLOCK_TYPES_H |
| 2 | #define __LINUX_SPINLOCK_TYPES_H |
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| 3 | |||
| 4 | /* |
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| 5 | * include/linux/spinlock_types.h - generic spinlock type definitions |
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| 6 | * and initializers |
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| 7 | * |
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| 8 | * portions Copyright 2005, Red Hat, Inc., Ingo Molnar |
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| 9 | * Released under the General Public License (GPL). |
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| 10 | */ |
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| 11 | |||
| 12 | #if defined(CONFIG_SMP) |
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| 13 | # include |
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| 14 | #else |
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| 15 | # include |
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| 16 | #endif |
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| 17 | |||
| 18 | #include |
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| 19 | |||
| 5272 | serge | 20 | typedef struct raw_spinlock { |
| 21 | arch_spinlock_t raw_lock; |
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| 1408 | serge | 22 | #ifdef CONFIG_GENERIC_LOCKBREAK |
| 23 | unsigned int break_lock; |
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| 24 | #endif |
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| 25 | #ifdef CONFIG_DEBUG_SPINLOCK |
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| 26 | unsigned int magic, owner_cpu; |
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| 27 | void *owner; |
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| 28 | #endif |
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| 29 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
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| 30 | struct lockdep_map dep_map; |
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| 31 | #endif |
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| 5272 | serge | 32 | } raw_spinlock_t; |
| 1408 | serge | 33 | |
| 34 | #define SPINLOCK_MAGIC 0xdead4ead |
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| 35 | |||
| 36 | #define SPINLOCK_OWNER_INIT ((void *)-1L) |
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| 37 | |||
| 38 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
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| 39 | # define SPIN_DEP_MAP_INIT(lockname) .dep_map = { .name = #lockname } |
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| 40 | #else |
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| 41 | # define SPIN_DEP_MAP_INIT(lockname) |
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| 42 | #endif |
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| 43 | |||
| 44 | #ifdef CONFIG_DEBUG_SPINLOCK |
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| 5272 | serge | 45 | # define SPIN_DEBUG_INIT(lockname) \ |
| 6082 | serge | 46 | .magic = SPINLOCK_MAGIC, \ |
| 47 | .owner_cpu = -1, \ |
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| 5272 | serge | 48 | .owner = SPINLOCK_OWNER_INIT, |
| 1408 | serge | 49 | #else |
| 5272 | serge | 50 | # define SPIN_DEBUG_INIT(lockname) |
| 51 | #endif |
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| 52 | |||
| 53 | #define __RAW_SPIN_LOCK_INITIALIZER(lockname) \ |
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| 54 | { \ |
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| 55 | .raw_lock = __ARCH_SPIN_LOCK_UNLOCKED, \ |
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| 56 | SPIN_DEBUG_INIT(lockname) \ |
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| 6082 | serge | 57 | SPIN_DEP_MAP_INIT(lockname) } |
| 5272 | serge | 58 | |
| 59 | #define __RAW_SPIN_LOCK_UNLOCKED(lockname) \ |
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| 60 | (raw_spinlock_t) __RAW_SPIN_LOCK_INITIALIZER(lockname) |
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| 61 | |||
| 62 | #define DEFINE_RAW_SPINLOCK(x) raw_spinlock_t x = __RAW_SPIN_LOCK_UNLOCKED(x) |
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| 63 | |||
| 64 | typedef struct spinlock { |
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| 65 | union { |
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| 66 | struct raw_spinlock rlock; |
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| 67 | |||
| 68 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
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| 69 | # define LOCK_PADSIZE (offsetof(struct raw_spinlock, dep_map)) |
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| 70 | struct { |
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| 71 | u8 __padding[LOCK_PADSIZE]; |
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| 72 | struct lockdep_map dep_map; |
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| 73 | }; |
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| 1408 | serge | 74 | #endif |
| 5272 | serge | 75 | }; |
| 76 | } spinlock_t; |
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| 1408 | serge | 77 | |
| 5272 | serge | 78 | #define __SPIN_LOCK_INITIALIZER(lockname) \ |
| 79 | { { .rlock = __RAW_SPIN_LOCK_INITIALIZER(lockname) } } |
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| 1408 | serge | 80 | |
| 5272 | serge | 81 | #define __SPIN_LOCK_UNLOCKED(lockname) \ |
| 82 | (spinlock_t ) __SPIN_LOCK_INITIALIZER(lockname) |
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| 83 | |||
| 1408 | serge | 84 | #define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x) |
| 85 | |||
| 5272 | serge | 86 | #include |
| 87 | |||
| 1408 | serge | 88 | #endif /* __LINUX_SPINLOCK_TYPES_H */ |