| 1 | #ifndef __LINUX_SPINLOCK_TYPES_H |
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| 2 | #define __LINUX_SPINLOCK_TYPES_H |
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| 3 | |
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| 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 | |
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| 12 | #include <linux/spinlock_types_raw.h> |
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| 13 | |
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| 14 | #ifndef CONFIG_PREEMPT_RT |
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| 15 | |
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| 16 | /* Non PREEMPT_RT kernels map spinlock to raw_spinlock */ |
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| 17 | typedef struct spinlock { |
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| 18 | union { |
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| 19 | struct raw_spinlock rlock; |
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| 20 | |
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| 21 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
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| 22 | # define LOCK_PADSIZE (offsetof(struct raw_spinlock, dep_map)) |
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| 23 | struct { |
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| 24 | u8 __padding[LOCK_PADSIZE]; |
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| 25 | struct lockdep_map dep_map; |
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| 26 | }; |
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| 27 | #endif |
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| 28 | }; |
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| 29 | } spinlock_t; |
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| 30 | |
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| 31 | #define ___SPIN_LOCK_INITIALIZER(lockname) \ |
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| 32 | { \ |
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| 33 | .raw_lock = __ARCH_SPIN_LOCK_UNLOCKED, \ |
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| 34 | SPIN_DEBUG_INIT(lockname) \ |
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| 35 | SPIN_DEP_MAP_INIT(lockname) } |
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| 36 | |
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| 37 | #define __SPIN_LOCK_INITIALIZER(lockname) \ |
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| 38 | { { .rlock = ___SPIN_LOCK_INITIALIZER(lockname) } } |
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| 39 | |
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| 40 | #define __SPIN_LOCK_UNLOCKED(lockname) \ |
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| 41 | (spinlock_t) __SPIN_LOCK_INITIALIZER(lockname) |
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| 42 | |
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| 43 | #define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x) |
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| 44 | |
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| 45 | #else /* !CONFIG_PREEMPT_RT */ |
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| 46 | |
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| 47 | /* PREEMPT_RT kernels map spinlock to rt_mutex */ |
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| 48 | #include <linux/rtmutex.h> |
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| 49 | |
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| 50 | typedef struct spinlock { |
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| 51 | struct rt_mutex_base lock; |
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| 52 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
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| 53 | struct lockdep_map dep_map; |
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| 54 | #endif |
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| 55 | } spinlock_t; |
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| 56 | |
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| 57 | #define __SPIN_LOCK_UNLOCKED(name) \ |
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| 58 | { \ |
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| 59 | .lock = __RT_MUTEX_BASE_INITIALIZER(name.lock), \ |
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| 60 | SPIN_DEP_MAP_INIT(name) \ |
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| 61 | } |
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| 62 | |
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| 63 | #define __LOCAL_SPIN_LOCK_UNLOCKED(name) \ |
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| 64 | { \ |
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| 65 | .lock = __RT_MUTEX_BASE_INITIALIZER(name.lock), \ |
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| 66 | LOCAL_SPIN_DEP_MAP_INIT(name) \ |
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| 67 | } |
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| 68 | |
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| 69 | #define DEFINE_SPINLOCK(name) \ |
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| 70 | spinlock_t name = __SPIN_LOCK_UNLOCKED(name) |
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| 71 | |
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| 72 | #endif /* CONFIG_PREEMPT_RT */ |
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| 73 | |
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| 74 | #include <linux/rwlock_types.h> |
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| 75 | |
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| 76 | #endif /* __LINUX_SPINLOCK_TYPES_H */ |
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| 77 | |
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