| 0,0 → 1,48 |
|---|
| #ifndef __LINUX_RWLOCK_TYPES_H |
| #define __LINUX_RWLOCK_TYPES_H |
| |
| /* |
| * include/linux/rwlock_types.h - generic rwlock type definitions |
| * and initializers |
| * |
| * portions Copyright 2005, Red Hat, Inc., Ingo Molnar |
| * Released under the General Public License (GPL). |
| */ |
| typedef struct { |
| arch_rwlock_t raw_lock; |
| #ifdef CONFIG_GENERIC_LOCKBREAK |
| unsigned int break_lock; |
| #endif |
| #ifdef CONFIG_DEBUG_SPINLOCK |
| unsigned int magic, owner_cpu; |
| void *owner; |
| #endif |
| #ifdef CONFIG_DEBUG_LOCK_ALLOC |
| struct lockdep_map dep_map; |
| #endif |
| } rwlock_t; |
| |
| #define RWLOCK_MAGIC 0xdeaf1eed |
| |
| #ifdef CONFIG_DEBUG_LOCK_ALLOC |
| # define RW_DEP_MAP_INIT(lockname) .dep_map = { .name = #lockname } |
| #else |
| # define RW_DEP_MAP_INIT(lockname) |
| #endif |
| |
| #ifdef CONFIG_DEBUG_SPINLOCK |
| #define __RW_LOCK_UNLOCKED(lockname) \ |
| (rwlock_t) { .raw_lock = __ARCH_RW_LOCK_UNLOCKED, \ |
| .magic = RWLOCK_MAGIC, \ |
| .owner = SPINLOCK_OWNER_INIT, \ |
| .owner_cpu = -1, \ |
| RW_DEP_MAP_INIT(lockname) } |
| #else |
| #define __RW_LOCK_UNLOCKED(lockname) \ |
| (rwlock_t) { .raw_lock = __ARCH_RW_LOCK_UNLOCKED, \ |
| RW_DEP_MAP_INIT(lockname) } |
| #endif |
| |
| #define DEFINE_RWLOCK(x) rwlock_t x = __RW_LOCK_UNLOCKED(x) |
| |
| #endif /* __LINUX_RWLOCK_TYPES_H */ |