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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - include/linux/rwlock_types.h
1 #ifndef __LINUX_RWLOCK_TYPES_H
2 #define __LINUX_RWLOCK_TYPES_H
5 * include/linux/rwlock_types.h - generic rwlock type definitions
8 * portions Copyright 2005, Red Hat, Inc., Ingo Molnar
9 * Released under the General Public License (GPL).
12 arch_rwlock_t raw_lock
;
13 #ifdef CONFIG_DEBUG_SPINLOCK
14 unsigned int magic
, owner_cpu
;
17 #ifdef CONFIG_DEBUG_LOCK_ALLOC
18 struct lockdep_map dep_map
;
22 #define RWLOCK_MAGIC 0xdeaf1eed
24 #ifdef CONFIG_DEBUG_LOCK_ALLOC
25 # define RW_DEP_MAP_INIT(lockname) .dep_map = { .name = #lockname }
27 # define RW_DEP_MAP_INIT(lockname)
30 #ifdef CONFIG_DEBUG_SPINLOCK
31 #define __RW_LOCK_UNLOCKED(lockname) \
32 (rwlock_t) { .raw_lock = __ARCH_RW_LOCK_UNLOCKED, \
33 .magic = RWLOCK_MAGIC, \
34 .owner = SPINLOCK_OWNER_INIT, \
36 RW_DEP_MAP_INIT(lockname) }
38 #define __RW_LOCK_UNLOCKED(lockname) \
39 (rwlock_t) { .raw_lock = __ARCH_RW_LOCK_UNLOCKED, \
40 RW_DEP_MAP_INIT(lockname) }
43 #define DEFINE_RWLOCK(x) rwlock_t x = __RW_LOCK_UNLOCKED(x)
45 #endif /* __LINUX_RWLOCK_TYPES_H */