1 #ifndef __LINUX_SPINLOCK_TYPES_H 2 #define __LINUX_SPINLOCK_TYPES_H 3 4 /* 5 * include/linux/spinlock_types.h - generic spinlock type definitions 6 * and initializers 7 * 8 * portions Copyright 2005, Red Hat, Inc., Ingo Molnar 9 * Released under the General Public License (GPL). 10 */ 11 12 #if defined(CONFIG_SMP) 13 # include <asm/spinlock_types.h> 14 #else 15 # include <linux/spinlock_types_up.h> 16 #endif 17 18 #include <linux/lockdep.h> 19 20 typedef struct { 21 arch_spinlock_t raw_lock; 22 #ifdef CONFIG_GENERIC_LOCKBREAK 23 unsigned int break_lock; 24 #endif 25 #ifdef CONFIG_DEBUG_SPINLOCK 26 unsigned int magic, owner_cpu; 27 void *owner; 28 #endif 29 #ifdef CONFIG_DEBUG_LOCK_ALLOC 30 struct lockdep_map dep_map; 31 #endif 32 } spinlock_t; 33 34 #define SPINLOCK_MAGIC 0xdead4ead 35 36 #define SPINLOCK_OWNER_INIT ((void *)-1L) 37 38 #ifdef CONFIG_DEBUG_LOCK_ALLOC 39 # define SPIN_DEP_MAP_INIT(lockname) .dep_map = { .name = #lockname } 40 #else 41 # define SPIN_DEP_MAP_INIT(lockname) 42 #endif 43 44 #ifdef CONFIG_DEBUG_SPINLOCK 45 # define __SPIN_LOCK_UNLOCKED(lockname) \ 46 (spinlock_t) { .raw_lock = __RAW_SPIN_LOCK_UNLOCKED, \ 47 .magic = SPINLOCK_MAGIC, \ 48 .owner = SPINLOCK_OWNER_INIT, \ 49 .owner_cpu = -1, \ 50 SPIN_DEP_MAP_INIT(lockname) } 51 #else 52 # define __SPIN_LOCK_UNLOCKED(lockname) \ 53 (spinlock_t) { .raw_lock = __RAW_SPIN_LOCK_UNLOCKED, \ 54 SPIN_DEP_MAP_INIT(lockname) } 55 #endif 56 57 /* 58 * SPIN_LOCK_UNLOCKED defeats lockdep state tracking and is hence 59 * deprecated. 60 * Please use DEFINE_SPINLOCK() or __SPIN_LOCK_UNLOCKED() as 61 * appropriate. 62 */ 63 #define SPIN_LOCK_UNLOCKED __SPIN_LOCK_UNLOCKED(old_style_spin_init) 64 65 #define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x) 66 67 #include <linux/rwlock_types.h> 68 69 #endif /* __LINUX_SPINLOCK_TYPES_H */ 70