projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| fb1c8f93 IM |
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 | ||
| 21f8ca3b PZ |
18 | #include <linux/lockdep.h> |
| 19 | ||
| c2f21ce2 | 20 | typedef struct raw_spinlock { |
| 445c8951 | 21 | arch_spinlock_t raw_lock; |
| fb1c8f93 IM |
22 | #ifdef CONFIG_DEBUG_SPINLOCK |
| 23 | unsigned int magic, owner_cpu; | |
| 24 | void *owner; | |
| 25 | #endif | |
| 8a25d5de IM |
26 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
| 27 | struct lockdep_map dep_map; | |
| 28 | #endif | |
| c2f21ce2 | 29 | } raw_spinlock_t; |
| fb1c8f93 IM |
30 | |
| 31 | #define SPINLOCK_MAGIC 0xdead4ead | |
| 32 | ||
| fb1c8f93 IM |
33 | #define SPINLOCK_OWNER_INIT ((void *)-1L) |
| 34 | ||
| 8a25d5de IM |
35 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
| 36 | # define SPIN_DEP_MAP_INIT(lockname) .dep_map = { .name = #lockname } | |
| 37 | #else | |
| 38 | # define SPIN_DEP_MAP_INIT(lockname) | |
| 39 | #endif | |
| 40 | ||
| fb1c8f93 | 41 | #ifdef CONFIG_DEBUG_SPINLOCK |
| c2f21ce2 TG |
42 | # define SPIN_DEBUG_INIT(lockname) \ |
| 43 | .magic = SPINLOCK_MAGIC, \ | |
| 44 | .owner_cpu = -1, \ | |
| 45 | .owner = SPINLOCK_OWNER_INIT, | |
| fb1c8f93 | 46 | #else |
| c2f21ce2 | 47 | # define SPIN_DEBUG_INIT(lockname) |
| fb1c8f93 IM |
48 | #endif |
| 49 | ||
| c2f21ce2 TG |
50 | #define __RAW_SPIN_LOCK_INITIALIZER(lockname) \ |
| 51 | { \ | |
| 52 | .raw_lock = __ARCH_SPIN_LOCK_UNLOCKED, \ | |
| 53 | SPIN_DEBUG_INIT(lockname) \ | |
| 54 | SPIN_DEP_MAP_INIT(lockname) } | |
| 55 | ||
| 56 | #define __RAW_SPIN_LOCK_UNLOCKED(lockname) \ | |
| 57 | (raw_spinlock_t) __RAW_SPIN_LOCK_INITIALIZER(lockname) | |
| 58 | ||
| 59 | #define DEFINE_RAW_SPINLOCK(x) raw_spinlock_t x = __RAW_SPIN_LOCK_UNLOCKED(x) | |
| 60 | ||
| 61 | typedef struct spinlock { | |
| 62 | union { | |
| 63 | struct raw_spinlock rlock; | |
| 64 | ||
| 65 | #ifdef CONFIG_DEBUG_LOCK_ALLOC | |
| 66 | # define LOCK_PADSIZE (offsetof(struct raw_spinlock, dep_map)) | |
| 67 | struct { | |
| 68 | u8 __padding[LOCK_PADSIZE]; | |
| 69 | struct lockdep_map dep_map; | |
| 70 | }; | |
| 71 | #endif | |
| 72 | }; | |
| 73 | } spinlock_t; | |
| 74 | ||
| 75 | #define __SPIN_LOCK_INITIALIZER(lockname) \ | |
| 76 | { { .rlock = __RAW_SPIN_LOCK_INITIALIZER(lockname) } } | |
| 77 | ||
| 78 | #define __SPIN_LOCK_UNLOCKED(lockname) \ | |
| 79 | (spinlock_t ) __SPIN_LOCK_INITIALIZER(lockname) | |
| 80 | ||
| e4d91918 | 81 | #define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x) |
| ef12f109 TG |
82 | |
| 83 | #include <linux/rwlock_types.h> | |
| fb1c8f93 IM |
84 | |
| 85 | #endif /* __LINUX_SPINLOCK_TYPES_H */ |