diff options
author | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-10 10:00:00 -0800 |
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committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-10 10:00:00 -0800 |
commit | edb16bec41db68b22799a5fbad82c3891e637565 (patch) | |
tree | d019d2fa8fbf374d810f66e1a210648e53b0c593 /include/asm-sparc64/rwsem.h | |
parent | bb7320d1d96dc2e479180ae8e7a112caf0726ace (diff) | |
parent | f0882589666440d573f657cb3a1d5f66f3caa157 (diff) |
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC64]: Fix several kprobes bugs.
[SPARC64]: Update defconfig.
[SPARC64]: dma remove extra brackets
[SPARC{32,64}]: Propagate ptrace_traceme() return value.
[SPARC64]: Replace kmalloc+memset with kzalloc
[SPARC]: Check kzalloc() return value in SUN4D irq/iommu init.
[SPARC]: Replace kmalloc+memset with kzalloc
[SPARC64]: Run ctrl-alt-del action for sun4v powerdown request.
[SPARC64]: Unaligned accesses to userspace are hard errors.
[SPARC64]: Call do_mathemu on illegal instruction traps too.
[SPARC64]: Update defconfig.
[SPARC64]: Add irqtrace/stacktrace/lockdep support.
Diffstat (limited to 'include/asm-sparc64/rwsem.h')
-rw-r--r-- | include/asm-sparc64/rwsem.h | 32 |
1 files changed, 25 insertions, 7 deletions
diff --git a/include/asm-sparc64/rwsem.h b/include/asm-sparc64/rwsem.h index cef5e827042..1294b7ce5d0 100644 --- a/include/asm-sparc64/rwsem.h +++ b/include/asm-sparc64/rwsem.h @@ -23,20 +23,33 @@ struct rw_semaphore { signed int count; spinlock_t wait_lock; struct list_head wait_list; +#ifdef CONFIG_DEBUG_LOCK_ALLOC + struct lockdep_map dep_map; +#endif }; +#ifdef CONFIG_DEBUG_LOCK_ALLOC +# define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname } +#else +# define __RWSEM_DEP_MAP_INIT(lockname) +#endif + #define __RWSEM_INITIALIZER(name) \ -{ RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, LIST_HEAD_INIT((name).wait_list) } +{ RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, LIST_HEAD_INIT((name).wait_list) \ + __RWSEM_DEP_MAP_INIT(name) } #define DECLARE_RWSEM(name) \ struct rw_semaphore name = __RWSEM_INITIALIZER(name) -static __inline__ void init_rwsem(struct rw_semaphore *sem) -{ - sem->count = RWSEM_UNLOCKED_VALUE; - spin_lock_init(&sem->wait_lock); - INIT_LIST_HEAD(&sem->wait_list); -} +extern void __init_rwsem(struct rw_semaphore *sem, const char *name, + struct lock_class_key *key); + +#define init_rwsem(sem) \ +do { \ + static struct lock_class_key __key; \ + \ + __init_rwsem((sem), #sem, &__key); \ +} while (0) extern void __down_read(struct rw_semaphore *sem); extern int __down_read_trylock(struct rw_semaphore *sem); @@ -46,6 +59,11 @@ extern void __up_read(struct rw_semaphore *sem); extern void __up_write(struct rw_semaphore *sem); extern void __downgrade_write(struct rw_semaphore *sem); +static inline void __down_write_nested(struct rw_semaphore *sem, int subclass) +{ + __down_write(sem); +} + static inline int rwsem_atomic_update(int delta, struct rw_semaphore *sem) { return atomic_add_return(delta, (atomic_t *)(&sem->count)); |