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authorIngo Molnar <mingo@elte.hu>2006-07-03 07:24:29 (GMT)
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-03 22:27:01 (GMT)
commitc4e05116a2c4d8187127dbf77ab790aa57a47388 (patch)
tree58f07aed47ee4d30e9588d5a820c245faa163b09 /lib/rwsem-spinlock.c
parent8b3db9c542e18b71d4820da4dd9401ee030feacb (diff)
[PATCH] lockdep: clean up rwsems
Clean up rwsems. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'lib/rwsem-spinlock.c')
-rw-r--r--lib/rwsem-spinlock.c46
1 files changed, 2 insertions, 44 deletions
diff --git a/lib/rwsem-spinlock.c b/lib/rwsem-spinlock.c
index 40ffde9..03b6097 100644
--- a/lib/rwsem-spinlock.c
+++ b/lib/rwsem-spinlock.c
@@ -17,16 +17,6 @@ struct rwsem_waiter {
#define RWSEM_WAITING_FOR_WRITE 0x00000002
};
-#if RWSEM_DEBUG
-void rwsemtrace(struct rw_semaphore *sem, const char *str)
-{
- if (sem->debug)
- printk("[%d] %s({%d,%d})\n",
- current->pid, str, sem->activity,
- list_empty(&sem->wait_list) ? 0 : 1);
-}
-#endif
-
/*
* initialise the semaphore
*/
@@ -35,9 +25,6 @@ void fastcall init_rwsem(struct rw_semaphore *sem)
sem->activity = 0;
spin_lock_init(&sem->wait_lock);
INIT_LIST_HEAD(&sem->wait_list);
-#if RWSEM_DEBUG
- sem->debug = 0;
-#endif
}
/*
@@ -56,8 +43,6 @@ __rwsem_do_wake(struct rw_semaphore *sem, int wakewrite)
struct task_struct *tsk;
int woken;
- rwsemtrace(sem, "Entering __rwsem_do_wake");
-
waiter = list_entry(sem->wait_list.next, struct rwsem_waiter, list);
if (!wakewrite) {
@@ -104,7 +89,6 @@ __rwsem_do_wake(struct rw_semaphore *sem, int wakewrite)
sem->activity += woken;
out:
- rwsemtrace(sem, "Leaving __rwsem_do_wake");
return sem;
}
@@ -138,8 +122,6 @@ void fastcall __sched __down_read(struct rw_semaphore *sem)
struct rwsem_waiter waiter;
struct task_struct *tsk;
- rwsemtrace(sem, "Entering __down_read");
-
spin_lock_irq(&sem->wait_lock);
if (sem->activity >= 0 && list_empty(&sem->wait_list)) {
@@ -171,9 +153,8 @@ void fastcall __sched __down_read(struct rw_semaphore *sem)
}
tsk->state = TASK_RUNNING;
-
out:
- rwsemtrace(sem, "Leaving __down_read");
+ ;
}
/*
@@ -184,7 +165,6 @@ int fastcall __down_read_trylock(struct rw_semaphore *sem)
unsigned long flags;
int ret = 0;
- rwsemtrace(sem, "Entering __down_read_trylock");
spin_lock_irqsave(&sem->wait_lock, flags);
@@ -196,7 +176,6 @@ int fastcall __down_read_trylock(struct rw_semaphore *sem)
spin_unlock_irqrestore(&sem->wait_lock, flags);
- rwsemtrace(sem, "Leaving __down_read_trylock");
return ret;
}
@@ -209,8 +188,6 @@ void fastcall __sched __down_write(struct rw_semaphore *sem)
struct rwsem_waiter waiter;
struct task_struct *tsk;
- rwsemtrace(sem, "Entering __down_write");
-
spin_lock_irq(&sem->wait_lock);
if (sem->activity == 0 && list_empty(&sem->wait_list)) {
@@ -242,9 +219,8 @@ void fastcall __sched __down_write(struct rw_semaphore *sem)
}
tsk->state = TASK_RUNNING;
-
out:
- rwsemtrace(sem, "Leaving __down_write");
+ ;
}
/*
@@ -255,8 +231,6 @@ int fastcall __down_write_trylock(struct rw_semaphore *sem)
unsigned long flags;
int ret = 0;
- rwsemtrace(sem, "Entering __down_write_trylock");
-
spin_lock_irqsave(&sem->wait_lock, flags);
if (sem->activity == 0 && list_empty(&sem->wait_list)) {
@@ -267,7 +241,6 @@ int fastcall __down_write_trylock(struct rw_semaphore *sem)
spin_unlock_irqrestore(&sem->wait_lock, flags);
- rwsemtrace(sem, "Leaving __down_write_trylock");
return ret;
}
@@ -278,16 +251,12 @@ void fastcall __up_read(struct rw_semaphore *sem)
{
unsigned long flags;
- rwsemtrace(sem, "Entering __up_read");
-
spin_lock_irqsave(&sem->wait_lock, flags);
if (--sem->activity == 0 && !list_empty(&sem->wait_list))
sem = __rwsem_wake_one_writer(sem);
spin_unlock_irqrestore(&sem->wait_lock, flags);
-
- rwsemtrace(sem, "Leaving __up_read");
}
/*
@@ -297,8 +266,6 @@ void fastcall __up_write(struct rw_semaphore *sem)
{
unsigned long flags;
- rwsemtrace(sem, "Entering __up_write");
-
spin_lock_irqsave(&sem->wait_lock, flags);
sem->activity = 0;
@@ -306,8 +273,6 @@ void fastcall __up_write(struct rw_semaphore *sem)
sem = __rwsem_do_wake(sem, 1);
spin_unlock_irqrestore(&sem->wait_lock, flags);
-
- rwsemtrace(sem, "Leaving __up_write");
}
/*
@@ -318,8 +283,6 @@ void fastcall __downgrade_write(struct rw_semaphore *sem)
{
unsigned long flags;
- rwsemtrace(sem, "Entering __downgrade_write");
-
spin_lock_irqsave(&sem->wait_lock, flags);
sem->activity = 1;
@@ -327,8 +290,6 @@ void fastcall __downgrade_write(struct rw_semaphore *sem)
sem = __rwsem_do_wake(sem, 0);
spin_unlock_irqrestore(&sem->wait_lock, flags);
-
- rwsemtrace(sem, "Leaving __downgrade_write");
}
EXPORT_SYMBOL(init_rwsem);
@@ -339,6 +300,3 @@ EXPORT_SYMBOL(__down_write_trylock);
EXPORT_SYMBOL(__up_read);
EXPORT_SYMBOL(__up_write);
EXPORT_SYMBOL(__downgrade_write);
-#if RWSEM_DEBUG
-EXPORT_SYMBOL(rwsemtrace);
-#endif

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