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-rw-r--r--lib/rwsem-spinlock.c46
-rw-r--r--lib/rwsem.c31
2 files changed, 2 insertions, 75 deletions
diff --git a/lib/rwsem-spinlock.c b/lib/rwsem-spinlock.c
index 40ffde940a8..03b6097eb04 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
diff --git a/lib/rwsem.c b/lib/rwsem.c
index 62fa4eba9ff..bae59728488 100644
--- a/lib/rwsem.c
+++ b/lib/rwsem.c
@@ -16,17 +16,6 @@ struct rwsem_waiter {
#define RWSEM_WAITING_FOR_WRITE 0x00000002
};
-#if RWSEM_DEBUG
-#undef rwsemtrace
-void rwsemtrace(struct rw_semaphore *sem, const char *str)
-{
- printk("sem=%p\n", sem);
- printk("(sem)=%08lx\n", sem->count);
- if (sem->debug)
- printk("[%d] %s({%08lx})\n", current->pid, str, sem->count);
-}
-#endif
-
/*
* handle the lock release when processes blocked on it that can now run
* - if we come here from up_xxxx(), then:
@@ -45,8 +34,6 @@ __rwsem_do_wake(struct rw_semaphore *sem, int downgrading)
struct list_head *next;
signed long oldcount, woken, loop;
- rwsemtrace(sem, "Entering __rwsem_do_wake");
-
if (downgrading)
goto dont_wake_writers;
@@ -127,7 +114,6 @@ __rwsem_do_wake(struct rw_semaphore *sem, int downgrading)
next->prev = &sem->wait_list;
out:
- rwsemtrace(sem, "Leaving __rwsem_do_wake");
return sem;
/* undo the change to count, but check for a transition 1->0 */
@@ -186,13 +172,9 @@ rwsem_down_read_failed(struct rw_semaphore *sem)
{
struct rwsem_waiter waiter;
- rwsemtrace(sem, "Entering rwsem_down_read_failed");
-
waiter.flags = RWSEM_WAITING_FOR_READ;
rwsem_down_failed_common(sem, &waiter,
RWSEM_WAITING_BIAS - RWSEM_ACTIVE_BIAS);
-
- rwsemtrace(sem, "Leaving rwsem_down_read_failed");
return sem;
}
@@ -204,12 +186,9 @@ rwsem_down_write_failed(struct rw_semaphore *sem)
{
struct rwsem_waiter waiter;
- rwsemtrace(sem, "Entering rwsem_down_write_failed");
-
waiter.flags = RWSEM_WAITING_FOR_WRITE;
rwsem_down_failed_common(sem, &waiter, -RWSEM_ACTIVE_BIAS);
- rwsemtrace(sem, "Leaving rwsem_down_write_failed");
return sem;
}
@@ -221,8 +200,6 @@ struct rw_semaphore fastcall *rwsem_wake(struct rw_semaphore *sem)
{
unsigned long flags;
- rwsemtrace(sem, "Entering rwsem_wake");
-
spin_lock_irqsave(&sem->wait_lock, flags);
/* do nothing if list empty */
@@ -231,8 +208,6 @@ struct rw_semaphore fastcall *rwsem_wake(struct rw_semaphore *sem)
spin_unlock_irqrestore(&sem->wait_lock, flags);
- rwsemtrace(sem, "Leaving rwsem_wake");
-
return sem;
}
@@ -245,8 +220,6 @@ struct rw_semaphore fastcall *rwsem_downgrade_wake(struct rw_semaphore *sem)
{
unsigned long flags;
- rwsemtrace(sem, "Entering rwsem_downgrade_wake");
-
spin_lock_irqsave(&sem->wait_lock, flags);
/* do nothing if list empty */
@@ -255,7 +228,6 @@ struct rw_semaphore fastcall *rwsem_downgrade_wake(struct rw_semaphore *sem)
spin_unlock_irqrestore(&sem->wait_lock, flags);
- rwsemtrace(sem, "Leaving rwsem_downgrade_wake");
return sem;
}
@@ -263,6 +235,3 @@ EXPORT_SYMBOL(rwsem_down_read_failed);
EXPORT_SYMBOL(rwsem_down_write_failed);
EXPORT_SYMBOL(rwsem_wake);
EXPORT_SYMBOL(rwsem_downgrade_wake);
-#if RWSEM_DEBUG
-EXPORT_SYMBOL(rwsemtrace);
-#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-03 22:20:59 +0000