1 files changed, 0 insertions, 97 deletions

diff --git a/kernel/locking/rtmutex-debug.c b/kernel/locking/rtmutex-debug.c
index 7e411b946d4c..fb150100335f 100644
--- a/kernel/locking/rtmutex-debug.c
+++ b/kernel/locking/rtmutex-debug.c
@@ -32,105 +32,12 @@
 
 #include "rtmutex_common.h"
 
-static void printk_task(struct task_struct *p)
-{
-	if (p)
-		printk("%16s:%5d [%p, %3d]", p->comm, task_pid_nr(p), p, p->prio);
-	else
-		printk("<none>");
-}
-
-static void printk_lock(struct rt_mutex *lock, int print_owner)
-{
-	printk(" [%p] {%s}\n", lock, lock->name);
-
-	if (print_owner && rt_mutex_owner(lock)) {
-		printk(".. ->owner: %p\n", lock->owner);
-		printk(".. held by:  ");
-		printk_task(rt_mutex_owner(lock));
-		printk("\n");
-	}
-}
-
 void rt_mutex_debug_task_free(struct task_struct *task)
 {
 	DEBUG_LOCKS_WARN_ON(!RB_EMPTY_ROOT(&task->pi_waiters.rb_root));
 	DEBUG_LOCKS_WARN_ON(task->pi_blocked_on);
 }
 
-/*
- * We fill out the fields in the waiter to store the information about
- * the deadlock. We print when we return. act_waiter can be NULL in
- * case of a remove waiter operation.
- */
-void debug_rt_mutex_deadlock(enum rtmutex_chainwalk chwalk,
-			     struct rt_mutex_waiter *act_waiter,
-			     struct rt_mutex *lock)
-{
-	struct task_struct *task;
-
-	if (!debug_locks || chwalk == RT_MUTEX_FULL_CHAINWALK || !act_waiter)
-		return;
-
-	task = rt_mutex_owner(act_waiter->lock);
-	if (task && task != current) {
-		act_waiter->deadlock_task_pid = get_pid(task_pid(task));
-		act_waiter->deadlock_lock = lock;
-	}
-}
-
-void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter)
-{
-	struct task_struct *task;
-
-	if (!waiter->deadlock_lock || !debug_locks)
-		return;
-
-	rcu_read_lock();
-	task = pid_task(waiter->deadlock_task_pid, PIDTYPE_PID);
-	if (!task) {
-		rcu_read_unlock();
-		return;
-	}
-
-	if (!debug_locks_off()) {
-		rcu_read_unlock();
-		return;
-	}
-
-	pr_warn("\n");
-	pr_warn("============================================\n");
-	pr_warn("WARNING: circular locking deadlock detected!\n");
-	pr_warn("%s\n", print_tainted());
-	pr_warn("--------------------------------------------\n");
-	printk("%s/%d is deadlocking current task %s/%d\n\n",
-	       task->comm, task_pid_nr(task),
-	       current->comm, task_pid_nr(current));
-
-	printk("\n1) %s/%d is trying to acquire this lock:\n",
-	       current->comm, task_pid_nr(current));
-	printk_lock(waiter->lock, 1);
-
-	printk("\n2) %s/%d is blocked on this lock:\n",
-		task->comm, task_pid_nr(task));
-	printk_lock(waiter->deadlock_lock, 1);
-
-	debug_show_held_locks(current);
-	debug_show_held_locks(task);
-
-	printk("\n%s/%d's [blocked] stackdump:\n\n",
-		task->comm, task_pid_nr(task));
-	show_stack(task, NULL, KERN_DEFAULT);
-	printk("\n%s/%d's [current] stackdump:\n\n",
-		current->comm, task_pid_nr(current));
-	dump_stack();
-	debug_show_all_locks();
-	rcu_read_unlock();
-
-	printk("[ turning off deadlock detection."
-	       "Please report this trace. ]\n\n");
-}
-
 void debug_rt_mutex_lock(struct rt_mutex *lock)
 {
 }
@@ -153,12 +60,10 @@ void debug_rt_mutex_proxy_unlock(struct rt_mutex *lock)
 void debug_rt_mutex_init_waiter(struct rt_mutex_waiter *waiter)
 {
 	memset(waiter, 0x11, sizeof(*waiter));
-	waiter->deadlock_task_pid = NULL;
 }
 
 void debug_rt_mutex_free_waiter(struct rt_mutex_waiter *waiter)
 {
-	put_pid(waiter->deadlock_task_pid);
 	memset(waiter, 0x22, sizeof(*waiter));
 }
 
@@ -168,10 +73,8 @@ void debug_rt_mutex_init(struct rt_mutex *lock, const char *name, struct lock_cl
 	 * Make sure we are not reinitializing a held lock:
 	 */
 	debug_check_no_locks_freed((void *)lock, sizeof(*lock));
-	lock->name = name;
 
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 	lockdep_init_map(&lock->dep_map, name, key, 0);
 #endif
 }
-