linux/kernel/locking/mutex-debug.c

/*
 * Debugging code for mutexes
 *
 * Started by Ingo Molnar:
 *
 *  Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <[email protected]>
 *
 * lock debugging, locking tree, deadlock detection started by:
 *
 *  Copyright (C) 2004, LynuxWorks, Inc., Igor Manyilov, Bill Huey
 *  Released under the General Public License (GPL).
 */
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/export.h>
#include <linux/poison.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/kallsyms.h>
#include <linux/interrupt.h>
#include <linux/debug_locks.h>

#include "mutex.h"

/*
 * Must be called with lock->wait_lock held.
 */
void debug_mutex_lock_common(struct mutex *lock, struct mutex_waiter *waiter)
{ … }

void debug_mutex_wake_waiter(struct mutex *lock, struct mutex_waiter *waiter)
{ … }

void debug_mutex_free_waiter(struct mutex_waiter *waiter)
{ … }

void debug_mutex_add_waiter(struct mutex *lock, struct mutex_waiter *waiter,
			    struct task_struct *task)
{ … }

void debug_mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,
			 struct task_struct *task)
{ … }

void debug_mutex_unlock(struct mutex *lock)
{ … }

void debug_mutex_init(struct mutex *lock, const char *name,
		      struct lock_class_key *key)
{ … }

static void devm_mutex_release(void *res)
{ … }

int __devm_mutex_init(struct device *dev, struct mutex *lock)
{ … }
EXPORT_SYMBOL_GPL(…);

/***
 * mutex_destroy - mark a mutex unusable
 * @lock: the mutex to be destroyed
 *
 * This function marks the mutex uninitialized, and any subsequent
 * use of the mutex is forbidden. The mutex must not be locked when
 * this function is called.
 */
void mutex_destroy(struct mutex *lock)
{ … }

EXPORT_SYMBOL_GPL(…);