1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Mutexes: blocking mutual exclusion locks
 4 *
 5 * started by Ingo Molnar:
 6 *
 7 *  Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
 8 *
 9 * This file contains mutex debugging related internal declarations,
10 * prototypes and inline functions, for the CONFIG_DEBUG_MUTEXES case.
11 * More details are in kernel/mutex-debug.c.
12 */
13
14/*
15 * This must be called with lock->wait_lock held.
16 */
17extern void debug_mutex_lock_common(struct mutex *lock,
18				    struct mutex_waiter *waiter);
19extern void debug_mutex_wake_waiter(struct mutex *lock,
20				    struct mutex_waiter *waiter);
21extern void debug_mutex_free_waiter(struct mutex_waiter *waiter);
22extern void debug_mutex_add_waiter(struct mutex *lock,
23				   struct mutex_waiter *waiter,
24				   struct task_struct *task);
25extern void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,
26				struct task_struct *task);
27extern void debug_mutex_unlock(struct mutex *lock);
28extern void debug_mutex_init(struct mutex *lock, const char *name,
29			     struct lock_class_key *key);

 
 1/*
 2 * Mutexes: blocking mutual exclusion locks
 3 *
 4 * started by Ingo Molnar:
 5 *
 6 *  Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
 7 *
 8 * This file contains mutex debugging related internal declarations,
 9 * prototypes and inline functions, for the CONFIG_DEBUG_MUTEXES case.
10 * More details are in kernel/mutex-debug.c.
11 */
12
13/*
14 * This must be called with lock->wait_lock held.
15 */
16extern void debug_mutex_lock_common(struct mutex *lock,
17				    struct mutex_waiter *waiter);
18extern void debug_mutex_wake_waiter(struct mutex *lock,
19				    struct mutex_waiter *waiter);
20extern void debug_mutex_free_waiter(struct mutex_waiter *waiter);
21extern void debug_mutex_add_waiter(struct mutex *lock,
22				   struct mutex_waiter *waiter,
23				   struct task_struct *task);
24extern void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,
25				struct task_struct *task);
26extern void debug_mutex_unlock(struct mutex *lock);
27extern void debug_mutex_init(struct mutex *lock, const char *name,
28			     struct lock_class_key *key);
29
30#define spin_lock_mutex(lock, flags)			\
31	do {						\
32		struct mutex *l = container_of(lock, struct mutex, wait_lock); \
33							\
34		DEBUG_LOCKS_WARN_ON(in_interrupt());	\
35		local_irq_save(flags);			\
36		arch_spin_lock(&(lock)->rlock.raw_lock);\
37		DEBUG_LOCKS_WARN_ON(l->magic != l);	\
38	} while (0)
39
40#define spin_unlock_mutex(lock, flags)				\
41	do {							\
42		arch_spin_unlock(&(lock)->rlock.raw_lock);	\
43		local_irq_restore(flags);			\
44		preempt_check_resched();			\
45	} while (0)