1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * RT-Mutexes: blocking mutual exclusion locks with PI support
4 *
5 * started by Ingo Molnar and Thomas Gleixner:
6 *
7 * Copyright (C) 2004-2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
8 * Copyright (C) 2006, Timesys Corp., Thomas Gleixner <tglx@timesys.com>
9 *
10 * This file contains macros used solely by rtmutex.c. Debug version.
11 */
12
13 extern void debug_rt_mutex_init_waiter(struct rt_mutex_waiter *waiter);
14 extern void debug_rt_mutex_free_waiter(struct rt_mutex_waiter *waiter);
15 extern void debug_rt_mutex_init(struct rt_mutex *lock, const char *name, struct lock_class_key *key);
16 extern void debug_rt_mutex_lock(struct rt_mutex *lock);
17 extern void debug_rt_mutex_unlock(struct rt_mutex *lock);
18 extern void debug_rt_mutex_proxy_lock(struct rt_mutex *lock,
19 struct task_struct *powner);
20 extern void debug_rt_mutex_proxy_unlock(struct rt_mutex *lock);
21 extern void debug_rt_mutex_deadlock(enum rtmutex_chainwalk chwalk,
22 struct rt_mutex_waiter *waiter,
23 struct rt_mutex *lock);
24 extern void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter);
25 # define debug_rt_mutex_reset_waiter(w) \
26 do { (w)->deadlock_lock = NULL; } while (0)
27
debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter * waiter,enum rtmutex_chainwalk walk)28 static inline bool debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter,
29 enum rtmutex_chainwalk walk)
30 {
31 return (waiter != NULL);
32 }
33
rt_mutex_print_deadlock(struct rt_mutex_waiter * w)34 static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)
35 {
36 debug_rt_mutex_print_deadlock(w);
37 }
38