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