1 /* SPDX-License-Identifier: GPL-2.0 */ <<
2 /* 1 /*
3 * RT-Mutexes: blocking mutual exclusion locks 2 * RT-Mutexes: blocking mutual exclusion locks with PI support
4 * 3 *
5 * started by Ingo Molnar and Thomas Gleixner: 4 * started by Ingo Molnar and Thomas Gleixner:
6 * 5 *
7 * Copyright (C) 2004-2006 Red Hat, Inc., Ing 6 * Copyright (C) 2004-2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
8 * Copyright (C) 2006, Timesys Corp., Thomas 7 * Copyright (C) 2006, Timesys Corp., Thomas Gleixner <tglx@timesys.com>
9 * 8 *
10 * This file contains macros used solely by rt 9 * This file contains macros used solely by rtmutex.c. Debug version.
11 */ 10 */
12 11
>> 12 extern void
>> 13 rt_mutex_deadlock_account_lock(struct rt_mutex *lock, struct task_struct *task);
>> 14 extern void rt_mutex_deadlock_account_unlock(struct task_struct *task);
13 extern void debug_rt_mutex_init_waiter(struct 15 extern void debug_rt_mutex_init_waiter(struct rt_mutex_waiter *waiter);
14 extern void debug_rt_mutex_free_waiter(struct 16 extern void debug_rt_mutex_free_waiter(struct rt_mutex_waiter *waiter);
15 extern void debug_rt_mutex_init(struct rt_mute !! 17 extern void debug_rt_mutex_init(struct rt_mutex *lock, const char *name);
16 extern void debug_rt_mutex_lock(struct rt_mute 18 extern void debug_rt_mutex_lock(struct rt_mutex *lock);
17 extern void debug_rt_mutex_unlock(struct rt_mu 19 extern void debug_rt_mutex_unlock(struct rt_mutex *lock);
18 extern void debug_rt_mutex_proxy_lock(struct r 20 extern void debug_rt_mutex_proxy_lock(struct rt_mutex *lock,
19 struct t 21 struct task_struct *powner);
20 extern void debug_rt_mutex_proxy_unlock(struct 22 extern void debug_rt_mutex_proxy_unlock(struct rt_mutex *lock);
21 extern void debug_rt_mutex_deadlock(enum rtmut 23 extern void debug_rt_mutex_deadlock(enum rtmutex_chainwalk chwalk,
22 struct rt_ 24 struct rt_mutex_waiter *waiter,
23 struct rt_ 25 struct rt_mutex *lock);
24 extern void debug_rt_mutex_print_deadlock(stru 26 extern void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter);
25 # define debug_rt_mutex_reset_waiter(w) 27 # define debug_rt_mutex_reset_waiter(w) \
26 do { (w)->deadlock_lock = NULL; } whil 28 do { (w)->deadlock_lock = NULL; } while (0)
27 29
28 static inline bool debug_rt_mutex_detect_deadl 30 static inline bool debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter,
29 31 enum rtmutex_chainwalk walk)
30 { 32 {
31 return (waiter != NULL); 33 return (waiter != NULL);
32 } 34 }
33 35
34 static inline void rt_mutex_print_deadlock(str 36 static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)
35 { 37 {
36 debug_rt_mutex_print_deadlock(w); 38 debug_rt_mutex_print_deadlock(w);
37 } 39 }
38 40
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