blob: 7612fbc62d701b2ab95b52f4fbbe4265055b23ee [file] [log] [blame]
Ingo Molnare7eebaf2006-06-27 02:54:55 -07001/*
2 * RT-Mutexes: blocking mutual exclusion locks with PI support
3 *
4 * started by Ingo Molnar and Thomas Gleixner:
5 *
6 * Copyright (C) 2004-2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
7 * Copyright (C) 2006, Timesys Corp., Thomas Gleixner <tglx@timesys.com>
8 *
9 * This file contains macros used solely by rtmutex.c. Debug version.
10 */
11
12#define __IP_DECL__ , unsigned long ip
13#define __IP__ , ip
14#define __RET_IP__ , (unsigned long)__builtin_return_address(0)
15
16extern void
17rt_mutex_deadlock_account_lock(struct rt_mutex *lock, struct task_struct *task);
18extern void rt_mutex_deadlock_account_unlock(struct task_struct *task);
19extern void debug_rt_mutex_init_waiter(struct rt_mutex_waiter *waiter);
20extern void debug_rt_mutex_free_waiter(struct rt_mutex_waiter *waiter);
21extern void debug_rt_mutex_init(struct rt_mutex *lock, const char *name);
22extern void debug_rt_mutex_lock(struct rt_mutex *lock __IP_DECL__);
23extern void debug_rt_mutex_unlock(struct rt_mutex *lock);
24extern void debug_rt_mutex_proxy_lock(struct rt_mutex *lock,
25 struct task_struct *powner __IP_DECL__);
26extern void debug_rt_mutex_proxy_unlock(struct rt_mutex *lock);
27extern void debug_rt_mutex_deadlock(int detect, struct rt_mutex_waiter *waiter,
28 struct rt_mutex *lock);
29extern void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter);
30# define debug_rt_mutex_reset_waiter(w) \
31 do { (w)->deadlock_lock = NULL; } while (0)
32
33static inline int debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter,
34 int detect)
35{
36 return (waiter != NULL);
37}