x86: Merge the x86_32 and x86_64 cpu_idle() functions
[platform/adaptation/renesas_rcar/renesas_kernel.git] / kernel / mutex-debug.h
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  */
16 extern void debug_mutex_lock_common(struct mutex *lock,
17                                     struct mutex_waiter *waiter);
18 extern void debug_mutex_wake_waiter(struct mutex *lock,
19                                     struct mutex_waiter *waiter);
20 extern void debug_mutex_free_waiter(struct mutex_waiter *waiter);
21 extern void debug_mutex_add_waiter(struct mutex *lock,
22                                    struct mutex_waiter *waiter,
23                                    struct thread_info *ti);
24 extern void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,
25                                 struct thread_info *ti);
26 extern void debug_mutex_unlock(struct mutex *lock);
27 extern void debug_mutex_init(struct mutex *lock, const char *name,
28                              struct lock_class_key *key);
29
30 static inline void mutex_set_owner(struct mutex *lock)
31 {
32         lock->owner = current;
33 }
34
35 static inline void mutex_clear_owner(struct mutex *lock)
36 {
37         lock->owner = NULL;
38 }
39
40 #define spin_lock_mutex(lock, flags)                    \
41         do {                                            \
42                 struct mutex *l = container_of(lock, struct mutex, wait_lock); \
43                                                         \
44                 DEBUG_LOCKS_WARN_ON(in_interrupt());    \
45                 local_irq_save(flags);                  \
46                 arch_spin_lock(&(lock)->rlock.raw_lock);\
47                 DEBUG_LOCKS_WARN_ON(l->magic != l);     \
48         } while (0)
49
50 #define spin_unlock_mutex(lock, flags)                          \
51         do {                                                    \
52                 arch_spin_unlock(&(lock)->rlock.raw_lock);      \
53                 local_irq_restore(flags);                       \
54                 preempt_check_resched();                        \
55         } while (0)