diff options
Diffstat (limited to 'kernel/locking/mutex.h')
| -rw-r--r-- | kernel/locking/mutex.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/locking/mutex.h b/kernel/locking/mutex.h index 9ad4da8cea00..3e263e98e5fc 100644 --- a/kernel/locking/mutex.h +++ b/kernel/locking/mutex.h @@ -7,6 +7,7 @@ * Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com> */ #ifndef CONFIG_PREEMPT_RT +#include <linux/mutex.h> /* * This is the control structure for tasks blocked on mutex, which resides * on the blocked task's kernel stack: @@ -47,6 +48,12 @@ static inline struct task_struct *__mutex_owner(struct mutex *lock) return (struct task_struct *)(atomic_long_read(&lock->owner) & ~MUTEX_FLAGS); } +static inline struct mutex *get_task_blocked_on(struct task_struct *p) +{ + guard(raw_spinlock_irqsave)(&p->blocked_lock); + return __get_task_blocked_on(p); +} + #ifdef CONFIG_DEBUG_MUTEXES extern void debug_mutex_lock_common(struct mutex *lock, struct mutex_waiter *waiter); |