linux-imx

/* SPDX-License-Identifier: GPL-2.0 */

/*

 * RT-Mutexes: blocking mutual exclusion locks with PI support

 *

 * started by Ingo Molnar and Thomas Gleixner:

 *

 *  Copyright (C) 2004-2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>

 *  Copyright (C) 2006, Timesys Corp., Thomas Gleixner <tglx@timesys.com>

 *

 * This file contains macros used solely by rtmutex.c. Debug version.

 */

​

extern void debug_rt_mutex_init_waiter(struct rt_mutex_waiter *waiter);

extern void debug_rt_mutex_free_waiter(struct rt_mutex_waiter *waiter);

extern void debug_rt_mutex_init(struct rt_mutex *lock, const char *name, struct lock_class_key *key);

extern void debug_rt_mutex_lock(struct rt_mutex *lock);

extern void debug_rt_mutex_unlock(struct rt_mutex *lock);

extern void debug_rt_mutex_proxy_lock(struct rt_mutex *lock,

                      struct task_struct *powner);

extern void debug_rt_mutex_proxy_unlock(struct rt_mutex *lock);

extern void debug_rt_mutex_deadlock(enum rtmutex_chainwalk chwalk,

                    struct rt_mutex_waiter *waiter,

                    struct rt_mutex *lock);

extern void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter);

# define debug_rt_mutex_reset_waiter(w)         \

    do { (w)->deadlock_lock = NULL; } while (0)

​

static inline bool debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter,

                          enum rtmutex_chainwalk walk)

{

    return (waiter != NULL);

}

​

static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)

{

    debug_rt_mutex_print_deadlock(w);

}