/* $NetBSD: lockdep.h,v 1.9 2021/12/19 11:49:12 riastradh Exp $ */
/*-
* Copyright (c) 2018 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Taylor R. Campbell.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _LINUX_LOCKDEP_H_
#define _LINUX_LOCKDEP_H_
#include <sys/cdefs.h>
#include <sys/types.h>
#include <lib/libkern/libkern.h>
struct lock_class_key;
struct mutex;
struct spinlock;
#define __acquires(lock) /* XXX lockdep annotation */
#define __releases(lock) /* XXX lockdep annotation */
#define mutex_acquire(m, x, y, ip) __nothing
#define mutex_release(m, ip) __nothing
#define __lockdep_used __unused
#define lockdep_init_map(a,b,c,d) __nothing
#define lock_acquire_shared_recursive(l, s, t, n, i) __nothing
#define lock_release(l, n) __nothing
#ifdef notyet
#define lockdep_assert_held(m) KDASSERT(lockdep_is_held(m))
#define lockdep_assert_held_once(m) KDASSERT(lockdep_is_held(m))
#define lockdep_is_held(m) mutex_owned(__lockdep_kmutex(m))
#define might_lock(m) \
KDASSERT(mutex_ownable(__lockdep_kmutex(m)))
#else
#define lockdep_assert_held(m) do {} while (0)
#define lockdep_assert_held_once(m) do {} while (0)
#define lockdep_is_held(m) 1
#define might_lock(m) do {} while (0)
#define might_lock_nested(m,n) do {} while (0)
#endif
#define __lockdep_kmutex(m) \
(__builtin_types_compatible_p(typeof(*(m)), struct mutex) ? \
&((const struct mutex *)(m))->mtx_lock \
: __builtin_types_compatible_p(typeof(*(m)), struct spinlock) ? \
&((const struct spinlock *)(m))->sl_lock \
: NULL)
#define SINGLE_DEPTH_NESTING 0
struct pin_cookie {
int dummy;
};
static inline struct pin_cookie
lockdep_pin_lock(struct mutex *m)
{
return (struct pin_cookie) { (int)(intptr_t)m };
}
static inline void
lockdep_unpin_lock(struct mutex *m, struct pin_cookie cookie)
{
KASSERT(cookie.dummy == (int)(intptr_t)m);
}
static inline void
lockdep_set_class(void *m, struct lock_class_key *ck)
{
}
static inline void
lockdep_set_subclass(void *m, unsigned subclass)
{
}
#endif /* _LINUX_LOCKDEP_H_ */