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/*-
* Copyright (c) 2025 The FreeBSD Foundation
* Copyright (c) 2025 Jean-Sébastien Pédron
*
* This software was developed by Jean-Sébastien Pédron under sponsorship
* from the FreeBSD Foundation.
*
* 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 AUTHOR 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 AUTHOR 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 _LINUXKPI_LINUX_REF_TRACKER_H_
#define _LINUXKPI_LINUX_REF_TRACKER_H_
#include <linux/refcount.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/stackdepot.h>
struct ref_tracker;
struct ref_tracker_dir {
};
/*
* The following functions currently have dummy implementations that, on Linux,
* are used when CONFIG_REF_TRACKER is not set at compile time.
*
* The ref tracker is a tool to associate a refcount increase to a refcount
* decrease. This helps developers track, document and debug refcounts. We
* don't need this feature for now in linuxkpi.
*/
static inline void
ref_tracker_dir_init(struct ref_tracker_dir *dir,
unsigned int quarantine_count, const char *name)
{
}
static inline void
ref_tracker_dir_exit(struct ref_tracker_dir *dir)
{
}
static inline void
ref_tracker_dir_print_locked(struct ref_tracker_dir *dir,
unsigned int display_limit)
{
}
static inline void
ref_tracker_dir_print(struct ref_tracker_dir *dir, unsigned int display_limit)
{
}
static inline int
ref_tracker_dir_snprint(struct ref_tracker_dir *dir, char *buf, size_t size)
{
return (0);
}
static inline int
ref_tracker_alloc(struct ref_tracker_dir *dir, struct ref_tracker **trackerp,
gfp_t gfp)
{
return (0);
}
static inline int
ref_tracker_free(struct ref_tracker_dir *dir, struct ref_tracker **trackerp)
{
return (0);
}
#endif /* !defined(_LINUXKPI_LINUX_REF_TRACKER_H_) */
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