linux/include/linux/ref_tracker.h

// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef _LINUX_REF_TRACKER_H
#define _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 { … };

#ifdef CONFIG_REF_TRACKER

static inline void ref_tracker_dir_init(struct ref_tracker_dir *dir,
					unsigned int quarantine_count,
					const char *name)
{ … }

void ref_tracker_dir_exit(struct ref_tracker_dir *dir);

void ref_tracker_dir_print_locked(struct ref_tracker_dir *dir,
				  unsigned int display_limit);

void ref_tracker_dir_print(struct ref_tracker_dir *dir,
			   unsigned int display_limit);

int ref_tracker_dir_snprint(struct ref_tracker_dir *dir, char *buf, size_t size);

int ref_tracker_alloc(struct ref_tracker_dir *dir,
		      struct ref_tracker **trackerp, gfp_t gfp);

int ref_tracker_free(struct ref_tracker_dir *dir,
		     struct ref_tracker **trackerp);

#else /* CONFIG_REF_TRACKER */

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

#endif /* _LINUX_REF_TRACKER_H */