1 // SPDX-License-Identifier: GPL-2.0-or-later
2 #ifndef _LINUX_REF_TRACKER_H
3 #define _LINUX_REF_TRACKER_H
4 #include <linux/refcount.h>
5 #include <linux/types.h>
6 #include <linux/spinlock.h>
7 #include <linux/stackdepot.h>
11 struct ref_tracker_dir {
12 #ifdef CONFIG_REF_TRACKER
14 unsigned int quarantine_avail;
16 refcount_t no_tracker;
18 struct list_head list; /* List of active trackers */
19 struct list_head quarantine; /* List of dead trackers */
23 #ifdef CONFIG_REF_TRACKER
24 static inline void ref_tracker_dir_init(struct ref_tracker_dir *dir,
25 unsigned int quarantine_count)
27 INIT_LIST_HEAD(&dir->list);
28 INIT_LIST_HEAD(&dir->quarantine);
29 spin_lock_init(&dir->lock);
30 dir->quarantine_avail = quarantine_count;
32 refcount_set(&dir->untracked, 1);
33 refcount_set(&dir->no_tracker, 1);
37 void ref_tracker_dir_exit(struct ref_tracker_dir *dir);
39 void ref_tracker_dir_print(struct ref_tracker_dir *dir,
40 unsigned int display_limit);
42 int ref_tracker_alloc(struct ref_tracker_dir *dir,
43 struct ref_tracker **trackerp, gfp_t gfp);
45 int ref_tracker_free(struct ref_tracker_dir *dir,
46 struct ref_tracker **trackerp);
48 #else /* CONFIG_REF_TRACKER */
50 static inline void ref_tracker_dir_init(struct ref_tracker_dir *dir,
51 unsigned int quarantine_count)
55 static inline void ref_tracker_dir_exit(struct ref_tracker_dir *dir)
59 static inline void ref_tracker_dir_print(struct ref_tracker_dir *dir,
60 unsigned int display_limit)
64 static inline int ref_tracker_alloc(struct ref_tracker_dir *dir,
65 struct ref_tracker **trackerp,
71 static inline int ref_tracker_free(struct ref_tracker_dir *dir,
72 struct ref_tracker **trackerp)
79 #endif /* _LINUX_REF_TRACKER_H */