https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: e8d018dd0257f744ca50a729e3d042cf2ec9da65 authored by Linus Torvalds on 19 March 2023, 20:27:55 UTC
Linux 6.3-rc3
Linux 6.3-rc3
Tip revision: e8d018d
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
spinlock_t lock;
unsigned int quarantine_avail;
refcount_t untracked;
refcount_t no_tracker;
bool dead;
struct list_head list; /* List of active trackers */
struct list_head quarantine; /* List of dead trackers */
#endif
};
#ifdef CONFIG_REF_TRACKER
static inline void ref_tracker_dir_init(struct ref_tracker_dir *dir,
unsigned int quarantine_count)
{
INIT_LIST_HEAD(&dir->list);
INIT_LIST_HEAD(&dir->quarantine);
spin_lock_init(&dir->lock);
dir->quarantine_avail = quarantine_count;
dir->dead = false;
refcount_set(&dir->untracked, 1);
refcount_set(&dir->no_tracker, 1);
stack_depot_init();
}
void ref_tracker_dir_exit(struct ref_tracker_dir *dir);
void ref_tracker_dir_print(struct ref_tracker_dir *dir,
unsigned int display_limit);
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)
{
}
static inline void ref_tracker_dir_exit(struct ref_tracker_dir *dir)
{
}
static inline void ref_tracker_dir_print(struct ref_tracker_dir *dir,
unsigned int display_limit)
{
}
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 */