1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LINUX_DEBUG_LOCKING_H
3 #define __LINUX_DEBUG_LOCKING_H
5 #include <linux/atomic.h>
7 #include <linux/printk.h>
11 extern int debug_locks __read_mostly
;
12 extern int debug_locks_silent __read_mostly
;
15 static __always_inline
int __debug_locks_off(void)
17 return xchg(&debug_locks
, 0);
21 * Generic 'turn off all lock debugging' function:
23 extern int debug_locks_off(void);
25 #define DEBUG_LOCKS_WARN_ON(c) \
29 if (!oops_in_progress && unlikely(c)) { \
30 instrumentation_begin(); \
31 if (debug_locks_off() && !debug_locks_silent) \
32 WARN(1, "DEBUG_LOCKS_WARN_ON(%s)", #c); \
33 instrumentation_end(); \
40 # define SMP_DEBUG_LOCKS_WARN_ON(c) DEBUG_LOCKS_WARN_ON(c)
42 # define SMP_DEBUG_LOCKS_WARN_ON(c) do { } while (0)
45 #ifdef CONFIG_DEBUG_LOCKING_API_SELFTESTS
46 extern void locking_selftest(void);
48 # define locking_selftest() do { } while (0)
54 extern void debug_show_all_locks(void);
55 extern void debug_show_held_locks(struct task_struct
*task
);
56 extern void debug_check_no_locks_freed(const void *from
, unsigned long len
);
57 extern void debug_check_no_locks_held(void);
59 static inline void debug_show_all_locks(void)
63 static inline void debug_show_held_locks(struct task_struct
*task
)
68 debug_check_no_locks_freed(const void *from
, unsigned long len
)
73 debug_check_no_locks_held(void)