| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __LINUX_DEBUG_LOCKING_H |
| #define __LINUX_DEBUG_LOCKING_H |
| |
| #include <linux/atomic.h> |
| #include <linux/bug.h> |
| #include <linux/printk.h> |
| |
| struct task_struct; |
| |
| extern int debug_locks __read_mostly; |
| extern int debug_locks_silent __read_mostly; |
| |
| |
| static __always_inline int __debug_locks_off(void) |
| { |
| return xchg(&debug_locks, 0); |
| } |
| |
| /* |
| * Generic 'turn off all lock debugging' function: |
| */ |
| extern int debug_locks_off(void); |
| |
| #define DEBUG_LOCKS_WARN_ON(c) \ |
| ({ \ |
| int __ret = 0; \ |
| \ |
| if (!oops_in_progress && unlikely(c)) { \ |
| if (debug_locks_off() && !debug_locks_silent) \ |
| WARN(1, "DEBUG_LOCKS_WARN_ON(%s)", #c); \ |
| __ret = 1; \ |
| } \ |
| __ret; \ |
| }) |
| |
| #ifdef CONFIG_SMP |
| # define SMP_DEBUG_LOCKS_WARN_ON(c) DEBUG_LOCKS_WARN_ON(c) |
| #else |
| # define SMP_DEBUG_LOCKS_WARN_ON(c) do { } while (0) |
| #endif |
| |
| #ifdef CONFIG_DEBUG_LOCKING_API_SELFTESTS |
| extern void locking_selftest(void); |
| #else |
| # define locking_selftest() do { } while (0) |
| #endif |
| |
| struct task_struct; |
| |
| #ifdef CONFIG_LOCKDEP |
| extern void debug_show_all_locks(void); |
| extern void debug_show_held_locks(struct task_struct *task); |
| extern void debug_check_no_locks_freed(const void *from, unsigned long len); |
| extern void debug_check_no_locks_held(void); |
| #else |
| static inline void debug_show_all_locks(void) |
| { |
| } |
| |
| static inline void debug_show_held_locks(struct task_struct *task) |
| { |
| } |
| |
| static inline void |
| debug_check_no_locks_freed(const void *from, unsigned long len) |
| { |
| } |
| |
| static inline void |
| debug_check_no_locks_held(void) |
| { |
| } |
| #endif |
| |
| #endif |