Release 4.12 include/linux/debug_locks.h

#ifndef __LINUX_DEBUG_LOCKING_H

#define __LINUX_DEBUG_LOCKING_H

#include <linux/kernel.h>
#include <linux/atomic.h>
#include <linux/bug.h>

struct task_struct;

extern int debug_locks;
extern int debug_locks_silent;




static inline int __debug_locks_off(void)
{
	return xchg(&debug_locks, 0);
}

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/*
 * 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)
{
}

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static inline void debug_show_held_locks(struct task_struct *task)
{
}

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static inline void

debug_check_no_locks_freed(const void *from, unsigned long len)
{
}

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static inline void

debug_check_no_locks_held(void)
{
}
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#endif

#endif
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Directory: include/linux

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