lock.h

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#undef TRACE_SYSTEM
#define TRACE_SYSTEM lock

#if !defined(_TRACE_LOCK_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_LOCK_H

#include <linux/lockdep.h>
#include <linux/tracepoint.h>

#ifdef CONFIG_LOCKDEP

TRACE_EVENT(lock_acquire,

    TP_PROTO(struct lockdep_map *lock, unsigned int subclass,
        int trylock, int read, int check,
        struct lockdep_map *next_lock, unsigned long ip),

    TP_ARGS(lock, subclass, trylock, read, check, next_lock, ip),

    TP_STRUCT__entry(
        __field(unsigned int, flags)
        __string(name, lock->name)
        __field(void *, lockdep_addr)
    ),

    TP_fast_assign(
        __entry->flags = (trylock ? 1 : 0) | (read ? 2 : 0);
        __assign_str(name, lock->name);
        __entry->lockdep_addr = lock;
    ),

    TP_printk("%p %s%s%s", __entry->lockdep_addr,
          (__entry->flags & 1) ? "try " : "",
          (__entry->flags & 2) ? "read " : "",
          __get_str(name))
);

DECLARE_EVENT_CLASS(lock,

    TP_PROTO(struct lockdep_map *lock, unsigned long ip),

    TP_ARGS(lock, ip),

    TP_STRUCT__entry(
        __string(   name,   lock->name  )
        __field(    void *, lockdep_addr    )
    ),

    TP_fast_assign(
        __assign_str(name, lock->name);
        __entry->lockdep_addr = lock;
    ),

    TP_printk("%p %s",  __entry->lockdep_addr, __get_str(name))
);

DEFINE_EVENT(lock, lock_release,

    TP_PROTO(struct lockdep_map *lock, unsigned long ip),

    TP_ARGS(lock, ip)
);

#ifdef CONFIG_LOCK_STAT

DEFINE_EVENT(lock, lock_contended,

    TP_PROTO(struct lockdep_map *lock, unsigned long ip),

    TP_ARGS(lock, ip)
);

DEFINE_EVENT(lock, lock_acquired,

    TP_PROTO(struct lockdep_map *lock, unsigned long ip),

    TP_ARGS(lock, ip)
);

#endif
#endif

#endif /* _TRACE_LOCK_H */

/* This part must be outside protection */
#include <trace/define_trace.h>