#ifndef __TRACE_EVENTS_H
  #define __TRACE_EVENTS_H

  #include <linux/trace_seq.h>

  #include "trace.h"

  extern enum print_line_t
  trace_print_bprintk_msg_only(struct trace_iterator *iter);
  extern enum print_line_t
  trace_print_printk_msg_only(struct trace_iterator *iter);

  extern int

  seq_print_ip_sym(struct trace_seq *s, unsigned long ip,
  		unsigned long sym_flags);

  extern int seq_print_userip_objs(const struct userstack_entry *entry,
  				 struct trace_seq *s, unsigned long sym_flags);
  extern int seq_print_user_ip(struct trace_seq *s, struct mm_struct *mm,
  			     unsigned long ip, unsigned long sym_flags);

  extern int trace_print_context(struct trace_iterator *iter);
  extern int trace_print_lat_context(struct trace_iterator *iter);

  extern void trace_event_read_lock(void);
  extern void trace_event_read_unlock(void);

  extern struct trace_event *ftrace_find_event(int type);

  extern enum print_line_t trace_nop_print(struct trace_iterator *iter,

  					 int flags, struct trace_event *event);

  extern int
  trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry);

  /* used by module unregistering */
  extern int __unregister_ftrace_event(struct trace_event *event);
  extern struct rw_semaphore trace_event_mutex;

  #define MAX_MEMHEX_BYTES	8
  #define HEX_CHARS		(MAX_MEMHEX_BYTES*2 + 1)

  #define SEQ_PUT_FIELD_RET(s, x)				\
  do {							\
  	if (!trace_seq_putmem(s, &(x), sizeof(x)))	\

  		return TRACE_TYPE_PARTIAL_LINE;		\

  } while (0)
  
  #define SEQ_PUT_HEX_FIELD_RET(s, x)			\
  do {							\
  	BUILD_BUG_ON(sizeof(x) > MAX_MEMHEX_BYTES);	\
  	if (!trace_seq_putmem_hex(s, &(x), sizeof(x)))	\

  		return TRACE_TYPE_PARTIAL_LINE;		\

  } while (0)

  #endif