Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
trace_output.h
Go to the documentation of this file.
1 #ifndef __TRACE_EVENTS_H
2 #define __TRACE_EVENTS_H
3 
4 #include <linux/trace_seq.h>
5 #include "trace.h"
6 
7 extern enum print_line_t
9 extern enum print_line_t
11 
12 extern int
13 seq_print_ip_sym(struct trace_seq *s, unsigned long ip,
14  unsigned long sym_flags);
15 extern int seq_print_userip_objs(const struct userstack_entry *entry,
16  struct trace_seq *s, unsigned long sym_flags);
17 extern int seq_print_user_ip(struct trace_seq *s, struct mm_struct *mm,
18  unsigned long ip, unsigned long sym_flags);
19 
20 extern int trace_print_context(struct trace_iterator *iter);
21 extern int trace_print_lat_context(struct trace_iterator *iter);
22 
23 extern void trace_event_read_lock(void);
24 extern void trace_event_read_unlock(void);
25 extern struct trace_event *ftrace_find_event(int type);
26 
27 extern enum print_line_t trace_nop_print(struct trace_iterator *iter,
28  int flags, struct trace_event *event);
29 extern int
31 
32 /* used by module unregistering */
33 extern int __unregister_ftrace_event(struct trace_event *event);
34 extern struct rw_semaphore trace_event_mutex;
35 
36 #define MAX_MEMHEX_BYTES 8
37 #define HEX_CHARS (MAX_MEMHEX_BYTES*2 + 1)
38 
39 #define SEQ_PUT_FIELD_RET(s, x) \
40 do { \
41  if (!trace_seq_putmem(s, &(x), sizeof(x))) \
42  return TRACE_TYPE_PARTIAL_LINE; \
43 } while (0)
44 
45 #define SEQ_PUT_HEX_FIELD_RET(s, x) \
46 do { \
47  BUILD_BUG_ON(sizeof(x) > MAX_MEMHEX_BYTES); \
48  if (!trace_seq_putmem_hex(s, &(x), sizeof(x))) \
49  return TRACE_TYPE_PARTIAL_LINE; \
50 } while (0)
51 
52 #endif
53