xref: /linux/kernel/trace/trace_output.h (revision 1ac731c529cd4d6adbce134754b51ff7d822b145)
1 // SPDX-License-Identifier: GPL-2.0
2 #ifndef __TRACE_EVENTS_H
3 #define __TRACE_EVENTS_H
4 
5 #include <linux/trace_seq.h>
6 #include "trace.h"
7 
8 extern enum print_line_t
9 trace_print_bputs_msg_only(struct trace_iterator *iter);
10 extern enum print_line_t
11 trace_print_bprintk_msg_only(struct trace_iterator *iter);
12 extern enum print_line_t
13 trace_print_printk_msg_only(struct trace_iterator *iter);
14 
15 extern int
16 seq_print_ip_sym(struct trace_seq *s, unsigned long ip,
17 		unsigned long sym_flags);
18 
19 extern void trace_seq_print_sym(struct trace_seq *s, unsigned long address, bool offset);
20 extern int trace_print_context(struct trace_iterator *iter);
21 extern int trace_print_lat_context(struct trace_iterator *iter);
22 extern enum print_line_t print_event_fields(struct trace_iterator *iter,
23 					    struct trace_event *event);
24 
25 extern void trace_event_read_lock(void);
26 extern void trace_event_read_unlock(void);
27 extern struct trace_event *ftrace_find_event(int type);
28 
29 extern enum print_line_t trace_nop_print(struct trace_iterator *iter,
30 					 int flags, struct trace_event *event);
31 extern int
32 trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry);
33 
34 /* used by module unregistering */
35 extern int __unregister_trace_event(struct trace_event *event);
36 extern struct rw_semaphore trace_event_sem;
37 
38 #define SEQ_PUT_FIELD(s, x)				\
39 	trace_seq_putmem(s, &(x), sizeof(x))
40 
41 #define SEQ_PUT_HEX_FIELD(s, x)				\
42 	trace_seq_putmem_hex(s, &(x), sizeof(x))
43 
44 #endif
45 
46