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
8extern enum print_line_t
9trace_print_bputs_msg_only(struct trace_iterator *iter);
10extern enum print_line_t
11trace_print_bprintk_msg_only(struct trace_iterator *iter);
12extern enum print_line_t
13trace_print_printk_msg_only(struct trace_iterator *iter);
14
15extern int
16seq_print_ip_sym(struct trace_seq *s, unsigned long ip,
17 unsigned long sym_flags);
18
19extern void trace_seq_print_sym(struct trace_seq *s, unsigned long address, bool offset);
20extern int trace_print_context(struct trace_iterator *iter);
21extern int trace_print_lat_context(struct trace_iterator *iter);
22extern enum print_line_t print_event_fields(struct trace_iterator *iter,
23 struct trace_event *event);
24
25extern void trace_event_read_lock(void);
26extern void trace_event_read_unlock(void);
27extern struct trace_event *ftrace_find_event(int type);
28
29extern enum print_line_t trace_nop_print(struct trace_iterator *iter,
30 int flags, struct trace_event *event);
31extern int
32trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry);
33
34/* used by module unregistering */
35extern int __unregister_trace_event(struct trace_event *event);
36extern 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#ifdef CONFIG_FUNCTION_TRACE_ARGS
45void print_function_args(struct trace_seq *s, unsigned long *args,
46 unsigned long func);
47#else
48static inline void print_function_args(struct trace_seq *s, unsigned long *args,
49 unsigned long func) {
50 trace_seq_puts(s, str: "()");
51}
52#endif
53#endif
54
55