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
seq_print_ip_sym_offset(struct trace_seq * s,unsigned long ip,unsigned long sym_flags)19 static inline int seq_print_ip_sym_offset(struct trace_seq *s, unsigned long ip,
20 unsigned long sym_flags)
21 {
22 return seq_print_ip_sym(s, ip, sym_flags | TRACE_ITER(SYM_OFFSET));
23 }
seq_print_ip_sym_no_offset(struct trace_seq * s,unsigned long ip,unsigned long sym_flags)24 static inline int seq_print_ip_sym_no_offset(struct trace_seq *s, unsigned long ip,
25 unsigned long sym_flags)
26 {
27 return seq_print_ip_sym(s, ip, sym_flags & ~TRACE_ITER(SYM_OFFSET));
28 }
29
30 extern void trace_seq_print_sym(struct trace_seq *s, unsigned long address, bool offset);
31 extern int trace_print_context(struct trace_iterator *iter);
32 extern int trace_print_lat_context(struct trace_iterator *iter);
33 extern enum print_line_t print_event_fields(struct trace_iterator *iter,
34 struct trace_event *event);
35
36 extern void trace_event_read_lock(void);
37 extern void trace_event_read_unlock(void);
38 extern struct trace_event *ftrace_find_event(int type);
39
40 extern enum print_line_t trace_nop_print(struct trace_iterator *iter,
41 int flags, struct trace_event *event);
42 extern int
43 trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry);
44
45 /* used by module unregistering */
46 extern int __unregister_trace_event(struct trace_event *event);
47 extern struct rw_semaphore trace_event_sem;
48
49 #define SEQ_PUT_FIELD(s, x) \
50 trace_seq_putmem(s, &(x), sizeof(x))
51
52 #define SEQ_PUT_HEX_FIELD(s, x) \
53 trace_seq_putmem_hex(s, &(x), sizeof(x))
54
55 #ifdef CONFIG_FUNCTION_TRACE_ARGS
56 void print_function_args(struct trace_seq *s, unsigned long *args,
57 unsigned long func);
58 #else
print_function_args(struct trace_seq * s,unsigned long * args,unsigned long func)59 static inline void print_function_args(struct trace_seq *s, unsigned long *args,
60 unsigned long func) {
61 trace_seq_puts(s, "()");
62 }
63 #endif
64 #endif
65
66