1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __TRACE_HELPER_H
3 #define __TRACE_HELPER_H
4 
5 #include <bpf/libbpf.h>
6 
7 struct ksym {
8 	long addr;
9 	char *name;
10 };
11 
12 int load_kallsyms(void);
13 int load_kallsyms_refresh(void);
14 
15 struct ksym *ksym_search(long key);
16 long ksym_get_addr(const char *name);
17 
18 /* open kallsyms and find addresses on the fly, faster than load + search. */
19 int kallsyms_find(const char *sym, unsigned long long *addr);
20 
21 void read_trace_pipe(void);
22 
23 ssize_t get_uprobe_offset(const void *addr);
24 ssize_t get_rel_offset(uintptr_t addr);
25 
26 #endif
27