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 | #define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask)) |
8 | #define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a)-1) |
9 | |
10 | struct ksym { |
11 | long addr; |
12 | char *name; |
13 | }; |
14 | struct ksyms; |
15 | |
16 | int load_kallsyms(void); |
17 | struct ksym *ksym_search(long key); |
18 | long ksym_get_addr(const char *name); |
19 | |
20 | struct ksyms *load_kallsyms_local(void); |
21 | struct ksym *ksym_search_local(struct ksyms *ksyms, long key); |
22 | long ksym_get_addr_local(struct ksyms *ksyms, const char *name); |
23 | void free_kallsyms_local(struct ksyms *ksyms); |
24 | |
25 | /* open kallsyms and find addresses on the fly, faster than load + search. */ |
26 | int kallsyms_find(const char *sym, unsigned long long *addr); |
27 | |
28 | void read_trace_pipe(void); |
29 | |
30 | ssize_t get_uprobe_offset(const void *addr); |
31 | ssize_t get_rel_offset(uintptr_t addr); |
32 | |
33 | int read_build_id(const char *path, char *build_id, size_t size); |
34 | |
35 | #endif |
36 | |