Yonghong Song | 28dbf86 | 2018-04-28 22:28:13 -0700 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef __TRACE_HELPER_H |
| 3 | #define __TRACE_HELPER_H |
| 4 | |
Toke Høiland-Jørgensen | 3e68914 | 2020-01-20 14:06:45 +0100 | [diff] [blame] | 5 | #include <bpf/libbpf.h> |
Jakub Kicinski | d0cabbb | 2018-05-10 10:24:40 -0700 | [diff] [blame] | 6 | |
Jiri Olsa | 88dc8b3 | 2023-03-31 11:31:56 +0200 | [diff] [blame] | 7 | #define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask)) |
| 8 | #define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a)-1) |
| 9 | |
Yonghong Song | 28dbf86 | 2018-04-28 22:28:13 -0700 | [diff] [blame] | 10 | struct ksym { |
| 11 | long addr; |
| 12 | char *name; |
| 13 | }; |
Rong Tao | c698eae | 2023-09-07 09:59:13 +0800 | [diff] [blame] | 14 | struct ksyms; |
Yonghong Song | 28dbf86 | 2018-04-28 22:28:13 -0700 | [diff] [blame] | 15 | |
Yonghong Song | 9475dac | 2024-03-25 21:15:08 -0700 | [diff] [blame] | 16 | typedef int (*ksym_cmp_t)(const void *p1, const void *p2); |
Yonghong Song | d1f0258 | 2024-03-25 21:15:13 -0700 | [diff] [blame] | 17 | typedef int (*ksym_search_cmp_t)(const void *p1, const struct ksym *p2); |
Yonghong Song | 9475dac | 2024-03-25 21:15:08 -0700 | [diff] [blame] | 18 | |
Yonghong Song | 28dbf86 | 2018-04-28 22:28:13 -0700 | [diff] [blame] | 19 | int load_kallsyms(void); |
| 20 | struct ksym *ksym_search(long key); |
Yonghong Song | 73bc4d9 | 2018-05-24 11:21:11 -0700 | [diff] [blame] | 21 | long ksym_get_addr(const char *name); |
Hao Luo | 2c2f6ab | 2020-09-29 16:50:46 -0700 | [diff] [blame] | 22 | |
Rong Tao | c698eae | 2023-09-07 09:59:13 +0800 | [diff] [blame] | 23 | struct ksyms *load_kallsyms_local(void); |
| 24 | struct ksym *ksym_search_local(struct ksyms *ksyms, long key); |
| 25 | long ksym_get_addr_local(struct ksyms *ksyms, const char *name); |
| 26 | void free_kallsyms_local(struct ksyms *ksyms); |
| 27 | |
Yonghong Song | d1f0258 | 2024-03-25 21:15:13 -0700 | [diff] [blame] | 28 | struct ksyms *load_kallsyms_custom_local(ksym_cmp_t cmp_cb); |
| 29 | struct ksym *search_kallsyms_custom_local(struct ksyms *ksyms, const void *p1, |
| 30 | ksym_search_cmp_t cmp_cb); |
| 31 | |
Hao Luo | 2c2f6ab | 2020-09-29 16:50:46 -0700 | [diff] [blame] | 32 | /* open kallsyms and find addresses on the fly, faster than load + search. */ |
| 33 | int kallsyms_find(const char *sym, unsigned long long *addr); |
| 34 | |
Daniel T. Lee | 24a6034 | 2020-03-21 19:04:23 +0900 | [diff] [blame] | 35 | void read_trace_pipe(void); |
Jiri Olsa | 4d4992f | 2024-04-10 16:09:52 +0200 | [diff] [blame] | 36 | int read_trace_pipe_iter(void (*cb)(const char *str, void *data), |
| 37 | void *data, int iter); |
Yonghong Song | 28dbf86 | 2018-04-28 22:28:13 -0700 | [diff] [blame] | 38 | |
Andrii Nakryiko | ff94368 | 2022-01-26 11:30:58 -0800 | [diff] [blame] | 39 | ssize_t get_uprobe_offset(const void *addr); |
Andrii Nakryiko | 4bd11e0 | 2021-08-15 00:06:09 -0700 | [diff] [blame] | 40 | ssize_t get_rel_offset(uintptr_t addr); |
Andrii Nakryiko | a549aaa | 2021-08-15 00:06:06 -0700 | [diff] [blame] | 41 | |
Jiri Olsa | 88dc8b3 | 2023-03-31 11:31:56 +0200 | [diff] [blame] | 42 | int read_build_id(const char *path, char *build_id, size_t size); |
| 43 | |
Yonghong Song | 28dbf86 | 2018-04-28 22:28:13 -0700 | [diff] [blame] | 44 | #endif |