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Yonghong Song28dbf862018-04-28 22:28:13 -07001/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __TRACE_HELPER_H
3#define __TRACE_HELPER_H
4
Toke Høiland-Jørgensen3e689142020-01-20 14:06:45 +01005#include <bpf/libbpf.h>
Jakub Kicinskid0cabbb2018-05-10 10:24:40 -07006
Jiri Olsa88dc8b32023-03-31 11:31:56 +02007#define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask))
8#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a)-1)
9
Yonghong Song28dbf862018-04-28 22:28:13 -070010struct ksym {
11 long addr;
12 char *name;
13};
Rong Taoc698eae2023-09-07 09:59:13 +080014struct ksyms;
Yonghong Song28dbf862018-04-28 22:28:13 -070015
Yonghong Song9475dac2024-03-25 21:15:08 -070016typedef int (*ksym_cmp_t)(const void *p1, const void *p2);
Yonghong Songd1f02582024-03-25 21:15:13 -070017typedef int (*ksym_search_cmp_t)(const void *p1, const struct ksym *p2);
Yonghong Song9475dac2024-03-25 21:15:08 -070018
Yonghong Song28dbf862018-04-28 22:28:13 -070019int load_kallsyms(void);
20struct ksym *ksym_search(long key);
Yonghong Song73bc4d92018-05-24 11:21:11 -070021long ksym_get_addr(const char *name);
Hao Luo2c2f6ab2020-09-29 16:50:46 -070022
Rong Taoc698eae2023-09-07 09:59:13 +080023struct ksyms *load_kallsyms_local(void);
24struct ksym *ksym_search_local(struct ksyms *ksyms, long key);
25long ksym_get_addr_local(struct ksyms *ksyms, const char *name);
26void free_kallsyms_local(struct ksyms *ksyms);
27
Yonghong Songd1f02582024-03-25 21:15:13 -070028struct ksyms *load_kallsyms_custom_local(ksym_cmp_t cmp_cb);
29struct ksym *search_kallsyms_custom_local(struct ksyms *ksyms, const void *p1,
30 ksym_search_cmp_t cmp_cb);
31
Hao Luo2c2f6ab2020-09-29 16:50:46 -070032/* open kallsyms and find addresses on the fly, faster than load + search. */
33int kallsyms_find(const char *sym, unsigned long long *addr);
34
Daniel T. Lee24a60342020-03-21 19:04:23 +090035void read_trace_pipe(void);
Jiri Olsa4d4992f2024-04-10 16:09:52 +020036int read_trace_pipe_iter(void (*cb)(const char *str, void *data),
37 void *data, int iter);
Yonghong Song28dbf862018-04-28 22:28:13 -070038
Andrii Nakryikoff943682022-01-26 11:30:58 -080039ssize_t get_uprobe_offset(const void *addr);
Andrii Nakryiko4bd11e02021-08-15 00:06:09 -070040ssize_t get_rel_offset(uintptr_t addr);
Andrii Nakryikoa549aaa2021-08-15 00:06:06 -070041
Jiri Olsa88dc8b32023-03-31 11:31:56 +020042int read_build_id(const char *path, char *build_id, size_t size);
43
Yonghong Song28dbf862018-04-28 22:28:13 -070044#endif