Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#ifdef __x86_64__
8#define SYS_PREFIX "__x64_"
9#elif defined(__s390x__)
10#define SYS_PREFIX "__s390x_"
11#elif defined(__aarch64__)
12#define SYS_PREFIX "__arm64_"
13#elif defined(__riscv)
14#define SYS_PREFIX "__riscv_"
15#else
16#define SYS_PREFIX ""
17#endif
18
19#define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask))
20#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a)-1)
21
22struct ksym {
23 long addr;
24 char *name;
25};
26
27struct ksyms {
28 struct ksym *syms;
29 size_t sym_cap;
30 size_t sym_cnt;
31 char **filtered_syms;
32 size_t filtered_cnt;
33};
34
35typedef int (*ksym_cmp_t)(const void *p1, const void *p2);
36typedef int (*ksym_search_cmp_t)(const void *p1, const struct ksym *p2);
37
38int load_kallsyms(void);
39struct ksym *ksym_search(long key);
40long ksym_get_addr(const char *name);
41
42struct ksyms *load_kallsyms_local(void);
43struct ksym *ksym_search_local(struct ksyms *ksyms, long key);
44long ksym_get_addr_local(struct ksyms *ksyms, const char *name);
45void free_kallsyms_local(struct ksyms *ksyms);
46
47struct ksyms *load_kallsyms_custom_local(ksym_cmp_t cmp_cb);
48struct ksym *search_kallsyms_custom_local(struct ksyms *ksyms, const void *p1,
49 ksym_search_cmp_t cmp_cb);
50
51/* open kallsyms and find addresses on the fly, faster than load + search. */
52int kallsyms_find(const char *sym, unsigned long long *addr);
53
54void read_trace_pipe(void);
55int read_trace_pipe_iter(void (*cb)(const char *str, void *data),
56 void *data, int iter);
57
58ssize_t get_uprobe_offset(const void *addr);
59ssize_t get_rel_offset(uintptr_t addr);
60
61int read_build_id(const char *path, char *build_id, size_t size);
62
63int bpf_get_ksyms(struct ksyms **ksymsp, bool kernel);
64int bpf_get_addrs(unsigned long **addrsp, size_t *cntp, bool kernel);
65
66#endif