Cregit: Linux 6.9: trace

Contributors: 9
Author	Tokens	Token Proportion	Commits	Commit Proportion
Alexei Starovoitov	43	25.60%	4	26.67%
Jiri Olsa	34	20.24%	1	6.67%
Rong Tao	28	16.67%	1	6.67%
Yonghong Song	27	16.07%	2	13.33%
Andrii Nakryiko	22	13.10%	3	20.00%
Hao Luo	10	5.95%	1	6.67%
Jakub Kiciński	2	1.19%	1	6.67%
Toke Höiland-Jörgensen	1	0.60%	1	6.67%
Greg Kroah-Hartman	1	0.60%	1	6.67%
Total	168		15

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __TRACE_HELPER_H
#define __TRACE_HELPER_H

#include <bpf/libbpf.h>

#define __ALIGN_MASK(x, mask)	(((x)+(mask))&~(mask))
#define ALIGN(x, a)		__ALIGN_MASK(x, (typeof(x))(a)-1)

struct ksym {
	long addr;
	char *name;
};
struct ksyms;

int load_kallsyms(void);
struct ksym *ksym_search(long key);
long ksym_get_addr(const char *name);

struct ksyms *load_kallsyms_local(void);
struct ksym *ksym_search_local(struct ksyms *ksyms, long key);
long ksym_get_addr_local(struct ksyms *ksyms, const char *name);
void free_kallsyms_local(struct ksyms *ksyms);

/* open kallsyms and find addresses on the fly, faster than load + search. */
int kallsyms_find(const char *sym, unsigned long long *addr);

void read_trace_pipe(void);

ssize_t get_uprobe_offset(const void *addr);
ssize_t get_rel_offset(uintptr_t addr);

int read_build_id(const char *path, char *build_id, size_t size);

#endif

trace_helpers.h