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