| /* 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 |
