1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __TRACE_HELPER_H 3 #define __TRACE_HELPER_H 4 5 #include <libbpf.h> 6 7 struct ksym { 8 long addr; 9 char *name; 10 }; 11 12 int load_kallsyms(void); 13 struct ksym *ksym_search(long key); 14 15 typedef enum bpf_perf_event_ret (*perf_event_print_fn)(void *data, int size); 16 17 int perf_event_mmap(int fd); 18 /* return LIBBPF_PERF_EVENT_DONE or LIBBPF_PERF_EVENT_ERROR */ 19 int perf_event_poller(int fd, perf_event_print_fn output_fn); 20 #endif 21