| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __TRACE_HELPER_H |
| #define __TRACE_HELPER_H |
| |
| #include <libbpf.h> |
| #include <linux/perf_event.h> |
| |
| struct ksym { |
| long addr; |
| char *name; |
| }; |
| |
| int load_kallsyms(void); |
| struct ksym *ksym_search(long key); |
| long ksym_get_addr(const char *name); |
| |
| typedef enum bpf_perf_event_ret (*perf_event_print_fn)(void *data, int size); |
| |
| int perf_event_mmap(int fd); |
| int perf_event_mmap_header(int fd, struct perf_event_mmap_page **header); |
| /* return LIBBPF_PERF_EVENT_DONE or LIBBPF_PERF_EVENT_ERROR */ |
| int perf_event_poller(int fd, perf_event_print_fn output_fn); |
| int perf_event_poller_multi(int *fds, struct perf_event_mmap_page **headers, |
| int num_fds, perf_event_print_fn output_fn); |
| #endif |
