tools/testing/selftests/bpf/trace_helpers.h

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