aya/test/integration-test/bpf/ring_buf_sched_tracepoint.bpf.c

#include <bpf/bpf_helpers.h>
#include <vmlinux.h>

char _license[] SEC("license") = "GPL";

struct {
  __uint(type, BPF_MAP_TYPE_RINGBUF);
  __uint(max_entries, 256 * 1024 /* 256 KB */);
} rb SEC(".maps");

// This probe writes a zero to rb every time the sched_switch tracepoint is hit.
SEC("tracepoint/sched/sched_switch")
int sched_switch(struct switch_args *ctx) {
  unsigned long long e = 0;
  bpf_ringbuf_output(&rb, &e, sizeof(e), 0);
  return 0;
}