1#include "vmlinux.h"
2#include <linux/version.h>
3#include <bpf/bpf_helpers.h>
4
5struct {
6	__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
7	__uint(key_size, sizeof(int));
8	__uint(value_size, sizeof(u32));
9	__uint(max_entries, 2);
10} my_map SEC(".maps");
11
12SEC("ksyscall/write")
13int bpf_prog1(struct pt_regs *ctx)
14{
15	struct S {
16		u64 pid;
17		u64 cookie;
18	} data;
19
20	data.pid = bpf_get_current_pid_tgid();
21	data.cookie = 0x12345678;
22
23	bpf_perf_event_output(ctx, &my_map, 0, &data, sizeof(data));
24
25	return 0;
26}
27
28char _license[] SEC("license") = "GPL";
29u32 _version SEC("version") = LINUX_VERSION_CODE;
30