#include "vmlinux.h" #include <linux/version.h> #include <bpf/bpf_helpers.h> struct { __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY); __uint(key_size, sizeof(int)); __uint(value_size, sizeof(u32)); __uint(max_entries, 2); } my_map SEC(".maps"); SEC("ksyscall/write") int bpf_prog1(struct pt_regs *ctx) { struct S { u64 pid; u64 cookie; } data; data.pid = bpf_get_current_pid_tgid(); data.cookie = 0x12345678; bpf_perf_event_output(ctx, &my_map, 0, &data, sizeof(data)); return 0; } char _license[] SEC("license") = "GPL"; u32 _version SEC("version") = LINUX_VERSION_CODE;