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