1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2020 Facebook */ 3 4 #include "vmlinux.h" 5 #include <bpf/bpf_helpers.h> 6 #include <bpf/bpf_tracing.h> 7 8 __u32 count = 0; 9 __u32 on_cpu = 0xffffffff; 10 11 SEC("raw_tp/task_rename") BPF_PROG(rename,struct task_struct * task,char * comm)12int BPF_PROG(rename, struct task_struct *task, char *comm) 13 { 14 15 count++; 16 if ((__u64) task == 0x1234ULL && (__u64) comm == 0x5678ULL) { 17 on_cpu = bpf_get_smp_processor_id(); 18 return (long)task + (long)comm; 19 } 20 21 return 0; 22 } 23 24 char _license[] SEC("license") = "GPL"; 25