tools/testing/selftests/bpf/progs/test_raw_tp_test_run.c

   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")
  12 int 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";