LXR linux/tools/testing/selftests/bpf/progs/loop2.c

   1// SPDX-License-Identifier: GPL-2.0
   2// Copyright (c) 2019 Facebook
   3#include <linux/sched.h>
   4#include <linux/ptrace.h>
   5#include <stdint.h>
   6#include <stddef.h>
   7#include <stdbool.h>
   8#include <linux/bpf.h>
   9#include <bpf/bpf_helpers.h>
  10#include <bpf/bpf_tracing.h>
  11
  12char _license[] SEC("license") = "GPL";
  13
  14SEC("raw_tracepoint/consume_skb")
  15int while_true(volatile struct pt_regs* ctx)
  16{
  17        int i = 0;
  18
  19        while (true) {
  20                if (PT_REGS_RC(ctx) & 1)
  21                        i += 3;
  22                else
  23                        i += 7;
  24                if (i > 40)
  25                        break;
  26        }
  27
  28        return i;
  29}
  30