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 12 char _license[] SEC("license") = "GPL"; 13 14 SEC("raw_tracepoint/consume_skb") 15 int while_true(struct pt_regs *ctx) 16 { 17 volatile __u64 i = 0, sum = 0; 18 do { 19 i++; 20 sum += PT_REGS_RC(ctx); 21 } while (i < 0x100000000ULL); 22 return sum; 23 } 24