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1// SPDX-License-Identifier: GPL-2.02// Copyright (c) 2019 Facebook3#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/kfree_skb")15int nested_loops(volatile struct pt_regs* ctx)16{17 int i, j, sum = 0, m;18 19 for (j = 0; j < 300; j++)20 for (i = 0; i < j; i++) {21 if (j & 1)22 m = PT_REGS_RC(ctx);23 else24 m = j;25 sum += i * m;26 }27 28 return sum;29}30