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30 lines
549 B
30 lines
549 B
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2019 Facebook
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#include <linux/sched.h>
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#include <linux/ptrace.h>
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include <linux/bpf.h>
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#include "bpf_helpers.h"
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#include "bpf_tracing.h"
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char _license[] SEC("license") = "GPL";
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SEC("raw_tracepoint/kfree_skb")
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int nested_loops(volatile struct pt_regs* ctx)
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{
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int i, j, sum = 0, m;
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for (j = 0; j < 300; j++)
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for (i = 0; i < j; i++) {
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if (j & 1)
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m = PT_REGS_RC(ctx);
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else
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m = j;
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sum += i * m;
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}
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return sum;
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}
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