blob: 50e66772c0467c67e18a91cddcb3f4b9745857ce (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Facebook
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
char _license[] SEC("license") = "GPL";
SEC("raw_tracepoint/kfree_skb")
int nested_loops(volatile struct pt_regs* ctx)
{
int i, j, sum = 0, m;
for (j = 0; j < 300; j++)
for (i = 0; i < j; i++) {
if (j & 1)
m = PT_REGS_RC(ctx);
else
m = j;
sum += i * m;
}
return sum;
}
|
