tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2/* Copyright (c) 2018 Facebook */
3#include <linux/bpf.h>
4#include <bpf/bpf_helpers.h>
5
6int _version SEC("version") = 1;
7
8struct ipv_counts {
9 unsigned int v4;
10 unsigned int v6;
11};
12
13struct bpf_map_def SEC("maps") btf_map = {
14 .type = BPF_MAP_TYPE_ARRAY,
15 .key_size = sizeof(int),
16 .value_size = sizeof(struct ipv_counts),
17 .max_entries = 4,
18};
19
20__attribute__((noinline))
21int test_long_fname_2(void)
22{
23 struct ipv_counts *counts;
24 int key = 0;
25
26 counts = bpf_map_lookup_elem(&btf_map, &key);
27 if (!counts)
28 return 0;
29
30 counts->v6++;
31
32 return 0;
33}
34
35__attribute__((noinline))
36int test_long_fname_1(void)
37{
38 return test_long_fname_2();
39}
40
41SEC("dummy_tracepoint")
42int _dummy_tracepoint(void *arg)
43{
44 return test_long_fname_1();
45}
46
47char _license[] SEC("license") = "GPL";