1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 // Copyright (c) 2023 Red Hat
3 #include "vmlinux.h"
4 #include <bpf/bpf_tracing.h>
5
6 unsigned int nr_uprobes;
7 unsigned int nr_uretprobes;
8
9 SEC("uprobe")
10 int BPF_UPROBE(empty)
11 {
12 return 0;
13 }
14
15 SEC("uprobe")
16 int BPF_UPROBE(trace_printk)
17 {
18 char fmt[] = "perf bench uprobe %u";
19
20 bpf_trace_printk(fmt, sizeof(fmt), ++nr_uprobes);
21 return 0;
22 }
23
24 SEC("uretprobe")
25 int BPF_URETPROBE(empty_ret)
26 {
27 return 0;
28 }
29
30 SEC("uretprobe")
31 int BPF_URETPROBE(trace_printk_ret)
32 {
33 char fmt[] = "perf bench uretprobe %u";
34
35 bpf_trace_printk(fmt, sizeof(fmt), ++nr_uretprobes);
36 return 0;
37 }
38
39 char LICENSE[] SEC("license") = "Dual BSD/GPL";
40
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