bench_uprobe.bpf.c

 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
 6unsigned int nr_uprobes;
 7unsigned int nr_uretprobes;
 8
 9SEC("uprobe")
10int BPF_UPROBE(empty)
11{
12       return 0;
13}
14
15SEC("uprobe")
16int 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
24SEC("uretprobe")
25int BPF_URETPROBE(empty_ret)
26{
27	return 0;
28}
29
30SEC("uretprobe")
31int 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
39char LICENSE[] SEC("license") = "Dual BSD/GPL";