1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2020 Facebook
3 
4 #include <linux/bpf.h>
5 #include <asm/unistd.h>
6 #include <bpf/bpf_helpers.h>
7 #include <bpf/bpf_tracing.h>
8 
9 char _license[] SEC("license") = "GPL";
10 
11 long hits = 0;
12 
13 SEC("tp/syscalls/sys_enter_getpgid")
14 int bench_trigger_tp(void *ctx)
15 {
16 	__sync_add_and_fetch(&hits, 1);
17 	return 0;
18 }
19 
20 SEC("raw_tp/sys_enter")
21 int BPF_PROG(bench_trigger_raw_tp, struct pt_regs *regs, long id)
22 {
23 	if (id == __NR_getpgid)
24 		__sync_add_and_fetch(&hits, 1);
25 	return 0;
26 }
27 
28 SEC("kprobe/__x64_sys_getpgid")
29 int bench_trigger_kprobe(void *ctx)
30 {
31 	__sync_add_and_fetch(&hits, 1);
32 	return 0;
33 }
34 
35 SEC("fentry/__x64_sys_getpgid")
36 int bench_trigger_fentry(void *ctx)
37 {
38 	__sync_add_and_fetch(&hits, 1);
39 	return 0;
40 }
41 
42 SEC("fmod_ret/__x64_sys_getpgid")
43 int bench_trigger_fmodret(void *ctx)
44 {
45 	__sync_add_and_fetch(&hits, 1);
46 	return -22;
47 }
48