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")
bench_trigger_tp(void * ctx)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")
BPF_PROG(bench_trigger_raw_tp,struct pt_regs * regs,long id)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")
bench_trigger_kprobe(void * ctx)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")
bench_trigger_fentry(void * ctx)36 int bench_trigger_fentry(void *ctx)
37 {
38 __sync_add_and_fetch(&hits, 1);
39 return 0;
40 }
41
42 SEC("fentry.s/__x64_sys_getpgid")
bench_trigger_fentry_sleep(void * ctx)43 int bench_trigger_fentry_sleep(void *ctx)
44 {
45 __sync_add_and_fetch(&hits, 1);
46 return 0;
47 }
48
49 SEC("fmod_ret/__x64_sys_getpgid")
bench_trigger_fmodret(void * ctx)50 int bench_trigger_fmodret(void *ctx)
51 {
52 __sync_add_and_fetch(&hits, 1);
53 return -22;
54 }
55