blob: 03a672d76353a0eb9c98d671f57f93461bfe0e3c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2021 Facebook */
#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
char LICENSE[] SEC("license") = "GPL";
int pid = 0;
int fentry_cnt = 0;
int fexit_cnt = 0;
SEC("fentry/__x64_sys_nanosleep")
int BPF_PROG(nanosleep_fentry, const struct pt_regs *regs)
{
if ((int)bpf_get_current_pid_tgid() != pid)
return 0;
fentry_cnt++;
return 0;
}
SEC("fexit/__x64_sys_nanosleep")
int BPF_PROG(nanosleep_fexit, const struct pt_regs *regs, int ret)
{
if ((int)bpf_get_current_pid_tgid() != pid)
return 0;
fexit_cnt++;
return 0;
}
|
