1// SPDX-License-Identifier: GPL-2.0
2#include <linux/version.h>
3#include <linux/ptrace.h>
4#include <uapi/linux/bpf.h>
5#include <bpf/bpf_helpers.h>
6
7SEC("kprobe/blk_mq_start_request")
8int bpf_prog1(struct pt_regs *ctx)
9{
10 return 0;
11}
12
13SEC("kretprobe/__blk_account_io_done")
14int bpf_prog2(struct pt_regs *ctx)
15{
16 return 0;
17}
18char _license[] SEC("license") = "GPL";
19u32 _version SEC("version") = LINUX_VERSION_CODE;
20

source code of linux/samples/bpf/task_fd_query_kern.c