tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2// Copyright (c) 2018 Facebook
3
4#include <linux/bpf.h>
5#include <bpf/bpf_helpers.h>
6
7__u64 cg_id;
8__u64 expected_pid;
9
10SEC("tracepoint/syscalls/sys_enter_nanosleep")
11int trace(void *ctx)
12{
13 __u32 pid = bpf_get_current_pid_tgid();
14
15 if (expected_pid == pid)
16 cg_id = bpf_get_current_cgroup_id();
17
18 return 0;
19}
20
21char _license[] SEC("license") = "GPL";