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1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright (c) 2024 Meta Platforms, Inc. and affiliates.
4 */
5
6 #include <scx/common.bpf.h>
7
8 char _license[] SEC("license") = "GPL";
9
10 u64 vtime_test;
11
12 void BPF_STRUCT_OPS(maybe_null_running, struct task_struct *p)
13 {}
14
15 void BPF_STRUCT_OPS(maybe_null_fail_dispatch, s32 cpu, struct task_struct *p)
16 {
17 vtime_test = p->scx.dsq_vtime;
18 }
19
20 SEC(".struct_ops.link")
21 struct sched_ext_ops maybe_null_fail = {
22 .dispatch = maybe_null_fail_dispatch,
23 .enable = maybe_null_running,
24 .name = "maybe_null_fail_dispatch",
25 };