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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 8char _license[] SEC("license") = "GPL";9 10u64 vtime_test;11 12void BPF_STRUCT_OPS(maybe_null_running, struct task_struct *p)13{}14 15void BPF_STRUCT_OPS(maybe_null_success_dispatch, s32 cpu, struct task_struct *p)16{17 if (p != NULL)18 vtime_test = p->scx.dsq_vtime;19}20 21bool BPF_STRUCT_OPS(maybe_null_success_yield, struct task_struct *from,22 struct task_struct *to)23{24 if (to)25 bpf_printk("Yielding to %s[%d]", to->comm, to->pid);26 27 return false;28}29 30SEC(".struct_ops.link")31struct sched_ext_ops maybe_null_success = {32 .dispatch = (void *) maybe_null_success_dispatch,33 .yield = (void *) maybe_null_success_yield,34 .enable = (void *) maybe_null_running,35 .name = "minimal",36};37