maybe_null_fail_yld.bpf.c

 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
15bool BPF_STRUCT_OPS(maybe_null_fail_yield, struct task_struct *from,
16		    struct task_struct *to)
17{
18	bpf_printk("Yielding to %s[%d]", to->comm, to->pid);
19
20	return false;
21}
22
23SEC(".struct_ops.link")
24struct sched_ext_ops maybe_null_fail = {
25	.yield			= (void *) maybe_null_fail_yield,
26	.enable			= (void *) maybe_null_running,
27	.name			= "maybe_null_fail_yield",
28};