/* SPDX-License-Identifier: GPL-2.0 *//* * A scheduler that validates the behavior of direct dispatching with a default * select_cpu implementation. * * Copyright (c) 2023 Meta Platforms, Inc. and affiliates. * Copyright (c) 2023 David Vernet <dvernet@meta.com> * Copyright (c) 2023 Tejun Heo <tj@kernel.org> */ #include <scx/common.bpf.h> char _license[] SEC("license") = "GPL"; s32 BPF_STRUCT_OPS(select_cpu_dispatch_select_cpu, struct task_struct *p,		   s32 prev_cpu, u64 wake_flags){	u64 dsq_id = SCX_DSQ_LOCAL;	s32 cpu = prev_cpu; 	if (scx_bpf_test_and_clear_cpu_idle(cpu))		goto dispatch; 	cpu = scx_bpf_pick_idle_cpu(p->cpus_ptr, 0);	if (cpu >= 0)		goto dispatch; 	dsq_id = SCX_DSQ_GLOBAL;	cpu = prev_cpu; dispatch:	scx_bpf_dsq_insert(p, dsq_id, SCX_SLICE_DFL, 0);	return cpu;} SEC(".struct_ops.link")struct sched_ext_ops select_cpu_dispatch_ops = {	.select_cpu		= (void *) select_cpu_dispatch_select_cpu,	.name			= "select_cpu_dispatch",	.timeout_ms		= 1000U,};