1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright (c) 2024 Meta Platforms, Inc. and affiliates.
 4 * Copyright (c) 2024 David Vernet <dvernet@meta.com>
 5 * Copyright (c) 2024 Tejun Heo <tj@kernel.org>
 6 */
 7#include <bpf/bpf.h>
 8#include <scx/common.h>
 9#include <sys/wait.h>
10#include <unistd.h>
11#include "select_cpu_vtime.bpf.skel.h"
12#include "scx_test.h"
13
14static enum scx_test_status setup(void **ctx)
15{
16	struct select_cpu_vtime *skel;
17
18	skel = select_cpu_vtime__open_and_load();
19	SCX_FAIL_IF(!skel, "Failed to open and load skel");
20	*ctx = skel;
21
22	return SCX_TEST_PASS;
23}
24
25static enum scx_test_status run(void *ctx)
26{
27	struct select_cpu_vtime *skel = ctx;
28	struct bpf_link *link;
29
30	SCX_ASSERT(!skel->bss->consumed);
31
32	link = bpf_map__attach_struct_ops(skel->maps.select_cpu_vtime_ops);
33	SCX_FAIL_IF(!link, "Failed to attach scheduler");
34
35	sleep(1);
36
37	SCX_ASSERT(skel->bss->consumed);
38
39	bpf_link__destroy(link);
40
41	return SCX_TEST_PASS;
42}
43
44static void cleanup(void *ctx)
45{
46	struct select_cpu_vtime *skel = ctx;
47
48	select_cpu_vtime__destroy(skel);
49}
50
51struct scx_test select_cpu_vtime = {
52	.name = "select_cpu_vtime",
53	.description = "Test doing direct vtime-dispatching from "
54		       "ops.select_cpu(), to a non-built-in DSQ",
55	.setup = setup,
56	.run = run,
57	.cleanup = cleanup,
58};
59REGISTER_SCX_TEST(&select_cpu_vtime)