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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (c) 2023 Meta Platforms, Inc. and affiliates.
4 * Copyright (c) 2023 David Vernet <dvernet@meta.com>
5 * Copyright (c) 2023 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_dispatch_dbl_dsp.bpf.skel.h"
12#include "scx_test.h"
13
14static enum scx_test_status setup(void **ctx)
15{
16 struct select_cpu_dispatch_dbl_dsp *skel;
17
18 skel = select_cpu_dispatch_dbl_dsp__open();
19 SCX_FAIL_IF(!skel, "Failed to open");
20 SCX_ENUM_INIT(skel);
21 SCX_FAIL_IF(select_cpu_dispatch_dbl_dsp__load(skel), "Failed to load skel");
22
23 *ctx = skel;
24
25 return SCX_TEST_PASS;
26}
27
28static enum scx_test_status run(void *ctx)
29{
30 struct select_cpu_dispatch_dbl_dsp *skel = ctx;
31 struct bpf_link *link;
32
33 link = bpf_map__attach_struct_ops(skel->maps.select_cpu_dispatch_dbl_dsp_ops);
34 SCX_FAIL_IF(!link, "Failed to attach scheduler");
35
36 sleep(1);
37
38 SCX_EQ(skel->data->uei.kind, EXIT_KIND(SCX_EXIT_ERROR));
39 bpf_link__destroy(link);
40
41 return SCX_TEST_PASS;
42}
43
44static void cleanup(void *ctx)
45{
46 struct select_cpu_dispatch_dbl_dsp *skel = ctx;
47
48 select_cpu_dispatch_dbl_dsp__destroy(skel);
49}
50
51struct scx_test select_cpu_dispatch_dbl_dsp = {
52 .name = "select_cpu_dispatch_dbl_dsp",
53 .description = "Verify graceful failure if we dispatch twice to a "
54 "DSQ in ops.select_cpu()",
55 .setup = setup,
56 .run = run,
57 .cleanup = cleanup,
58};
59REGISTER_SCX_TEST(&select_cpu_dispatch_dbl_dsp)