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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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_bad_dsq.bpf.skel.h"
12#include "scx_test.h"
13
14static enum scx_test_status setup(void **ctx)
15{
16 struct select_cpu_dispatch_bad_dsq *skel;
17
18 skel = select_cpu_dispatch_bad_dsq__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_dispatch_bad_dsq *skel = ctx;
28 struct bpf_link *link;
29
30 link = bpf_map__attach_struct_ops(skel->maps.select_cpu_dispatch_bad_dsq_ops);
31 SCX_FAIL_IF(!link, "Failed to attach scheduler");
32
33 sleep(1);
34
35 SCX_EQ(skel->data->uei.kind, EXIT_KIND(SCX_EXIT_ERROR));
36 bpf_link__destroy(link);
37
38 return SCX_TEST_PASS;
39}
40
41static void cleanup(void *ctx)
42{
43 struct select_cpu_dispatch_bad_dsq *skel = ctx;
44
45 select_cpu_dispatch_bad_dsq__destroy(skel);
46}
47
48struct scx_test select_cpu_dispatch_bad_dsq = {
49 .name = "select_cpu_dispatch_bad_dsq",
50 .description = "Verify graceful failure if we direct-dispatch to a "
51 "bogus DSQ in ops.select_cpu()",
52 .setup = setup,
53 .run = run,
54 .cleanup = cleanup,
55};
56REGISTER_SCX_TEST(&select_cpu_dispatch_bad_dsq)