tjh.dev
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) 2024 Meta Platforms, Inc. and affiliates.
4 * Copyright (c) 2024 David Vernet <dvernet@meta.com>
5 */
6#include <bpf/bpf.h>
7#include <scx/common.h>
8#include <unistd.h>
9#include "dsp_local_on.bpf.skel.h"
10#include "scx_test.h"
11
12static enum scx_test_status setup(void **ctx)
13{
14 struct dsp_local_on *skel;
15
16 skel = dsp_local_on__open();
17 SCX_FAIL_IF(!skel, "Failed to open");
18 SCX_ENUM_INIT(skel);
19
20 skel->rodata->nr_cpus = libbpf_num_possible_cpus();
21 SCX_FAIL_IF(dsp_local_on__load(skel), "Failed to load skel");
22 *ctx = skel;
23
24 return SCX_TEST_PASS;
25}
26
27static enum scx_test_status run(void *ctx)
28{
29 struct dsp_local_on *skel = ctx;
30 struct bpf_link *link;
31
32 link = bpf_map__attach_struct_ops(skel->maps.dsp_local_on_ops);
33 SCX_FAIL_IF(!link, "Failed to attach struct_ops");
34
35 /* Just sleeping is fine, plenty of scheduling events happening */
36 sleep(1);
37
38 bpf_link__destroy(link);
39
40 SCX_EQ(skel->data->uei.kind, EXIT_KIND(SCX_EXIT_UNREG));
41
42 return SCX_TEST_PASS;
43}
44
45static void cleanup(void *ctx)
46{
47 struct dsp_local_on *skel = ctx;
48
49 dsp_local_on__destroy(skel);
50}
51
52struct scx_test dsp_local_on = {
53 .name = "dsp_local_on",
54 .description = "Verify we can directly dispatch tasks to a local DSQs "
55 "from ops.dispatch()",
56 .setup = setup,
57 .run = run,
58 .cleanup = cleanup,
59};
60REGISTER_SCX_TEST(&dsp_local_on)