dsp_local_on.c

 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)