numa.c

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Copyright (c) 2025 Andrea Righi <arighi@nvidia.com>
 4 */
 5#include <bpf/bpf.h>
 6#include <scx/common.h>
 7#include <sys/wait.h>
 8#include <unistd.h>
 9#include "numa.bpf.skel.h"
10#include "scx_test.h"
11
12static enum scx_test_status setup(void **ctx)
13{
14	struct numa *skel;
15
16	skel = numa__open();
17	SCX_FAIL_IF(!skel, "Failed to open");
18	SCX_ENUM_INIT(skel);
19	skel->rodata->__COMPAT_SCX_PICK_IDLE_IN_NODE = SCX_PICK_IDLE_IN_NODE;
20	skel->struct_ops.numa_ops->flags = SCX_OPS_BUILTIN_IDLE_PER_NODE;
21	SCX_FAIL_IF(numa__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 numa *skel = ctx;
31	struct bpf_link *link;
32
33	link = bpf_map__attach_struct_ops(skel->maps.numa_ops);
34	SCX_FAIL_IF(!link, "Failed to attach scheduler");
35
36	/* Just sleeping is fine, plenty of scheduling events happening */
37	sleep(1);
38
39	SCX_EQ(skel->data->uei.kind, EXIT_KIND(SCX_EXIT_NONE));
40	bpf_link__destroy(link);
41
42	return SCX_TEST_PASS;
43}
44
45static void cleanup(void *ctx)
46{
47	struct numa *skel = ctx;
48
49	numa__destroy(skel);
50}
51
52struct scx_test numa = {
53	.name = "numa",
54	.description = "Verify NUMA-aware functionalities",
55	.setup = setup,
56	.run = run,
57	.cleanup = cleanup,
58};
59REGISTER_SCX_TEST(&numa)