tools/testing/selftests/sched_ext/maximal.c

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (c) 2024 Meta Platforms, Inc. and affiliates.
 * Copyright (c) 2024 David Vernet <dvernet@meta.com>
 */
#include <bpf/bpf.h>
#include <scx/common.h>
#include <sys/wait.h>
#include <unistd.h>
#include "maximal.bpf.skel.h"
#include "scx_test.h"

static enum scx_test_status setup(void **ctx)
{
	struct maximal *skel;

	skel = maximal__open();
	SCX_FAIL_IF(!skel, "Failed to open");
	SCX_ENUM_INIT(skel);
	SCX_FAIL_IF(maximal__load(skel), "Failed to load skel");

	bpf_map__set_autoattach(skel->maps.maximal_ops, false);
	SCX_FAIL_IF(maximal__attach(skel), "Failed to attach skel");

	*ctx = skel;

	return SCX_TEST_PASS;
}

static enum scx_test_status run(void *ctx)
{
	struct maximal *skel = ctx;
	struct bpf_link *link;

	link = bpf_map__attach_struct_ops(skel->maps.maximal_ops);
	SCX_FAIL_IF(!link, "Failed to attach scheduler");

	bpf_link__destroy(link);

	return SCX_TEST_PASS;
}

static void cleanup(void *ctx)
{
	struct maximal *skel = ctx;

	maximal__destroy(skel);
}

struct scx_test maximal = {
	.name = "maximal",
	.description = "Verify we can load a scheduler with every callback defined",
	.setup = setup,
	.run = run,
	.cleanup = cleanup,
};
REGISTER_SCX_TEST(&maximal)