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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 * Copyright (c) 2024 Tejun Heo <tj@kernel.org>6 */7#include <bpf/bpf.h>8#include <scx/common.h>9#include <unistd.h>10#include "ddsp_vtimelocal_fail.bpf.skel.h"11#include "scx_test.h"12 13static enum scx_test_status setup(void **ctx)14{15 struct ddsp_vtimelocal_fail *skel;16 17 skel = ddsp_vtimelocal_fail__open_and_load();18 SCX_FAIL_IF(!skel, "Failed to open and load skel");19 *ctx = skel;20 21 return SCX_TEST_PASS;22}23 24static enum scx_test_status run(void *ctx)25{26 struct ddsp_vtimelocal_fail *skel = ctx;27 struct bpf_link *link;28 29 link = bpf_map__attach_struct_ops(skel->maps.ddsp_vtimelocal_fail_ops);30 SCX_FAIL_IF(!link, "Failed to attach struct_ops");31 32 sleep(1);33 34 SCX_EQ(skel->data->uei.kind, EXIT_KIND(SCX_EXIT_ERROR));35 bpf_link__destroy(link);36 37 return SCX_TEST_PASS;38}39 40static void cleanup(void *ctx)41{42 struct ddsp_vtimelocal_fail *skel = ctx;43 44 ddsp_vtimelocal_fail__destroy(skel);45}46 47struct scx_test ddsp_vtimelocal_fail = {48 .name = "ddsp_vtimelocal_fail",49 .description = "Verify we gracefully fail, and fall back to using a "50 "built-in DSQ, if we do a direct vtime dispatch to a "51 "built-in DSQ from DSQ in ops.select_cpu()",52 .setup = setup,53 .run = run,54 .cleanup = cleanup,55};56REGISTER_SCX_TEST(&ddsp_vtimelocal_fail)57