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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 <sys/wait.h>10#include <unistd.h>11#include "ddsp_bogus_dsq_fail.bpf.skel.h"12#include "scx_test.h"13 14static enum scx_test_status setup(void **ctx)15{16 struct ddsp_bogus_dsq_fail *skel;17 18 skel = ddsp_bogus_dsq_fail__open_and_load();19 SCX_FAIL_IF(!skel, "Failed to open and load skel");20 *ctx = skel;21 22 return SCX_TEST_PASS;23}24 25static enum scx_test_status run(void *ctx)26{27 struct ddsp_bogus_dsq_fail *skel = ctx;28 struct bpf_link *link;29 30 link = bpf_map__attach_struct_ops(skel->maps.ddsp_bogus_dsq_fail_ops);31 SCX_FAIL_IF(!link, "Failed to attach struct_ops");32 33 sleep(1);34 35 SCX_EQ(skel->data->uei.kind, EXIT_KIND(SCX_EXIT_ERROR));36 bpf_link__destroy(link);37 38 return SCX_TEST_PASS;39}40 41static void cleanup(void *ctx)42{43 struct ddsp_bogus_dsq_fail *skel = ctx;44 45 ddsp_bogus_dsq_fail__destroy(skel);46}47 48struct scx_test ddsp_bogus_dsq_fail = {49 .name = "ddsp_bogus_dsq_fail",50 .description = "Verify we gracefully fail, and fall back to using a "51 "built-in DSQ, if we do a direct dispatch to an invalid"52 " DSQ in ops.select_cpu()",53 .setup = setup,54 .run = run,55 .cleanup = cleanup,56};57REGISTER_SCX_TEST(&ddsp_bogus_dsq_fail)58