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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Copyright (c) 2023 Meta Platforms, Inc. and affiliates.4 * Copyright (c) 2023 David Vernet <dvernet@meta.com>5 * Copyright (c) 2023 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 "select_cpu_dispatch_dbl_dsp.bpf.skel.h"12#include "scx_test.h"13 14static enum scx_test_status setup(void **ctx)15{16 struct select_cpu_dispatch_dbl_dsp *skel;17 18 skel = select_cpu_dispatch_dbl_dsp__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 select_cpu_dispatch_dbl_dsp *skel = ctx;28 struct bpf_link *link;29 30 link = bpf_map__attach_struct_ops(skel->maps.select_cpu_dispatch_dbl_dsp_ops);31 SCX_FAIL_IF(!link, "Failed to attach scheduler");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 select_cpu_dispatch_dbl_dsp *skel = ctx;44 45 select_cpu_dispatch_dbl_dsp__destroy(skel);46}47 48struct scx_test select_cpu_dispatch_dbl_dsp = {49 .name = "select_cpu_dispatch_dbl_dsp",50 .description = "Verify graceful failure if we dispatch twice to a "51 "DSQ in ops.select_cpu()",52 .setup = setup,53 .run = run,54 .cleanup = cleanup,55};56REGISTER_SCX_TEST(&select_cpu_dispatch_dbl_dsp)57