/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (c) 2024 Meta Platforms, Inc. and affiliates. * Copyright (c) 2024 David Vernet <dvernet@meta.com> * Copyright (c) 2024 Tejun Heo <tj@kernel.org> */ #include <bpf/bpf.h> #include <scx/common.h> #include <unistd.h> #include "ddsp_vtimelocal_fail.bpf.skel.h" #include "scx_test.h" static enum scx_test_status setup(void **ctx) { struct ddsp_vtimelocal_fail *skel; skel = ddsp_vtimelocal_fail__open(); SCX_FAIL_IF(!skel, "Failed to open"); SCX_ENUM_INIT(skel); SCX_FAIL_IF(ddsp_vtimelocal_fail__load(skel), "Failed to load skel"); *ctx = skel; return SCX_TEST_PASS; } static enum scx_test_status run(void *ctx) { struct ddsp_vtimelocal_fail *skel = ctx; struct bpf_link *link; link = bpf_map__attach_struct_ops(skel->maps.ddsp_vtimelocal_fail_ops); SCX_FAIL_IF(!link, "Failed to attach struct_ops"); sleep(1); SCX_EQ(skel->data->uei.kind, EXIT_KIND(SCX_EXIT_ERROR)); bpf_link__destroy(link); return SCX_TEST_PASS; } static void cleanup(void *ctx) { struct ddsp_vtimelocal_fail *skel = ctx; ddsp_vtimelocal_fail__destroy(skel); } struct scx_test ddsp_vtimelocal_fail = { .name = "ddsp_vtimelocal_fail", .description = "Verify we gracefully fail, and fall back to using a " "built-in DSQ, if we do a direct vtime dispatch to a " "built-in DSQ from DSQ in ops.select_cpu()", .setup = setup, .run = run, .cleanup = cleanup, }; REGISTER_SCX_TEST(&ddsp_vtimelocal_fail)