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/* 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 <sys/wait.h>
#include <unistd.h>
#include "ddsp_bogus_dsq_fail.bpf.skel.h"
#include "scx_test.h"
static enum scx_test_status setup(void **ctx)
{
struct ddsp_bogus_dsq_fail *skel;
skel = ddsp_bogus_dsq_fail__open_and_load();
SCX_FAIL_IF(!skel, "Failed to open and load skel");
*ctx = skel;
return SCX_TEST_PASS;
}
static enum scx_test_status run(void *ctx)
{
struct ddsp_bogus_dsq_fail *skel = ctx;
struct bpf_link *link;
link = bpf_map__attach_struct_ops(skel->maps.ddsp_bogus_dsq_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_bogus_dsq_fail *skel = ctx;
ddsp_bogus_dsq_fail__destroy(skel);
}
struct scx_test ddsp_bogus_dsq_fail = {
.name = "ddsp_bogus_dsq_fail",
.description = "Verify we gracefully fail, and fall back to using a "
"built-in DSQ, if we do a direct dispatch to an invalid"
" DSQ in ops.select_cpu()",
.setup = setup,
.run = run,
.cleanup = cleanup,
};
REGISTER_SCX_TEST(&ddsp_bogus_dsq_fail)
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