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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>
*/
#include <bpf/bpf.h>
#include <sched.h>
#include <scx/common.h>
#include <sys/wait.h>
#include <unistd.h>
#include "exit.bpf.skel.h"
#include "scx_test.h"
#include "exit_test.h"
static enum scx_test_status run(void *ctx)
{
enum exit_test_case tc;
for (tc = 0; tc < NUM_EXITS; tc++) {
struct exit *skel;
struct bpf_link *link;
char buf[16];
skel = exit__open();
skel->rodata->exit_point = tc;
exit__load(skel);
link = bpf_map__attach_struct_ops(skel->maps.exit_ops);
if (!link) {
SCX_ERR("Failed to attach scheduler");
exit__destroy(skel);
return SCX_TEST_FAIL;
}
/* Assumes uei.kind is written last */
while (skel->data->uei.kind == EXIT_KIND(SCX_EXIT_NONE))
sched_yield();
SCX_EQ(skel->data->uei.kind, EXIT_KIND(SCX_EXIT_UNREG_BPF));
SCX_EQ(skel->data->uei.exit_code, tc);
sprintf(buf, "%d", tc);
SCX_ASSERT(!strcmp(skel->data->uei.msg, buf));
bpf_link__destroy(link);
exit__destroy(skel);
}
return SCX_TEST_PASS;
}
struct scx_test exit_test = {
.name = "exit",
.description = "Verify we can cleanly exit a scheduler in multiple places",
.run = run,
};
REGISTER_SCX_TEST(&exit_test)
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