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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 */6#include <bpf/bpf.h>7#include <sched.h>8#include <scx/common.h>9#include <sys/wait.h>10#include <unistd.h>11#include "exit.bpf.skel.h"12#include "scx_test.h"13 14#include "exit_test.h"15 16static enum scx_test_status run(void *ctx)17{18 enum exit_test_case tc;19 20 for (tc = 0; tc < NUM_EXITS; tc++) {21 struct exit *skel;22 struct bpf_link *link;23 char buf[16];24 25 skel = exit__open();26 skel->rodata->exit_point = tc;27 exit__load(skel);28 link = bpf_map__attach_struct_ops(skel->maps.exit_ops);29 if (!link) {30 SCX_ERR("Failed to attach scheduler");31 exit__destroy(skel);32 return SCX_TEST_FAIL;33 }34 35 /* Assumes uei.kind is written last */36 while (skel->data->uei.kind == EXIT_KIND(SCX_EXIT_NONE))37 sched_yield();38 39 SCX_EQ(skel->data->uei.kind, EXIT_KIND(SCX_EXIT_UNREG_BPF));40 SCX_EQ(skel->data->uei.exit_code, tc);41 sprintf(buf, "%d", tc);42 SCX_ASSERT(!strcmp(skel->data->uei.msg, buf));43 bpf_link__destroy(link);44 exit__destroy(skel);45 }46 47 return SCX_TEST_PASS;48}49 50struct scx_test exit_test = {51 .name = "exit",52 .description = "Verify we can cleanly exit a scheduler in multiple places",53 .run = run,54};55REGISTER_SCX_TEST(&exit_test)56