tools/testing/selftests/sched_ext/dsp_local_on.c

   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 <scx/common.h>
   8 #include <unistd.h>
   9 #include "dsp_local_on.bpf.skel.h"
  10 #include "scx_test.h"
  11
  12 static enum scx_test_status setup(void **ctx)
  13 {
  14         struct dsp_local_on *skel;
  15
  16         skel = dsp_local_on__open();
  17         SCX_FAIL_IF(!skel, "Failed to open");
  18
  19         skel->rodata->nr_cpus = libbpf_num_possible_cpus();
  20         SCX_FAIL_IF(dsp_local_on__load(skel), "Failed to load skel");
  21         *ctx = skel;
  22
  23         return SCX_TEST_PASS;
  24 }
  25
  26 static enum scx_test_status run(void *ctx)
  27 {
  28         struct dsp_local_on *skel = ctx;
  29         struct bpf_link *link;
  30
  31         link = bpf_map__attach_struct_ops(skel->maps.dsp_local_on_ops);
  32         SCX_FAIL_IF(!link, "Failed to attach struct_ops");
  33
  34         /* Just sleeping is fine, plenty of scheduling events happening */
  35         sleep(1);
  36
  37         SCX_EQ(skel->data->uei.kind, EXIT_KIND(SCX_EXIT_ERROR));
  38         bpf_link__destroy(link);
  39
  40         return SCX_TEST_PASS;
  41 }
  42
  43 static void cleanup(void *ctx)
  44 {
  45         struct dsp_local_on *skel = ctx;
  46
  47         dsp_local_on__destroy(skel);
  48 }
  49
  50 struct scx_test dsp_local_on = {
  51         .name = "dsp_local_on",
  52         .description = "Verify we can directly dispatch tasks to a local DSQs "
  53                        "from osp.dispatch()",
  54         .setup = setup,
  55         .run = run,
  56         .cleanup = cleanup,
  57 };
  58 REGISTER_SCX_TEST(&dsp_local_on)