Quelle  cpumask.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */

#include <test_progs.h>
#include "cpumask_failure.skel.h"
#include "cpumask_success.skel.h"

static const char * const cpumask_success_testcases[] = {
 "test_alloc_free_cpumask",
 "test_set_clear_cpu",
 "test_setall_clear_cpu",
 "test_first_firstzero_cpu",
 "test_firstand_nocpu",
 "test_test_and_set_clear",
 "test_and_or_xor",
 "test_intersects_subset",
 "test_copy_any_anyand",
 "test_insert_leave",
 "test_insert_remove_release",
 "test_global_mask_rcu",
 "test_global_mask_array_one_rcu",
 "test_global_mask_array_rcu",
 "test_global_mask_array_l2_rcu",
 "test_global_mask_nested_rcu",
 "test_global_mask_nested_deep_rcu",
 "test_global_mask_nested_deep_array_rcu",
 "test_cpumask_weight",
 "test_refcount_null_tracking",
 "test_populate_reject_small_mask",
 "test_populate_reject_unaligned",
 "test_populate",
};

static void verify_success(const char *prog_name)
{
 struct cpumask_success *skel;
 struct bpf_program *prog;
 struct bpf_link *link = NULL;
 pid_t child_pid;
 int status, err;

 skel = cpumask_success__open();
 if (!ASSERT_OK_PTR(skel, "cpumask_success__open"))
  return;

 skel->bss->pid = getpid();
 skel->bss->nr_cpus = libbpf_num_possible_cpus();

 err = cpumask_success__load(skel);
 if (!ASSERT_OK(err, "cpumask_success__load"))
  goto cleanup;

 prog = bpf_object__find_program_by_name(skel->obj, prog_name);
 if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
  goto cleanup;

 link = bpf_program__attach(prog);
 if (!ASSERT_OK_PTR(link, "bpf_program__attach"))
  goto cleanup;

 child_pid = fork();
 if (!ASSERT_GT(child_pid, -1, "child_pid"))
  goto cleanup;
 if (child_pid == 0)
  _exit(0);
 waitpid(child_pid, &status, 0);
 ASSERT_OK(skel->bss->err, "post_wait_err");

cleanup:
 bpf_link__destroy(link);
 cpumask_success__destroy(skel);
}

void test_cpumask(void)
{
 int i;

 for (i = 0; i < ARRAY_SIZE(cpumask_success_testcases); i++) {
  if (!test__start_subtest(cpumask_success_testcases[i]))
   continue;

  verify_success(cpumask_success_testcases[i]);
 }

 RUN_TESTS(cpumask_failure);
}