Quelle  numa.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2025 Andrea Righi <arighi@nvidia.com>
 */
#include <bpf/bpf.h>
#include <scx/common.h>
#include <sys/wait.h>
#include <unistd.h>
#include "numa.bpf.skel.h"
#include "scx_test.h"

static enum scx_test_status setup(void **ctx)
{
 struct numa *skel;

 skel = numa__open();
 SCX_FAIL_IF(!skel, "Failed to open");
 SCX_ENUM_INIT(skel);
 skel->rodata->__COMPAT_SCX_PICK_IDLE_IN_NODE = SCX_PICK_IDLE_IN_NODE;
 skel->struct_ops.numa_ops->flags = SCX_OPS_BUILTIN_IDLE_PER_NODE;
 SCX_FAIL_IF(numa__load(skel), "Failed to load skel");

 *ctx = skel;

 return SCX_TEST_PASS;
}

static enum scx_test_status run(void *ctx)
{
 struct numa *skel = ctx;
 struct bpf_link *link;

 link = bpf_map__attach_struct_ops(skel->maps.numa_ops);
 SCX_FAIL_IF(!link, "Failed to attach scheduler");

 /* Just sleeping is fine, plenty of scheduling events happening */
 sleep(1);

 SCX_EQ(skel->data->uei.kind, EXIT_KIND(SCX_EXIT_NONE));
 bpf_link__destroy(link);

 return SCX_TEST_PASS;
}

static void cleanup(void *ctx)
{
 struct numa *skel = ctx;

 numa__destroy(skel);
}

struct scx_test numa = {
 .name = "numa",
 .description = "Verify NUMA-aware functionalities",
 .setup = setup,
 .run = run,
 .cleanup = cleanup,
};
REGISTER_SCX_TEST(&numa)