Function numa_ofw_init

components/drivers/core/numa.c:99–169

#ifdef RT_USING_OFW
static int numa_ofw_init(void)
{
    int i = 0;
    rt_uint32_t nid;
    const char *numa_conf;
    struct rt_ofw_node *np = RT_NULL;

    numa_conf = rt_ofw_bootargs_select("numa=", 0);

    if (!numa_conf || rt_strcmp(numa_conf, "on"))
    {
        return (int)RT_EOK;
    }

    numa_enabled = RT_TRUE;

    for (int i = 0; i < RT_ARRAY_SIZE(cpu_numa_map); ++i)
    {
        cpu_numa_map[i] = -RT_ENOSYS;
    }

    rt_list_init(&numa_memory_nodes);

    rt_ofw_foreach_cpu_node(np)
    {
        rt_ofw_prop_read_u32(np, "numa-node-id", (rt_uint32_t *)&cpu_numa_map[i]);

        if (++i >= RT_CPUS_NR)
        {
            break;
        }
    }

    rt_ofw_foreach_node_by_type(np, "memory")
    {
        if (!rt_ofw_prop_read_u32(np, "numa-node-id", &nid))
        {
            int mem_nr = rt_ofw_get_address_count(np);

            for (i = 0; i < mem_nr; ++i)
            {
                rt_uint64_t addr, size;
                struct numa_memory *nm;

                if (rt_ofw_get_address(np, i, &addr, &size))
                {
                    continue;
                }

                nm = rt_malloc(sizeof(*nm));

                if (!nm)
                {
                    LOG_E("No memory to record NUMA[%d] memory[%p, %p] info",
                            nid, addr, addr + size);

                    return (int)-RT_ENOMEM;
                }