RE: [PATCH v3] driver core: platform: expose numa_node to users in sysfs

[Song Bao Hua (Barry Song)]

> 
> However, it is still much more clear and credible to users by exposing the data
> directly from ACPI table.
> 

Except ARM64 iort, numa_node is actually also applicable to x86 and other architectures through general
acpi_create_platform_device() API:

drivers/acpi/scan.c:
static void acpi_default_enumeration(struct acpi_device *device)
{
	...
	if (!device->flags.enumeration_by_parent) {
		acpi_create_platform_device(device, NULL);
		acpi_device_set_enumerated(device);
	}
}

struct platform_device *acpi_create_platform_device(struct acpi_device *adev,
					struct property_entry *properties)
{
	...

	pdev = platform_device_register_full(&pdevinfo);
	if (IS_ERR(pdev))
		dev_err(&adev->dev, "platform device creation failed: %ld\n",
			PTR_ERR(pdev));
	else {
		set_dev_node(&pdev->dev, acpi_get_node(adev->handle));
		dev_dbg(&adev->dev, "created platform device %s\n",
			dev_name(&pdev->dev));
	}

	...

	return pdev;
}

> >
> > Thanks,
> > John

Thanks
Barry