Hi Chen,
2012/09/28 12:21, Ni zhan Chen wrote:
> On 09/05/2012 05:25 PM, [email protected] wrote:
>> From: Wen Congyang <[email protected]>
>>
>> The memory device has only one node id. Store the node id when
>> enable the memory device, and we can reuse it when removing the
>> memory device.
>
> one question:
> if use numa emulation, memory device will associated to one node or ...?
Memory device has only one node, even if you use numa emulation.
Thanks,
Yasuaki Ishimatsu
>
>>
>> CC: David Rientjes <[email protected]>
>> CC: Jiang Liu <[email protected]>
>> CC: Len Brown <[email protected]>
>> CC: Benjamin Herrenschmidt <[email protected]>
>> CC: Paul Mackerras <[email protected]>
>> CC: Christoph Lameter <[email protected]>
>> Cc: Minchan Kim <[email protected]>
>> CC: Andrew Morton <[email protected]>
>> CC: KOSAKI Motohiro <[email protected]>
>> CC: Yasuaki Ishimatsu <[email protected]>
>> Signed-off-by: Wen Congyang <[email protected]>
>> Reviewed-by: Yasuaki Ishimatsu <[email protected]>
>> ---
>> drivers/acpi/acpi_memhotplug.c | 4 ++++
>> 1 files changed, 4 insertions(+), 0 deletions(-)
>>
>> diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
>> index 2a7beac..7873832 100644
>> --- a/drivers/acpi/acpi_memhotplug.c
>> +++ b/drivers/acpi/acpi_memhotplug.c
>> @@ -83,6 +83,7 @@ struct acpi_memory_info {
>> struct acpi_memory_device {
>> struct acpi_device * device;
>> unsigned int state; /* State of the memory device */
>> + int nid;
>> struct list_head res_list;
>> };
>> @@ -256,6 +257,9 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
>> info->enabled = 1;
>> num_enabled++;
>> }
>> +
>> + mem_device->nid = node;
>> +
>> if (!num_enabled) {
>> printk(KERN_ERR PREFIX "add_memory failed\n");
>> mem_device->state = MEMORY_INVALID_STATE;
>