Hi Chen,
2012/09/28 12:21, Ni zhan Chen wrote:
On 09/05/2012 05:25 PM, wency@xxxxxxxxxxxxxx wrote:
From: Wen Congyang <wency@xxxxxxxxxxxxxx>
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 <rientjes@xxxxxxxxxx>
CC: Jiang Liu <liuj97@xxxxxxxxx>
CC: Len Brown <len.brown@xxxxxxxxx>
CC: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
CC: Paul Mackerras <paulus@xxxxxxxxx>
CC: Christoph Lameter <cl@xxxxxxxxx>
Cc: Minchan Kim <minchan.kim@xxxxxxxxx>
CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
CC: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
CC: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
Signed-off-by: Wen Congyang <wency@xxxxxxxxxxxxxx>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
---
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;
--
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