Re: [RFC PATCH 1/8] memory-hotplug: store the node id in acpi_memory_device
From: Yasuaki Ishimatsu <hidden>
Date: 2012-07-20 07:36:08
Also in:
linux-acpi, linux-mm, lkml
Hi Wen, 2012/07/20 16:09, Wen Congyang wrote:
The memory device has only one node id. Store the node id when enabling the memory device, and we can reuse it when removing the memory device. CC: David Rientjes <rientjes@google.com> CC: Jiang Liu <redacted> CC: Len Brown <redacted> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Paul Mackerras <redacted> CC: Christoph Lameter <redacted> Cc: Minchan Kim <redacted> CC: Andrew Morton <akpm@linux-foundation.org> CC: KOSAKI Motohiro <redacted> CC: Yasuaki Ishimatsu <redacted> Signed-off-by: Wen Congyang <redacted> ---
It looks to me. Reviewed-by: Yasuaki Ishimatsu <redacted> Thanks, Yasuaki Ishimatsu
quoted hunk ↗ jump to hunk
drivers/acpi/acpi_memhotplug.c | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-)diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index 5cafd6b..db8de39 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c@@ -84,6 +84,7 @@ 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; };@@ -257,6 +258,9 @@ 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;@@ -463,7 +467,7 @@ static int acpi_memory_device_remove(struct acpi_device *device, int type) mem_device = acpi_driver_data(device); - node = acpi_get_node(mem_device->device->handle); + node = mem_device->nid; list_for_each_entry_safe(info, tmp, &mem_device->res_list, list) { if (!info->enabled) continue;@@ -473,8 +477,6 @@ static int acpi_memory_device_remove(struct acpi_device *device, int type) if (result) return result; } - if (node < 0) - node = memory_add_physaddr_to_nid(info->start_addr); result = remove_memory(node, info->start_addr, info->length); if (result)