Messages in this thread Patch in this message | | | Date | Wed, 08 Mar 2006 22:43:07 +0900 | From | Yasunori Goto <> | Subject | [PATCH: 016/017](RFC) Memory hotplug for new nodes v.3. (get node id from acpi's handle) |
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This is to find node id from acpi's handle of memory_device in DSDT. _PXM for the new node can be found by acpi_get_pxm() by using new memory's handle. So, node id can be found by pxm_to_nid_map[].
This patch becomes simpler than v2. Because old add_memory() function doesn't have node id parameter. So, kernel must find its handle by physical address via DSDT again. But, v3 just give node id to add_memory() now.
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Index: pgdat6/drivers/acpi/acpi_memhotplug.c =================================================================== --- pgdat6.orig/drivers/acpi/acpi_memhotplug.c 2006-03-06 18:26:30.000000000 +0900 +++ pgdat6/drivers/acpi/acpi_memhotplug.c 2006-03-06 18:26:31.000000000 +0900 @@ -182,7 +182,7 @@ static int acpi_memory_check_device(stru static int acpi_memory_enable_device(struct acpi_memory_device *mem_device) { - int result; + int result, node; ACPI_FUNCTION_TRACE("acpi_memory_enable_device"); @@ -194,11 +194,12 @@ static int acpi_memory_enable_device(str return result; } + node = acpi_get_node(mem_device->handle); /* * Tell the VM there is more memory here... * Note: Assume that this function returns zero on success */ - result = add_memory(mem_device->start_addr, mem_device->length); + result = add_memory(node, mem_device->start_addr, mem_device->length); switch(result) { case 0: break; Index: pgdat6/drivers/acpi/numa.c =================================================================== --- pgdat6.orig/drivers/acpi/numa.c 2006-03-06 18:25:32.000000000 +0900 +++ pgdat6/drivers/acpi/numa.c 2006-03-06 18:26:31.000000000 +0900 @@ -258,3 +258,18 @@ int acpi_get_pxm(acpi_handle h) } EXPORT_SYMBOL(acpi_get_pxm); + +int acpi_get_node(acpi_handle *handle) +{ + int pxm, node = -1; + + ACPI_FUNCTION_TRACE("acpi_get_node"); + + pxm = acpi_get_pxm(handle); + if (pxm >= 0) + node = acpi_map_pxm_to_node(pxm); + + return_VALUE(node); +} + +EXPORT_SYMBOL(acpi_get_node); Index: pgdat6/include/linux/acpi.h =================================================================== --- pgdat6.orig/include/linux/acpi.h 2006-03-06 18:25:37.000000000 +0900 +++ pgdat6/include/linux/acpi.h 2006-03-06 18:26:31.000000000 +0900 @@ -529,12 +529,18 @@ static inline void acpi_set_cstate_limit #ifdef CONFIG_ACPI_NUMA int acpi_get_pxm(acpi_handle handle); +int acpi_get_node(acpi_handle *handle); #else static inline int acpi_get_pxm(acpi_handle handle) { return 0; } +static inline int acpi_get_node(acpi_handle *handle) +{ + return 0; +} #endif +extern int acpi_paddr_to_node(u64 start_addr, u64 size); extern int pnpacpi_disabled; -- Yasunori Goto
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