summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorYasunori Goto <y-goto@jp.fujitsu.com>2006-06-27 02:53:31 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-27 17:32:36 -0700
commit1e3590e2e4a38e8390fdac5bda23330bf2801838 (patch)
tree528591e9db601af913756b11d37e451202584cd2
parentbc02af93dd2bbddce1b55e0a493f833a1b7cf140 (diff)
downloadop-kernel-dev-1e3590e2e4a38e8390fdac5bda23330bf2801838.zip
op-kernel-dev-1e3590e2e4a38e8390fdac5bda23330bf2801838.tar.gz
[PATCH] pgdat allocation for new node add (get node id by acpi)
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 of node hot-add patch. 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> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: "Brown, Len" <len.brown@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--drivers/acpi/acpi_memhotplug.c3
-rw-r--r--drivers/acpi/numa.c15
-rw-r--r--include/linux/acpi.h6
3 files changed, 22 insertions, 2 deletions
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 0424326e..1012284 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -215,7 +215,7 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
{
int result, num_enabled = 0;
struct acpi_memory_info *info;
- int node = 0;
+ int node;
ACPI_FUNCTION_TRACE("acpi_memory_enable_device");
@@ -228,6 +228,7 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
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
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index e2c1a16..13d6d5bd 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -254,5 +254,18 @@ int acpi_get_pxm(acpi_handle h)
} while (ACPI_SUCCESS(status));
return -1;
}
-
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);
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 90d6df1..88b5dfd 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -528,12 +528,18 @@ static inline void acpi_set_cstate_limit(unsigned int new_limit) { return; }
#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;
OpenPOWER on IntegriCloud