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[PATCH] powerpc: Allow devices to register with numa topology

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Change of_node_to_nid() to traverse the device tree, looking for a numa id.
Cell uses this to assign ids to SPUs, which are children of the CPU node.
Existing users of of_node_to_nid() are altered to use of_node_to_nid_single(),
which doesn't do the traversal.

Export an attach_sysdev_to_node() function, allowing system devices (eg.
SPUs) to link themselves into the numa topology in sysfs.

Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeremy Kerr
2006-05-01 12:16:12 -07:00
committed by Linus Torvalds
parent bed120c64e
commit 953039c8df
3 changed files with 69 additions and 5 deletions
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24
include/asm-powerpc/topology.h
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@@ -4,6 +4,9 @@
#include <linux/config.h>
struct sys_device;
struct device_node;
#ifdef CONFIG_NUMA
#include <asm/mmzone.h>
@@ -27,6 +30,8 @@ static inline int node_to_first_cpu(int node)
return first_cpu(tmp);
}
int of_node_to_nid(struct device_node *device);
#define pcibus_to_node(node) (-1)
#define pcibus_to_cpumask(bus) (cpu_online_map)
@@ -57,10 +62,29 @@ static inline int node_to_first_cpu(int node)
extern void __init dump_numa_cpu_topology(void);
extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
#else
static inline int of_node_to_nid(struct device_node *device)
{
return 0;
}
static inline void dump_numa_cpu_topology(void) {}
static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid)
{
return 0;
}
static inline void sysfs_remove_device_from_node(struct sys_device *dev,
int nid)
{
}
#include <asm-generic/topology.h>
#endif /* CONFIG_NUMA */