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authorDave Hansen <haveblue@us.ibm.com>2005-06-23 11:07:39 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-23 20:45:01 +0400
commit6f167ec721108c9282d54424516a12c805e3c306 (patch)
treef7094a2524611ede76b32e4cc3c07987b7b0e275 /include/linux/bootmem.h
parentc2ebaa425e6630adcbf757b004d257dd4204925b (diff)
downloadlinux-6f167ec721108c9282d54424516a12c805e3c306.tar.xz
[PATCH] sparsemem base: simple NUMA remap space allocator
Introduce a simple allocator for the NUMA remap space. This space is very scarce, used for structures which are best allocated node local. This mechanism is also used on non-NUMA ia64 systems with a vmem_map to keep the pgdat->node_mem_map initialized in a consistent place for all architectures. Issues: o alloc_remap takes a node_id where we might expect a pgdat which was intended to allow us to allocate the pgdat's using this mechanism; which we do not yet do. Could have alloc_remap_node() and alloc_remap_nid() for this purpose. Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/bootmem.h')
-rw-r--r--include/linux/bootmem.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index 0dd8ca1a3d5a..500f451ce0c0 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -67,6 +67,15 @@ extern void * __init __alloc_bootmem_node (pg_data_t *pgdat, unsigned long size,
__alloc_bootmem_node((pgdat), (x), PAGE_SIZE, 0)
#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
+#ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP
+extern void *alloc_remap(int nid, unsigned long size);
+#else
+static inline void *alloc_remap(int nid, unsigned long size)
+{
+ return NULL;
+}
+#endif
+
extern unsigned long __initdata nr_kernel_pages;
extern unsigned long __initdata nr_all_pages;