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authorJeff Garzik <jgarzik@pobox.com>2005-09-08 05:39:55 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-09-08 05:39:55 -0400
commitc324b44c34050cf2a9b58830e11c974806bd85d8 (patch)
tree3ac45a783221283925cd698334a8f5e7dd4c1df8 /mm/Kconfig
parent2fcf522509cceea524b6e7ece8fd6759b682175a (diff)
parentcaf39e87cc1182f7dae84eefc43ca14d54c78ef9 (diff)
Merge /spare/repo/linux-2.6/
Diffstat (limited to 'mm/Kconfig')
-rw-r--r--mm/Kconfig22
1 files changed, 22 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index cd379936cac..4e9937ac352 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -89,3 +89,25 @@ config NEED_MULTIPLE_NODES
config HAVE_MEMORY_PRESENT
def_bool y
depends on ARCH_HAVE_MEMORY_PRESENT || SPARSEMEM
+
+#
+# SPARSEMEM_EXTREME (which is the default) does some bootmem
+# allocations when memory_present() is called. If this can not
+# be done on your architecture, select this option. However,
+# statically allocating the mem_section[] array can potentially
+# consume vast quantities of .bss, so be careful.
+#
+# This option will also potentially produce smaller runtime code
+# with gcc 3.4 and later.
+#
+config SPARSEMEM_STATIC
+ def_bool n
+
+#
+# Architectecture platforms which require a two level mem_section in SPARSEMEM
+# must select this option. This is usually for architecture platforms with
+# an extremely sparse physical address space.
+#
+config SPARSEMEM_EXTREME
+ def_bool y
+ depends on SPARSEMEM && !SPARSEMEM_STATIC