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authorDave Hansen <haveblue@us.ibm.com>2005-06-23 00:07:50 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-23 09:45:03 -0700
commit785dcd44b60ec8ede76fed0af54333ab5f3e848c (patch)
treed928787cd93c608f24a6366d0990cd962a5a0c16 /mm
parente1785e85b9c81c67b581b511ee4efac6c81e9edb (diff)
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[PATCH] mm/Kconfig: give DISCONTIG more help text
This gives DISCONTIGMEM a bit more help text to explain what it does, not just when to choose it. 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 'mm')
-rw-r--r--mm/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 7d3a0054cba..8283685f3bb 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -23,6 +23,16 @@ config DISCONTIGMEM_MANUAL
bool "Discontigious Memory"
depends on ARCH_DISCONTIGMEM_ENABLE
help
+ This option provides enhanced support for discontiguous
+ memory systems, over FLATMEM. These systems have holes
+ in their physical address spaces, and this option provides
+ more efficient handling of these holes. However, the vast
+ majority of hardware has quite flat address spaces, and
+ can have degraded performance from extra overhead that
+ this option imposes.
+
+ Many NUMA configurations will have this as the only option.
+
If unsure, choose "Flat Memory" over this option.
endchoice