[PATCH 3/3] mm/Kconfig: give DISCONTIG more help text

[PATCH 3/3] mm/Kconfig: give DISCONTIG more help text

[Dave Hansen]

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>
---

 memhotplug-dave/mm/Kconfig |   10 ++++++++++
 1 files changed, 10 insertions(+)

diff -puN mm/Kconfig~A2-mm-Kconfig-DISCONTIG-help-text mm/Kconfig
--- memhotplug/mm/Kconfig~A2-mm-Kconfig-DISCONTIG-help-text	2005-04-11 15:49:10.000000000 -0700
+++ memhotplug-dave/mm/Kconfig	2005-04-11 15:49:10.000000000 -0700
@@ -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
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