|author||Dave Hansen <firstname.lastname@example.org>||2005-06-23 00:07:50 -0700|
|committer||Linus Torvalds <email@example.com>||2005-06-23 09:45:03 -0700|
[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 <firstname.lastname@example.org> Signed-off-by: Andrew Morton <email@example.com> Signed-off-by: Linus Torvalds <firstname.lastname@example.org>
Diffstat (limited to 'mm')
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 7d3a0054cba..8283685f3bb 100644
@@ -23,6 +23,16 @@ config DISCONTIGMEM_MANUAL
bool "Discontigious Memory"
depends on ARCH_DISCONTIGMEM_ENABLE
+ 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.