Commit 785dcd44b60ec8ede76fed0af54333ab5f3e848c
Committed by
Linus Torvalds
1 parent
e1785e85b9
Exists in
master
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20 other branches
[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>
Showing 1 changed file with 10 additions and 0 deletions Side-by-side Diff
mm/Kconfig
... | ... | @@ -23,6 +23,16 @@ |
23 | 23 | bool "Discontigious Memory" |
24 | 24 | depends on ARCH_DISCONTIGMEM_ENABLE |
25 | 25 | help |
26 | + This option provides enhanced support for discontiguous | |
27 | + memory systems, over FLATMEM. These systems have holes | |
28 | + in their physical address spaces, and this option provides | |
29 | + more efficient handling of these holes. However, the vast | |
30 | + majority of hardware has quite flat address spaces, and | |
31 | + can have degraded performance from extra overhead that | |
32 | + this option imposes. | |
33 | + | |
34 | + Many NUMA configurations will have this as the only option. | |
35 | + | |
26 | 36 | If unsure, choose "Flat Memory" over this option. |
27 | 37 | |
28 | 38 | endchoice |