Rewrite the help descriptions for clarity, accuracy and consistency.
Kernel config options affected:
- SLUB_DEBUG
- SLAB
- SLUB
- SLOB
Signed-off-by: Nick Andrew <[EMAIL PROTECTED]>
---
Try #3.
--- a/init/Kconfig 2008-02-20 09:34:48.000000000 +1100
+++ b/init/Kconfig 2008-02-20 09:50:54.000000000 +1100
@@ -683,31 +683,48 @@ config SLUB_DEBUG
bool "Enable SLUB debugging support" if EMBEDDED
depends on SLUB
help
+ Enable debugging on the "SLUB" slab allocator.
+
SLUB has extensive debug support features. Disabling these can
result in significant savings in code size. This also disables
SLUB sysfs support. /sys/slab will not exist and there will be
no support for cache validation etc.
+ If unsure, say N.
+
choice
prompt "Choose SLAB allocator"
default SLUB
help
- This option allows to select a slab allocator.
+ This option selects a slab allocator.
+
+ A slab is a contiguous area of kernel memory. Slabs are of
+ fixed size (1 or more times the page size) and are used as
+ the container for allocation of kernel data structures. This
+ reduces memory fragmentation and makes allocation very fast,
+ improving kernel performance.
+
+ "SLUB" is the default slab allocator.
+
+ See wikipedia:Slab_allocation for more details.
config SLAB
bool "SLAB"
help
- The regular slab allocator that is established and known to work
- well in all environments. It organizes cache hot objects in
- per cpu and per node queues. SLAB is the default choice for
- a slab allocator.
+ SLAB is the original slab allocator that is established and
+ known to work well in all environments. It organizes cache
+ hot objects in per-CPU and per-node queues.
+
+ SLAB has been superseded by SLUB.
config SLUB
bool "SLUB (Unqueued Allocator)"
help
SLUB is a slab allocator that minimizes cache line usage
- instead of managing queues of cached objects (SLAB approach).
- Per cpu caching is realized using slabs of objects instead
+ instead of managing queues of cached objects (the SLAB
+ approach).
+
+ Per-CPU caching is realized using slabs of objects instead
of queues of objects. SLUB can use memory efficiently
and has enhanced diagnostics.
@@ -715,9 +732,11 @@ config SLOB
depends on EMBEDDED
bool "SLOB (Simple Allocator)"
help
- SLOB replaces the stock allocator with a drastically simpler
- allocator. SLOB is generally more space efficient but
- does not perform as well on large systems.
+ SLOB is a drastically simpler allocator for use in embedded
+ systems.
+
+ SLOB is generally more space efficient but does not perform
+ as well on large systems.
endchoice
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