diff options
Diffstat (limited to 'init/Kconfig')
| -rw-r--r-- | init/Kconfig | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/init/Kconfig b/init/Kconfig index d0edf42f4db..e63a017c391 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -143,9 +143,7 @@ config POSIX_MQUEUE queues every message has a priority which decides about succession of receiving it by a process. If you want to compile and run programs written e.g. for Solaris with use of its POSIX message - queues (functions mq_*) say Y here. To use this feature you will - also need mqueue library, available from - <http://www.mat.uni.torun.pl/~wrona/posix_ipc/> + queues (functions mq_*) say Y here. POSIX message queues are visible as a filesystem called 'mqueue' and can be mounted somewhere if you want to do filesystem @@ -308,7 +306,7 @@ config SYSFS_DEPRECATED releases. If enabled, this option will also move any device structures - that belong to a class, back into the /sys/class heirachy, in + that belong to a class, back into the /sys/class hierarchy, in order to support older versions of udev. If you are using a distro that was released in 2006 or later, @@ -504,6 +502,15 @@ config VM_EVENT_COUNTERS on EMBEDDED systems. /proc/vmstat will only show page counts if VM event counters are disabled. +config SLUB_DEBUG + default y + bool "Enable SLUB debugging support" if EMBEDDED + help + 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. + choice prompt "Choose SLAB allocator" default SLAB @@ -514,9 +521,9 @@ config SLAB bool "SLAB" help The regular slab allocator that is established and known to work - well in all environments. It organizes chache hot objects in + well in all environments. It organizes cache hot objects in per cpu and per node queues. SLAB is the default choice for - slab allocator. + a slab allocator. config SLUB depends on EXPERIMENTAL && !ARCH_USES_SLAB_PAGE_STRUCT @@ -526,21 +533,20 @@ config SLUB instead of managing queues of cached objects (SLAB approach). Per cpu caching is realized using slabs of objects instead of queues of objects. SLUB can use memory efficiently - way and has enhanced diagnostics. + and has enhanced diagnostics. config SLOB # -# SLOB cannot support SMP because SLAB_DESTROY_BY_RCU does not work -# properly. +# SLOB does not support SMP because SLAB_DESTROY_BY_RCU is unsupported # depends on EMBEDDED && !SMP && !SPARSEMEM bool "SLOB (Simple Allocator)" help SLOB replaces the SLAB allocator with a drastically simpler allocator. SLOB is more space efficient that SLAB but does not - scale well (single lock for all operations) and is more susceptible - to fragmentation. SLOB it is a great choice to reduce - memory usage and code size for embedded systems. + scale well (single lock for all operations) and is also highly + susceptible to fragmentation. SLUB can accomplish a higher object + density. It is usually better to use SLUB instead of SLOB. endchoice |