X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=init%2FKconfig;h=f291f086caa1c2e89909ffe5f910786a331ff588;hb=bf53de907dfdaac178c92d774aae7370d7b97d20;hp=06330a305249ae68bc9a8e8372ffa6e3fbdcccf8;hpb=3d137310245e4cdc3e8c8ba1bea2e145a87ae8e3;p=safe%2Fjmp%2Flinux-2.6 diff --git a/init/Kconfig b/init/Kconfig index 06330a3..f291f08 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -354,7 +354,7 @@ config RT_GROUP_SCHED setting below. If enabled, it will also make it impossible to schedule realtime tasks for non-root users until you allocate realtime bandwidth for them. - See Documentation/sched-rt-group.txt for more information. + See Documentation/scheduler/sched-rt-group.txt for more information. choice depends on GROUP_SCHED @@ -401,16 +401,20 @@ config CGROUP_MEM_RES_CTLR depends on CGROUPS && RESOURCE_COUNTERS select MM_OWNER help - Provides a memory resource controller that manages both page cache and - RSS memory. + Provides a memory resource controller that manages both anonymous + memory and page cache. (See Documentation/controllers/memory.txt) Note that setting this option increases fixed memory overhead - associated with each page of memory in the system by 4/8 bytes - and also increases cache misses because struct page on many 64bit - systems will not fit into a single cache line anymore. + associated with each page of memory in the system. By this, + 20(40)bytes/PAGE_SIZE on 32(64)bit system will be occupied by memory + usage tracking struct at boot. Total amount of this is printed out + at boot. Only enable when you're ok with these trade offs and really - sure you need the memory resource controller. + sure you need the memory resource controller. Even when you enable + this, you can set "cgroup_disable=memory" at your boot option to + disable memory resource controller and you can avoid overheads. + (and lose benefits of memory resource contoller) This config option also selects MM_OWNER config option, which could in turn add some fork/exit overhead. @@ -739,7 +743,8 @@ config VM_EVENT_COUNTERS config PCI_QUIRKS default y - bool "Enable PCI quirk workarounds" if EMBEDDED && PCI + bool "Enable PCI quirk workarounds" if EMBEDDED + depends on PCI help This enables workarounds for various PCI chipset bugs/quirks. Disable this only if your target machine is @@ -766,8 +771,7 @@ config 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. + per cpu and per node queues. config SLUB bool "SLUB (Unqueued Allocator)" @@ -776,7 +780,8 @@ 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 - and has enhanced diagnostics. + and has enhanced diagnostics. SLUB is the default choice for + a slab allocator. config SLOB depends on EMBEDDED @@ -794,8 +799,16 @@ config PROFILING Say Y here to enable the extended profiling support mechanisms used by profilers such as OProfile. +# +# Place an empty function call at each tracepoint site. Can be +# dynamically changed for a probe function. +# +config TRACEPOINTS + bool + config MARKERS bool "Activate markers" + depends on TRACEPOINTS help Place an empty function call at each marker site. Can be dynamically changed for a probe function.