diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 27 | ||||
| -rw-r--r-- | init/do_mounts_md.c | 3 | ||||
| -rw-r--r-- | init/main.c | 12 |
3 files changed, 20 insertions, 22 deletions
diff --git a/init/Kconfig b/init/Kconfig index 113c74c07da..f763762d544 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 diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c index 4c87ee1fe5d..d6da5cdd3c3 100644 --- a/init/do_mounts_md.c +++ b/init/do_mounts_md.c @@ -1,6 +1,5 @@ - -#include <linux/raid/md.h> #include <linux/delay.h> +#include <linux/raid/md.h> #include "do_mounts.h" diff --git a/init/main.c b/init/main.c index 3e17a3bafe6..7e117a231af 100644 --- a/init/main.c +++ b/init/main.c @@ -52,6 +52,7 @@ #include <linux/key.h> #include <linux/unwind.h> #include <linux/buffer_head.h> +#include <linux/page_cgroup.h> #include <linux/debug_locks.h> #include <linux/debugobjects.h> #include <linux/lockdep.h> @@ -647,6 +648,7 @@ asmlinkage void __init start_kernel(void) vmalloc_init(); vfs_caches_init_early(); cpuset_init_early(); + page_cgroup_init(); mem_init(); enable_debug_pagealloc(); cpu_hotplug_init(); @@ -670,7 +672,6 @@ asmlinkage void __init start_kernel(void) fork_init(num_physpages); proc_caches_init(); buffer_init(); - unnamed_dev_init(); key_init(); security_init(); vfs_caches_init(num_physpages); @@ -697,13 +698,7 @@ asmlinkage void __init start_kernel(void) } static int initcall_debug; - -static int __init initcall_debug_setup(char *str) -{ - initcall_debug = 1; - return 1; -} -__setup("initcall_debug", initcall_debug_setup); +core_param(initcall_debug, initcall_debug, bool, 0644); int do_one_initcall(initcall_t fn) { @@ -773,7 +768,6 @@ static void __init do_initcalls(void) static void __init do_basic_setup(void) { rcu_init_sched(); /* needed by module_init stage. */ - /* drivers will send hotplug events */ init_workqueues(); usermodehelper_init(); driver_init(); |