diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-11-08 20:23:02 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-08 20:23:02 +0100 |
| commit | 895e031707954a9ca26ed4f5f794575313854ed1 (patch) | |
| tree | ec7cd5515f346e6f94bc43e63d55ebc8ddf4173d /init | |
| parent | 838e8bb71dc0c892bf8f84abd3c709d8fe3a8d3c (diff) | |
| parent | a622cf69b806bbb1887913c04e01d0c25b892876 (diff) | |
Merge branch 'linus' into x86/cleanups
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 16 | ||||
| -rw-r--r-- | init/do_mounts_md.c | 3 |
2 files changed, 11 insertions, 8 deletions
diff --git a/init/Kconfig b/init/Kconfig index 44e9208f9c7..86b00c53fad 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -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. 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" |