Documentation/email-clients.txt: add some info about gmail

[linux-2.6-omap-h63xx.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index c11da38837e5b7bef935297d3ec0da85c90e1fd7..86b00c53fadeb833d054fab64d13fb9a0e8d6fde 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -299,6 +299,13 @@ config CGROUP_NS
           for instance virtual servers and checkpoint/restart
           jobs.
 
+config CGROUP_FREEZER
+        bool "control group freezer subsystem"
+        depends on CGROUPS
+        help
+          Provides a way to freeze and unfreeze all tasks in a
+         cgroup.
+
 config CGROUP_DEVICE
        bool "Device controller for cgroups"
        depends on CGROUPS && EXPERIMENTAL
@@ -394,16 +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.
@@ -713,6 +724,14 @@ config SHMEM
          option replaces shmem and tmpfs with the much simpler ramfs code,
          which may be appropriate on small systems without swap.
 
+config AIO
+       bool "Enable AIO support" if EMBEDDED
+       default y
+       help
+         This option enables POSIX asynchronous I/O which may by used
+          by some high performance threaded applications. Disabling
+          this option saves about 7k.
+
 config VM_EVENT_COUNTERS
        default y
        bool "Enable VM event counters for /proc/vmstat" if EMBEDDED
@@ -722,6 +741,15 @@ config VM_EVENT_COUNTERS
          on EMBEDDED systems.  /proc/vmstat will only show page counts
          if VM event counters are disabled.
 
+config PCI_QUIRKS
+       default y
+       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
+          unaffected by PCI quirks.
+
 config SLUB_DEBUG
        default y
        bool "Enable SLUB debugging support" if EMBEDDED
@@ -771,6 +799,13 @@ 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"
        help
@@ -779,16 +814,6 @@ config MARKERS
 
 source "arch/Kconfig"
 
-config PROC_PAGE_MONITOR
-       default y
-       depends on PROC_FS && MMU
-       bool "Enable /proc page monitoring" if EMBEDDED
-       help
-         Various /proc files exist to monitor process memory utilization:
-         /proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap,
-         /proc/kpagecount, and /proc/kpageflags. Disabling these
-          interfaces will reduce the size of the kernel by approximately 4kb.
-
 endmenu                # General setup
 
 config HAVE_GENERIC_DMA_COHERENT