Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[linux-drm-fsl-dcu.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index db615e720d28f66383bb5aaa910dab7dbadd1ac7..53c41a84dd0396abeaffb3c2d122cffdeb15810a 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -924,6 +924,7 @@ config NUMA_BALANCING_DEFAULT_ENABLED
 menuconfig CGROUPS
        bool "Control Group support"
        select KERNFS
+       select PERCPU_RWSEM
        help
          This option adds support for grouping sets of processes together, for
          use with process control subsystems such as Cpusets, CFS, memory
@@ -1127,10 +1128,16 @@ config DEBUG_BLK_CGROUP
        Enable some debugging help. Currently it exports additional stat
        files in a cgroup which can be useful for debugging.
 
+config CGROUP_WRITEBACK
+       bool
+       depends on MEMCG && BLK_CGROUP
+       default y
+
 endif # CGROUPS
 
 config CHECKPOINT_RESTORE
        bool "Checkpoint/restore support" if EXPERT
+       select PROC_CHILDREN
        default n
        help
          Enables additional kernel features in a sake of checkpoint/restore.
@@ -1934,26 +1941,21 @@ config MODULE_COMPRESS
        bool "Compress modules on installation"
        depends on MODULES
        help
-         This option compresses the kernel modules when 'make
-         modules_install' is run.
 
-         The modules will be compressed either using gzip or xz depend on the
-         choice made in "Compression algorithm".
+         Compresses kernel modules when 'make modules_install' is run; gzip or
+         xz depending on "Compression algorithm" below.
 
-         module-init-tools has support for gzip format while kmod handle gzip
-         and xz compressed modules.
+         module-init-tools MAY support gzip, and kmod MAY support gzip and xz.
 
-         When a kernel module is installed from outside of the main kernel
-         source and uses the Kbuild system for installing modules then that
-         kernel module will also be compressed when it is installed.
+         Out-of-tree kernel modules installed using Kbuild will also be
+         compressed upon installation.
 
-         This option provides little benefit when the modules are to be used inside
-         an initrd or initramfs, it generally is more efficient to compress the whole
-         initrd or initramfs instead.
+         Note: for modules inside an initrd or initramfs, it's more efficient
+         to compress the whole initrd or initramfs instead.
 
-         This is fully compatible with signed modules while the signed module is
-         compressed. module-init-tools or kmod handles decompression and provide to
-         other layer the uncompressed but signed payload.
+         Note: This is fully compatible with signed modules.
+
+         If in doubt, say N.
 
 choice
        prompt "Compression algorithm"
@@ -1975,6 +1977,10 @@ endchoice
 
 endif # MODULES
 
+config MODULES_TREE_LOOKUP
+       def_bool y
+       depends on PERF_EVENTS || TRACING
+
 config INIT_ALL_POSSIBLE
        bool
        help