Add TuxOnIce support adapted for the 4.5-gnu kernel versionpck-4.5-gnu

1 files changed, 278 insertions, 0 deletions

diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index 68d3ebc12..5f93a3ccd 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -101,6 +101,284 @@ config PM_STD_PARTITION
 	  suspended image to. It will simply pick the first available swap 
 	  device.
 
+menuconfig TOI_CORE
+	bool "Enhanced Hibernation (TuxOnIce)"
+	depends on HIBERNATION
+	default y
+	---help---
+	  TuxOnIce is the 'new and improved' suspend support.
+
+	  See the TuxOnIce home page (tuxonice.net)
+	  for FAQs, HOWTOs and other documentation.
+
+	comment "Image Storage (you need at least one allocator)"
+		depends on TOI_CORE
+
+	config TOI_FILE
+		bool "File Allocator"
+		depends on TOI_CORE
+		default y
+		---help---
+		  This option enables support for storing an image in a
+		  simple file. You might want this if your swap is
+		  sometimes full enough that you don't have enough spare
+		  space to store an image.
+
+	config TOI_SWAP
+		bool "Swap Allocator"
+		depends on TOI_CORE && SWAP
+		default y
+		---help---
+		  This option enables support for storing an image in your
+		  swap space.
+
+	comment "General Options"
+		depends on TOI_CORE
+
+	config TOI_PRUNE
+		bool "Image pruning support"
+		depends on TOI_CORE && CRYPTO && BROKEN
+		default y
+		---help---
+		  This option adds support for using cryptoapi hashing
+		  algorithms to identify pages with the same content. We
+		  then write a much smaller pointer to the first copy of
+		  the data instead of a complete (perhaps compressed)
+                  additional copy.
+
+		  You probably want this, so say Y here.
+
+	comment "No image pruning support available without Cryptoapi support."
+		depends on TOI_CORE && !CRYPTO
+
+	config TOI_CRYPTO
+		bool "Compression support"
+		depends on TOI_CORE && CRYPTO
+		default y
+		---help---
+		  This option adds support for using cryptoapi compression
+		  algorithms. Compression is particularly useful as it can
+		  more than double your suspend and resume speed (depending
+		  upon how well your image compresses).
+
+		  You probably want this, so say Y here.
+
+	comment "No compression support available without Cryptoapi support."
+		depends on TOI_CORE && !CRYPTO
+
+	config TOI_USERUI
+		bool "Userspace User Interface support"
+		depends on TOI_CORE && NET && (VT || SERIAL_CONSOLE)
+		default y
+		---help---
+		  This option enabled support for a userspace based user interface
+		  to TuxOnIce, which allows you to have a nice display while suspending
+		  and resuming, and also enables features such as pressing escape to
+		  cancel a cycle or interactive debugging.
+
+	config TOI_USERUI_DEFAULT_PATH
+		string "Default userui program location"
+		default "/usr/local/sbin/tuxoniceui_text"
+		depends on TOI_USERUI
+		---help---
+		  This entry allows you to specify a default path to the userui binary.
+
+	config TOI_DEFAULT_IMAGE_SIZE_LIMIT
+		int "Default image size limit"
+		range -2 65536 
+		default "-2"
+		depends on TOI_CORE
+		---help---
+		  This entry allows you to specify a default image size limit. It can
+		  be overridden at run-time using /sys/power/tuxonice/image_size_limit.
+
+	config TOI_KEEP_IMAGE
+		bool "Allow Keep Image Mode"
+		depends on TOI_CORE
+		---help---
+		  This option allows you to keep and image and reuse it. It is intended
+		  __ONLY__ for use with systems where all filesystems are mounted read-
+		  only (kiosks, for example). To use it, compile this option in and boot
+		  normally. Set the KEEP_IMAGE flag in /sys/power/tuxonice and suspend.
+		  When you resume, the image will not be removed. You will be unable to turn
+		  off swap partitions (assuming you are using the swap allocator), but future
+		  suspends simply do a power-down. The image can be updated using the
+		  kernel command line parameter suspend_act= to turn off the keep image
+		  bit. Keep image mode is a little less user friendly on purpose - it
+		  should not be used without thought!
+
+	config TOI_INCREMENTAL
+		bool "Incremental Image Support"
+		depends on TOI_CORE && 64BIT && TOI_KEEP_IMAGE
+		default n
+		---help---
+		  This option enables the work in progress toward using the dirty page
+		  tracking to record changes to pages. It is hoped that
+		  this will be an initial step toward implementing storing just
+		  the differences between consecutive images, which will
+		  increase the amount of storage needed for the image, but also
+		  increase the speed at which writing an image occurs and
+		  reduce the wear and tear on drives.
+
+		  At the moment, all that is implemented is the first step of keeping
+		  an existing image and then comparing it to the contents in memory
+		  (by setting /sys/power/tuxonice/verify_image to 1 and triggering a
+		  (fake) resume) to see what the page change tracking should find to be
+		  different. If you have verify_image set to 1, TuxOnIce will automatically
+		  invalidate the old image when you next try to hibernate, so there's no
+		  greater chance of disk corruption than normal.
+
+	comment "No incremental image support available without Keep Image support."
+		depends on TOI_CORE && !TOI_KEEP_IMAGE && 64BIT
+
+	config TOI_REPLACE_SWSUSP
+		bool "Replace swsusp by default"
+		default y
+		depends on TOI_CORE
+		---help---
+		  TuxOnIce can replace swsusp. This option makes that the default state,
+		  requiring you to echo 0 > /sys/power/tuxonice/replace_swsusp if you want
+		  to use the vanilla kernel functionality. Note that your initrd/ramfs will
+		  need to do this before trying to resume, too.
+		  With overriding swsusp enabled, echoing disk  to /sys/power/state will
+		  start a TuxOnIce cycle. If resume= doesn't specify an allocator and both
+		  the swap and file allocators are compiled in, the swap allocator will be
+		  used by default.
+
+	config TOI_IGNORE_LATE_INITCALL
+		bool "Wait for initrd/ramfs to run, by default"
+		default n
+		depends on TOI_CORE
+		---help---
+		  When booting, TuxOnIce can check for an image and start to resume prior
+		  to any initrd/ramfs running (via a late initcall).
+
+		  If you don't have an initrd/ramfs, this is what you want to happen -
+		  otherwise you won't be able to safely resume. You should set this option
+		  to 'No'.
+
+		  If, however, you want your initrd/ramfs to run anyway before resuming,
+		  you need to tell TuxOnIce to ignore that earlier opportunity to resume.
+		  This can be done either by using this compile time option, or by
+		  overriding this option with the boot-time parameter toi_initramfs_resume_only=1.
+
+		  Note that if TuxOnIce can't resume at the earlier opportunity, the
+		  value of this option won't matter - the initramfs/initrd (if any) will
+		  run anyway.
+
+	menuconfig TOI_CLUSTER
+		bool "Cluster support"
+		default n
+		depends on TOI_CORE && NET && BROKEN
+		---help---
+		  Support for linking multiple machines in a cluster so that they suspend
+		  and resume together.
+
+	config TOI_DEFAULT_CLUSTER_INTERFACE
+		string "Default cluster interface"
+		depends on TOI_CLUSTER
+		---help---
+		  The default interface on which to communicate with other nodes in
+		  the cluster.
+
+		  If no value is set here, cluster support will be disabled by default.
+
+	config TOI_DEFAULT_CLUSTER_KEY
+		string "Default cluster key"
+		default "Default"
+		depends on TOI_CLUSTER
+		---help---
+		  The default key used by this node. All nodes in the same cluster
+		  have the same key. Multiple clusters may coexist on the same lan
+		  by using different values for this key.
+
+	config TOI_CLUSTER_IMAGE_TIMEOUT
+		int "Timeout when checking for image"
+		default 15
+		depends on TOI_CLUSTER
+		---help---
+		  Timeout (seconds) before continuing to boot when waiting to see
+		  whether other nodes might have an image. Set to -1 to wait
+		  indefinitely. In WAIT_UNTIL_NODES is non zero, we might continue
+		  booting sooner than this timeout.
+
+	config TOI_CLUSTER_WAIT_UNTIL_NODES
+		int "Nodes without image before continuing"
+		default 0
+		depends on TOI_CLUSTER
+		---help---
+		  When booting and no image is found, we wait to see if other nodes
+		  have an image before continuing to boot. This value lets us
+		  continue after seeing a certain number of nodes without an image,
+		  instead of continuing to wait for the timeout. Set to 0 to only
+		  use the timeout.
+
+	config TOI_DEFAULT_CLUSTER_PRE_HIBERNATE
+		string "Default pre-hibernate script"
+		depends on TOI_CLUSTER
+		---help---
+		  The default script to be called when starting to hibernate.
+
+	config TOI_DEFAULT_CLUSTER_POST_HIBERNATE
+		string "Default post-hibernate script"
+		depends on TOI_CLUSTER
+		---help---
+		  The default script to be called after resuming from hibernation.
+
+	config TOI_DEFAULT_WAIT
+		int "Default waiting time for emergency boot messages"
+		default "25"
+		range -1 32768
+		depends on TOI_CORE
+		help
+		  TuxOnIce can display warnings very early in the process of resuming,
+		  if (for example) it appears that you have booted a kernel that doesn't
+		  match an image on disk. It can then give you the opportunity to either
+		  continue booting that kernel, or reboot the machine. This option can be
+		  used to control how long to wait in such circumstances. -1 means wait
+		  forever. 0 means don't wait at all (do the default action, which will
+		  generally be to continue booting and remove the image). Values of 1 or
+		  more indicate a number of seconds (up to 255) to wait before doing the
+		  default.
+
+	config  TOI_DEFAULT_EXTRA_PAGES_ALLOWANCE
+		int "Default extra pages allowance"
+		default "2000"
+		range 500 32768
+		depends on TOI_CORE
+		help
+		  This value controls the default for the allowance TuxOnIce makes for
+		  drivers to allocate extra memory during the atomic copy. The default
+		  value of 2000 will be okay in most cases. If you are using
+		  DRI, the easiest way to find what value to use is to try to hibernate
+		  and look at how many pages were actually needed in the sysfs entry
+		  /sys/power/tuxonice/debug_info (first number on the last line), adding
+		  a little extra because the value is not always the same.
+
+	config TOI_CHECKSUM
+		bool "Checksum pageset2"
+		default n
+		depends on TOI_CORE
+		select CRYPTO
+		select CRYPTO_ALGAPI
+		select CRYPTO_MD4
+		---help---
+		  Adds support for checksumming pageset2 pages, to ensure you really get an
+		  atomic copy. Since some filesystems (XFS especially) change metadata even
+		  when there's no other activity, we need this to check for pages that have
+		  been changed while we were saving the page cache. If your debugging output
+		  always says no pages were resaved, you may be able to safely disable this
+		  option.
+
+config TOI
+	bool
+	depends on TOI_CORE!=n
+	default y
+
+config TOI_ZRAM_SUPPORT
+	def_bool y
+	depends on TOI && ZRAM!=n
+
 config PM_SLEEP
 	def_bool y
 	depends on SUSPEND || HIBERNATE_CALLBACKS