mirror of https://github.com/hak5/openwrt.git
Hauke Mehrtens
parent
bef592844b
commit
7a39e7860a
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@ -1,29 +0,0 @@
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menu "Configuration"
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depends on PACKAGE_compcache
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config COMPCACHE_ENABLE
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bool "enabled on boot"
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default n
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help
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Enables compressed ram swap devices.
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config COMPCACHE_RAM_REPORTED
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string "swap space reported to kernel in kb"
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default "2048"
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help
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This is the amount of memory that will be reported
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to the kernel as swap. The real ram in use will differ,
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because of lzo compression.
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Example:
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16 MB = 2048 KB
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32 MB = 4098 KB
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config COMPCACHE_BACKUP_DEV
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string "Backup device for compcache"
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default ""
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help
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Compcache will use this as a backup device for swap.
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Example:
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/dev/sda5
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endmenu
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@ -1,75 +0,0 @@
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#
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# Copyright (C) 2009-2010 OpenWrt.org
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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include $(TOPDIR)/rules.mk
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include $(INCLUDE_DIR)/kernel.mk
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PKG_NAME:=compcache
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PKG_VERSION:=0.6.2
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PKG_RELEASE:=2
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PKG_SOURCE_URL:=http://compcache.googlecode.com/files/
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PKG_MD5SUM:=27aec78dc50e34fb800c74e879057743
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PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
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include $(INCLUDE_DIR)/package.mk
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define KernelPackage/ramzswap
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SUBMENU:=Other modules
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DEPENDS:=@BUSYBOX_CONFIG_SWAPONOFF
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TITLE:=Driver for compressed ram swap device
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VERSION:=$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE)+$(PKG_RELEASE)
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FILES:=$(PKG_BUILD_DIR)/ramzswap.ko \
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$(PKG_BUILD_DIR)/sub-projects/compression/lzo-kmod/lzo1x.ko
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URL:=http://code.google.com/p/compcache/
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endef
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define Package/compcache
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SECTION:=util
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CATEGORY:=Utilities
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DEPENDS:=+kmod-ramzswap
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TITLE:=Compressed ram swap device
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URL:=http://code.google.com/p/compcache/
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MENU:=1
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endef
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include $(INCLUDE_DIR)/kernel-defaults.mk
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LZO = sub-projects/compression/lzo-kmod
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RZSC = sub-projects/rzscontrol
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BUILDFLAGS:=-DCONFIG_RAMZSWAP_STATS \
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-I$(PKG_BUILD_DIR)/$(LZO) \
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-Wall
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RZSCFLAGS:=-I$(PKG_BUILD_DIR)/$(RZSC)/../include \
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-I$(PKG_BUILD_DIR)/$(RZSC)/../..
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define Build/Compile
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$(MAKE) $(KERNEL_MAKEOPTS) EXTRA_CFLAGS="$(BUILDFLAGS)" M="$(PKG_BUILD_DIR)" modules
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$(TARGET_CC) $(TARGET_CFLAGS) $(RZSCFLAGS) $(PKG_BUILD_DIR)/$(RZSC)/rzscontrol.c -o $(PKG_BUILD_DIR)/rzscontrol
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endef
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define Package/compcache/install
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$(INSTALL_DIR) $(1)/etc/config
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$(INSTALL_DATA) ./files/compcache.config $(1)/etc/config/compcache
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$(SED) 's,%ENABLED%,$(if $(CONFIG_COMPCACHE_ENABLE),1,0),g' \
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-e 's,%RAM_REPORTED%,$(call qstrip,$(CONFIG_COMPCACHE_RAM_REPORTED)),g' \
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-e 's,%BACKUP_DEV%,$(call qstrip,$(CONFIG_COMPCACHE_BACKUP_DEV)),g' \
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$(1)/etc/config/compcache
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$(INSTALL_DIR) $(1)/etc/init.d
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$(INSTALL_BIN) ./files/compcache.init $(1)/etc/init.d/compcache
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$(INSTALL_DIR) $(1)/sbin
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$(INSTALL_BIN) $(PKG_BUILD_DIR)/rzscontrol $(1)/sbin/rzscontrol
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endef
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define Package/compcache/config
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source "$(SOURCE)/Config.in"
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endef
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$(eval $(call BuildPackage,compcache))
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$(eval $(call KernelPackage,ramzswap))
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@ -1,4 +0,0 @@
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config compcache
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option 'enabled' '%ENABLED%'
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option 'size_kbytes' '%RAM_REPORTED%'
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option 'backup_dev' '%BACKUP_DEV%'
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@ -1,48 +0,0 @@
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#!/bin/sh /etc/rc.common
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# Copyright (C) 2008 OpenWrt.org
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START=14
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load_modules() {
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local section="$1"
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config_get "size_kbytes" "$section" "size_kbytes"
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config_get "backup_dev" "$section" "backup_dev"
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#CC_PARAM_STR="memlimit_kb=$1 backing_dev=$BACKING_DEV"
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config_get_bool "enabled" "$section" "enabled" '1'
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if [ "$enabled" -gt 0 ]; then
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if [ "`cat /proc/swaps | grep 'ramzswap0'`" != "" ]; then
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echo "compcache already loaded"
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else
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if [ "$backup_dev" != "" ]; then
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params_set="memlimit_kb=$size_kbytes backing_swap=$backup_dev"
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else
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params_set="disksize_kb=$size_kbytes"
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fi
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if [ "`lsmod | grep 'ramzswap'`" == "" ]; then
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insmod lzo1x
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insmod ramzswap $params_set
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sleep 2
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swapon /dev/ramzswap0
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fi
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fi
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fi
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}
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remove_modules() {
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local section="$1"
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config_get_bool "enabled" "$section" "enabled" '1'
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if [ "$enabled" -gt 0 ]; then
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[ "`cat /proc/swaps | grep 'ramzswap0'`" != "" ] && swapoff /dev/ramzswap0
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[ "`lsmod | grep 'ramzswap'`" != "" ] && rmmod ramzswap &> /dev/null
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[ "`lsmod | grep 'lzo1x'`" != "" ] && rmmod lzo1x &> /dev/null
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fi
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}
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start() {
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config_load "compcache"
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config_foreach load_modules "compcache"
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}
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stop() {
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config_load "compcache"
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config_foreach remove_modules "compcache"
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}
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@ -1,647 +0,0 @@
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--- a/Makefile
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+++ b/Makefile
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@@ -1,14 +1,17 @@
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KERNEL_BUILD_PATH ?= "/lib/modules/$(shell uname -r)/build"
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XVM = sub-projects/allocators/xvmalloc-kmod
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+LZO = sub-projects/compression/lzo-kmod
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EXTRA_CFLAGS := -DCONFIG_RAMZSWAP_STATS \
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-Wall
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-obj-m += ramzswap.o
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+obj-m += ramzswap.o $(LZO)/lzo1x.o
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ramzswap-objs := ramzswap_drv.o $(XVM)/xvmalloc.o
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+
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all:
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make -C $(KERNEL_BUILD_PATH) M=$(PWD) modules
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+ make -C $(KERNEL_BUILD_PATH) M=$(PWD)/$(LZO) modules
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make -C sub-projects/rzscontrol
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doc:
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@@ -16,5 +19,6 @@ doc:
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clean:
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make -C $(KERNEL_BUILD_PATH) M=$(PWD) clean
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+ make -C $(KERNEL_BUILD_PATH) M=$(PWD)/$(LZO) clean
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make -C sub-projects/rzscontrol clean
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@rm -rf *.ko
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--- a/ramzswap_drv.c
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+++ b/ramzswap_drv.c
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@@ -23,13 +23,13 @@
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#include <linux/device.h>
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#include <linux/genhd.h>
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#include <linux/highmem.h>
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-#include <linux/lzo.h>
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#include <linux/string.h>
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#include <linux/swap.h>
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#include <linux/swapops.h>
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#include <linux/vmalloc.h>
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#include <linux/version.h>
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+#include "lzo.h"
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#include "compat.h"
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#include "ramzswap_drv.h"
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--- /dev/null
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+++ b/sub-projects/compression/lzo-kmod/lzo1x.c
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@@ -0,0 +1,7 @@
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+#include <linux/module.h>
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+
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+#include "lzo1x_compress.c"
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+#include "lzo1x_decompress.c"
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+
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+MODULE_LICENSE("GPL");
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+MODULE_DESCRIPTION("LZO1X Lib");
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--- /dev/null
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+++ b/sub-projects/compression/lzo-kmod/lzo1x_compress.c
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@@ -0,0 +1,227 @@
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+/*
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+ * LZO1X Compressor from MiniLZO
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+ *
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+ * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com>
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+ *
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+ * The full LZO package can be found at:
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+ * http://www.oberhumer.com/opensource/lzo/
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+ *
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+ * Changed for kernel use by:
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+ * Nitin Gupta <nitingupta910@gmail.com>
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+ * Richard Purdie <rpurdie@openedhand.com>
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+ */
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+
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+#include <linux/module.h>
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+#include <linux/kernel.h>
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+#include <asm/unaligned.h>
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+
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+#include "lzodefs.h"
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+#include "lzo.h"
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+
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+static noinline size_t
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+_lzo1x_1_do_compress(const unsigned char *in, size_t in_len,
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+ unsigned char *out, size_t *out_len, void *wrkmem)
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+{
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+ const unsigned char * const in_end = in + in_len;
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+ const unsigned char * const ip_end = in + in_len - M2_MAX_LEN - 5;
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+ const unsigned char ** const dict = wrkmem;
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+ const unsigned char *ip = in, *ii = ip;
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+ const unsigned char *end, *m, *m_pos;
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+ size_t m_off, m_len, dindex;
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+ unsigned char *op = out;
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+
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+ ip += 4;
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+
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+ for (;;) {
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+ dindex = ((size_t)(0x21 * DX3(ip, 5, 5, 6)) >> 5) & D_MASK;
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+ m_pos = dict[dindex];
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+
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+ if (m_pos < in)
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+ goto literal;
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+
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+ if (ip == m_pos || ((size_t)(ip - m_pos) > M4_MAX_OFFSET))
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+ goto literal;
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+
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+ m_off = ip - m_pos;
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+ if (m_off <= M2_MAX_OFFSET || m_pos[3] == ip[3])
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+ goto try_match;
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+
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+ dindex = (dindex & (D_MASK & 0x7ff)) ^ (D_HIGH | 0x1f);
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+ m_pos = dict[dindex];
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+
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+ if (m_pos < in)
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+ goto literal;
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+
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+ if (ip == m_pos || ((size_t)(ip - m_pos) > M4_MAX_OFFSET))
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+ goto literal;
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+
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+ m_off = ip - m_pos;
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+ if (m_off <= M2_MAX_OFFSET || m_pos[3] == ip[3])
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+ goto try_match;
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+
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+ goto literal;
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+
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+try_match:
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+ if (get_unaligned((const unsigned short *)m_pos)
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+ == get_unaligned((const unsigned short *)ip)) {
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+ if (likely(m_pos[2] == ip[2]))
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+ goto match;
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+ }
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+
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+literal:
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+ dict[dindex] = ip;
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+ ++ip;
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+ if (unlikely(ip >= ip_end))
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+ break;
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+ continue;
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+
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+match:
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+ dict[dindex] = ip;
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+ if (ip != ii) {
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+ size_t t = ip - ii;
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+
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+ if (t <= 3) {
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+ op[-2] |= t;
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+ } else if (t <= 18) {
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+ *op++ = (t - 3);
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+ } else {
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+ size_t tt = t - 18;
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+
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+ *op++ = 0;
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+ while (tt > 255) {
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+ tt -= 255;
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+ *op++ = 0;
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+ }
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+ *op++ = tt;
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+ }
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+ do {
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+ *op++ = *ii++;
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+ } while (--t > 0);
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+ }
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+
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+ ip += 3;
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+ if (m_pos[3] != *ip++ || m_pos[4] != *ip++
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+ || m_pos[5] != *ip++ || m_pos[6] != *ip++
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+ || m_pos[7] != *ip++ || m_pos[8] != *ip++) {
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+ --ip;
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+ m_len = ip - ii;
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+
|
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+ if (m_off <= M2_MAX_OFFSET) {
|
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+ m_off -= 1;
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+ *op++ = (((m_len - 1) << 5)
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+ | ((m_off & 7) << 2));
|
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+ *op++ = (m_off >> 3);
|
||||
+ } else if (m_off <= M3_MAX_OFFSET) {
|
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+ m_off -= 1;
|
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+ *op++ = (M3_MARKER | (m_len - 2));
|
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+ goto m3_m4_offset;
|
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+ } else {
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+ m_off -= 0x4000;
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+
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+ *op++ = (M4_MARKER | ((m_off & 0x4000) >> 11)
|
||||
+ | (m_len - 2));
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+ goto m3_m4_offset;
|
||||
+ }
|
||||
+ } else {
|
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+ end = in_end;
|
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+ m = m_pos + M2_MAX_LEN + 1;
|
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+
|
||||
+ while (ip < end && *m == *ip) {
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+ m++;
|
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+ ip++;
|
||||
+ }
|
||||
+ m_len = ip - ii;
|
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+
|
||||
+ if (m_off <= M3_MAX_OFFSET) {
|
||||
+ m_off -= 1;
|
||||
+ if (m_len <= 33) {
|
||||
+ *op++ = (M3_MARKER | (m_len - 2));
|
||||
+ } else {
|
||||
+ m_len -= 33;
|
||||
+ *op++ = M3_MARKER | 0;
|
||||
+ goto m3_m4_len;
|
||||
+ }
|
||||
+ } else {
|
||||
+ m_off -= 0x4000;
|
||||
+ if (m_len <= M4_MAX_LEN) {
|
||||
+ *op++ = (M4_MARKER
|
||||
+ | ((m_off & 0x4000) >> 11)
|
||||
+ | (m_len - 2));
|
||||
+ } else {
|
||||
+ m_len -= M4_MAX_LEN;
|
||||
+ *op++ = (M4_MARKER
|
||||
+ | ((m_off & 0x4000) >> 11));
|
||||
+m3_m4_len:
|
||||
+ while (m_len > 255) {
|
||||
+ m_len -= 255;
|
||||
+ *op++ = 0;
|
||||
+ }
|
||||
+
|
||||
+ *op++ = (m_len);
|
||||
+ }
|
||||
+ }
|
||||
+m3_m4_offset:
|
||||
+ *op++ = ((m_off & 63) << 2);
|
||||
+ *op++ = (m_off >> 6);
|
||||
+ }
|
||||
+
|
||||
+ ii = ip;
|
||||
+ if (unlikely(ip >= ip_end))
|
||||
+ break;
|
||||
+ }
|
||||
+
|
||||
+ *out_len = op - out;
|
||||
+ return in_end - ii;
|
||||
+}
|
||||
+
|
||||
+int lzo1x_1_compress(const unsigned char *in, size_t in_len, unsigned char *out,
|
||||
+ size_t *out_len, void *wrkmem)
|
||||
+{
|
||||
+ const unsigned char *ii;
|
||||
+ unsigned char *op = out;
|
||||
+ size_t t;
|
||||
+
|
||||
+ if (unlikely(in_len <= M2_MAX_LEN + 5)) {
|
||||
+ t = in_len;
|
||||
+ } else {
|
||||
+ t = _lzo1x_1_do_compress(in, in_len, op, out_len, wrkmem);
|
||||
+ op += *out_len;
|
||||
+ }
|
||||
+
|
||||
+ if (t > 0) {
|
||||
+ ii = in + in_len - t;
|
||||
+
|
||||
+ if (op == out && t <= 238) {
|
||||
+ *op++ = (17 + t);
|
||||
+ } else if (t <= 3) {
|
||||
+ op[-2] |= t;
|
||||
+ } else if (t <= 18) {
|
||||
+ *op++ = (t - 3);
|
||||
+ } else {
|
||||
+ size_t tt = t - 18;
|
||||
+
|
||||
+ *op++ = 0;
|
||||
+ while (tt > 255) {
|
||||
+ tt -= 255;
|
||||
+ *op++ = 0;
|
||||
+ }
|
||||
+
|
||||
+ *op++ = tt;
|
||||
+ }
|
||||
+ do {
|
||||
+ *op++ = *ii++;
|
||||
+ } while (--t > 0);
|
||||
+ }
|
||||
+
|
||||
+ *op++ = M4_MARKER | 1;
|
||||
+ *op++ = 0;
|
||||
+ *op++ = 0;
|
||||
+
|
||||
+ *out_len = op - out;
|
||||
+ return LZO_E_OK;
|
||||
+}
|
||||
+EXPORT_SYMBOL_GPL(lzo1x_1_compress);
|
||||
+
|
||||
+MODULE_LICENSE("GPL");
|
||||
+MODULE_DESCRIPTION("LZO1X-1 Compressor");
|
||||
+
|
||||
--- /dev/null
|
||||
+++ b/sub-projects/compression/lzo-kmod/lzo1x_decompress.c
|
||||
@@ -0,0 +1,255 @@
|
||||
+/*
|
||||
+ * LZO1X Decompressor from MiniLZO
|
||||
+ *
|
||||
+ * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com>
|
||||
+ *
|
||||
+ * The full LZO package can be found at:
|
||||
+ * http://www.oberhumer.com/opensource/lzo/
|
||||
+ *
|
||||
+ * Changed for kernel use by:
|
||||
+ * Nitin Gupta <nitingupta910@gmail.com>
|
||||
+ * Richard Purdie <rpurdie@openedhand.com>
|
||||
+ */
|
||||
+
|
||||
+#include <linux/module.h>
|
||||
+#include <linux/kernel.h>
|
||||
+#include <asm/byteorder.h>
|
||||
+#include <asm/unaligned.h>
|
||||
+
|
||||
+#include "lzodefs.h"
|
||||
+#include "lzo.h"
|
||||
+
|
||||
+#define HAVE_IP(x, ip_end, ip) ((size_t)(ip_end - ip) < (x))
|
||||
+#define HAVE_OP(x, op_end, op) ((size_t)(op_end - op) < (x))
|
||||
+#define HAVE_LB(m_pos, out, op) (m_pos < out || m_pos >= op)
|
||||
+
|
||||
+#define COPY4(dst, src) \
|
||||
+ put_unaligned(get_unaligned((const u32 *)(src)), (u32 *)(dst))
|
||||
+
|
||||
+int lzo1x_decompress_safe(const unsigned char *in, size_t in_len,
|
||||
+ unsigned char *out, size_t *out_len)
|
||||
+{
|
||||
+ const unsigned char * const ip_end = in + in_len;
|
||||
+ unsigned char * const op_end = out + *out_len;
|
||||
+ const unsigned char *ip = in, *m_pos;
|
||||
+ unsigned char *op = out;
|
||||
+ size_t t;
|
||||
+
|
||||
+ *out_len = 0;
|
||||
+
|
||||
+ if (*ip > 17) {
|
||||
+ t = *ip++ - 17;
|
||||
+ if (t < 4)
|
||||
+ goto match_next;
|
||||
+ if (HAVE_OP(t, op_end, op))
|
||||
+ goto output_overrun;
|
||||
+ if (HAVE_IP(t + 1, ip_end, ip))
|
||||
+ goto input_overrun;
|
||||
+ do {
|
||||
+ *op++ = *ip++;
|
||||
+ } while (--t > 0);
|
||||
+ goto first_literal_run;
|
||||
+ }
|
||||
+
|
||||
+ while ((ip < ip_end)) {
|
||||
+ t = *ip++;
|
||||
+ if (t >= 16)
|
||||
+ goto match;
|
||||
+ if (t == 0) {
|
||||
+ if (HAVE_IP(1, ip_end, ip))
|
||||
+ goto input_overrun;
|
||||
+ while (*ip == 0) {
|
||||
+ t += 255;
|
||||
+ ip++;
|
||||
+ if (HAVE_IP(1, ip_end, ip))
|
||||
+ goto input_overrun;
|
||||
+ }
|
||||
+ t += 15 + *ip++;
|
||||
+ }
|
||||
+ if (HAVE_OP(t + 3, op_end, op))
|
||||
+ goto output_overrun;
|
||||
+ if (HAVE_IP(t + 4, ip_end, ip))
|
||||
+ goto input_overrun;
|
||||
+
|
||||
+ COPY4(op, ip);
|
||||
+ op += 4;
|
||||
+ ip += 4;
|
||||
+ if (--t > 0) {
|
||||
+ if (t >= 4) {
|
||||
+ do {
|
||||
+ COPY4(op, ip);
|
||||
+ op += 4;
|
||||
+ ip += 4;
|
||||
+ t -= 4;
|
||||
+ } while (t >= 4);
|
||||
+ if (t > 0) {
|
||||
+ do {
|
||||
+ *op++ = *ip++;
|
||||
+ } while (--t > 0);
|
||||
+ }
|
||||
+ } else {
|
||||
+ do {
|
||||
+ *op++ = *ip++;
|
||||
+ } while (--t > 0);
|
||||
+ }
|
||||
+ }
|
||||
+
|
||||
+first_literal_run:
|
||||
+ t = *ip++;
|
||||
+ if (t >= 16)
|
||||
+ goto match;
|
||||
+ m_pos = op - (1 + M2_MAX_OFFSET);
|
||||
+ m_pos -= t >> 2;
|
||||
+ m_pos -= *ip++ << 2;
|
||||
+
|
||||
+ if (HAVE_LB(m_pos, out, op))
|
||||
+ goto lookbehind_overrun;
|
||||
+
|
||||
+ if (HAVE_OP(3, op_end, op))
|
||||
+ goto output_overrun;
|
||||
+ *op++ = *m_pos++;
|
||||
+ *op++ = *m_pos++;
|
||||
+ *op++ = *m_pos;
|
||||
+
|
||||
+ goto match_done;
|
||||
+
|
||||
+ do {
|
||||
+match:
|
||||
+ if (t >= 64) {
|
||||
+ m_pos = op - 1;
|
||||
+ m_pos -= (t >> 2) & 7;
|
||||
+ m_pos -= *ip++ << 3;
|
||||
+ t = (t >> 5) - 1;
|
||||
+ if (HAVE_LB(m_pos, out, op))
|
||||
+ goto lookbehind_overrun;
|
||||
+ if (HAVE_OP(t + 3 - 1, op_end, op))
|
||||
+ goto output_overrun;
|
||||
+ goto copy_match;
|
||||
+ } else if (t >= 32) {
|
||||
+ t &= 31;
|
||||
+ if (t == 0) {
|
||||
+ if (HAVE_IP(1, ip_end, ip))
|
||||
+ goto input_overrun;
|
||||
+ while (*ip == 0) {
|
||||
+ t += 255;
|
||||
+ ip++;
|
||||
+ if (HAVE_IP(1, ip_end, ip))
|
||||
+ goto input_overrun;
|
||||
+ }
|
||||
+ t += 31 + *ip++;
|
||||
+ }
|
||||
+ m_pos = op - 1;
|
||||
+ m_pos -= le16_to_cpu(get_unaligned(
|
||||
+ (const unsigned short *)ip)) >> 2;
|
||||
+ ip += 2;
|
||||
+ } else if (t >= 16) {
|
||||
+ m_pos = op;
|
||||
+ m_pos -= (t & 8) << 11;
|
||||
+
|
||||
+ t &= 7;
|
||||
+ if (t == 0) {
|
||||
+ if (HAVE_IP(1, ip_end, ip))
|
||||
+ goto input_overrun;
|
||||
+ while (*ip == 0) {
|
||||
+ t += 255;
|
||||
+ ip++;
|
||||
+ if (HAVE_IP(1, ip_end, ip))
|
||||
+ goto input_overrun;
|
||||
+ }
|
||||
+ t += 7 + *ip++;
|
||||
+ }
|
||||
+ m_pos -= le16_to_cpu(get_unaligned(
|
||||
+ (const unsigned short *)ip)) >> 2;
|
||||
+ ip += 2;
|
||||
+ if (m_pos == op)
|
||||
+ goto eof_found;
|
||||
+ m_pos -= 0x4000;
|
||||
+ } else {
|
||||
+ m_pos = op - 1;
|
||||
+ m_pos -= t >> 2;
|
||||
+ m_pos -= *ip++ << 2;
|
||||
+
|
||||
+ if (HAVE_LB(m_pos, out, op))
|
||||
+ goto lookbehind_overrun;
|
||||
+ if (HAVE_OP(2, op_end, op))
|
||||
+ goto output_overrun;
|
||||
+
|
||||
+ *op++ = *m_pos++;
|
||||
+ *op++ = *m_pos;
|
||||
+ goto match_done;
|
||||
+ }
|
||||
+
|
||||
+ if (HAVE_LB(m_pos, out, op))
|
||||
+ goto lookbehind_overrun;
|
||||
+ if (HAVE_OP(t + 3 - 1, op_end, op))
|
||||
+ goto output_overrun;
|
||||
+
|
||||
+ if (t >= 2 * 4 - (3 - 1) && (op - m_pos) >= 4) {
|
||||
+ COPY4(op, m_pos);
|
||||
+ op += 4;
|
||||
+ m_pos += 4;
|
||||
+ t -= 4 - (3 - 1);
|
||||
+ do {
|
||||
+ COPY4(op, m_pos);
|
||||
+ op += 4;
|
||||
+ m_pos += 4;
|
||||
+ t -= 4;
|
||||
+ } while (t >= 4);
|
||||
+ if (t > 0)
|
||||
+ do {
|
||||
+ *op++ = *m_pos++;
|
||||
+ } while (--t > 0);
|
||||
+ } else {
|
||||
+copy_match:
|
||||
+ *op++ = *m_pos++;
|
||||
+ *op++ = *m_pos++;
|
||||
+ do {
|
||||
+ *op++ = *m_pos++;
|
||||
+ } while (--t > 0);
|
||||
+ }
|
||||
+match_done:
|
||||
+ t = ip[-2] & 3;
|
||||
+ if (t == 0)
|
||||
+ break;
|
||||
+match_next:
|
||||
+ if (HAVE_OP(t, op_end, op))
|
||||
+ goto output_overrun;
|
||||
+ if (HAVE_IP(t + 1, ip_end, ip))
|
||||
+ goto input_overrun;
|
||||
+
|
||||
+ *op++ = *ip++;
|
||||
+ if (t > 1) {
|
||||
+ *op++ = *ip++;
|
||||
+ if (t > 2)
|
||||
+ *op++ = *ip++;
|
||||
+ }
|
||||
+
|
||||
+ t = *ip++;
|
||||
+ } while (ip < ip_end);
|
||||
+ }
|
||||
+
|
||||
+ *out_len = op - out;
|
||||
+ return LZO_E_EOF_NOT_FOUND;
|
||||
+
|
||||
+eof_found:
|
||||
+ *out_len = op - out;
|
||||
+ return (ip == ip_end ? LZO_E_OK :
|
||||
+ (ip < ip_end ? LZO_E_INPUT_NOT_CONSUMED : LZO_E_INPUT_OVERRUN));
|
||||
+input_overrun:
|
||||
+ *out_len = op - out;
|
||||
+ return LZO_E_INPUT_OVERRUN;
|
||||
+
|
||||
+output_overrun:
|
||||
+ *out_len = op - out;
|
||||
+ return LZO_E_OUTPUT_OVERRUN;
|
||||
+
|
||||
+lookbehind_overrun:
|
||||
+ *out_len = op - out;
|
||||
+ return LZO_E_LOOKBEHIND_OVERRUN;
|
||||
+}
|
||||
+
|
||||
+EXPORT_SYMBOL_GPL(lzo1x_decompress_safe);
|
||||
+
|
||||
+MODULE_LICENSE("GPL");
|
||||
+MODULE_DESCRIPTION("LZO1X Decompressor");
|
||||
+
|
||||
--- /dev/null
|
||||
+++ b/sub-projects/compression/lzo-kmod/lzodefs.h
|
||||
@@ -0,0 +1,43 @@
|
||||
+/*
|
||||
+ * lzodefs.h -- architecture, OS and compiler specific defines
|
||||
+ *
|
||||
+ * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com>
|
||||
+ *
|
||||
+ * The full LZO package can be found at:
|
||||
+ * http://www.oberhumer.com/opensource/lzo/
|
||||
+ *
|
||||
+ * Changed for kernel use by:
|
||||
+ * Nitin Gupta <nitingupta910@gmail.com>
|
||||
+ * Richard Purdie <rpurdie@openedhand.com>
|
||||
+ */
|
||||
+
|
||||
+#define LZO_VERSION 0x2020
|
||||
+#define LZO_VERSION_STRING "2.02"
|
||||
+#define LZO_VERSION_DATE "Oct 17 2005"
|
||||
+
|
||||
+#define M1_MAX_OFFSET 0x0400
|
||||
+#define M2_MAX_OFFSET 0x0800
|
||||
+#define M3_MAX_OFFSET 0x4000
|
||||
+#define M4_MAX_OFFSET 0xbfff
|
||||
+
|
||||
+#define M1_MIN_LEN 2
|
||||
+#define M1_MAX_LEN 2
|
||||
+#define M2_MIN_LEN 3
|
||||
+#define M2_MAX_LEN 8
|
||||
+#define M3_MIN_LEN 3
|
||||
+#define M3_MAX_LEN 33
|
||||
+#define M4_MIN_LEN 3
|
||||
+#define M4_MAX_LEN 9
|
||||
+
|
||||
+#define M1_MARKER 0
|
||||
+#define M2_MARKER 64
|
||||
+#define M3_MARKER 32
|
||||
+#define M4_MARKER 16
|
||||
+
|
||||
+#define D_BITS 14
|
||||
+#define D_MASK ((1u << D_BITS) - 1)
|
||||
+#define D_HIGH ((D_MASK >> 1) + 1)
|
||||
+
|
||||
+#define DX2(p, s1, s2) (((((size_t)((p)[2]) << (s2)) ^ (p)[1]) \
|
||||
+ << (s1)) ^ (p)[0])
|
||||
+#define DX3(p, s1, s2, s3) ((DX2((p)+1, s2, s3) << (s1)) ^ (p)[0])
|
||||
--- /dev/null
|
||||
+++ b/sub-projects/compression/lzo-kmod/lzo.h
|
||||
@@ -0,0 +1,44 @@
|
||||
+#ifndef __LZO_H__
|
||||
+#define __LZO_H__
|
||||
+/*
|
||||
+ * LZO Public Kernel Interface
|
||||
+ * A mini subset of the LZO real-time data compression library
|
||||
+ *
|
||||
+ * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com>
|
||||
+ *
|
||||
+ * The full LZO package can be found at:
|
||||
+ * http://www.oberhumer.com/opensource/lzo/
|
||||
+ *
|
||||
+ * Changed for kernel use by:
|
||||
+ * Nitin Gupta <nitingupta910@gmail.com>
|
||||
+ * Richard Purdie <rpurdie@openedhand.com>
|
||||
+ */
|
||||
+
|
||||
+#define LZO1X_MEM_COMPRESS (16384 * sizeof(unsigned char *))
|
||||
+#define LZO1X_1_MEM_COMPRESS LZO1X_MEM_COMPRESS
|
||||
+
|
||||
+#define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3)
|
||||
+
|
||||
+/* This requires 'workmem' of size LZO1X_1_MEM_COMPRESS */
|
||||
+int lzo1x_1_compress(const unsigned char *src, size_t src_len,
|
||||
+ unsigned char *dst, size_t *dst_len, void *wrkmem);
|
||||
+
|
||||
+/* safe decompression with overrun testing */
|
||||
+int lzo1x_decompress_safe(const unsigned char *src, size_t src_len,
|
||||
+ unsigned char *dst, size_t *dst_len);
|
||||
+
|
||||
+/*
|
||||
+ * Return values (< 0 = Error)
|
||||
+ */
|
||||
+#define LZO_E_OK 0
|
||||
+#define LZO_E_ERROR (-1)
|
||||
+#define LZO_E_OUT_OF_MEMORY (-2)
|
||||
+#define LZO_E_NOT_COMPRESSIBLE (-3)
|
||||
+#define LZO_E_INPUT_OVERRUN (-4)
|
||||
+#define LZO_E_OUTPUT_OVERRUN (-5)
|
||||
+#define LZO_E_LOOKBEHIND_OVERRUN (-6)
|
||||
+#define LZO_E_EOF_NOT_FOUND (-7)
|
||||
+#define LZO_E_INPUT_NOT_CONSUMED (-8)
|
||||
+#define LZO_E_NOT_YET_IMPLEMENTED (-9)
|
||||
+
|
||||
+#endif
|
||||
--- /dev/null
|
||||
+++ b/sub-projects/compression/lzo-kmod/Makefile
|
||||
@@ -0,0 +1,8 @@
|
||||
+obj-m += lzo1x_compress.o lzo1x_decompress.o
|
||||
+
|
||||
+all:
|
||||
+ make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
|
||||
+
|
||||
+clean:
|
||||
+ make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
|
||||
+
|
||||
|
|
@ -1,181 +0,0 @@
|
|||
--- a/sub-projects/compression/lzo-kmod/lzo1x_compress.c
|
||||
+++ b/sub-projects/compression/lzo-kmod/lzo1x_compress.c
|
||||
@@ -62,8 +62,12 @@ _lzo1x_1_do_compress(const unsigned char
|
||||
goto literal;
|
||||
|
||||
try_match:
|
||||
+#ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
|
||||
if (get_unaligned((const unsigned short *)m_pos)
|
||||
== get_unaligned((const unsigned short *)ip)) {
|
||||
+#else
|
||||
+ if (m_pos[0] == ip[0] && m_pos[1] == ip[1]) {
|
||||
+#endif
|
||||
if (likely(m_pos[2] == ip[2]))
|
||||
goto match;
|
||||
}
|
||||
@@ -94,9 +98,14 @@ match:
|
||||
}
|
||||
*op++ = tt;
|
||||
}
|
||||
- do {
|
||||
- *op++ = *ii++;
|
||||
- } while (--t > 0);
|
||||
+ if (t >= 2 * 4) {
|
||||
+ memcpy(op, ii, t);
|
||||
+ op += t;
|
||||
+ ii += t;
|
||||
+ } else
|
||||
+ do {
|
||||
+ *op++ = *ii++;
|
||||
+ } while (--t > 0);
|
||||
}
|
||||
|
||||
ip += 3;
|
||||
@@ -208,9 +217,14 @@ int lzo1x_1_compress(const unsigned char
|
||||
|
||||
*op++ = tt;
|
||||
}
|
||||
- do {
|
||||
- *op++ = *ii++;
|
||||
- } while (--t > 0);
|
||||
+ if (t >= 2 * 4) {
|
||||
+ memcpy(op, ii, t);
|
||||
+ op += t;
|
||||
+ ii += t;
|
||||
+ } else
|
||||
+ do {
|
||||
+ *op++ = *ii++;
|
||||
+ } while (--t > 0);
|
||||
}
|
||||
|
||||
*op++ = M4_MARKER | 1;
|
||||
@@ -224,4 +238,3 @@ EXPORT_SYMBOL_GPL(lzo1x_1_compress);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_DESCRIPTION("LZO1X-1 Compressor");
|
||||
-
|
||||
--- a/sub-projects/compression/lzo-kmod/lzo1x_decompress.c
|
||||
+++ b/sub-projects/compression/lzo-kmod/lzo1x_decompress.c
|
||||
@@ -45,10 +45,7 @@ int lzo1x_decompress_safe(const unsigned
|
||||
goto output_overrun;
|
||||
if (HAVE_IP(t + 1, ip_end, ip))
|
||||
goto input_overrun;
|
||||
- do {
|
||||
- *op++ = *ip++;
|
||||
- } while (--t > 0);
|
||||
- goto first_literal_run;
|
||||
+ goto prep_first_literal_run;
|
||||
}
|
||||
|
||||
while ((ip < ip_end)) {
|
||||
@@ -71,30 +68,27 @@ int lzo1x_decompress_safe(const unsigned
|
||||
if (HAVE_IP(t + 4, ip_end, ip))
|
||||
goto input_overrun;
|
||||
|
||||
- COPY4(op, ip);
|
||||
- op += 4;
|
||||
- ip += 4;
|
||||
- if (--t > 0) {
|
||||
- if (t >= 4) {
|
||||
- do {
|
||||
- COPY4(op, ip);
|
||||
- op += 4;
|
||||
- ip += 4;
|
||||
- t -= 4;
|
||||
- } while (t >= 4);
|
||||
- if (t > 0) {
|
||||
- do {
|
||||
- *op++ = *ip++;
|
||||
- } while (--t > 0);
|
||||
- }
|
||||
- } else {
|
||||
+ t += (4 - 1);
|
||||
+ if (t >= 2 * 4) {
|
||||
+ memcpy(op, ip, t);
|
||||
+ op += t;
|
||||
+ ip += t;
|
||||
+ } else {
|
||||
+ do {
|
||||
+ COPY4(op, ip);
|
||||
+ op += 4;
|
||||
+ ip += 4;
|
||||
+ t -= 4;
|
||||
+ } while (t >= 4);
|
||||
+ if (t > 0) {
|
||||
+prep_first_literal_run:
|
||||
do {
|
||||
*op++ = *ip++;
|
||||
} while (--t > 0);
|
||||
}
|
||||
}
|
||||
|
||||
-first_literal_run:
|
||||
+//first_literal_run:
|
||||
t = *ip++;
|
||||
if (t >= 16)
|
||||
goto match;
|
||||
@@ -139,8 +133,7 @@ match:
|
||||
t += 31 + *ip++;
|
||||
}
|
||||
m_pos = op - 1;
|
||||
- m_pos -= le16_to_cpu(get_unaligned(
|
||||
- (const unsigned short *)ip)) >> 2;
|
||||
+ m_pos -= get_unaligned_le16(ip) >> 2;
|
||||
ip += 2;
|
||||
} else if (t >= 16) {
|
||||
m_pos = op;
|
||||
@@ -158,8 +151,7 @@ match:
|
||||
}
|
||||
t += 7 + *ip++;
|
||||
}
|
||||
- m_pos -= le16_to_cpu(get_unaligned(
|
||||
- (const unsigned short *)ip)) >> 2;
|
||||
+ m_pos -= get_unaligned_le16(ip) >> 2;
|
||||
ip += 2;
|
||||
if (m_pos == op)
|
||||
goto eof_found;
|
||||
@@ -184,21 +176,33 @@ match:
|
||||
if (HAVE_OP(t + 3 - 1, op_end, op))
|
||||
goto output_overrun;
|
||||
|
||||
- if (t >= 2 * 4 - (3 - 1) && (op - m_pos) >= 4) {
|
||||
- COPY4(op, m_pos);
|
||||
- op += 4;
|
||||
- m_pos += 4;
|
||||
- t -= 4 - (3 - 1);
|
||||
- do {
|
||||
+ if (t >= 2 * 4 - (3 - 1)) {
|
||||
+ /*
|
||||
+ * Assume memcpy don't copy
|
||||
+ * more than 32 bytes at once
|
||||
+ */
|
||||
+ if ((op - m_pos) >= 32) {
|
||||
+ t += (3 - 1);
|
||||
+ memcpy(op, m_pos, t);
|
||||
+ op += t;
|
||||
+ m_pos += t;
|
||||
+ } else if ((op - m_pos) >= 4) {
|
||||
COPY4(op, m_pos);
|
||||
op += 4;
|
||||
m_pos += 4;
|
||||
- t -= 4;
|
||||
- } while (t >= 4);
|
||||
- if (t > 0)
|
||||
+ t -= 4 - (3 - 1);
|
||||
do {
|
||||
- *op++ = *m_pos++;
|
||||
- } while (--t > 0);
|
||||
+ COPY4(op, m_pos);
|
||||
+ op += 4;
|
||||
+ m_pos += 4;
|
||||
+ t -= 4;
|
||||
+ } while (t >= 4);
|
||||
+ if (t > 0)
|
||||
+ do {
|
||||
+ *op++ = *m_pos++;
|
||||
+ } while (--t > 0);
|
||||
+ } else
|
||||
+ goto copy_match;
|
||||
} else {
|
||||
copy_match:
|
||||
*op++ = *m_pos++;
|
||||
|
|
@ -1,10 +0,0 @@
|
|||
--- a/ramzswap_drv.c
|
||||
+++ b/ramzswap_drv.c
|
||||
@@ -23,6 +23,7 @@
|
||||
#include <linux/device.h>
|
||||
#include <linux/genhd.h>
|
||||
#include <linux/highmem.h>
|
||||
+#include <linux/slab.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/swap.h>
|
||||
#include <linux/swapops.h>
|
||||
|
|
@ -1,31 +0,0 @@
|
|||
Index: compcache-0.6.2/ramzswap_drv.c
|
||||
===================================================================
|
||||
--- compcache-0.6.2.orig/ramzswap_drv.c 2012-07-25 01:02:39.000000000 +0200
|
||||
+++ compcache-0.6.2/ramzswap_drv.c 2012-07-25 01:04:29.270750850 +0200
|
||||
@@ -525,7 +525,7 @@
|
||||
|
||||
if (S_ISBLK(inode->i_mode)) {
|
||||
bdev = I_BDEV(inode);
|
||||
- ret = bd_claim(bdev, setup_backing_swap);
|
||||
+ ret = blkdev_get(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL, setup_backing_swap);
|
||||
if (ret < 0) {
|
||||
bdev = NULL;
|
||||
goto bad_param;
|
||||
@@ -557,7 +557,7 @@
|
||||
|
||||
bad_param:
|
||||
if (bdev)
|
||||
- bd_release(bdev);
|
||||
+ blkdev_put(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
|
||||
filp_close(swap_file, NULL);
|
||||
|
||||
out:
|
||||
@@ -1097,7 +1097,7 @@
|
||||
/* Close backing swap device, if present */
|
||||
if (rzs->backing_swap) {
|
||||
if (is_backing_blkdev)
|
||||
- bd_release(rzs->backing_swap);
|
||||
+ blkdev_put(rzs->backing_swap, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
|
||||
filp_close(rzs->swap_file, NULL);
|
||||
rzs->backing_swap = NULL;
|
||||
memset(rzs->backing_swap_name, 0, MAX_SWAP_NAME_LEN);
|
||||
Loading…
Reference in New Issue