compcache: remove package, use zram-swap instead

SVN-Revision: 35026
owl
Hauke Mehrtens 2013-01-06 17:14:53 +00:00
parent bef592844b
commit 7a39e7860a
8 changed files with 0 additions and 1025 deletions

View File

@ -1,29 +0,0 @@
menu "Configuration"
depends on PACKAGE_compcache
config COMPCACHE_ENABLE
bool "enabled on boot"
default n
help
Enables compressed ram swap devices.
config COMPCACHE_RAM_REPORTED
string "swap space reported to kernel in kb"
default "2048"
help
This is the amount of memory that will be reported
to the kernel as swap. The real ram in use will differ,
because of lzo compression.
Example:
16 MB = 2048 KB
32 MB = 4098 KB
config COMPCACHE_BACKUP_DEV
string "Backup device for compcache"
default ""
help
Compcache will use this as a backup device for swap.
Example:
/dev/sda5
endmenu

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@ -1,75 +0,0 @@
#
# Copyright (C) 2009-2010 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=compcache
PKG_VERSION:=0.6.2
PKG_RELEASE:=2
PKG_SOURCE_URL:=http://compcache.googlecode.com/files/
PKG_MD5SUM:=27aec78dc50e34fb800c74e879057743
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
include $(INCLUDE_DIR)/package.mk
define KernelPackage/ramzswap
SUBMENU:=Other modules
DEPENDS:=@BUSYBOX_CONFIG_SWAPONOFF
TITLE:=Driver for compressed ram swap device
VERSION:=$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE)+$(PKG_RELEASE)
FILES:=$(PKG_BUILD_DIR)/ramzswap.ko \
$(PKG_BUILD_DIR)/sub-projects/compression/lzo-kmod/lzo1x.ko
URL:=http://code.google.com/p/compcache/
endef
define Package/compcache
SECTION:=util
CATEGORY:=Utilities
DEPENDS:=+kmod-ramzswap
TITLE:=Compressed ram swap device
URL:=http://code.google.com/p/compcache/
MENU:=1
endef
include $(INCLUDE_DIR)/kernel-defaults.mk
LZO = sub-projects/compression/lzo-kmod
RZSC = sub-projects/rzscontrol
BUILDFLAGS:=-DCONFIG_RAMZSWAP_STATS \
-I$(PKG_BUILD_DIR)/$(LZO) \
-Wall
RZSCFLAGS:=-I$(PKG_BUILD_DIR)/$(RZSC)/../include \
-I$(PKG_BUILD_DIR)/$(RZSC)/../..
define Build/Compile
$(MAKE) $(KERNEL_MAKEOPTS) EXTRA_CFLAGS="$(BUILDFLAGS)" M="$(PKG_BUILD_DIR)" modules
$(TARGET_CC) $(TARGET_CFLAGS) $(RZSCFLAGS) $(PKG_BUILD_DIR)/$(RZSC)/rzscontrol.c -o $(PKG_BUILD_DIR)/rzscontrol
endef
define Package/compcache/install
$(INSTALL_DIR) $(1)/etc/config
$(INSTALL_DATA) ./files/compcache.config $(1)/etc/config/compcache
$(SED) 's,%ENABLED%,$(if $(CONFIG_COMPCACHE_ENABLE),1,0),g' \
-e 's,%RAM_REPORTED%,$(call qstrip,$(CONFIG_COMPCACHE_RAM_REPORTED)),g' \
-e 's,%BACKUP_DEV%,$(call qstrip,$(CONFIG_COMPCACHE_BACKUP_DEV)),g' \
$(1)/etc/config/compcache
$(INSTALL_DIR) $(1)/etc/init.d
$(INSTALL_BIN) ./files/compcache.init $(1)/etc/init.d/compcache
$(INSTALL_DIR) $(1)/sbin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/rzscontrol $(1)/sbin/rzscontrol
endef
define Package/compcache/config
source "$(SOURCE)/Config.in"
endef
$(eval $(call BuildPackage,compcache))
$(eval $(call KernelPackage,ramzswap))

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@ -1,4 +0,0 @@
config compcache
option 'enabled' '%ENABLED%'
option 'size_kbytes' '%RAM_REPORTED%'
option 'backup_dev' '%BACKUP_DEV%'

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@ -1,48 +0,0 @@
#!/bin/sh /etc/rc.common
# Copyright (C) 2008 OpenWrt.org
START=14
load_modules() {
local section="$1"
config_get "size_kbytes" "$section" "size_kbytes"
config_get "backup_dev" "$section" "backup_dev"
#CC_PARAM_STR="memlimit_kb=$1 backing_dev=$BACKING_DEV"
config_get_bool "enabled" "$section" "enabled" '1'
if [ "$enabled" -gt 0 ]; then
if [ "`cat /proc/swaps | grep 'ramzswap0'`" != "" ]; then
echo "compcache already loaded"
else
if [ "$backup_dev" != "" ]; then
params_set="memlimit_kb=$size_kbytes backing_swap=$backup_dev"
else
params_set="disksize_kb=$size_kbytes"
fi
if [ "`lsmod | grep 'ramzswap'`" == "" ]; then
insmod lzo1x
insmod ramzswap $params_set
sleep 2
swapon /dev/ramzswap0
fi
fi
fi
}
remove_modules() {
local section="$1"
config_get_bool "enabled" "$section" "enabled" '1'
if [ "$enabled" -gt 0 ]; then
[ "`cat /proc/swaps | grep 'ramzswap0'`" != "" ] && swapoff /dev/ramzswap0
[ "`lsmod | grep 'ramzswap'`" != "" ] && rmmod ramzswap &> /dev/null
[ "`lsmod | grep 'lzo1x'`" != "" ] && rmmod lzo1x &> /dev/null
fi
}
start() {
config_load "compcache"
config_foreach load_modules "compcache"
}
stop() {
config_load "compcache"
config_foreach remove_modules "compcache"
}

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@ -1,647 +0,0 @@
--- a/Makefile
+++ b/Makefile
@@ -1,14 +1,17 @@
KERNEL_BUILD_PATH ?= "/lib/modules/$(shell uname -r)/build"
XVM = sub-projects/allocators/xvmalloc-kmod
+LZO = sub-projects/compression/lzo-kmod
EXTRA_CFLAGS := -DCONFIG_RAMZSWAP_STATS \
-Wall
-obj-m += ramzswap.o
+obj-m += ramzswap.o $(LZO)/lzo1x.o
ramzswap-objs := ramzswap_drv.o $(XVM)/xvmalloc.o
+
all:
make -C $(KERNEL_BUILD_PATH) M=$(PWD) modules
+ make -C $(KERNEL_BUILD_PATH) M=$(PWD)/$(LZO) modules
make -C sub-projects/rzscontrol
doc:
@@ -16,5 +19,6 @@ doc:
clean:
make -C $(KERNEL_BUILD_PATH) M=$(PWD) clean
+ make -C $(KERNEL_BUILD_PATH) M=$(PWD)/$(LZO) clean
make -C sub-projects/rzscontrol clean
@rm -rf *.ko
--- a/ramzswap_drv.c
+++ b/ramzswap_drv.c
@@ -23,13 +23,13 @@
#include <linux/device.h>
#include <linux/genhd.h>
#include <linux/highmem.h>
-#include <linux/lzo.h>
#include <linux/string.h>
#include <linux/swap.h>
#include <linux/swapops.h>
#include <linux/vmalloc.h>
#include <linux/version.h>
+#include "lzo.h"
#include "compat.h"
#include "ramzswap_drv.h"
--- /dev/null
+++ b/sub-projects/compression/lzo-kmod/lzo1x.c
@@ -0,0 +1,7 @@
+#include <linux/module.h>
+
+#include "lzo1x_compress.c"
+#include "lzo1x_decompress.c"
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("LZO1X Lib");
--- /dev/null
+++ b/sub-projects/compression/lzo-kmod/lzo1x_compress.c
@@ -0,0 +1,227 @@
+/*
+ * LZO1X Compressor 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/unaligned.h>
+
+#include "lzodefs.h"
+#include "lzo.h"
+
+static noinline size_t
+_lzo1x_1_do_compress(const unsigned char *in, size_t in_len,
+ unsigned char *out, size_t *out_len, void *wrkmem)
+{
+ const unsigned char * const in_end = in + in_len;
+ const unsigned char * const ip_end = in + in_len - M2_MAX_LEN - 5;
+ const unsigned char ** const dict = wrkmem;
+ const unsigned char *ip = in, *ii = ip;
+ const unsigned char *end, *m, *m_pos;
+ size_t m_off, m_len, dindex;
+ unsigned char *op = out;
+
+ ip += 4;
+
+ for (;;) {
+ dindex = ((size_t)(0x21 * DX3(ip, 5, 5, 6)) >> 5) & D_MASK;
+ m_pos = dict[dindex];
+
+ if (m_pos < in)
+ goto literal;
+
+ if (ip == m_pos || ((size_t)(ip - m_pos) > M4_MAX_OFFSET))
+ goto literal;
+
+ m_off = ip - m_pos;
+ if (m_off <= M2_MAX_OFFSET || m_pos[3] == ip[3])
+ goto try_match;
+
+ dindex = (dindex & (D_MASK & 0x7ff)) ^ (D_HIGH | 0x1f);
+ m_pos = dict[dindex];
+
+ if (m_pos < in)
+ goto literal;
+
+ if (ip == m_pos || ((size_t)(ip - m_pos) > M4_MAX_OFFSET))
+ goto literal;
+
+ m_off = ip - m_pos;
+ if (m_off <= M2_MAX_OFFSET || m_pos[3] == ip[3])
+ goto try_match;
+
+ goto literal;
+
+try_match:
+ if (get_unaligned((const unsigned short *)m_pos)
+ == get_unaligned((const unsigned short *)ip)) {
+ if (likely(m_pos[2] == ip[2]))
+ goto match;
+ }
+
+literal:
+ dict[dindex] = ip;
+ ++ip;
+ if (unlikely(ip >= ip_end))
+ break;
+ continue;
+
+match:
+ dict[dindex] = ip;
+ if (ip != ii) {
+ size_t t = ip - ii;
+
+ 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);
+ }
+
+ ip += 3;
+ if (m_pos[3] != *ip++ || m_pos[4] != *ip++
+ || m_pos[5] != *ip++ || m_pos[6] != *ip++
+ || m_pos[7] != *ip++ || m_pos[8] != *ip++) {
+ --ip;
+ m_len = ip - ii;
+
+ if (m_off <= M2_MAX_OFFSET) {
+ m_off -= 1;
+ *op++ = (((m_len - 1) << 5)
+ | ((m_off & 7) << 2));
+ *op++ = (m_off >> 3);
+ } else if (m_off <= M3_MAX_OFFSET) {
+ m_off -= 1;
+ *op++ = (M3_MARKER | (m_len - 2));
+ goto m3_m4_offset;
+ } else {
+ m_off -= 0x4000;
+
+ *op++ = (M4_MARKER | ((m_off & 0x4000) >> 11)
+ | (m_len - 2));
+ goto m3_m4_offset;
+ }
+ } else {
+ end = in_end;
+ m = m_pos + M2_MAX_LEN + 1;
+
+ while (ip < end && *m == *ip) {
+ m++;
+ ip++;
+ }
+ m_len = ip - ii;
+
+ 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
+

View File

@ -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++;

View File

@ -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>

View File

@ -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);