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add compcache (#4481)

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SVN-Revision: 16988
This commit is contained in:
Florian Fainelli 2009-07-25 23:05:51 +00:00
parent f8f734eece
commit 397938cc0f
5 changed files with 316 additions and 0 deletions
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59
package/compcache/Makefile Normal file
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@ -0,0 +1,59 @@
#
# Copyright (C) 2006 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
# $Id: Makefile 6562 2009-01-21 11:19:24 ghd $
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=compcache
PKG_VERSION:=0.5
PKG_RELEASE:=$(PKG_VERSION)-1
PKG_SOURCE_URL:=http://compcache.googlecode.com/files/
PKG_MD5SUM:=eea73324e9e69178866f6c0fbc852f1f
#PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/$(PKG_NAME)
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
include $(INCLUDE_DIR)/package.mk
define KernelPackage/compcache
SUBMENU:=Other modules
DEPENDS:=@LINUX_2_6 @BUSYBOX_CONFIG_SWAPONOFF
TITLE:=Driver for compressed ram swap device
VERSION:=$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE)+$(PKG_RELEASE)
FILES:=$(PKG_BUILD_DIR)/compcache.$(LINUX_KMOD_SUFFIX) \
$(PKG_BUILD_DIR)/sub-projects/compression/lzo-kmod/lzo1x.$(LINUX_KMOD_SUFFIX) \
$(PKG_BUILD_DIR)/sub-projects/allocators/xvmalloc-kmod/xvmalloc.$(LINUX_KMOD_SUFFIX)
# AUTOLOAD:=$(call AutoLoad,10,xvmalloc lzo1x compcache+compcache_size_kbytes=2048)
endef
BUILDFLAGS:=-DCONFIG_BLK_DEV_COMPCACHE_DEBUG=0 \
-DCONFIG_BLK_DEV_COMPCACHE_STATS=1 \
-DCONFIG_XV_DEBUG=0 \
-DCONFIG_XV_STATS=1 \
-g -Wall
define Build/Compile
$(MAKE) -C "$(LINUX_DIR)" \
CROSS_COMPILE="$(KERNEL_CROSS)" \
CC="$(KERNEL_CC)" \
ARCH="$(LINUX_KARCH)" \
SUBDIRS="$(PKG_BUILD_DIR)" \
EXTRA_CFLAGS="$(BUILDFLAGS)" \
modules
endef
define KernelPackage/compcache/install
$(INSTALL_DIR) $(1)/etc/config
$(INSTALL_DATA) ./files/compcache.config $(1)/etc/config/compcache
$(INSTALL_DIR) $(1)/etc/init.d
$(INSTALL_BIN) ./files/compcache.init $(1)/etc/init.d/compcache
endef
$(eval $(call KernelPackage,compcache))

3
package/compcache/files/compcache.config Normal file
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@ -0,0 +1,3 @@
config compcache
option 'enabled' '0'
option 'size_kbytes' '2048'

39
package/compcache/files/compcache.init Normal file
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@ -0,0 +1,39 @@
#!/bin/sh /etc/rc.common
# Copyright (C) 2008 OpenWrt.org
START=19
load_modules() {
local section="$1"
config_get "size_kbytes" "$section" "size_kbytes"
config_get_bool "enabled" "$section" "enabled" '1'
if [ "$enabled" -gt 0 ]; then
if [ "`lsmod | grep 'compcache'`" != "" ]; then
echo "compcache allready loaded"
else
insmod xvmalloc
insmod lzo1x
insmod compcache compcache_size_kbytes=$size_kbytes
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 'compcache'`" != "" ] && rmmod compcache > /dev/null
[ "`lsmod | grep 'lzo1x'`" != "" ] && rmmod lzo1x > /dev/null
[ "`lsmod | grep 'xvmalloc'`" != "" ] && rmmod xvmalloc > /dev/null
fi
}
start() {
config_load "compcache"
config_foreach load_modules "compcache"
}
stop() {
config_load "compcache"
config_foreach remove_modules "compcache"
}

185
package/compcache/patches/001-lzo-speed.patch Normal file
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@ -0,0 +1,185 @@
diff -uNr compcache-0.5/sub-projects/compression/lzo-kmod/lzo1x_compress.c compcache-0.5/sub-projects/compression/lzo-kmod/lzo1x_compress.c
--- compcache-0.5/sub-projects/compression/lzo-kmod/lzo1x_compress.c 2008-08-13 06:33:34.000000000 +0200
+++ compcache-0.5/sub-projects/compression/lzo-kmod/lzo1x_compress.c 2009-01-21 08:00:35.000000000 +0100
@@ -62,8 +62,12 @@
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 @@
}
*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 @@
*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 @@
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("LZO1X-1 Compressor");
-
diff -uNr compcache-0.5/sub-projects/compression/lzo-kmod/lzo1x_decompress.c compcache-0.5/sub-projects/compression/lzo-kmod/lzo1x_decompress.c
--- compcache-0.5/sub-projects/compression/lzo-kmod/lzo1x_decompress.c 2008-08-13 06:33:42.000000000 +0200
+++ compcache-0.5/sub-projects/compression/lzo-kmod/lzo1x_decompress.c 2009-01-21 07:49:41.000000000 +0100
@@ -45,10 +45,7 @@
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)) {
@@ -71,23 +68,20 @@
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);
@@ -139,8 +133,7 @@
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 @@
}
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 @@
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++;
@@ -247,9 +251,7 @@
*out_len = op - out;
return LZO_E_LOOKBEHIND_OVERRUN;
}
-
EXPORT_SYMBOL_GPL(lzo1x_decompress_safe);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("LZO1X Decompressor");
-

30
package/compcache/patches/002-compact_lzo-codec.patch Normal file
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@ -0,0 +1,30 @@
--- compcache-0.5/Makefile.bak 2008-12-10 07:25:44.000000000 +0100
+++ compcache-0.5/Makefile 2009-01-21 08:25:38.000000000 +0100
@@ -4,15 +4,13 @@
-DCONFIG_XV_STATS \
-g -Wall
-obj-m += sub-projects/compression/lzo-kmod/lzo1x_decompress.o \
- sub-projects/compression/lzo-kmod/lzo1x_compress.o \
+obj-m += sub-projects/compression/lzo-kmod/lzo1x.o \
sub-projects/allocators/xvmalloc-kmod/xvmalloc.o \
compcache.o
all:
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
- @ln -sf sub-projects/compression/lzo-kmod/lzo1x_decompress.ko
- @ln -sf sub-projects/compression/lzo-kmod/lzo1x_compress.ko
+ @ln -sf sub-projects/compression/lzo-kmod/lzo1x.ko
@ln -sf sub-projects/allocators/xvmalloc-kmod/xvmalloc.ko
clean:
--- compcache-0.5/sub-projects/compression/lzo-kmod/lzo1x.c~ 1970-01-01 01:00:00.000000000 +0100
+++ compcache-0.5/sub-projects/compression/lzo-kmod/lzo1x.c 2008-05-06 09:38:12.000000000 +0200
@@ -0,0 +1,7 @@
+#include <linux/module.h>
+
+#include "lzo1x_compress.c"
+#include "lzo1x_decompress.c"
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("LZO1X Lib");