added my Recipes

meta-openembedded/meta-oe/recipes-extended/zram/zram/dev-zram0.swap

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+[Unit]
+Description=Enable compressed swap in memory using zram
+Requires=zram-swap.service
+After=zram-swap.service
+
+[Swap]
+What=/dev/zram0
+
+[Install]
+WantedBy=swap.target

meta-openembedded/meta-oe/recipes-extended/zram/zram/init

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+#!/bin/sh
+### BEGIN INIT INFO
+# Provides: zram
+# Required-Start:
+# Required-Stop:
+# Default-Start: 2 3 4 5
+# Default-Stop: 0 1 6
+# Short-Description: Increased Performance In Linux With zRam (Virtual Swap Compressed in RAM)
+# Description: Adapted from systemd scripts at https://github.com/mystilleef/FedoraZram
+# Included as part of antix-goodies package by anticapitalista <antiX@operamail.com>
+# This script was written by tradetaxfree and is found at http://crunchbanglinux.org/forums/topic/15344/zram-a-good-idea/
+# Copy this script (as root) from /usr/local/bin to /etc/init.d and then #update-rc.d zram defaults
+# After booting verify the module is loaded with: lsmod | grep zram
+### END INIT INFO
+set -e
+
+start() {
+    # get the number of CPUs
+    num_cpus=$(grep -c processor /proc/cpuinfo)
+    # if something goes wrong, assume we have 1
+    [ "$num_cpus" != 0 ] || num_cpus=1
+
+    # set decremented number of CPUs
+    last_cpu=$((num_cpus - 1))
+
+    #default Factor % = 90 change this value here or create /etc/default/zram
+    FACTOR=90
+    #& put the above single line in /etc/default/zram with the value you want
+    [ -f /etc/default/zram ] && . /etc/default/zram || true
+    factor=$FACTOR # percentage
+
+    # get the amount of memory in the machine
+    memtotal=$(grep MemTotal /proc/meminfo | awk ' { print $2 } ')
+    mem_by_cpu=$(($memtotal/$num_cpus*$factor/100*1024))
+
+    # load dependency modules
+    modprobe zram num_devices=$num_cpus
+    echo "zram devices probed successfully"
+
+    # initialize the devices
+    for i in $(seq 0 $last_cpu); do
+    	echo 1 > /sys/block/zram$i/reset
+    	echo $mem_by_cpu > /sys/block/zram$i/disksize
+    	# Creating swap filesystems
+    	mkswap /dev/zram$i
+    	# Switch the swaps on
+    	swapon -p 100 /dev/zram$i
+    done
+}
+
+stop() {
+    # get the number of CPUs
+    num_cpus=$(grep -c processor /proc/cpuinfo)
+
+    # set decremented number of CPUs
+    last_cpu=$((num_cpus - 1))
+
+    # Switching off swap
+    for i in $(seq 0 $last_cpu); do
+    	if [ "$(grep /dev/zram$i /proc/swaps)" != "" ]; then
+    		swapoff /dev/zram$i
+    		sleep 1
+    	fi
+    done
+    sleep 1
+    rmmod zram
+}
+
+case "$1" in
+    start)
+        start
+        ;;
+    stop)
+        stop
+        ;;
+    restart)
+        stop
+        sleep 3
+        start
+        ;;
+    *)
+        echo "Usage: $0 {start|stop|restart}"
+        RETVAL=1
+esac
+exit $RETVAL

meta-openembedded/meta-oe/recipes-extended/zram/zram/zram-swap-deinit

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+#!/bin/sh
+set -e
+
+device=$1
+if [ "$device" = "" ]; then
+    echo "Usage: zram-swap-deinit <device>"
+    exit 1
+fi
+
+sysblockdev=/sys/block/$(basename $device)
+if [ ! -d $sysblockdev ]; then
+    echo "Block device not found in sysfs"
+    exit 1
+fi
+
+# zramctl -r is not suitable as it also removes the actual device. Recreating
+# it is non-trivial, especially if not /dev/zram0 is used...
+echo 1 > ${sysblockdev}/reset
+

meta-openembedded/meta-oe/recipes-extended/zram/zram/zram-swap-init

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+#!/bin/sh
+set -e
+
+device=$1
+if [ "$device" = "" ]; then
+    echo "Usage: zram-swap-init <device>"
+    exit 1
+fi
+
+# Allocate zram to be size of actual system memory
+# Note: zram is only allocated when used. When swapped pages compress with a
+# a 2:1 ratio zram will require 50% of system memory (while allowing to use
+# 150% memory).
+ZRAM_SIZE_PERCENT=100
+ZRAM_ALGORITHM=lz4
+
+[ -f /etc/default/zram ] && . /etc/default/zram || true
+
+memtotal=$(grep MemTotal /proc/meminfo | awk ' { print $2 } ')
+memzram=$(($memtotal*${ZRAM_SIZE_PERCENT}/100))
+
+# Try loading zram module
+modprobe -q zram || true
+
+zramctl -a ${ZRAM_ALGORITHM} -s ${memzram}KB $device
+mkswap -L "zram-swap" $device
+
+devname="${device##*/}"
+if [ ! -z ${ZRAM_SIZE_LIMIT+x} ]; then
+	echo ${ZRAM_SIZE_LIMIT} > /sys/block/$devname/mem_limit
+fi

meta-openembedded/meta-oe/recipes-extended/zram/zram/zram-swap.service

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+[Unit]
+Description=Create compressed swap in memory using zram
+DefaultDependencies=no
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+TimeoutStartSec=30sec
+ExecStart=@LIBEXECDIR@/zram-swap-init /dev/zram0
+ExecStop=@LIBEXECDIR@/zram-swap-deinit /dev/zram0

meta-openembedded/meta-oe/recipes-extended/zram/zram/zramstop

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+#!/bin/sh
+
+for i in $(grep '^/dev/zram' /proc/swaps | awk '{ print $1 }'); do
+	swapoff "$i" && zramctl --reset "$i"
+done

meta-openembedded/meta-oe/recipes-extended/zram/zram_0.2.bb

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+SUMMARY = "Linux zram compressed in-memory swap"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
+
+inherit update-rc.d systemd
+
+RDEPENDS:${PN} = "kmod \
+    ${@bb.utils.contains('DISTRO_FEATURES','systemd','util-linux','util-linux-swaponoff',d)}"
+RRECOMMENDS:${PN} = "kernel-module-zram"
+
+PR = "r3"
+
+SRC_URI = " \
+           file://init \
+           file://zram-swap-init \
+           file://zram-swap-deinit \
+           file://zram-swap.service \
+           file://dev-zram0.swap \
+"
+
+do_install () {
+    # Install systemd related configuration file
+    if ${@bb.utils.contains('DISTRO_FEATURES', 'sysvinit', 'true', 'false', d)}; then
+        install -d ${D}${sysconfdir}/init.d
+        install -m 0755 ${WORKDIR}/init ${D}${sysconfdir}/init.d/zram
+    fi
+
+    if ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', 'true', 'false', d)}; then
+        install -d ${D}${libexecdir}
+        install -m 0755 ${WORKDIR}/zram-swap-init ${D}${libexecdir}
+        install -m 0755 ${WORKDIR}/zram-swap-deinit ${D}${libexecdir}
+        install -d ${D}${systemd_unitdir}/system
+        install -m 0644 ${WORKDIR}/zram-swap.service ${D}${systemd_unitdir}/system/zram-swap.service
+        sed -i -e "s,@LIBEXECDIR@,${libexecdir},g" ${D}${systemd_unitdir}/system/zram-swap.service
+        install -m 0644 ${WORKDIR}/dev-zram0.swap ${D}${systemd_unitdir}/system/dev-zram0.swap
+    fi
+}
+
+FILES:${PN} = " \
+    ${sysconfdir} \
+    ${systemd_unitdir} \
+    ${libexecdir} \
+"
+INITSCRIPT_NAME = "zram"
+INITSCRIPT_PARAMS = "start 05 2 3 4 5 . stop 22 0 1 6 ."
+
+RPROVIDES:${PN} += "${PN}-systemd"
+RREPLACES:${PN} += "${PN}-systemd"
+RCONFLICTS:${PN} += "${PN}-systemd"
+SYSTEMD_SERVICE:${PN} = "dev-zram0.swap"