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zram-swap: sync upstream source (#6930)

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AmadeusGhost 2021-06-05 10:32:05 +08:00 committed by GitHub
parent 9ae00955cc
commit eb1e8ce8f8
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2 changed files with 24 additions and 28 deletions
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14
package/system/zram-swap/Makefile
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=zram-swap
PKG_VERSION:=1.1
PKG_RELEASE:=6
PKG_RELEASE:=8
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
@ -18,14 +18,20 @@ include $(INCLUDE_DIR)/package.mk
define Package/zram-swap
SECTION:=utils
CATEGORY:=Base system
DEPENDS:=+kmod-zram +!(BUSYBOX_CONFIG_MKSWAP&&BUSYBOX_CONFIG_SWAPON&&BUSYBOX_CONFIG_SWAPOFF):swap-utils
DEPENDS:= \
+@BUSYBOX_CONFIG_FEATURE_SWAPON_DISCARD \
+@BUSYBOX_CONFIG_FEATURE_SWAPON_PRI \
+@BUSYBOX_CONFIG_MKSWAP \
+@BUSYBOX_CONFIG_SWAPOFF \
+@BUSYBOX_CONFIG_SWAPON \
+kmod-zram
TITLE:=ZRAM swap scripts
PKGARCH:=all
endef
define Package/zram-swap/description
A script to activate swaping on a compressed zram partition. This
could be used to increase the available memory, by using compressed
A script to activate swaping on a compressed zram partition. This
could be used to increase the available memory, by using compressed
memory.
endef

38
package/system/zram-swap/files/zram.init
View File

@ -35,18 +35,18 @@ zram_applicable()
return 1
}
command -v mkswap >/dev/null || {
logger -s -t zram_applicable -p daemon.err "[ERROR] 'mkswap' not installed"
[ -x /sbin/mkswap ] || {
logger -s -t zram_applicable -p daemon.err "[ERROR] 'BusyBox mkswap' not installed"
return 1
}
command -v swapon >/dev/null || {
logger -s -t zram_applicable -p daemon.err "[ERROR] 'swapon' not installed"
[ -x /sbin/swapon ] || {
logger -s -t zram_applicable -p daemon.err "[ERROR] 'BusyBox swapon' not installed"
return 1
}
command -v swapoff >/dev/null || {
logger -s -t zram_applicable -p daemon.err "[ERROR] 'swapoff' not installed"
[ -x /sbin/swapoff ] || {
logger -s -t zram_applicable -p daemon.err "[ERROR] 'BusyBox swapoff' not installed"
return 1
}
}
@ -97,19 +97,6 @@ zram_comp_algo()
fi
}
zram_comp_streams()
{
local dev="$1"
local logical_cpus=$( grep -ci "^processor" /proc/cpuinfo )
[ $logical_cpus -gt 1 ] || return 1
local zram_comp_streams="$( uci -q get system.@system[0].zram_comp_streams )"
[ -n "$zram_comp_streams" ] && [ "$zram_comp_streams" -le "$logical_cpus" ] || zram_comp_streams=$logical_cpus
if [ -e /sys/block/$( basename $dev )/max_comp_streams ]; then
logger -s -t zram_comp_streams -p daemon.debug "Set max compression streams to '$zram_comp_streams' for zram '$dev'"
echo $zram_comp_streams > /sys/block/$( basename $dev )/max_comp_streams
fi
}
#print various stats info about zram swap device
zram_stats()
{
@ -121,7 +108,6 @@ zram_stats()
printf "%-25s - %s\n" "Block device" $zdev
awk '{ printf "%-25s - %d MiB\n", "Device size", $1/1024/1024 }' <$zdev/disksize
printf "%-25s - %s\n" "Compression algo" "$(cat $zdev/comp_algorithm)"
printf "%-25s - %s\n" "Compression streams" "$( cat $zdev/max_comp_streams)"
awk 'BEGIN { fmt = "%-25s - %.2f %s\n"
fmt2 = "%-25s - %d\n"
@ -164,6 +150,11 @@ zram_compact()
start()
{
[ -e /proc/swaps ] || {
logger -s -t zram_start -p daemon.crit "kernel doesn't support swap"
return 1
}
if [ $( grep -cs zram /proc/swaps ) -ne 0 ]; then
logger -s -t zram_start -p daemon.notice "[OK] zram swap is already mounted"
return 1
@ -179,10 +170,9 @@ start()
zram_reset "$zram_dev" "enforcing defaults"
zram_comp_algo "$zram_dev"
zram_comp_streams "$zram_dev"
echo $(( $zram_size * 1024 * 1024 )) >"/sys/block/$( basename "$zram_dev" )/disksize"
mkswap "$zram_dev"
swapon -d $zram_priority "$zram_dev"
/sbin/mkswap "$zram_dev"
/sbin/swapon -d $zram_priority "$zram_dev"
}
stop()
@ -191,7 +181,7 @@ stop()
for zram_dev in $( grep zram /proc/swaps |awk '{print $1}' ); do {
logger -s -t zram_stop -p daemon.debug "deactivate swap $zram_dev"
swapoff "$zram_dev" && zram_reset "$zram_dev" "claiming memory back"
/sbin/swapoff "$zram_dev" && zram_reset "$zram_dev" "claiming memory back"
local dev_index="$( echo $zram_dev | grep -o "[0-9]*$" )"
if [ $dev_index -ne 0 ]; then
logger -s -t zram_stop -p daemon.debug "removing zram $zram_dev"