[openwrt/openwrt] zram-swap: remove the compression streams settings

[LEDE Commits]

aparcar pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/116191eddf9d8ddba61de788824dea442b265936

commit 116191eddf9d8ddba61de788824dea442b265936
Author: Rui Salvaterra <rsalvaterra at gmail.com>
AuthorDate: Mon Oct 19 19:21:13 2020 +0100

    zram-swap: remove the compression streams settings
    
    Zram switched to per-cpu compression streams since Linux 4.7 [1]. Drop the
    irrelevant configuration (no-op).
    
    [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/block/zram?h=v4.7&id=43209ea2d17aae1540d4e28274e36404f72702f2
    
    Signed-off-by: Rui Salvaterra <rsalvaterra at gmail.com>
---
 package/system/zram-swap/files/zram.init | 15 ---------------
 1 file changed, 15 deletions(-)

diff --git a/package/system/zram-swap/files/zram.init b/package/system/zram-swap/files/zram.init
index c6b7ae89c2..685648aae5 100755
--- a/package/system/zram-swap/files/zram.init
+++ b/package/system/zram-swap/files/zram.init
@@ -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. at 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"
@@ -179,7 +165,6 @@ 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 "$zram_dev" )/disksize"
 	/sbin/mkswap "$zram_dev"
 	/sbin/swapon -d $zram_priority "$zram_dev"