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Switch to a memory efficient hardened_malloc variant

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This should help 64-bit devices with <4GB RAM substantially, at reduced hardening.

clark for example only has 2.5GB of usable memory and idles at 1.6GB used.
After this change, idle usage drops to 1.1GB!

Signed-off-by: Tad <tad@spotco.us>
This commit is contained in:
Tad 2022-08-02 19:44:57 -04:00
parent 178f01958d
commit a00fa2349e
2 changed files with 10 additions and 0 deletions
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9
Scripts/Common/Optimize.sh
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@ -23,6 +23,15 @@ source "$DOS_SCRIPTS_COMMON/Shell.sh";
echo "Optimizing...";
if [ "$DOS_GRAPHENE_MALLOC_MEMORY_EFFICIENT" = true ]; then
if enter "external/hardened_malloc"; then
#Taken from upstream's light variant
sed -i 's/SLAB_QUARANTINE_RANDOM_LENGTH=1/SLAB_QUARANTINE_RANDOM_LENGTH=0/' Android.bp;
sed -i 's/SLAB_QUARANTINE_QUEUE_LENGTH=1/SLAB_QUARANTINE_QUEUE_LENGTH=0/' Android.bp;
sed -i 's/GUARD_SLABS_INTERVAL=1/GUARD_SLABS_INTERVAL=8/' Android.bp;
fi;
fi;
if enter "frameworks/base"; then
sed -i 's/ScaleSetting = 1.0f;/ScaleSetting = 0.5f;/' services/java/com/android/server/wm/WindowManagerService.java &>/dev/null || true;
sed -i 's/AnimationScale = 1.0f;/AnimationScale = 0.5f;/' services/java/com/android/server/wm/WindowManagerService.java &>/dev/null || true;

1
Scripts/init.sh
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@ -61,6 +61,7 @@ export DOS_GPS_GLONASS_FORCED=false; #Enables GLONASS on all devices
export DOS_GRAPHENE_BIONIC=true; #Enables the bionic hardening patchset on 16.0+17.1+18.1+19.1
export DOS_GRAPHENE_CONSTIFY=true; #Enables 'Constify JNINativeMethod tables' patchset on 16.0+17.1+18.1+19.1
export DOS_GRAPHENE_MALLOC=true; #Enables use of GrapheneOS' hardened memory allocator on 64-bit platforms on 16.0+17.1+18.1+19.1
export DOS_GRAPHENE_MALLOC_MEMORY_EFFICIENT=true; #Disables slab quarantines and raises the guard slab interval from 1 to 8 to reduce memory usage at cost of reduced hardening
export DOS_GRAPHENE_EXEC=true; #Enables use of GrapheneOS' exec spawning feature on 16.0+17.1+18.1+19.1
export DOS_HOSTS_BLOCKING=true; #Set false to prevent inclusion of a HOSTS file
export DOS_HOSTS_BLOCKING_LIST="https://divested.dev/hosts-wildcards"; #Must be in the format "127.0.0.1 bad.domain.tld"