potter: init: set dalvik heap props based on detected RAM size

init/init_potter.cpp

@@ -27,7 +27,9 @@
    IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <fcntl.h>
 #include <stdlib.h>
+#include <sys/sysinfo.h>
 
 #include "vendor_init.h"
 #include "property_service.h"
@@ -49,6 +51,7 @@ void num_sims() {
 
 void vendor_load_properties()
 {
+    struct sysinfo sys;
     std::string platform = property_get("ro.board.platform");
 
     if (platform != ANDROID_TARGET)
@@ -74,5 +77,27 @@ void vendor_load_properties()
         property_set("ro.hw.ecompass", "false");
         property_set("ro.hw.nfc", "true");
     }
+
+    sysinfo(&sys);
+
+    if (sys.totalram > 3072ull * 1024 * 1024) {
+        property_set("dalvik.vm.heapstartsize", "8m");
+        property_set("dalvik.vm.heapgrowthlimit", "384m");
+        property_set("dalvik.vm.heapsize", "1024m");
+        property_set("dalvik.vm.heapminfree", "4m");
+        property_set("dalvik.vm.heapmaxfree", "16m");
+    } else if (sys.totalram > 2048ull * 1024 * 1024) {
+        property_set("dalvik.vm.heapstartsize", "8m");
+        property_set("dalvik.vm.heapgrowthlimit", "288m");
+        property_set("dalvik.vm.heapsize", "768m");
+        property_set("dalvik.vm.heapminfree", "512k");
+        property_set("dalvik.vm.heapmaxfree", "8m");
+    } else {
+        property_set("dalvik.vm.heapstartsize", "16m");
+        property_set("dalvik.vm.heapgrowthlimit", "192m");
+        property_set("dalvik.vm.heapsize", "512m");
+        property_set("dalvik.vm.heapminfree", "2m");
+        property_set("dalvik.vm.heapmaxfree", "8m");
+   }
 }
 

system.prop

@@ -77,11 +77,6 @@ ro.core_ctl_max_cpu=4
 ro.core_ctl_min_cpu=2
 
 # Dalvik
-dalvik.vm.heapgrowthlimit=192m
-dalvik.vm.heapmaxfree=8m
-dalvik.vm.heapminfree=512k
-dalvik.vm.heapsize=384m
-dalvik.vm.heapstartsize=8m
 dalvik.vm.heaptargetutilization=0.75
 
 # Display