[Raspberry pi3] Missing kernel config for memory cgroups in 3.11

CONFIG_MEMCG=y is present in config-rpi4 BUT NOT in config-rpi.

Hence, cgroup_enable=memory cgroup_memory=1 has no effect in /media/mmcblk0p1/cmdline.txt.

Service cgroups is started.

Everything works in 3.10.4.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information