menuconfig ION bool "Ion Memory Manager" depends on HAVE_MEMBLOCK select GENERIC_ALLOCATOR select DMA_SHARED_BUFFER ---help--- Chose this option to enable the ION Memory Manager, used by Android to efficiently allocate buffers from userspace that can be shared between drivers. If you're not using Android its probably safe to say N here. config ION_TEST tristate "Ion Test Device" depends on ION help Choose this option to create a device that can be used to test the kernel and device side ION functions. config ION_TEGRA tristate "Ion for Tegra" depends on ARCH_TEGRA && ION help Choose this option if you wish to use ion on an nVidia Tegra. config ION_POOL_CACHE_POLICY bool "Ion set page pool cache policy" depends on ION default y if X86 help Choose this option if need to explicity set cache policy of the pages in the page pool.