IO_TLB_MIN_SLABS  209 drivers/xen/swiotlb-xen.c #define IO_TLB_MIN_SLABS ((1<<20) >> IO_TLB_SHIFT)
IO_TLB_MIN_SLABS   62 kernel/dma/swiotlb.c #define IO_TLB_MIN_SLABS ((1<<20) >> IO_TLB_SHIFT)