From: Ka-Cheong Poon <ka-cheong.p...@oracle.com> Date: Wed, 2 Oct 2019 21:11:08 -0700
> Currently, RDS calls ib_dma_alloc_coherent() to allocate a large piece > of contiguous DMA coherent memory to store struct rds_header for > sending/receiving packets. The memory allocated is then partitioned > into struct rds_header. This is not necessary and can be costly at > times when memory is fragmented. Instead, RDS should use the DMA > memory pool interface to handle this. The DMA addresses of the pre- > allocated headers are stored in an array. At send/receive ring > initialization and refill time, this arrary is de-referenced to get > the DMA addresses. This array is not accessed at send/receive packet > processing. > > Suggested-by: Håkon Bugge <haakon.bu...@oracle.com> > Signed-off-by: Ka-Cheong Poon <ka-cheong.p...@oracle.com> > Acked-by: Santosh Shilimkar <santosh.shilim...@oracle.com> Applied.
