On Fri, Mar 25, 2016 at 02:36:30PM -0700, Shaohua Li wrote: > we allocate most data structure in device's node, but some data > structures are not for DMA and mostly used by specific cpus/node which > could diff from device's node. Allocating such hot data in device's > node doesn't make sense. Add an API to estimate hardware queue node. > This can be used before blk-mq actually establishes the mapping. This > API runs slow, but it only used in initialization time.
I think this is the wrong way around. I've got some proprotype code that just leaves the cpu assignments to the drivers and picks it up in blk-mq. Give me a few days to post it..
