Messages in this thread | | | Date | Tue, 29 Mar 2016 00:24:43 -0700 | From | Christoph Hellwig <> | Subject | Re: [PATCH 1/3] blk-mq: add an API to estimate hardware queue node |
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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..
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