On Sat, Sep 01, 2018 at 12:48:46AM +0200, Thomas Gleixner wrote: > > We want some changes in current API which can allow us to pass flags > > (like *local numa affinity*) and cpu-msix mapping are from local numa node > > + effective cpu are spread across local numa node. > > What you really want is to split the vector space for your device into two > blocks. One for the regular per cpu queues and the other (16 or how many > ever) which are managed separately, i.e. spread out evenly. That needs some > extensions to the core allocation/management code, but that shouldn't be a > huge problem. Note that there are some other uses cases for multiple sets of affinity managed irqs. Various network devices insist on having separate TX vs RX interrupts for example.
