[dpdk-dev] [PATCH] eal: support using 0 as coremask for no-affinitization

Stephen Hemminger stephen at networkplumber.org
Wed Apr 14 18:29:38 CEST 2021


On Wed, 14 Apr 2021 18:15:34 +0200
David Marchand <david.marchand at redhat.com> wrote:

> On Tue, Feb 16, 2021 at 10:52 AM Bruce Richardson
> <bruce.richardson at intel.com> wrote:
> >
> > On Tue, Feb 16, 2021 at 09:43:00AM +0000, Bruce Richardson wrote:  
> > > Allow the user to specify that they don't want any core pinning from DPDK
> > > by passing in the coremask of 0.
> > > ---  
> >
> > Apologies, missed my signoff, will add in V2, but will wait for feedback on
> > this V1 first.  
> 
> I did not see a v2, is this still for 21.05?
> 
> What are the usecases for this feature?
> I could think of using this in combination with external threads in
> applications like OVS... ?
> 
> 

It would cause lots of DPDK applications to discover the problems with
preemption and priority inversion with DPDK spinlocks...


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