On Wed, Apr 14, 2021 at 09:29:38AM -0700, Stephen Hemminger wrote: > On Wed, 14 Apr 2021 18:15:34 +0200 > David Marchand <[email protected]> wrote: > > > On Tue, Feb 16, 2021 at 10:52 AM Bruce Richardson > > <[email protected]> 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...
I'd actually be surprised. I would expect most apps that want this sort of thing are already just using a single master core (perhaps with faked EAL args) and adding their own threads on top of that. All this patch would do is remove the requirement for that master lcore. /Bruce
