[dpdk-dev] [dpdk-stable] [PATCH] config: enable packet prefetching with Meson

[Thomas Monjalon]

14/11/2020 09:51, Thomas Monjalon:
> 13/11/2020 16:05, Bruce Richardson:
> > On Fri, Nov 13, 2020 at 03:52:12PM +0100, Maxime Coquelin wrote:
> > > With Make build system, RTE_PMD_PACKET_PREFETCH was enabled
> > > by default. It got lost when transitioning to Meson build
> > > system.
> > > 
> > > In order to avoid performance changes, this patch enables
> > > packet prefetching in rte_config.h.
> > > 
> > > Reported-by: Marvin Liu <yong.liu at intel.com>
> > > Suggested-by: David Marchand <david.marchand at redhat.com>
> > > Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
[...]
> 
> Applied with backport info, thanks.

Note that it is added back for "compatibility",
but I am still in favour of dropping this config option,
replaced by arch decision if any:
http://inbox.dpdk.org/dev/3677226.MZCibFMyqQ@thomas/

The decision of such optimization should be done in DPDK project,
not in the hand of the packager.