[dpdk-dev] [RFC PATCH 0/2] Fix examples/distributor build issue for non x86

[Jerin Jacob]

On Fri, Jan 29, 2016 at 08:03:37AM -0700, Bruce Richardson wrote:
> On Fri, Jan 29, 2016 at 08:51:41AM +0530, Jerin Jacob wrote:
> > On Sun, Dec 06, 2015 at 08:54:28PM +0530, Jerin Jacob wrote:
> > > Introduced rte_prefetch_non_temporal() to remove IA specific _mm_prefect(addr, 0)
> > > gcc intrinsic and build examples/distributor for non 86 platform
> > 
> > ping for review.
> > 
> 
> Is there much performance difference between making this a prefetch NT vs making
> it an rte_prefetch0 on the platforms you have tested?

Not much difference. But, I think its worth keep the abstraction as
IA and arm64 architecture supports it.

Jerin

> 
> /Bruce
> 
> > > 
> > > Not sure the rte_prefetch_non_temporal mapping correct for
> > > all the platforms. Architecture maintainers please check the mapping for
> > > rte_prefetch_non_temporal() for specific architecures
> > > 
> > > Jerin Jacob (2):
> > >   eal: introduce rte_prefetch_non_temporal
> > >   examples/distributor: remove IA specific __mm_prefetch
> > > 
> > >  examples/distributor/main.c                              |  9 +++++----
> > >  lib/librte_eal/common/include/arch/arm/rte_prefetch_32.h |  5 +++++
> > >  lib/librte_eal/common/include/arch/arm/rte_prefetch_64.h |  5 +++++
> > >  lib/librte_eal/common/include/arch/ppc_64/rte_prefetch.h |  5 +++++
> > >  lib/librte_eal/common/include/arch/tile/rte_prefetch.h   |  5 +++++
> > >  lib/librte_eal/common/include/arch/x86/rte_prefetch.h    |  5 +++++
> > >  lib/librte_eal/common/include/generic/rte_prefetch.h     | 12 ++++++++++++
> > >  7 files changed, 42 insertions(+), 4 deletions(-)
> > > 
> > > --
> > > 2.1.0
> > >