[dpdk-dev] [PATCH 0/2] fix performance/cache resource issues with 128-byte cache line targets

Thomas Monjalon thomas.monjalon at 6wind.com
Mon Dec 7 15:35:58 CET 2015


2015-12-07 20:03, Jerin Jacob:
> On Mon, Dec 07, 2015 at 03:40:13AM -0800, Thomas Monjalon wrote:
> > 2015-12-07 12:56, Jerin Jacob:
> > > On Sun, Dec 06, 2015 at 05:30:50PM +0100, Thomas Monjalon wrote:
> > > > 2015-12-06 21:29, Jerin Jacob:
> > > > > This patchset fixes performance/cache resource issues with 128-byte cache line targets
> > > > > found in mbuf and bitmap DPDK libraries
> > > > > 
> > > > > Currently, we have two DPDK targets(ThunderX and ppc_64) which are based on
> > > > > 128-bytes cache line size target.
> > > > 
> > > > When introducing IBM Power8, we failed to clean the cache line size definition.
> > > > I promised to not forget this issue in this thread with Neil:
> > > > 	http://dpdk.org/ml/archives/dev/2014-December/009439.html
> > > > 
> > > > It is defined in
> > > > 	config/defconfig_*
> > > > 	mk/machine/*/rte.vars.mk
> > > > 	mk/arch/*/rte.vars.mk
> > > > 	rte_memory.h
> > > > 	rte_kni_common.h
> > > > 
> > > > It should be defined only in the config files.
> > > > When we will introduce a configure script, we should be able to detect it.
> > > > 
> > > > Please Jerin, as ThunderX maintainer, may you help to fix this old mess?
> > > 
> > > Yes Thomas, I will takeup this issue when we will have configure script.
> > 
> > I thought we could start setting the value in only one place.
> > The detection in configure script would be another step.
> 
> OK Thomas, I have sent the cleanup patch. Please review it.

You are too fast :)
I will review it but it will be deferred to 2.3.


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