Re: [dpdk-dev] [PATCH] eal/ppc64: revert implement arch-specific TSC freq query

[Thomas Monjalon <thomas@monjalon.net>]

07/02/2018 08:05, Chao Zhu:
> The previous patch has some misunderstanding of the the TSC frequency
> counting.
> I support this.

Chao, it is very late in the release cycle.
Do you want to take the risk of applying this patch in 18.02-rc4?
If you discover a bug in this patch next week, it will be too late
for fixing it in 18.02.


> > -----Original Message-----
> > From: Thomas Monjalon [mailto:thomas@monjalon.net]
> > Sent: 2018年2月1日 8:30
> > To: Gowrishankar <gowrishankar.m@linux.vnet.ibm.com>; Chao Zhu
> > <chaozhu@linux.vnet.ibm.com>
> > Cc: dev@dpdk.org
> > Subject: Re: [dpdk-dev] [PATCH] eal/ppc64: revert implement arch-specific
> TSC
> > freq query
> > 
> > 30/01/2018 09:59, Gowrishankar:
> > > From: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
> > >
> > > This reverts commit 15692396fd68932b6a81f00f12d4b0da12baa7d3
> > > (eal/ppc64: implement arch-specific TSC freq query). We intended to
> > > derive pkt/sec estimation with cpu clock frequency. As timebase
> > > register serves the timer purpose, we need to stick with it for
> > > calculating pkt/sec, hence reverting the change.
> > >
> > > Fixes: 15692396fd (eal/ppc64: implement arch-specific TSC freq query)
> > 
> > It is not clear what it is fixing.
> > 
> > Chao, please review.
> 
>