Re: [PATCH v5 01/17] perf: Add SNOOP_PEER flag to perf mem data struct

Leo Yan
2022-07-21T00:27:36Z

On Wed, Jul 20, 2022 at 03:46:49PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Wed, Jul 20, 2022 at 03:45:51PM -0300, Arnaldo Carvalho de Melo escreveu:
> > Em Sat, Jun 04, 2022 at 12:28:04PM +0800, Leo Yan escreveu:
> > > From: Ali Saidi <alisaidi@amazon.com>
> > >
> > > Add a flag to the perf mem data struct to signal that a request caused a
> > > cache-to-cache transfer of a line from a peer of the requestor and
> > > wasn't sourced from a lower cache level. The line being moved from one
> > > peer cache to another has latency and performance implications. On Arm64
> > > Neoverse systems the data source can indicate a cache-to-cache transfer
> > > but not if the line is dirty or clean, so instead of overloading HITM
> > > define a new flag that indicates this type of transfer.
> > >
> > > Signed-off-by: Ali Saidi <alisaidi@amazon.com>
> > > Reviewed-by: Leo Yan <leo.yan@linaro.org>
> > > Reviewed-by: Kajol Jain<kjain@linux.ibm.com>
> >
> > Hey, any knews about this going upstream? PeterZ?
>
> Just took a look and it isn't in tip/master.

Yeah, this patch is not picked by maintainers.

I confirmed that this patch can be applied cleanly on tip/master
branch. Peter.Z, could you pick this patch?

Thanks,
Leo