From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:51606 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727786AbeHIKLZ (ORCPT ); Thu, 9 Aug 2018 06:11:25 -0400 Date: Thu, 9 Aug 2018 09:47:46 +0200 From: Greg KH To: "Jin, Yao" Cc: Andi Kleen , stable@vger.kernel.org, "Jin, Yao" , "Liang, Kan" Subject: Re: perf: Support uncore in 4.9.112 Message-ID: <20180809074746.GA16350@kroah.com> References: <20180718092950.GD17551@kroah.com> <20180718170944.GF25412@tassilo.jf.intel.com> <20180718173955.GA1132@kroah.com> <89ce7147-3116-bb81-85a8-f97401c66a56@linux.intel.com> <20180807130934.GA14470@kroah.com> <20180808064001.GA23497@kroah.com> <7e63c7da-e883-04ab-abf7-6ccf87ff3a70@linux.intel.com> <20180808084049.GA24734@kroah.com> <6a28b118-e054-5be9-b224-0ec2c5e34949@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6a28b118-e054-5be9-b224-0ec2c5e34949@linux.intel.com> Sender: stable-owner@vger.kernel.org List-ID: On Thu, Aug 09, 2018 at 01:59:09PM +0800, Jin, Yao wrote: > > > On 8/8/2018 4:40 PM, Greg KH wrote: > > On Wed, Aug 08, 2018 at 03:37:54PM +0800, Jin, Yao wrote: > > > 182 files changed, 97061 insertions(+), 159 deletions(-) > > > > Look at that, 97 thousand lines added :( > > > > Yes, almost everything here is in tools/perf/ which leads me to ask why > > can't you just run a newer kernel's perf on 4.9 and have all of this > > support? Why do you need these in the stable 4.9 release in order for > > this to work properly? > > > > And as you can see here, that's really way too big for a stable kernel > > release, how can you justify it based on the stable kernel rules? > > > > thanks, > > > > greg k-h > > > > Yes, I agree, too much code here. :( > > And we can use 4.12+ perf tool in 4.9 kernel for using uncore though user > may mix the source trees for this. But anyway, this is a solution. What do you mean "mix the source trees"?