Re: perf: Support uncore in 4.9.112

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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"?



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