linux-kernel - Re: [PATCH V8 08/25] perf tools: Add Intel BTS support

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Message-ID: <20150821141831.GA30343@kernel.org>
Date:	Fri, 21 Aug 2015 11:18:31 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Adrian Hunter <adrian.hunter@...el.com>
Cc:	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
	Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH V8 08/25] perf tools: Add Intel BTS support

Em Thu, Aug 20, 2015 at 11:53:45AM +0300, Adrian Hunter escreveu:
> On 18/08/15 19:10, Arnaldo Carvalho de Melo wrote:
> > Works for you if you test in lockstep the tooling with the kernel
> > sources, right? It works for me as well, if I use the latest tip/master
> > tooling _and_ kernel, my report was for using the 4.2.0-rc latest for
> > the kernel and the tooling in tip/master.
> > 
> > I think this would be just a matter of having a better message, or
> > perhaps some fix that we need to send to the stable@...nel.org guys, so
> > that the new tooling works with a slightly older kernel.
> > 
> > Anyway, consider looking at that perf.data file that I fixed the
> > permissions on vger, and I will look at the fix you mentioned in another
> > message.
> 
> With your perf.data file I was able to find the problem.  I have sent patch
> "perf tools: Fix Intel BTS/PT timestamp handling" to fix it.

Great, I just tested, without the patch it works in a machine with a new
kernel, with an older kernel, where it was failing, after I apply this
patch it works.

Thanks,

- Arnaldo
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