Re: [GIT PULL 0/8] perf/pt -> Intel PT/BTS

From	Ingo Molnar <mingo@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [GIT PULL 0/8] perf/pt -> Intel PT/BTS
Date	2015-07-02 11:30 +0200
Message-ID	<pHIYH-QJ-35@gated-at.bofh.it> (permalink)
References	(2 earlier) <pGYCu-3Yv-11@gated-at.bofh.it> <pH1qH-80t-21@gated-at.bofh.it> <pH3LQ-39x-13@gated-at.bofh.it> <pHlz5-2HQ-31@gated-at.bofh.it> <pHpCG-5dF-1@gated-at.bofh.it>
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* Adrian Hunter <adrian.hunter@intel.com> wrote:

> I am going to need to know what hardware it is and cpu feature flags i.e.
> /proc/cpuinfo
> 
> Also ls /sys/bus/event_source/devices

Sorry about the delay, the merge window is busier than usual ...

So I tried it on:

  1) Intel box, old kernel, new tools: threw an error
  2)   AMD box, new kernel, new tools: threw an error
  3)   AMD box, old kernel, new tools: threw an error

failure was expected in all 3 cases, but it threw the exact same error with no 
real indication about what the problem was, while the real problem was different 
for each case:

  1)  good CPU,  bad kernel
  2)   bad CPU, good kernel
  3)   bad CPU,  bad kernel

I'd expect the 'good CPU, good kernel' combination to work:

  4) Intel box, new kernel, new tools

... but haven't tried it yet.

Thanks,

	Ingo
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Thread

Re: [GIT PULL 0/8] perf/pt -> Intel PT/BTS Ingo Molnar <mingo@kernel.org> - 2015-06-30 13:00 +0200
  Re: [GIT PULL 0/8] perf/pt -> Intel PT/BTS Adrian Hunter <adrian.hunter@intel.com> - 2015-07-01 10:30 +0200
    Re: [GIT PULL 0/8] perf/pt -> Intel PT/BTS Ingo Molnar <mingo@kernel.org> - 2015-07-02 11:30 +0200
    Re: [GIT PULL 0/8] perf/pt -> Intel PT/BTS Ingo Molnar <mingo@kernel.org> - 2015-07-02 11:50 +0200
      Re: [GIT PULL 0/8] perf/pt -> Intel PT/BTS Adrian Hunter <adrian.hunter@intel.com> - 2015-07-02 14:40 +0200
        Re: [GIT PULL 0/8] perf/pt -> Intel PT/BTS Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-07-02 15:10 +0200
        Re: [GIT PULL 0/8] perf/pt -> Intel PT/BTS Adrian Hunter <adrian.hunter@intel.com> - 2015-07-03 11:20 +0200
      Re: [GIT PULL 0/8] perf/pt -> Intel PT/BTS Alexander Shishkin <alexander.shishkin@linux.intel.com> - 2015-07-03 16:40 +0200

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