Re: [PATCH v0 2/3] perf/x86/intel/pt: Export cpu frequency ratios needed by PT decoders

From	Borislav Petkov <bp@alien8.de>
Newsgroups	linux.kernel
Subject	Re: [PATCH v0 2/3] perf/x86/intel/pt: Export cpu frequency ratios needed by PT decoders
Date	2016-05-03 16:00 +0200
Message-ID	<ruJ1M-LG-3@gated-at.bofh.it> (permalink)
References	<rsWcN-5NB-11@gated-at.bofh.it> <rsWcO-5NB-33@gated-at.bofh.it>
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On Thu, Apr 28, 2016 at 06:35:45PM +0300, Alexander Shishkin wrote:
> In order for Intel PT decoders to infer correct crystal clock and bus
> frequencies that are required to correctly decode timing information
> from a PT stream (MTC and CBR packets), export them as sysfs attributes:
> 
>   * max_nonturbo_ratio: ratio between the invariant TSC and base clock;
>   * tsc_art_ratio: TSC to core crystal clock ratio.

I guess new sysfs nodes need to be documented:

Documentation/ABI/...

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.

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[PATCH v0 0/3] perf, pt: Intel PT updates Alexander Shishkin <alexander.shishkin@linux.intel.com> - 2016-04-28 17:40 +0200
  [PATCH v0 2/3] perf/x86/intel/pt: Export cpu frequency ratios needed by PT decoders Alexander Shishkin <alexander.shishkin@linux.intel.com> - 2016-04-28 17:40 +0200
    Re: [PATCH v0 2/3] perf/x86/intel/pt: Export cpu frequency ratios needed by PT decoders Alexander Shishkin <alexander.shishkin@linux.intel.com> - 2016-04-28 18:00 +0200
      [tip:perf/core] perf/x86/intel/pt: Export CPU frequency ratios  needed by PT decoders tip-bot for Alexander Shishkin <tipbot@zytor.com> - 2016-05-05 12:00 +0200
    Re: [PATCH v0 2/3] perf/x86/intel/pt: Export cpu frequency ratios  needed by PT decoders Borislav Petkov <bp@alien8.de> - 2016-05-03 16:00 +0200

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