Re: [PATCH] admin guide/pm: Admin guide for intel-speed-select

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On Mon, 2019-11-18 at 10:41 -0700, Jonathan Corbet wrote:
> On Fri, 15 Nov 2019 12:49:25 -0800
> Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx> wrote:
> 
> > Added documentation to configure servers to use Intel(R) Speed
> > Select Technology using intel-speed-select tool.
> > 
> > Signed-off-by: Srinivas Pandruvada <
> > srinivas.pandruvada@xxxxxxxxxxxxxxx>
> 
> Thanks for improving the docs!  I do have a few overall comments,
> though...  
Thanks for the pointers below. I will work on this and submit again.

-Srinivas

> 
> >  .../admin-guide/pm/intel-speed-select.rst     | 934
> > ++++++++++++++++++
> >  .../admin-guide/pm/working-state.rst          |   1 +
> >  2 files changed, 935 insertions(+)
> >  create mode 100644 Documentation/admin-guide/pm/intel-speed-
> > select.rst
> > 
> > diff --git a/Documentation/admin-guide/pm/intel-speed-select.rst
> > b/Documentation/admin-guide/pm/intel-speed-select.rst
> > new file mode 100644
> > index 000000000000..c2ce57ebc268
> > --- /dev/null
> > +++ b/Documentation/admin-guide/pm/intel-speed-select.rst
> > @@ -0,0 +1,934 @@
> > +.. SPDX-License-Identifier: GPL-2.0
> > +
> > +=========================================================
> > +Intel® Speed Select Technology (Intel® SST) : User Guide
> > +=========================================================
> 
> People give me grief when I take docs patches adding non-ascii
> characters.
> Adding nearly 100 useless ® symbols seems likely to trigger that sort
> of
> unicode aversion.  Can I ask you, please, to take those out?  There
> are
> many occurrences of unadorned "Intel" in the kernel, and the world
> hasn't
> ended yet.
> 
> > +The Intel® Speed Select Technology (Intel® SST) provides a
> > powerful new
> > +collection of features that give more granular control over CPU
> > performance.
> > +With Intel® SST, one server can be configured for power and
> > performance for a
> > +variety of diverse workload requirements.
> > +
> > +Refer to the links below for an overview of the technology:
> > +
> > +- 
> > https://www.intel.com/content/www/us/en/architecture-and-technology/speed-select-technology-article.html
> > +- 
> > https://builders.intel.com/docs/networkbuilders/intel-speed-select-technology-base-frequency-enhancing-performance.pdf
> > +
> > +These capabilities are further enhanced in some of the newer
> > generations of
> > +server platforms where these features can be enumerated and
> > controlled
> > +dynamically without pre-configuring via BIOS setup options. This
> > dynamic
> > +configuration is done via mailbox commands to the hardware. One
> > way to enumerate
> > +and configure these features is by using the Intel® Speed Select
> > utility.
> > +
> > +This document explains how to use the Intel® Speed Select tool to
> > enumerate and
> > +control Intel® SST features. This document gives example commands
> > and explains
> > +how these commands change the power and performance profile of the
> > system under
> > +test. Using this tool as an example, customers can replicate the
> > messaging
> > +implemented in the tool in their production software.
> > +
> > +
> > +intel-speed-select configuration tool
> > +-------------------------------------
> 
> The conventions for subsection markers are documented in
> Documentation/doc-guide/sphinx.rst; this should be "========" rather
> than
> hyphens. 
> 
> > +Most Linux distribution packages include the "intel-speed-select"
> > tool. If not,
> > +it can be built by downloading the Linux kernel tree from
> > kernel.org. Once
> > +downloaded, the tool can be built without building the full
> > kernel.
> > +
> > +From the kernel tree, run the following commands:
> > +
> > +# cd tools/power/x86/intel-speed-select/
> > +
> > +# make
> > +
> > +# make install
> 
> This kind of stuff isn't going to render well in the built docs.  Can
> you
> please change the literal text to literal blocks?  Something like:
> 
> 	From the kernel tree, run the following commands::
> 
> 		# cd tools/power/x86/intel-speed-select/
> 		# make
> 		# make install
> 
> Note the "::" on the first line; that introduces a literal block.  It
> would
> be good to build the docs once you're done and be sure that you're
> happy
> with the results.
> 
> There's a lot of these in this document.
> 
> > +
> > +**Getting Help**
> 
> Since this is meant to be a section header, please mark it as such;
> "------" would be the appropriate marker for a header at this level.
> 
> That's enough for a first pass.
> 
> Thanks,
> 
> jon




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