1) perf build
=============
The perf build process consists of several separated building blocks,
which are linked together to form the perf binary:
  - libperf library (static)
  - perf builtin commands
  - traceevent library (static)
  - GTK ui library

Several makefiles govern the perf build:

  - Makefile
    top level Makefile working as a wrapper that calls the main
    Makefile.perf with a -j option to do parallel builds.

  - Makefile.perf
    main makefile that triggers build of all perf objects including
    installation and documentation processing.

  - tools/build/Makefile.build
    main makefile of the build framework

  - tools/build/Build.include
    build framework generic definitions

  - Build makefiles
    makefiles that defines build objects

Please refer to tools/build/Documentation/Build.txt for more
information about build framework.


2) perf build
=============
The Makefile.perf triggers the build framework for build objects:
   perf, libperf, gtk

resulting in following objects:
  $ ls  *-in.o
  gtk-in.o  libperf-in.o  perf-in.o

Those objects are then used in final linking:
  libperf-gtk.so <- gtk-in.o  libperf-in.o
  perf           <- perf-in.o libperf-in.o


NOTE this description is omitting other libraries involved, only
     focusing on build framework outcomes
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=dac5f86bc9e60eae87a28512f025362d1e2574e3'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=dac5f86bc9e60eae87a28512f025362d1e2574e3'>include</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='dac5f86bc9e60eae87a28512f025362d1e2574e3'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Chen-Yu Tsai &lt;wens@csie.org&gt;</td><td class='right'>2016-11-25 20:34:36 +0800</td></tr>
<tr><th>committer</th><td>Mark Brown &lt;broonie@kernel.org&gt;</td><td class='right'>2016-11-30 18:06:18 +0000</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include?id=dac5f86bc9e60eae87a28512f025362d1e2574e3'>dac5f86bc9e60eae87a28512f025362d1e2574e3</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include?id=dac5f86bc9e60eae87a28512f025362d1e2574e3'>patch</a>)</td></tr>
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<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include?id=999982ef7c7f8aa131d32ef551897804443a40a1'>999982ef7c7f8aa131d32ef551897804443a40a1</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include?id=dac5f86bc9e60eae87a28512f025362d1e2574e3&amp;id2=999982ef7c7f8aa131d32ef551897804443a40a1'>diff</a>)</td></tr></table>
<div class='commit-subject'>ASoC: sun4i-codec: Add support for A23 codec</div><div class='commit-msg'>The codec in the A23 is similar to the one found on the A31. One key
difference is the analog path controls are routed through the PRCM
block. This is supported by the sun8i-codec-analog driver, and tied
into this codec driver with the audio card's aux_dev.

In addition, the A23 does not have LINEOUT, and it does not support
headset jack detection or buttons.

Signed-off-by: Chen-Yu Tsai &lt;wens@csie.org&gt;
Acked-by: Rob Herring &lt;robh@kernel.org&gt;
Acked-by: Maxime Ripard &lt;maxime.ripard@free-electrons.com&gt;
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=dac5f86bc9e60eae87a28512f025362d1e2574e3'>Diffstat</a> (limited to 'include')</div><table summary='diffstat' class='diffstat'>