Most of the infrastructure that 'perf' uses here has been reused
from the Git project, as of version:

    66996ec: Sync with 1.6.2.4

Here is an (incomplete!) list of main contributors to those files
in util/* and elsewhere:

 Alex Riesen
 Christian Couder
 Dmitry Potapov
 Jeff King
 Johannes Schindelin
 Johannes Sixt
 Junio C Hamano
 Linus Torvalds
 Matthias Kestenholz
 Michal Ostrowski
 Miklos Vajna
 Petr Baudis
 Pierre Habouzit
 René Scharfe
 Samuel Tardieu
 Shawn O. Pearce
 Steffen Prohaska
 Steve Haslam

Thanks guys!

The full history of the files can be found in the upstream Git commits.
<div id='cgit'><table id='header'>
<tr>
<td class='logo' rowspan='2'><a href='/cgit.cgi/'><img src='/cgit.png' alt='cgit logo'/></a></td>
<td class='main'><a href='/cgit.cgi/'>index</a> : <a href='/cgit.cgi/linux/net-next.git/'>net-next.git</a></td><td class='form'><form method='get'>
<input type='hidden' name='id' value='a57cb1c1d7974c62a5c80f7869e35b492ace12cd'/><select name='h' onchange='this.form.submit();'>
<option value='emaclite-cleanup'>emaclite-cleanup</option>
<option value='master'>master</option>
<option value='nds-private-remove'>nds-private-remove</option>
<option value='packet-loop-back' selected='selected'>packet-loop-back</option>
<option value='packet-rx-pump-back'>packet-rx-pump-back</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
<table class='tabs'><tr><td>
<a href='/cgit.cgi/linux/net-next.git/?h=packet-loop-back'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?h=packet-loop-back&amp;id=a57cb1c1d7974c62a5c80f7869e35b492ace12cd'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/arch?h=packet-loop-back'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/arch?h=packet-loop-back&amp;id=a57cb1c1d7974c62a5c80f7869e35b492ace12cd'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/arch?h=packet-loop-back&amp;id=a57cb1c1d7974c62a5c80f7869e35b492ace12cd'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/arch?h=packet-loop-back&amp;id=a57cb1c1d7974c62a5c80f7869e35b492ace12cd'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/arch'>
<input type='hidden' name='h' value='packet-loop-back'/><input type='hidden' name='id' value='a57cb1c1d7974c62a5c80f7869e35b492ace12cd'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=packet-loop-back&amp;id=a57cb1c1d7974c62a5c80f7869e35b492ace12cd'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/arch?h=packet-loop-back&amp;id=a57cb1c1d7974c62a5c80f7869e35b492ace12cd'>arch</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='packet-loop-back'/><input type='hidden' name='id' value='a57cb1c1d7974c62a5c80f7869e35b492ace12cd'/><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>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-14 17:25:18 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-14 17:25:18 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/arch?h=packet-loop-back&amp;id=a57cb1c1d7974c62a5c80f7869e35b492ace12cd'>a57cb1c1d7974c62a5c80f7869e35b492ace12cd</a> (<a href='/cgit.cgi/linux/net-next.git/patch/arch?id=a57cb1c1d7974c62a5c80f7869e35b492ace12cd'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=packet-loop-back&amp;id=a57cb1c1d7974c62a5c80f7869e35b492ace12cd'>5a42ee9a668f171143464bc86013954c1bbe94ad</a> /<a href='/cgit.cgi/linux/net-next.git/tree/arch?h=packet-loop-back&amp;id=a57cb1c1d7974c62a5c80f7869e35b492ace12cd'>arch</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/arch?h=packet-loop-back&amp;id=cf1b3341afab9d3ad02a76b3a619ea027dcf4e28'>cf1b3341afab9d3ad02a76b3a619ea027dcf4e28</a> (<a href='/cgit.cgi/linux/net-next.git/diff/arch?h=packet-loop-back&amp;id=a57cb1c1d7974c62a5c80f7869e35b492ace12cd&amp;id2=cf1b3341afab9d3ad02a76b3a619ea027dcf4e28'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/arch?h=packet-loop-back&amp;id=e1e14ab8411df344a17687821f8f78f0a1e73cbb'>e1e14ab8411df344a17687821f8f78f0a1e73cbb</a> (<a href='/cgit.cgi/linux/net-next.git/diff/arch?h=packet-loop-back&amp;id=a57cb1c1d7974c62a5c80f7869e35b492ace12cd&amp;id2=e1e14ab8411df344a17687821f8f78f0a1e73cbb'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'akpm' (patches from Andrew)</div><div class='commit-msg'>Merge more updates from Andrew Morton:

 - a few misc things

 - kexec updates

 - DMA-mapping updates to better support networking DMA operations

 - IPC updates

 - various MM changes to improve DAX fault handling

 - lots of radix-tree changes, mainly to the test suite. All leading up
   to reimplementing the IDA/IDR code to be a wrapper layer over the
   radix-tree. However the final trigger-pulling patch is held off for
   4.11.

* emailed patches from Andrew Morton &lt;akpm@linux-foundation.org&gt;: (114 commits)
  radix tree test suite: delete unused rcupdate.c
  radix tree test suite: add new tag check
  radix-tree: ensure counts are initialised
  radix tree test suite: cache recently freed objects
  radix tree test suite: add some more functionality
  idr: reduce the number of bits per level from 8 to 6
  rxrpc: abstract away knowledge of IDR internals
  tpm: use idr_find(), not idr_find_slowpath()
  idr: add ida_is_empty
  radix tree test suite: check multiorder iteration
  radix-tree: fix replacement for multiorder entries
  radix-tree: add radix_tree_split_preload()
  radix-tree: add radix_tree_split
  radix-tree: add radix_tree_join
  radix-tree: delete radix_tree_range_tag_if_tagged()
  radix-tree: delete radix_tree_locate_item()
  radix-tree: improve multiorder iterators
  btrfs: fix race in btrfs_free_dummy_fs_info()
  radix-tree: improve dump output
  radix-tree: make radix_tree_find_next_bit more useful
  ...
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=packet-loop-back&amp;id=a57cb1c1d7974c62a5c80f7869e35b492ace12cd'>Diffstat</a> (limited to 'arch')</div><table summary='diffstat' class='diffstat'>