perf-lock(1)
============

NAME
----
perf-lock - Analyze lock events

SYNOPSIS
--------
[verse]
'perf lock' {record|report|script|info}

DESCRIPTION
-----------
You can analyze various lock behaviours
and statistics with this 'perf lock' command.

  'perf lock record <command>' records lock events
  between start and end <command>. And this command
  produces the file "perf.data" which contains tracing
  results of lock events.

  'perf lock report' reports statistical data.

  'perf lock script' shows raw lock events.

  'perf lock info' shows metadata like threads or addresses
  of lock instances.

COMMON OPTIONS
--------------

-i::
--input=<file>::
        Input file name. (default: perf.data unless stdin is a fifo)

-v::
--verbose::
        Be more verbose (show symbol address, etc).

-D::
--dump-raw-trace::
        Dump raw trace in ASCII.

REPORT OPTIONS
--------------

-k::
--key=<value>::
        Sorting key. Possible values: acquired (default), contended,
	avg_wait, wait_total, wait_max, wait_min.

INFO OPTIONS
------------

-t::
--threads::
	dump thread list in perf.data

-m::
--map::
	dump map of lock instances (address:name table)

SEE ALSO
--------
linkperf:perf[1]
t-loop-back</option>
<option value='packet-rx-pump-back'>packet-rx-pump-back</option>
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<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=85c727b5948344c8d559e2fda8925e9ddd41c29a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=85c727b5948344c8d559e2fda8925e9ddd41c29a'>include</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='85c727b5948344c8d559e2fda8925e9ddd41c29a'/><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>Marcelo Ricardo Leitner &lt;marcelo.leitner@gmail.com&gt;</td><td class='right'>2017-02-07 11:37:56 -0200</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-07 14:11:04 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include?id=85c727b5948344c8d559e2fda8925e9ddd41c29a'>85c727b5948344c8d559e2fda8925e9ddd41c29a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include?id=85c727b5948344c8d559e2fda8925e9ddd41c29a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=85c727b5948344c8d559e2fda8925e9ddd41c29a'>ca4a55955cedd8871f53b00e859b3d51b9489ace</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include?id=85c727b5948344c8d559e2fda8925e9ddd41c29a'>include</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include?id=bb580ad698aeb4e5455d701c228c50355f84c056'>bb580ad698aeb4e5455d701c228c50355f84c056</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include?id=85c727b5948344c8d559e2fda8925e9ddd41c29a&amp;id2=bb580ad698aeb4e5455d701c228c50355f84c056'>diff</a>)</td></tr></table>
<div class='commit-subject'>sctp: drop __packed from almost all SCTP structures</div><div class='commit-msg'>__packed is considered harmful as it potentially generates code that
doesn't perform well and its usage should be avoided as much as
possible.

This patch drops __packed from all SCTP structures except one, which is
sctp_signed_cookie. In there it's required, as per changelog on
commit 9834a2bb4970 ("[SCTP]: Fix sctp_cookie alignment in the packet.").

After this patch, no alignment changes neither in x86 or x86_64 and
no exceptions were noticed during testing on both archs.

Code size for SCTP module also didn't change with this patch.

Cc: David Miller &lt;davem@davemloft.net&gt;
Cc: David Laight &lt;David.Laight@ACULAB.COM&gt;
Signed-off-by: Marcelo Ricardo Leitner &lt;marcelo.leitner@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=85c727b5948344c8d559e2fda8925e9ddd41c29a'>Diffstat</a> (limited to 'include')</div><table summary='diffstat' class='diffstat'><tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/include/linux/sctp.h?id=85c727b5948344c8d559e2fda8925e9ddd41c29a'>include/linux/sctp.h</a></td><td class='right'>80</td><td class='graph'><table summary='file diffstat' width='80%'><tr><td class='add' style='width: 50.0%;'/><td class='rem' style='width: 50.0%;'/><td class='none' style='width: 0.0%;'/></tr></table></td></tr>
<tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/cgit.cgi/linux/net-next.git/diff/include/net/sctp/structs.h?id=85c727b5948344c8d559e2fda8925e9ddd41c29a'>include/net/sctp/structs.h</a></td><td class='right'>2</td><td class='graph'><table summary='file diffstat' width='80%'><tr><td class='add' style='width: 1.2%;'/><td class='rem' style='width: 1.2%;'/><td class='none' style='width: 97.5%;'/></tr></table></td></tr>
</table><div class='diffstat-summary'>2 files changed, 41 insertions, 41 deletions</div><table summary='diff' class='diff'><tr><td><div class='head'>diff --git a/include/linux/sctp.h b/include/linux/sctp.h