Add pthreads lock profiling and lock ordering task to ideas list.

Submitted by:	jeff, kris

en/projects/ideas/ideas.xml

@@ -15,7 +15,7 @@ Ideas//EN"
 <ideas>
   <cvs:keywords xmlns:cvs="http://www.FreeBSD.org/XML/CVS" version="1.0">
     <cvs:keyword name="freebsd">
-      $FreeBSD: www/en/projects/ideas/ideas.xml,v 1.72 2008/03/22 16:32:40 rwatson Exp $
+      $FreeBSD: www/en/projects/ideas/ideas.xml,v 1.73 2008/03/22 17:48:27 rwatson Exp $
     </cvs:keyword>
   </cvs:keywords>
 
@@ -2153,5 +2153,33 @@ SMP features.</p>
 	</desc>
       </idea>
 
+      <idea class="soc" id="pthread-profile">
+	<title>Userspace pthread mutex lock contention profiling and lock
+	  order verification tool</title>
+
+	<desc><p><strong>Technical contact</strong>: <a
+	  href="mailto:jeff@FreeBSD.org">Jeff Roberson</a></p>
+
+	<p>This task would create an extension to the threading library
+	  that would allow application developers to measure and locate lock
+	  ordering and lock contention problems within their application.
+	  Such a tool is invaluable in debugging application deadlocks and
+	  creating high-performance multithreaded software.  Existing lock
+	  ordering and profiling tools exist in the FreeBSD kernel, and
+	  could be used as the model for the userspace implementation.  We
+	  would recommend beginning with profiling due to its immediate
+	  usefulness in optimizing performance, and to allow improvements
+	  in kernel scheduling to better manage user application lock
+	  contention.</p>
+
+	<p><strong>Requirements</strong>:</p>
+	<ul>
+	  <li>Strong knowledge of C.</li>
+	  <li>Threading experience.</li>
+	  <li>Strong debugging skills.</li>
+	</ul>
+	</desc>
+      </idea>
+
   </category>
 </ideas>