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<p class="MsoNormal"><span lang="EN-CA"> Let’s assume I want to do a kernel-only LTTng installation. After putting lttng-modules in place, I get lttng-tools and, at its configure step, I do:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Courier New"">./configure --disable-lttng-ust</span><span lang="EN-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"> However, this fails with:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:Consolas;mso-fareast-language:FR-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:Consolas;mso-fareast-language:FR-CA">checking whether cds_list_add is declared... no<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:Consolas;mso-fareast-language:FR-CA">configure: error: liburcu >= 0.7.2 or newer is needed<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-family:Consolas;mso-fareast-language:FR-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"> Is this normal? If so, why is userspace-rcu (liburcu) needed for a kernel-only tracing solution? (I’m using a fairly recent set of lttng 2.2.0-rc1 git tarballs)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas;mso-fareast-language:FR-CA">Daniel U. Thibault<br>
Protection des systèmes et contremesures (PSC) | Systems Protection & Countermeasures (SPC)<br>
Cyber sécurité pour les missions essentielles (CME) | Mission Critical Cyber Security (MCCS)<br>
R & D pour la défense Canada - Valcartier (RDDC Valcartier) | Defence R&D Canada - Valcartier (DRDC Valcartier)<br>
2459 route de la Bravoure<br>
Québec QC G3J 1X5<br>
CANADA<br>
Vox</span><span style="font-size:10.5pt;font-family:Consolas"> </span><span style="font-family:Consolas;mso-fareast-language:FR-CA">: (418) 844-4000 x4245<br>
Fax</span><span style="font-size:10.5pt;font-family:Consolas"> </span><span style="font-family:Consolas;mso-fareast-language:FR-CA">: (418) 844-4538<br>
</span><span style="font-family:Consolas;mso-fareast-language:FR-CA">NAC : </span>
<span lang="EN-CA" style="color:#1F497D;mso-fareast-language:FR-CA"><a href="http://www.travelgis.com/map.asp?addr=918V%20QSDJ"><span lang="FR-CA" style="font-size:10.0pt;font-family:"Courier New";color:blue">918V QSDJ</span></a></span><span lang="EN-CA" style="color:#1F497D;mso-fareast-language:FR-CA">
</span><span style="mso-fareast-language:FR-CA"><</span><u><span style="font-size:10.0pt;font-family:"Courier New";color:blue;mso-fareast-language:FR-CA">http://www.travelgis.com/map.asp?addr=918V%20QSDJ</span></u><span style="mso-fareast-language:FR-CA">><span style="color:#1F497D"><br>
</span></span><span style="font-family:Consolas;mso-fareast-language:FR-CA">Gouvernement du Canada | Government of Canada<br>
</span><span style="mso-fareast-language:FR-CA"><</span><span lang="EN-CA" style="font-size:10.0pt;font-family:"Courier New";color:blue;mso-fareast-language:FR-CA"><a href="http://www.valcartier.drdc-rddc.gc.ca/"><span lang="FR-CA" style="color:blue">http://www.valcartier.drdc-rddc.gc.ca/</span></a></span><span style="mso-fareast-language:FR-CA">></span><span style="font-size:10.5pt;font-family:Consolas;mso-fareast-language:FR-CA"><o:p></o:p></span></p>
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