<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><br><div><div>On Jan 30, 2014, at 2:37 AM, Chandrasekaran Sivakumar <<a href="mailto:chandru.a6@gmail.com">chandru.a6@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr">Hi,<div><br></div><div><span style="font-family:arial,sans-serif">I couldnt find ft_trace device in /dev/litmus. These options were not available when I did 'make menuconfig'</span><br></div><div><span style="font-family:arial,sans-serif"><br>
</span></div><div><span style="font-family:arial,sans-serif;font-size:13px">LITMUS^RT > Tracing > Feather-Trace Infrastructure (CONFIG_FEATHER_TRACE)</span><br style="font-family:arial,sans-serif;font-size:13px"><span style="font-family:arial,sans-serif;font-size:13px">LITMUS^RT > Tracing > Record timestamps for overhead measurements (CONFIG_SCHED_OVERHEAD_TRACE)</span><br style="font-family:arial,sans-serif;font-size:13px">
<span style="font-family:arial,sans-serif;font-size:13px">LITMUS^RT > Tracing > Buffer size for Feather-Trace overhead data (CONFIG_SCHED_OVERHEAD_TRACE_</span><span style="font-family:arial,sans-serif;font-size:13px">SHIFT)</span></div>
<div><font face="arial, sans-serif"> </font></div><div>So I checked litmus/litmusrt/Kconfig..</div><div>It had only this,</div><div><br></div><div><div>#</div><div># For a description of the syntax of this configuration file,</div>
<div># see Documentation/kbuild/kconfig-language.txt.</div><div>#</div><div>mainmenu "Linux/$ARCH $KERNELVERSION Kernel Configuration"</div><div><br></div><div>config SRCARCH</div><div><span class="" style="white-space:pre"> </span>string</div>
<div><span class="" style="white-space:pre"> </span>option env="SRCARCH"</div><div><br></div><div>source "arch/$SRCARCH/Kconfig"</div></div><div><font face="arial, sans-serif"><br clear="all"></font><div>
<div>Am I looking at the wrong file ?</div><div dir="ltr"><br></div><div dir="ltr">Regards,<div>chandru</div></div></div>
</div></div></blockquote><br></div><div>You want to look at litmus-rt/litmus/Kconfig. Here’s the file as it appears on github: <a href="https://github.com/LITMUS-RT/litmus-rt/blob/master/litmus/Kconfig">https://github.com/LITMUS-RT/litmus-rt/blob/master/litmus/Kconfig</a></div><div><br></div><div>It looks like:</div><div>1) CONFIG_RELOCATABLE must NOT be set.</div><div>… and that’s it.</div><div><br></div><div>Björn: Is this constraint still necessary? Didn’t we move to dynamically allocated buffers over the summer?</div><div><br></div><div>-Glenn</div></body></html>