title: View c++ source code in kcachegrind and reset configuration of kcachegrind
body: <p>I am using valgrind to profile a C++ code on Ubuntu 20.04.</p>
  <p>I would like to view the C++ source code of the functions in the profile.  Is this possible?</p>
  <p>I am using:</p>
  <pre><code>valgrind --tool=callgrind --dump-instr=yes --simulate-cache=yes --collect-jumps=yes progName
  </code></pre>
  <p>Additionally, how can I reset the default configuration of kcachegrind?</p>