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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - xserver-1.18.2 uses one core fully with dri3"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94596">94596</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>xserver-1.18.2 uses one core fully with dri3
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>xorg
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Driver/AMDgpu
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>xorg-driver-ati@lists.x.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>lordheavym@gmail.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>xorg-team@lists.x.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=122381" name="attach_122381" title="perf file with "perf record --pid <xorg>"">attachment 122381</a> <a href="attachment.cgi?id=122381&action=edit" title="perf file with "perf record --pid <xorg>"">[details]</a></span>
perf file with "perf record --pid <xorg>"

- xserver-1.18.2
- xf86-video-amdgpu-1.0.1 (same problem with git)
- linux kernel-4.5.0

afaik it was working with xserver-1.18.1, back to normal when dri3 is disabled.
Joined file is recorded with perf.</pre>
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