gentoo-overlay/sys-kernel/ck-sources/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <!-- maintainer-needed -->
  <use>
    <flag name="bfsonly">BFS by itself vs the full ck patchset</flag>
    <flag name="experimental">Allow experimental code. Can break or degrade
      performance. (UNSUPPORTED)
    </flag>
    <flag name="urwlocks">Use upgradable read/write locks in place of the grq
      spinlock. (EXPERIMENTAL)
    </flag>
    <flag name="deblob">Remove binary blobs from kernel sources to provide
      libre license compliance.
    </flag>
  </use>
  <upstream>
    <remote-id type="cpe">cpe:/o:linux:linux_kernel</remote-id>
  </upstream>
</pkgmetadata>