cgroups: handle noprefix mounts

The cgroups mount might use the names "cpuset.cpus" and "cpuset.mems",
or "cpus" and "mems" (when mounted with "noprefix").  Support both.

BUG=chromium:786506, chromium:647994
TEST=precq still works

Change-Id: I07b5e62b3390426556a7d29599cc36be640bb699
(cherry picked from commit 994fd785b6465efc3eb86e65c57a770954bbeaec)
Reviewed-on: https://chromium-review.googlesource.com/1139274
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
1 file changed