cgroup: be nice to Ingo Molnar

https://bugzilla.redhat.com/show_bug.cgi?id=628004

1 files changed, 6 insertions, 0 deletions

diff --git a/src/cgroup.c b/src/cgroup.c
index 5864858dd7..ca19a4fd47 100644
--- a/src/cgroup.c
+++ b/src/cgroup.c
@@ -225,6 +225,12 @@ int manager_setup_cgroup(Manager *m) {
 
         assert(m);
 
+        /* 0. Be nice to Ingo Molnar #628004 */
+        if (path_is_mount_point("/sys/fs/cgroup/systemd") <= 0) {
+                log_warning("No control group support available, not creating root group.");
+                return 0;
+        }
+
         /* 1. Determine hierarchy */
         if ((r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, 0, &current)) < 0) {
                 log_error("Cannot determine cgroup we are running in: %s", strerror(-r));