From e5a53dc74636ffa9de639733a0bef65f967c9ffa Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 12 Apr 2011 22:15:59 +0200
Subject: cgroup: be nice to Ingo Molnar

https://bugzilla.redhat.com/show_bug.cgi?id=628004
---
 src/cgroup.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/cgroup.c')

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));
-- 
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