cgroup: be nice to Ingo Molnar

[elogind.git] / src / main.c

diff --git a/src/main.c b/src/main.c
index 8d27eb426692afa500d59b5b1b6a0ca5cdd0d707..b43d8eca918ffa9d94afdb5fa57fa430381aeb5f 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -985,10 +985,26 @@ static void test_usr(void) {
 
         /* Check that /usr is not a separate fs */
 
-        if (dir_is_empty("/usr") > 0)
-                log_warning("/usr appears to be on a different file system than /. This is not supported anymore. "
-                            "Some things will probably break (sometimes even silently) in mysterious ways. "
-                            "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
+        if (dir_is_empty("/usr") <= 0)
+                return;
+
+        log_warning("/usr appears to be on a different file system than /. This is not supported anymore. "
+                    "Some things will probably break (sometimes even silently) in mysterious ways. "
+                    "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
+}
+
+static void test_cgroups(void) {
+
+        if (access("/proc/cgroups", F_OK) >= 0)
+                return;
+
+        log_warning("CONFIG_CGROUPS was not set when your kernel was compiled. "
+                    "Systems without control groups are not supported. "
+                    "We will now sleep for 10s, and then continue boot-up. "
+                    "Expect breakage and please do not file bugs. "
+                    "Instead fix your kernel and enable CONFIG_CGROUPS." );
+
+        sleep(10);
 }
 
 int main(int argc, char *argv[]) {
@@ -1077,11 +1093,6 @@ int main(int argc, char *argv[]) {
                 goto finish;
         }
 
-        /* If Plymouth is being run make sure we show the status, so
-         * that there's something nice to see when people press Esc */
-        if (access("/run/initramfs/plymouth", F_OK) >= 0)
-                arg_show_status = true;
-
         if (arg_action == ACTION_HELP) {
                 retval = help();
                 goto finish;
@@ -1161,7 +1172,7 @@ int main(int argc, char *argv[]) {
         if (arg_running_as == MANAGER_SYSTEM && !serialization) {
                 locale_setup();
 
-                if (arg_show_status)
+                if (arg_show_status || plymouth_running())
                         status_welcome();
 
                 kmod_setup();
@@ -1171,6 +1182,7 @@ int main(int argc, char *argv[]) {
 
                 test_mtab();
                 test_usr();
+                test_cgroups();
         }
 
         if ((r = manager_new(arg_running_as, &m)) < 0) {