static int unit_create_cgroups(Unit *u, CGroupControllerMask mask) {
_cleanup_free_ char *path = NULL;
+ CGroupContext *c;
int r;
assert(u);
+ c = unit_get_cgroup_context(u);
+ if (!c)
+ return 0;
+
path = unit_default_cgroup_path(u);
if (!path)
return log_oom();
u->cgroup_realized = true;
u->cgroup_realized_mask = mask;
- /* Then, possibly move things over */
- r = cg_migrate_everywhere(u->manager->cgroup_supported, u->cgroup_path, u->cgroup_path, migrate_callback, u);
- if (r < 0)
- log_warning_errno(r, "Failed to migrate cgroup from to %s: %m", u->cgroup_path);
+ if (u->type != UNIT_SLICE && !c->delegate) {
+
+ /* Then, possibly move things over, but not if
+ * subgroups may contain processes, which is the case
+ * for slice and delegation units. */
+ r = cg_migrate_everywhere(u->manager->cgroup_supported, u->cgroup_path, u->cgroup_path, migrate_callback, u);
+ if (r < 0)
+ log_warning_errno(r, "Failed to migrate cgroup from to %s: %m", u->cgroup_path);
+ }
return 0;
}
return unit_realize_cgroup_now(u, manager_state(u->manager));
}
-void unit_destroy_cgroup(Unit *u) {
+void unit_destroy_cgroup_if_empty(Unit *u) {
int r;
assert(u);
return;
r = cg_trim_everywhere(u->manager->cgroup_supported, u->cgroup_path, !unit_has_name(u, SPECIAL_ROOT_SLICE));
- if (r < 0)
+ if (r < 0) {
log_debug_errno(r, "Failed to destroy cgroup %s: %m", u->cgroup_path);
+ return;
+ }
hashmap_remove(u->manager->cgroup_unit, u->cgroup_path);
u->cgroup_path = NULL;
u->cgroup_realized = false;
u->cgroup_realized_mask = 0;
-
}
pid_t unit_search_main_pid(Unit *u) {