core: find the closest parent slice that has a specfic cgroup controller enabled...

[elogind.git] / src / shared / cgroup-util.c

diff --git a/src/shared/cgroup-util.c b/src/shared/cgroup-util.c
index 9692a07f56484a2071321fb9371e66cca79543be..1aa81c2cd18f1700a75631a4d6b9b1659dba3e9b 100644 (file)
--- a/src/shared/cgroup-util.c
+++ b/src/shared/cgroup-util.c
@@ -1668,7 +1668,7 @@ int cg_attach_many_everywhere(CGroupControllerMask supported, const char *path,
         return r;
 }
 
         return r;
 }
 

-int cg_migrate_everywhere(CGroupControllerMask supported, const char *from, const char *to) {
+int cg_migrate_everywhere(CGroupControllerMask supported, const char *from, const char *to, cg_migrate_callback_t to_callback, void *userdata) {

         CGroupControllerMask bit = 1;
         const char *n;
         int r;
         CGroupControllerMask bit = 1;
         const char *n;
         int r;


@@ -1680,8 +1680,17 @@ int cg_migrate_everywhere(CGroupControllerMask supported, const char *from, cons
         }
 
         NULSTR_FOREACH(n, mask_names) {
         }
 
         NULSTR_FOREACH(n, mask_names) {

-                if (supported & bit)
-                        cg_migrate_recursive_fallback(SYSTEMD_CGROUP_CONTROLLER, to, n, to, false, false);
+                if (supported & bit) {
+                        const char *p = NULL;
+
+                        if (to_callback)
+                                p = to_callback(bit, userdata);
+
+                        if (!p)
+                                p = to;
+
+                        cg_migrate_recursive_fallback(SYSTEMD_CGROUP_CONTROLLER, to, n, p, false, false);
+                }

 
                 bit <<= 1;
         }
 
                 bit <<= 1;
         }