X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=include%2Flinux%2Fcgroup.h;h=af9c86e958bdad3be90cfb5f19aad99ede457339;hb=9dfc53942d04875c4b2fd1706f5abf93957e7106;hp=f6b43fbb141c9ad03c1e05880e8c2228743d076e;hpb=bb61ce54e8986ea18f7eb13cfa4a6fa8eb311bbd;p=mirror_ubuntu-eoan-kernel.git

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index f6b43fbb141c..af9c86e958bd 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -570,6 +570,25 @@ static inline void pr_cont_cgroup_path(struct cgroup *cgrp)
 	pr_cont_kernfs_path(cgrp->kn);
 }
 
+static inline void cgroup_init_kthreadd(void)
+{
+	/*
+	 * kthreadd is inherited by all kthreads, keep it in the root so
+	 * that the new kthreads are guaranteed to stay in the root until
+	 * initialization is finished.
+	 */
+	current->no_cgroup_migration = 1;
+}
+
+static inline void cgroup_kthread_ready(void)
+{
+	/*
+	 * This kthread finished initialization.  The creator should have
+	 * set PF_NO_SETAFFINITY if this kthread should stay in the root.
+	 */
+	current->no_cgroup_migration = 0;
+}
+
 #else /* !CONFIG_CGROUPS */
 
 struct cgroup_subsys_state;
@@ -590,6 +609,8 @@ static inline void cgroup_free(struct task_struct *p) {}
 
 static inline int cgroup_init_early(void) { return 0; }
 static inline int cgroup_init(void) { return 0; }
+static inline void cgroup_init_kthreadd(void) {}
+static inline void cgroup_kthread_ready(void) {}
 
 static inline bool task_under_cgroup_hierarchy(struct task_struct *task,
 					       struct cgroup *ancestor)