2 files changed, 10 insertions, 33 deletions

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 947d3e2ed5c2..9d5b78aad4c5 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1099,8 +1099,6 @@ config PROVE_LOCKING
         select DEBUG_MUTEXES
         select DEBUG_RT_MUTEXES if RT_MUTEXES
         select DEBUG_LOCK_ALLOC
-        select LOCKDEP_CROSSRELEASE
-        select LOCKDEP_COMPLETIONS
         select TRACE_IRQFLAGS
         default n
         help
@@ -1170,37 +1168,6 @@ config LOCK_STAT
          CONFIG_LOCK_STAT defines "contended" and "acquired" lock events.
          (CONFIG_LOCKDEP defines "acquire" and "release" events.)
 
-config LOCKDEP_CROSSRELEASE
-        bool
-        help
-         This makes lockdep work for crosslock which is a lock allowed to
-         be released in a different context from the acquisition context.
-         Normally a lock must be released in the context acquiring the lock.
-         However, relexing this constraint helps synchronization primitives
-         such as page locks or completions can use the lock correctness
-         detector, lockdep.
-
-config LOCKDEP_COMPLETIONS
-        bool
-        help
-         A deadlock caused by wait_for_completion() and complete() can be
-         detected by lockdep using crossrelease feature.
-
-config BOOTPARAM_LOCKDEP_CROSSRELEASE_FULLSTACK
-        bool "Enable the boot parameter, crossrelease_fullstack"
-        depends on LOCKDEP_CROSSRELEASE
-        default n
-        help
-         The lockdep "cross-release" feature needs to record stack traces
-         (of calling functions) for all acquisitions, for eventual later
-         use during analysis. By default only a single caller is recorded,
-         because the unwind operation can be very expensive with deeper
-         stack chains.
-
-         However a boot parameter, crossrelease_fullstack, was
-         introduced since sometimes deeper traces are required for full
-         analysis. This option turns on the boot parameter.
-
 config DEBUG_LOCKDEP
         bool "Lock dependency engine debugging"
         depends on DEBUG_KERNEL && LOCKDEP
diff --git a/lib/rbtree.c b/lib/rbtree.c
index ba4a9d165f1b..d3ff682fd4b8 100644
--- a/lib/rbtree.c
+++ b/lib/rbtree.c
@@ -603,6 +603,16 @@ void rb_replace_node(struct rb_node *victim, struct rb_node *new,
 }
 EXPORT_SYMBOL(rb_replace_node);
 
+void rb_replace_node_cached(struct rb_node *victim, struct rb_node *new,
+                            struct rb_root_cached *root)
+{
+        rb_replace_node(victim, new, &root->rb_root);
+
+        if (root->rb_leftmost == victim)
+                root->rb_leftmost = new;
+}
+EXPORT_SYMBOL(rb_replace_node_cached);
+
 void rb_replace_node_rcu(struct rb_node *victim, struct rb_node *new,
                          struct rb_root *root)
 {