v4.19.13 snapshot.
diff --git a/Documentation/locking/00-INDEX b/Documentation/locking/00-INDEX
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+00-INDEX
+ - this file.
+lockdep-design.txt
+ - documentation on the runtime locking correctness validator.
+lockstat.txt
+ - info on collecting statistics on locks (and contention).
+mutex-design.txt
+ - info on the generic mutex subsystem.
+rt-mutex-design.txt
+ - description of the RealTime mutex implementation design.
+rt-mutex.txt
+ - desc. of RT-mutex subsystem with PI (Priority Inheritance) support.
+spinlocks.txt
+ - info on using spinlocks to provide exclusive access in kernel.
+ww-mutex-design.txt
+ - Intro to Mutex wait/would deadlock handling.s