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-rw-r--r--Documentation/locking/00-INDEX16
-rw-r--r--Documentation/locking/lockstat.txt5
2 files changed, 21 insertions, 0 deletions
diff --git a/Documentation/locking/00-INDEX b/Documentation/locking/00-INDEX
new file mode 100644
index 0000000..c256c9b
--- /dev/null
+++ b/Documentation/locking/00-INDEX
@@ -0,0 +1,16 @@
+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
diff --git a/Documentation/locking/lockstat.txt b/Documentation/locking/lockstat.txt
index 7428773..568bbba 100644
--- a/Documentation/locking/lockstat.txt
+++ b/Documentation/locking/lockstat.txt
@@ -121,6 +121,11 @@ show the header with column descriptions. Lines 05-18 and 20-31 show the actual
statistics. These statistics come in two parts; the actual stats separated by a
short separator (line 08, 13) from the contention points.
+Lines 09-12 show the first 4 recorded contention points (the code
+which tries to get the lock) and lines 14-17 show the first 4 recorded
+contended points (the lock holder). It is possible that the max
+con-bounces point is missing in the statistics.
+
The first lock (05-18) is a read/write lock, and shows two lines above the
short separator. The contention points don't match the column descriptors,
they have two: contentions and [<IP>] symbol. The second set of contention
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