[tip:core/locking] liblockdep: Add pthread_rwlock_t test suite

[tip-bot for Sasha Levin <sasha.levin@oracle.com>]

Commit-ID:  8baa277b1b862ced9fce64d5ee5386676a723025
Gitweb:     http://git.kernel.org/tip/8baa277b1b862ced9fce64d5ee5386676a723025
Author:     Sasha Levin <sasha.levin@oracle.com>
AuthorDate: Sun, 3 Feb 2013 20:50:42 -0500
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Mon, 4 Feb 2013 11:39:06 +0100

liblockdep: Add pthread_rwlock_t test suite

A simple test to make sure we handle rwlocks correctly.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: paulus@samba.org
Cc: acme@ghostprotocols.net
Cc: penberg@kernel.org
Cc: peterz@infradead.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1359942644-26371-5-git-send-email-sasha.levin@oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 tools/lib/lockdep/tests/WW.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/tools/lib/lockdep/tests/WW.c b/tools/lib/lockdep/tests/WW.c
new file mode 100644
index 0000000..4b1be0f
--- /dev/null
+++ b/tools/lib/lockdep/tests/WW.c
@@ -0,0 +1,16 @@
+#include <liblockdep/rwlock.h>
+
+void main(void)
+{
+	pthread_rwlock_t a, b;
+
+	liblockdep_init();
+	liblockdep_set_thread();
+
+	pthread_rwlock_init(&a, NULL);
+	pthread_rwlock_init(&b, NULL);
+
+	pthread_rwlock_wrlock(&a);
+	pthread_rwlock_rdlock(&b);
+	pthread_rwlock_wrlock(&a);
+}