linux-kernel - [PATCH 15/17] locking/lockdep: Adjust selftest case for recursive read lock

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Date:   Mon, 13 May 2019 17:12:01 +0800
From:   Yuyang Du <duyuyang@...il.com>
To:     peterz@...radead.org, will.deacon@....com, mingo@...nel.org
Cc:     bvanassche@....org, ming.lei@...hat.com, frederic@...nel.org,
        tglx@...utronix.de, boqun.feng@...il.com,
        linux-kernel@...r.kernel.org, Yuyang Du <duyuyang@...il.com>
Subject: [PATCH 15/17] locking/lockdep: Adjust selftest case for recursive read lock

Now that we support recursive read locks, a previously failed case:

 ----------------------------------------------------------------------------
                                  | spin |wlock |rlock |mutex | wsem | rsem |
   --------------------------------------------------------------------------
   mixed read-lock/lock-write ABBA:             |FAILED|             |  ok  |

can be added back. Now we have:

	Good, all 262 testcases passed!

See the case in: e91498589746065e3a ("Add mixed read-write ABBA tests")

Signed-off-by: Yuyang Du <duyuyang@...il.com>
---
 lib/locking-selftest.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index f83f047..4c6dd8a 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -2055,13 +2055,6 @@ void locking_selftest(void)
 	print_testname("mixed read-lock/lock-write ABBA");
 	pr_cont("             |");
 	dotest(rlock_ABBA1, FAILURE, LOCKTYPE_RWLOCK);
-#ifdef CONFIG_PROVE_LOCKING
-	/*
-	 * Lockdep does indeed fail here, but there's nothing we can do about
-	 * that now.  Don't kill lockdep for it.
-	 */
-	unexpected_testcase_failures--;
-#endif
 
 	pr_cont("             |");
 	dotest(rwsem_ABBA1, FAILURE, LOCKTYPE_RWSEM);
-- 
1.8.3.1