linux-kernel - [RFC v7 17/19] Revert "locking/lockdep/selftests: Fix mixed read-write ABBA tests"

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Date:   Fri,  7 Aug 2020 15:42:36 +0800
From:   Boqun Feng <boqun.feng@...il.com>
To:     linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        Waiman Long <longman@...hat.com>,
        Boqun Feng <boqun.feng@...il.com>
Subject: [RFC v7 17/19] Revert "locking/lockdep/selftests: Fix mixed read-write ABBA tests"

This reverts commit d82fed75294229abc9d757f08a4817febae6c4f4.

Since we now could handle mixed read-write deadlock detection well, the
self tests could be detected as expected, no need to use this
work-around.

Signed-off-by: Boqun Feng <boqun.feng@...il.com>
---
 lib/locking-selftest.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index 76c314ab4f03..4264cf4b60bb 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -2273,14 +2273,6 @@ 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);
 
-- 
2.28.0