From: Andi Kleen <andi@firstfloor.org>
To: linux-kernel@vger.kernel.org
Cc: Andi Kleen <ak@linux.intel.com>
Subject: [PATCH 07/11] futex: Use lockdep_assert_held() for lock checking
Date: Fri, 16 Mar 2012 12:01:00 -0700 [thread overview]
Message-ID: <1331924464-18023-8-git-send-email-andi@firstfloor.org> (raw)
In-Reply-To: <1331924464-18023-1-git-send-email-andi@firstfloor.org>
From: Andi Kleen <ak@linux.intel.com>
Use lockdep_assert_held() for lock checking instead of a strange
homegrown variant. This removes the return for this case, but
that is unlikely to be useful anyways.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
kernel/futex.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/kernel/futex.c b/kernel/futex.c
index 1614be2..a77dda7 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -823,8 +823,9 @@ static void __unqueue_futex(struct futex_q *q)
{
struct futex_hash_bucket *hb;
- if (WARN_ON_SMP(!q->lock_ptr || !spin_is_locked(q->lock_ptr))
- || WARN_ON(plist_node_empty(&q->list)))
+ if (q->lock_ptr)
+ lockdep_assert_held(q->lock_ptr);
+ if (WARN_ON(plist_node_empty(&q->list)))
return;
hb = container_of(q->lock_ptr, struct futex_hash_bucket, lock);
--
1.7.7.6
next prev parent reply other threads:[~2012-03-16 19:03 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-16 19:00 Tree sweep for spin_is_locked misuses and start warning about it Andi Kleen
2012-03-16 19:00 ` [PATCH 01/11] block: use lockdep_assert_held for queue locking Andi Kleen
2012-03-16 19:00 ` [PATCH 02/11] sgi-xp: Use lockdep_assert_held Andi Kleen
2012-03-16 19:11 ` Robin Holt
2012-03-16 19:00 ` [PATCH 03/11] ada152x: Remove broken usage of spin_is_locked Andi Kleen
2012-03-16 19:00 ` [PATCH 04/11] staging/zmem: Use lockdep_assert_held instead " Andi Kleen
2012-03-16 19:00 ` [PATCH 05/11] XFS: Fix lock ASSERT on UP Andi Kleen
2012-03-19 22:47 ` Dave Chinner
2012-03-20 2:28 ` Andi Kleen
2012-03-21 0:44 ` Dave Chinner
2012-03-16 19:00 ` [PATCH 06/11] huge-memory: Use lockdep_assert_held Andi Kleen
2012-03-16 19:44 ` Andrea Arcangeli
2012-03-16 21:18 ` Hugh Dickins
2012-03-16 19:01 ` Andi Kleen [this message]
2012-03-16 19:01 ` [PATCH 08/11] irda: remove spin_is_locked Andi Kleen
2012-03-16 19:01 ` [PATCH 09/11] usb: gadget: f_fs: Remove lock is held before freeing checks Andi Kleen
2012-03-16 19:01 ` [PATCH 10/11] smsc911x: Use lockdep_assert_held instead of home grown buggy construct Andi Kleen
2012-03-16 19:01 ` [PATCH 11/11] checkpatch: Check for spin_is_locked Andi Kleen
2012-03-16 19:22 ` Joe Perches
2012-03-16 20:14 ` Andi Kleen
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