From: "tip-bot2 for Davidlohr Bueso" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: Davidlohr Bueso <dbueso@suse.de>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>, Will Deacon <will@kernel.org>,
Waiman Long <longman@redhat.com>, x86 <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: [tip: locking/core] locking/percpu-rwsem: Add might_sleep() for writer locking
Date: Tue, 11 Feb 2020 12:48:21 -0000 [thread overview]
Message-ID: <158142530179.411.17952389583883812912.tip-bot2@tip-bot2> (raw)
In-Reply-To: <20200108013305.7732-1-dave@stgolabs.net>
The following commit has been merged into the locking/core branch of tip:
Commit-ID: 41f0e29190ac9e38099a37abd1a8a4cb1dc21233
Gitweb: https://git.kernel.org/tip/41f0e29190ac9e38099a37abd1a8a4cb1dc21233
Author: Davidlohr Bueso <dave@stgolabs.net>
AuthorDate: Tue, 07 Jan 2020 17:33:04 -08:00
Committer: Ingo Molnar <mingo@kernel.org>
CommitterDate: Tue, 11 Feb 2020 13:11:02 +01:00
locking/percpu-rwsem: Add might_sleep() for writer locking
We are missing this annotation in percpu_down_write(). Correct
this.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Waiman Long <longman@redhat.com>
Link: https://lkml.kernel.org/r/20200108013305.7732-1-dave@stgolabs.net
---
kernel/locking/percpu-rwsem.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/locking/percpu-rwsem.c b/kernel/locking/percpu-rwsem.c
index 8048a9a..183a3aa 100644
--- a/kernel/locking/percpu-rwsem.c
+++ b/kernel/locking/percpu-rwsem.c
@@ -212,6 +212,7 @@ static bool readers_active_check(struct percpu_rw_semaphore *sem)
void percpu_down_write(struct percpu_rw_semaphore *sem)
{
+ might_sleep();
rwsem_acquire(&sem->dep_map, 0, 0, _RET_IP_);
/* Notify readers to take the slow path. */
next prev parent reply other threads:[~2020-02-11 12:49 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-13 10:21 [PATCH 0/5] locking: Percpu-rwsem rewrite Peter Zijlstra
2019-11-13 10:21 ` [PATCH 1/5] locking/percpu-rwsem, lockdep: Make percpu-rwsem use its own lockdep_map Peter Zijlstra
2019-11-15 20:39 ` Davidlohr Bueso
2020-01-08 1:33 ` [PATCH] locking/percpu-rwsem: Add might_sleep() for writer locking Davidlohr Bueso
2020-01-08 1:33 ` Davidlohr Bueso
2020-02-11 12:48 ` tip-bot2 for Davidlohr Bueso [this message]
2019-11-13 10:21 ` [PATCH 2/5] locking/percpu-rwsem: Convert to bool Peter Zijlstra
2019-11-13 10:21 ` [PATCH 3/5] locking/percpu-rwsem: Move __this_cpu_inc() into the slowpath Peter Zijlstra
2019-11-13 10:21 ` [PATCH 4/5] locking/percpu-rwsem: Extract __percpu_down_read_trylock() Peter Zijlstra
2019-11-18 16:28 ` Oleg Nesterov
2019-11-13 10:21 ` [PATCH 5/5] locking/percpu-rwsem: Remove the embedded rwsem Peter Zijlstra
2019-11-18 19:53 ` Davidlohr Bueso
2019-11-18 23:19 ` Davidlohr Bueso
2019-12-17 10:45 ` Peter Zijlstra
2019-12-17 10:35 ` Peter Zijlstra
2019-11-18 21:52 ` Waiman Long
2019-12-17 10:28 ` Peter Zijlstra
2019-11-19 13:50 ` Waiman Long
2019-11-19 15:58 ` Oleg Nesterov
2019-11-19 16:28 ` Waiman Long
2019-12-17 10:26 ` Peter Zijlstra
2019-12-17 10:28 ` Peter Zijlstra
2019-11-15 17:14 ` [PATCH 0/5] locking: Percpu-rwsem rewrite Juri Lelli
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