From: Thomas Gleixner <tglx@linutronix.de>
To: Waiman Long <longman@redhat.com>, Marco Elver <elver@google.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
Boqun Feng <boqun.feng@gmail.com>,
linux-kernel@vger.kernel.org
Cc: kasan-dev@googlegroups.com, Mark Rutland <mark.rutland@arm.com>,
"Paul E. McKenney" <paulmck@kernel.org>,
Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: Re: [PATCH] locking/mutex: Mark racy reads of owner->on_cpu
Date: Fri, 17 Dec 2021 22:41:51 +0100 [thread overview]
Message-ID: <87ee6ac3j4.ffs@tglx> (raw)
In-Reply-To: <2f67a2d9-98d6-eabd-fb5e-4c89574ce52c@redhat.com>
On Thu, Dec 02 2021 at 10:46, Waiman Long wrote:
> On 12/2/21 06:53, Marco Elver wrote:
> I would like to see owner_on_cpu() extracted out from
> kernel/locking/rwsem.c into include/linux/sched.h right after
> vcpu_is_preempted(), for instance, and with READ_ONCE() added. Then it
> can be used in mutex.c as well. This problem is common to both mutex and
> rwsem.
And rtmutex.c
prev parent reply other threads:[~2021-12-17 21:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-02 10:12 [PATCH] locking/mutex: Mark racy reads of owner->on_cpu Marco Elver
2021-12-02 11:53 ` Marco Elver
2021-12-02 14:46 ` Peter Zijlstra
2021-12-02 15:46 ` Waiman Long
2021-12-17 21:41 ` Thomas Gleixner [this message]
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