From: Waiman Long <longman@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Yongji Xie <elohimes@gmail.com>,
dave@stgolabs.net, mingo@redhat.com, will.deacon@arm.com,
linux-kernel@vger.kernel.org, Xie Yongji <xieyongji@baidu.com>,
zhangyu31@baidu.com, liuqi16@baidu.com, yuanlinsi01@baidu.com,
nixun@baidu.com, lilin24@baidu.com,
andrea.parri@amarulasolutions.com
Subject: Re: [RFC] locking/rwsem: Avoid issuing wakeup before setting the reader waiter to nil
Date: Mon, 7 Jan 2019 10:35:31 -0500 [thread overview]
Message-ID: <904530fd-10b6-208c-4baf-faf382f74a7f@redhat.com> (raw)
In-Reply-To: <20190107153125.GL2218@hirez.programming.kicks-ass.net>
On 01/07/2019 10:31 AM, Peter Zijlstra wrote:
> On Mon, Jan 07, 2019 at 09:35:09AM -0500, Waiman Long wrote:
>> On 12/17/2018 08:12 AM, Yongji Xie wrote:
>>> On Mon, 17 Dec 2018 at 19:37, Peter Zijlstra <peterz@infradead.org> wrote:
>>>> On Mon, Dec 10, 2018 at 11:12:52PM +0800, Yongji Xie wrote:
>>>>> Hi Peter,
>>>>>
>>>>> Please let me know If there is any progress on this issue. Thank you!
>>>> Right, sorry, my brain was filled with snot and didn't want to make
>>>> sense of things.
>>>>
>>>> I've put some patches here:
>>>>
>>>> git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/core
>>>>
>>>> Could you have a look?
>>> That looks good to me. Thank you!
>>>
>>> Thanks,
>>> Yongji
>> Peter,
>>
>> Are you planning to move the patch over to tip as the merge window has
>> just closed?
> Sorry; yes, probably, I just got back from a 2 week holiday and am
> somewhat scrambling to remember where I left off and what all landed in
> my inbox.
Happy New Year!
I have bug reports on some mysterious rwsem related hangs which I think
can probably be fixed by this patch. That is why I am looking forward
for it to land into the tip tree.
Thanks,
Longman
next prev parent reply other threads:[~2019-01-07 15:35 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-29 12:50 [RFC] locking/rwsem: Avoid issuing wakeup before setting the reader waiter to nil Yongji Xie
2018-11-29 13:12 ` Peter Zijlstra
2018-11-29 13:44 ` Peter Zijlstra
2018-11-29 14:02 ` Yongji Xie
2018-11-29 18:43 ` Davidlohr Bueso
2018-11-29 18:49 ` Waiman Long
2018-11-29 15:21 ` Waiman Long
2018-11-29 15:29 ` Waiman Long
2018-11-29 16:06 ` Peter Zijlstra
2018-11-29 17:02 ` Waiman Long
2018-11-29 17:27 ` Peter Zijlstra
2018-11-29 17:58 ` Waiman Long
2018-11-29 18:13 ` Peter Zijlstra
2018-11-29 18:17 ` Davidlohr Bueso
2018-11-29 18:08 ` Peter Zijlstra
2018-11-29 18:26 ` Waiman Long
2018-11-29 18:31 ` Will Deacon
2018-11-29 18:34 ` Waiman Long
2018-11-29 22:05 ` Peter Zijlstra
2018-11-30 9:34 ` 答复: " Liu,Qi(ACU-T1)
2018-11-30 14:15 ` Peter Zijlstra
2018-11-29 21:30 ` Davidlohr Bueso
2018-11-29 21:34 ` Davidlohr Bueso
2018-11-29 22:17 ` Peter Zijlstra
2018-11-30 9:30 ` Andrea Parri
2018-12-03 5:31 ` [PATCH -tip] kernel/sched,wake_q: Branch predict wake_q_add() cmpxchg Davidlohr Bueso
2018-12-03 16:10 ` Waiman Long
2019-01-21 11:28 ` [tip:locking/core] sched/wake_q: Add branch prediction hint to " tip-bot for Davidlohr Bueso
2018-12-10 15:12 ` [RFC] locking/rwsem: Avoid issuing wakeup before setting the reader waiter to nil Yongji Xie
2018-12-17 11:37 ` Peter Zijlstra
2018-12-17 13:12 ` Yongji Xie
2019-01-07 14:35 ` Waiman Long
2019-01-07 15:31 ` Peter Zijlstra
2019-01-07 15:35 ` Waiman Long [this message]
2018-12-17 20:53 ` Davidlohr Bueso
2018-12-18 13:10 ` Peter Zijlstra
2018-12-18 13:14 ` Peter Zijlstra
2018-12-18 17:27 ` Davidlohr Bueso
2018-12-18 18:54 ` [PATCH v2] sched/wake_q: Reduce reference counting for special users Davidlohr Bueso
2018-12-18 19:17 ` Waiman Long
2018-12-18 19:30 ` Davidlohr Bueso
2018-12-18 19:39 ` Davidlohr Bueso
2018-12-18 19:53 ` [PATCH v4] " Davidlohr Bueso
2018-12-18 20:35 ` Waiman Long
2019-01-21 16:02 ` Davidlohr Bueso
2019-01-22 8:55 ` Peter Zijlstra
2019-02-04 8:57 ` [tip:locking/core] " tip-bot for Davidlohr Bueso
2019-02-07 19:30 ` Davidlohr Bueso
2019-02-12 14:14 ` Daniel Vacek
2019-01-21 11:28 ` [tip:locking/core] locking/rwsem: Fix (possible) missed wakeup tip-bot for Xie Yongji
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