From: Peter Zijlstra <peterz@infradead.org>
To: Waiman Long <longman@redhat.com>
Cc: "Ingo Molnar" <mingo@redhat.com>, "Will Deacon" <will@kernel.org>,
"Boqun Feng" <boqun.feng@gmail.com>,
linux-kernel@vger.kernel.org, john.p.donnelly@oracle.com,
"Hillf Danton" <hdanton@sina.com>,
"Mukesh Ojha" <quic_mojha@quicinc.com>,
"Ting11 Wang 王婷" <wangting11@xiaomi.com>
Subject: Re: [PATCH v6 0/6] lockinig/rwsem: Fix rwsem bugs & enable true lock handoff
Date: Sun, 22 Jan 2023 14:46:48 +0100 [thread overview]
Message-ID: <Y80+SLxrdEVyJHMo@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20221118022016.462070-1-longman@redhat.com>
On Thu, Nov 17, 2022 at 09:20:10PM -0500, Waiman Long wrote:
> Waiman Long (6):
> locking/rwsem: Prevent non-first waiter from spinning in down_write() slowpath
> locking/rwsem: Disable preemption at all down_read*() and up_read() code paths
> locking/rwsem: Disable preemption at all down_write*() and up_write() code paths
> locking/rwsem: Change waiter->hanodff_set to a handoff_state enum
After all these we still have down_read_non_owner() using
__rwsem_set_reader_owner() outside of the preempt_disable() region.
Now, let me go stare at this one:
> locking/rwsem: Enable direct rwsem lock handoff
next prev parent reply other threads:[~2023-01-22 13:47 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-18 2:20 [PATCH v6 0/6] lockinig/rwsem: Fix rwsem bugs & enable true lock handoff Waiman Long
2022-11-18 2:20 ` [PATCH v6 1/6] locking/rwsem: Prevent non-first waiter from spinning in down_write() slowpath Waiman Long
2022-12-16 15:02 ` Jiri Wiesner
2023-01-20 22:58 ` Waiman Long
2022-11-18 2:20 ` [PATCH v6 2/6] locking/rwsem: Disable preemption at all down_read*() and up_read() code paths Waiman Long
2022-12-16 15:03 ` Jiri Wiesner
2022-11-18 2:20 ` [PATCH v6 3/6] locking/rwsem: Disable preemption at all down_write*() and up_write() " Waiman Long
2022-12-16 15:03 ` Jiri Wiesner
2022-11-18 2:20 ` [PATCH v6 4/6] locking/rwsem: Change waiter->hanodff_set to a handoff_state enum Waiman Long
2022-11-18 2:20 ` [PATCH v6 5/6] locking/rwsem: Enable direct rwsem lock handoff Waiman Long
2023-01-23 14:59 ` Peter Zijlstra
2023-01-23 17:30 ` Waiman Long
2023-01-23 22:07 ` Waiman Long
2023-01-24 12:58 ` Peter Zijlstra
2023-01-24 12:29 ` Peter Zijlstra
2023-01-25 1:53 ` Waiman Long
2022-11-18 2:20 ` [PATCH v6 6/6] locking/rwsem: Update handoff lock events tracking Waiman Long
2023-01-17 20:53 ` [PATCH v6 0/6] lockinig/rwsem: Fix rwsem bugs & enable true lock handoff Waiman Long
2023-01-22 13:46 ` Peter Zijlstra [this message]
2023-01-23 3:40 ` Waiman Long
2023-01-23 21:10 ` Waiman Long
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