From: paulmck@linux.vnet.ibm.com (Paul E. McKenney)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm64: spinlock: serialise spin_unlock_wait against concurrent lockers
Date: Fri, 4 Dec 2015 08:13:55 -0800 [thread overview]
Message-ID: <20151204161355.GD28602@linux.vnet.ibm.com> (raw)
In-Reply-To: <20151204093626.GF17308@twins.programming.kicks-ass.net>
On Fri, Dec 04, 2015 at 10:36:26AM +0100, Peter Zijlstra wrote:
> On Thu, Dec 03, 2015 at 09:22:07AM -0800, Paul E. McKenney wrote:
> > On the added MBs,
> > the only alternative I have been able to come up with has even more MBs,
> > as in on every lock acquisition. If I am missing something, please do
> > not keep it a secret!
>
> You're right. And I suppose mpe is still on the fence wrt switching PPC
> over to RCsc lock order.. which would be all those extra MBs you talk
> about.
Yes, I would like to avoid forcing that choice on him.
Thanx, Paul
next prev parent reply other threads:[~2015-12-04 16:13 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-27 11:44 [PATCH] arm64: spinlock: serialise spin_unlock_wait against concurrent lockers Will Deacon
2015-11-30 15:58 ` Peter Zijlstra
2015-11-30 18:21 ` Paul E. McKenney
2015-12-01 16:40 ` Will Deacon
2015-12-03 0:11 ` Paul E. McKenney
2015-12-03 13:28 ` Peter Zijlstra
2015-12-03 16:32 ` Will Deacon
2015-12-03 17:22 ` Paul E. McKenney
2015-12-04 9:21 ` Peter Zijlstra
2015-12-04 16:07 ` Paul E. McKenney
2015-12-04 16:24 ` Will Deacon
2015-12-04 16:44 ` Paul E. McKenney
2015-12-06 7:37 ` Boqun Feng
2015-12-06 19:23 ` Paul E. McKenney
2015-12-06 23:28 ` Boqun Feng
2015-12-07 0:00 ` Paul E. McKenney
2015-12-07 0:45 ` Boqun Feng
2015-12-07 10:34 ` Peter Zijlstra
2015-12-07 15:45 ` Paul E. McKenney
2015-12-08 8:42 ` Boqun Feng
2015-12-08 19:17 ` Paul E. McKenney
2015-12-09 6:43 ` Boqun Feng
2015-12-04 9:36 ` Peter Zijlstra
2015-12-04 16:13 ` Paul E. McKenney [this message]
2015-12-07 2:12 ` Michael Ellerman
2015-12-06 8:16 ` Boqun Feng
2015-12-06 19:27 ` Paul E. McKenney
2015-12-07 0:26 ` Boqun Feng
2015-12-11 8:09 ` Boqun Feng
2015-12-11 9:46 ` Will Deacon
2015-12-11 12:20 ` Boqun Feng
2015-12-11 13:42 ` Paul E. McKenney
2015-12-11 13:54 ` Will Deacon
2015-12-01 0:40 ` Boqun Feng
2015-12-01 16:32 ` Will Deacon
2015-12-02 9:40 ` Boqun Feng
2015-12-02 11:16 ` Boqun Feng
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