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From: Peter Zijlstra <peterz@infradead.org>
To: 焦晓冬 <milestonejxd@gmail.com>
Cc: Boqun Feng <boqun.feng@gmail.com>,
	linux-kernel@vger.kernel.org,
	Alan Stern <stern@rowland.harvard.edu>,
	will.deacon@arm.com, torvalds@linux-foundation.org,
	npiggin@gmail.com, mingo@kernel.org, mpe@ellerman.id.au,
	oleg@redhat.com, benh@kernel.crashing.org,
	Paul McKenney <paulmck@linux.vnet.ibm.com>
Subject: Re: smp_mb__after_spinlock requirement too strong?
Date: Mon, 12 Mar 2018 14:31:35 +0100	[thread overview]
Message-ID: <20180312133135.GJ4064@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <CAJDTihyP96H6XTh5M17uMbMHxz8YjFZ89u0YsBGsRpR+BaEU_Q@mail.gmail.com>

On Mon, Mar 12, 2018 at 05:13:03PM +0800, 焦晓冬 wrote:

> If the fixed comment could point out where this RCsc is used, it will be great.

The one that comes to mind first is RCU-sched, that relies on a context
switch implying a full smp_mb(). But I think there's more..

  reply	other threads:[~2018-03-12 13:31 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-11  7:55 smp_mb__after_spinlock requirement too strong? 焦晓冬
2018-03-12  5:44 ` Boqun Feng
2018-03-12  8:18   ` 焦晓冬
2018-03-12  8:56     ` Boqun Feng
2018-03-12  8:56       ` Peter Zijlstra
2018-03-12  9:13         ` 焦晓冬
2018-03-12 13:31           ` Peter Zijlstra [this message]
2018-03-12 13:24     ` Andrea Parri
2018-03-12 14:10       ` 焦晓冬

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