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From: Will Deacon <will.deacon@arm.com>
To: linux-kernel@vger.kernel.org
Cc: peterz@infradead.org, mingo@redhat.com,
	Will Deacon <will.deacon@arm.com>
Subject: [PATCH 0/2] A couple of qspinlock fixes
Date: Tue, 13 Feb 2018 13:22:55 +0000	[thread overview]
Message-ID: <1518528177-19169-1-git-send-email-will.deacon@arm.com> (raw)

Hi all,

Here are a couple of fixes for qspinlock issues I've found by code
inspection whilst investigating the possibility of enabling this for
arm64. The first patch fixes a problem with unusual hardware re-ordering
whilst the second fixes a problem with unusual compiler re-ordering.

Cheers,

Will

--->8

Will Deacon (2):
  locking/qspinlock: Ensure node is initialised before updating
    prev->next
  locking/qspinlock: Ensure node->count is updated before initialising
    node

 kernel/locking/qspinlock.c | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

-- 
2.1.4

             reply	other threads:[~2018-02-13 13:23 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-13 13:22 Will Deacon [this message]
2018-02-13 13:22 ` [PATCH 1/2] locking/qspinlock: Ensure node is initialised before updating prev->next Will Deacon
2018-02-13 15:27   ` [tip:locking/urgent] " tip-bot for Will Deacon
2018-02-13 13:22 ` [PATCH 2/2] locking/qspinlock: Ensure node->count is updated before initialising node Will Deacon
2018-02-13 15:27   ` [tip:locking/urgent] " tip-bot for Will Deacon
2018-02-13 13:45 ` [PATCH 0/2] A couple of qspinlock fixes Peter Zijlstra

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