From: awallis@codeaurora•org (Adam Wallis)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v3 0/5] Switch arm64 over to qrwlock
Date: Thu, 12 Oct 2017 09:16:33 -0400 [thread overview]
Message-ID: <53399b22-8062-aa06-8569-e3fb0ae70ff0@codeaurora.org> (raw)
In-Reply-To: <1507810851-306-1-git-send-email-will.deacon@arm.com>
On 10/12/2017 8:20 AM, Will Deacon wrote:
> Hello,
>
> This is version three of the patches previously posted here:
>
> v1: http://lists.infradead.org/pipermail/linux-arm-kernel/2017-October/534666.html
> v2: http://lists.infradead.org/pipermail/linux-arm-kernel/2017-October/534981.html
>
> Changes since v2 include:
>
> * Drop unused cnt argument
> * Fix typo in UNLOCK Kconfig inlining options
> * Added Tested-by tags
>
> Thanks to all of those who provided review and testing feedback!
>
> Will
>
> --->8
>
> Will Deacon (5):
> kernel/locking: Use struct qrwlock instead of struct __qrwlock
> locking/atomic: Add atomic_cond_read_acquire
> kernel/locking: Use atomic_cond_read_acquire when spinning in qrwlock
> arm64: locking: Move rwlock implementation over to qrwlocks
> kernel/locking: Prevent slowpath writers getting held up by fastpath
>
> arch/arm64/Kconfig | 17 ++++
> arch/arm64/include/asm/Kbuild | 1 +
> arch/arm64/include/asm/spinlock.h | 164 +-------------------------------
> arch/arm64/include/asm/spinlock_types.h | 6 +-
> include/asm-generic/atomic-long.h | 3 +
> include/asm-generic/qrwlock.h | 37 ++-----
> include/asm-generic/qrwlock_types.h | 15 ++-
> include/linux/atomic.h | 4 +
> kernel/locking/qrwlock.c | 86 +++--------------
> 9 files changed, 61 insertions(+), 272 deletions(-)
>
Will, I see the same performance improvements that I was getting in v2 of the
patch. I will continue to run these patches on multiple systems over the next
few weeks, months for stability/functionality testing as well.
Tested-by: Adam Wallis <awallis@codeaurora•org>
--
Adam Wallis
Qualcomm Datacenter Technologies as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.
next prev parent reply other threads:[~2017-10-12 13:16 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-12 12:20 [PATCH v3 0/5] Switch arm64 over to qrwlock Will Deacon
2017-10-12 12:20 ` [PATCH v3 1/5] kernel/locking: Use struct qrwlock instead of struct __qrwlock Will Deacon
2017-10-12 12:20 ` [PATCH v3 2/5] locking/atomic: Add atomic_cond_read_acquire Will Deacon
2017-10-12 12:20 ` [PATCH v3 3/5] kernel/locking: Use atomic_cond_read_acquire when spinning in qrwlock Will Deacon
2017-10-12 12:20 ` [PATCH v3 4/5] arm64: locking: Move rwlock implementation over to qrwlocks Will Deacon
2017-10-12 12:20 ` [PATCH v3 5/5] kernel/locking: Prevent slowpath writers getting held up by fastpath Will Deacon
2017-10-12 13:16 ` Adam Wallis [this message]
2017-10-19 16:53 ` [PATCH v3 0/5] Switch arm64 over to qrwlock Will Deacon
2017-10-24 14:48 ` Will Deacon
2017-10-24 15:40 ` Ingo Molnar
2017-10-25 8:36 ` Peter Zijlstra
2017-10-28 6:10 ` chengjian (D)
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