From: Anshuman Khandual <anshuman.khandual@arm.com>
To: Yu Zhao <yuzhao@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Nick Piggin <npiggin@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
Joel Fernandes <joel@joelfernandes.org>,
"Kirill A . Shutemov" <kirill@shutemov.name>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH] arm64: mm: enable per pmd page table lock
Date: Tue, 19 Feb 2019 08:38:54 +0530 [thread overview]
Message-ID: <f67b5468-2144-c51f-6cf0-ea7ece93b502@arm.com> (raw)
In-Reply-To: <20190214211642.2200-1-yuzhao@google.com>
On 02/15/2019 02:46 AM, Yu Zhao wrote:
> Switch from per mm_struct to per pmd page table lock by enabling
> ARCH_ENABLE_SPLIT_PMD_PTLOCK. This provides better granularity for
> large system.
>
> I'm not sure if there is contention on mm->page_table_lock. Given
> the option comes at no cost (apart from initializing more spin
> locks), why not enable it now.
>
This has similar changes to what I had posted part of the general page table
page accounting clean up series on arm64 last month.
https://www.spinics.net/lists/arm-kernel/msg701954.html
WARNING: multiple messages have this Message-ID (diff)
From: Anshuman Khandual <anshuman.khandual@arm.com>
To: Yu Zhao <yuzhao@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>
Cc: linux-arch@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>,
linux-kernel@vger.kernel.org, Nick Piggin <npiggin@gmail.com>,
linux-mm@kvack.org,
"Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com>,
Joel Fernandes <joel@joelfernandes.org>,
"Kirill A . Shutemov" <kirill@shutemov.name>,
Andrew Morton <akpm@linux-foundation.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] arm64: mm: enable per pmd page table lock
Date: Tue, 19 Feb 2019 08:38:54 +0530 [thread overview]
Message-ID: <f67b5468-2144-c51f-6cf0-ea7ece93b502@arm.com> (raw)
In-Reply-To: <20190214211642.2200-1-yuzhao@google.com>
On 02/15/2019 02:46 AM, Yu Zhao wrote:
> Switch from per mm_struct to per pmd page table lock by enabling
> ARCH_ENABLE_SPLIT_PMD_PTLOCK. This provides better granularity for
> large system.
>
> I'm not sure if there is contention on mm->page_table_lock. Given
> the option comes at no cost (apart from initializing more spin
> locks), why not enable it now.
>
This has similar changes to what I had posted part of the general page table
page accounting clean up series on arm64 last month.
https://www.spinics.net/lists/arm-kernel/msg701954.html
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next prev parent reply other threads:[~2019-02-19 3:08 UTC|newest]
Thread overview: 120+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-14 21:16 [PATCH] arm64: mm: enable per pmd page table lock Yu Zhao
2019-02-14 21:16 ` Yu Zhao
2019-02-18 15:12 ` Will Deacon
2019-02-18 15:12 ` Will Deacon
2019-02-18 19:49 ` Yu Zhao
2019-02-18 19:49 ` Yu Zhao
2019-02-18 20:48 ` Yu Zhao
2019-02-18 20:48 ` Yu Zhao
2019-02-19 4:09 ` Anshuman Khandual
2019-02-19 4:09 ` Anshuman Khandual
2019-02-18 23:13 ` [PATCH v2 1/3] arm64: mm: use appropriate ctors for page tables Yu Zhao
2019-02-18 23:13 ` Yu Zhao
2019-02-18 23:13 ` [PATCH v2 2/3] arm64: mm: don't call page table ctors for init_mm Yu Zhao
2019-02-18 23:13 ` Yu Zhao
2019-02-26 15:13 ` Mark Rutland
2019-02-26 15:13 ` Mark Rutland
2019-03-09 3:52 ` Yu Zhao
2019-03-09 3:52 ` Yu Zhao
2019-02-18 23:13 ` [PATCH v2 3/3] arm64: mm: enable per pmd page table lock Yu Zhao
2019-02-18 23:13 ` Yu Zhao
2019-02-19 4:21 ` [PATCH v2 1/3] arm64: mm: use appropriate ctors for page tables Anshuman Khandual
2019-02-19 4:21 ` Anshuman Khandual
2019-02-19 5:32 ` Yu Zhao
2019-02-19 5:32 ` Yu Zhao
2019-02-19 6:17 ` Anshuman Khandual
2019-02-19 6:17 ` Anshuman Khandual
2019-02-19 22:28 ` Yu Zhao
2019-02-19 22:28 ` Yu Zhao
2019-02-20 10:27 ` Anshuman Khandual
2019-02-20 10:27 ` Anshuman Khandual
2019-02-20 12:24 ` Matthew Wilcox
2019-02-20 12:24 ` Matthew Wilcox
2019-02-20 20:22 ` Yu Zhao
2019-02-20 20:22 ` Yu Zhao
2019-02-20 20:59 ` Matthew Wilcox
2019-02-20 20:59 ` Matthew Wilcox
2019-02-20 20:59 ` Matthew Wilcox
2019-02-20 1:34 ` Matthew Wilcox
2019-02-20 1:34 ` Matthew Wilcox
2019-02-20 1:34 ` Matthew Wilcox
2019-02-20 3:20 ` Anshuman Khandual
2019-02-20 3:20 ` Anshuman Khandual
2019-02-20 21:03 ` Matthew Wilcox
2019-02-20 21:03 ` Matthew Wilcox
2019-02-20 21:03 ` Matthew Wilcox
2019-02-26 15:12 ` Mark Rutland
2019-02-26 15:12 ` Mark Rutland
2019-03-09 4:01 ` Yu Zhao
2019-03-09 4:01 ` Yu Zhao
2019-03-09 4:01 ` Yu Zhao
2019-03-10 1:19 ` [PATCH v3 " Yu Zhao
2019-03-10 1:19 ` Yu Zhao
2019-03-10 1:19 ` Yu Zhao
2019-03-10 1:19 ` [PATCH v3 2/3] arm64: mm: don't call page table ctors for init_mm Yu Zhao
2019-03-10 1:19 ` Yu Zhao
2019-03-10 1:19 ` Yu Zhao
2019-03-10 1:19 ` [PATCH v3 3/3] arm64: mm: enable per pmd page table lock Yu Zhao
2019-03-10 1:19 ` Yu Zhao
2019-03-10 1:19 ` Yu Zhao
2019-03-11 8:28 ` Anshuman Khandual
2019-03-11 8:28 ` Anshuman Khandual
2019-03-11 23:10 ` Yu Zhao
2019-03-11 23:10 ` Yu Zhao
2019-03-11 12:12 ` Mark Rutland
2019-03-11 12:12 ` Mark Rutland
2019-03-11 12:57 ` Anshuman Khandual
2019-03-11 12:57 ` Anshuman Khandual
2019-03-11 23:11 ` Yu Zhao
2019-03-11 23:11 ` Yu Zhao
2019-03-11 23:11 ` Yu Zhao
2019-03-11 7:45 ` [PATCH v3 1/3] arm64: mm: use appropriate ctors for page tables Anshuman Khandual
2019-03-11 7:45 ` Anshuman Khandual
2019-03-11 23:23 ` Yu Zhao
2019-03-11 23:23 ` Yu Zhao
2019-03-12 0:57 ` [PATCH v4 1/4] " Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 0:57 ` [PATCH v4 2/4] arm64: mm: don't call page table ctors for init_mm Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 0:57 ` [PATCH v4 3/4] arm64: mm: call ctor for stage2 pmd page Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 2:19 ` [PATCH] KVM: ARM: Remove pgtable page standard functions from stage-2 page tables Anshuman Khandual
2019-03-12 2:19 ` Anshuman Khandual
2019-03-12 2:40 ` Yu Zhao
2019-03-12 2:40 ` Yu Zhao
2019-03-12 10:37 ` Suzuki K Poulose
2019-03-12 10:37 ` Suzuki K Poulose
2019-03-12 11:31 ` Anshuman Khandual
2019-03-12 11:31 ` Anshuman Khandual
2019-03-12 11:43 ` Suzuki K Poulose
2019-03-12 11:43 ` Suzuki K Poulose
2019-03-12 13:25 ` [PATCH V2] " Anshuman Khandual
2019-03-12 13:25 ` Anshuman Khandual
2019-04-01 16:16 ` Will Deacon
2019-04-01 16:16 ` Will Deacon
2019-04-01 16:16 ` Will Deacon
2019-04-01 18:34 ` Yu Zhao
2019-04-01 18:34 ` Yu Zhao
2019-04-01 18:34 ` Yu Zhao
2019-04-02 9:03 ` Will Deacon
2019-04-02 9:03 ` Will Deacon
2019-04-02 9:03 ` Will Deacon
2019-04-08 14:22 ` Will Deacon
2019-04-08 14:22 ` Will Deacon
2019-04-08 14:22 ` Will Deacon
2019-04-08 14:22 ` Will Deacon
2019-04-08 17:18 ` Yu Zhao
2019-04-08 17:18 ` Yu Zhao
2019-04-08 17:18 ` Yu Zhao
2019-04-08 9:09 ` Marc Zyngier
2019-04-08 9:09 ` Marc Zyngier
2019-04-08 9:09 ` Marc Zyngier
2019-04-08 9:09 ` Marc Zyngier
2019-03-12 0:57 ` [PATCH v4 4/4] arm64: mm: enable per pmd page table lock Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-02-19 3:08 ` Anshuman Khandual [this message]
2019-02-19 3:08 ` [PATCH] " Anshuman Khandual
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