From: Uladzislau Rezki <urezki@gmail.com>
To: Ryan Roberts <ryan.roberts@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Pasha Tatashin <pasha.tatashin@soleen.com>,
Andrew Morton <akpm@linux-foundation.org>,
Uladzislau Rezki <urezki@gmail.com>,
Christoph Hellwig <hch@infradead.org>,
David Hildenbrand <david@redhat.com>,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
Mark Rutland <mark.rutland@arm.com>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Alexandre Ghiti <alexghiti@rivosinc.com>,
Kevin Brodsky <kevin.brodsky@arm.com>,
linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 00/11] Perf improvements for hugetlb and vmalloc on arm64
Date: Thu, 27 Mar 2025 13:16:01 +0100 [thread overview]
Message-ID: <Z-VBgcl9LJGlEzy2@pc636> (raw)
In-Reply-To: <20250304150444.3788920-1-ryan.roberts@arm.com>
On Tue, Mar 04, 2025 at 03:04:30PM +0000, Ryan Roberts wrote:
> Hi All,
>
> This is v3 of a series to improve performance for hugetlb and vmalloc on arm64.
> Although some of these patches are core-mm, advice from Andrew was to go via the
> arm64 tree. Hopefully I can get some ACKs from mm folks.
>
> The 2 key performance improvements are 1) enabling the use of contpte-mapped
> blocks in the vmalloc space when appropriate (which reduces TLB pressure). There
> were already hooks for this (used by powerpc) but they required some tidying and
> extending for arm64. And 2) batching up barriers when modifying the vmalloc
> address space for upto 30% reduction in time taken in vmalloc().
>
> vmalloc() performance was measured using the test_vmalloc.ko module. Tested on
> Apple M2 and Ampere Altra. Each test had loop count set to 500000 and the whole
> test was repeated 10 times.
>
I will have a look and review just give me some time :)
--
Uladzislau Rezki
next prev parent reply other threads:[~2025-03-27 12:18 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-04 15:04 [PATCH v3 00/11] Perf improvements for hugetlb and vmalloc on arm64 Ryan Roberts
2025-03-04 15:04 ` [PATCH v3 01/11] arm64: hugetlb: Cleanup huge_pte size discovery mechanisms Ryan Roberts
2025-04-03 20:46 ` Catalin Marinas
2025-04-04 3:03 ` Anshuman Khandual
2025-03-04 15:04 ` [PATCH v3 02/11] arm64: hugetlb: Refine tlb maintenance scope Ryan Roberts
2025-04-03 20:47 ` Catalin Marinas
2025-04-04 3:50 ` Anshuman Khandual
2025-03-04 15:04 ` [PATCH v3 03/11] mm/page_table_check: Batch-check pmds/puds just like ptes Ryan Roberts
2025-03-26 14:48 ` Pasha Tatashin
2025-03-26 14:54 ` Ryan Roberts
2025-04-03 20:46 ` Catalin Marinas
2025-03-04 15:04 ` [PATCH v3 04/11] arm64/mm: Refactor __set_ptes() and __ptep_get_and_clear() Ryan Roberts
2025-03-06 5:08 ` kernel test robot
2025-03-06 11:54 ` Ryan Roberts
2025-04-14 16:25 ` Catalin Marinas
2025-03-04 15:04 ` [PATCH v3 05/11] arm64: hugetlb: Use set_ptes_anysz() and ptep_get_and_clear_anysz() Ryan Roberts
2025-03-05 16:00 ` kernel test robot
2025-03-05 16:32 ` Ryan Roberts
2025-04-03 20:47 ` Catalin Marinas
2025-03-04 15:04 ` [PATCH v3 06/11] arm64/mm: Hoist barriers out of set_ptes_anysz() loop Ryan Roberts
2025-04-03 20:46 ` Catalin Marinas
2025-04-04 4:11 ` Anshuman Khandual
2025-03-04 15:04 ` [PATCH v3 07/11] mm/vmalloc: Warn on improper use of vunmap_range() Ryan Roberts
2025-03-27 13:05 ` Uladzislau Rezki
2025-03-04 15:04 ` [PATCH v3 08/11] mm/vmalloc: Gracefully unmap huge ptes Ryan Roberts
2025-03-04 15:04 ` [PATCH v3 09/11] arm64/mm: Support huge pte-mapped pages in vmap Ryan Roberts
2025-03-04 15:04 ` [PATCH v3 10/11] mm/vmalloc: Enter lazy mmu mode while manipulating vmalloc ptes Ryan Roberts
2025-03-27 13:06 ` Uladzislau Rezki
2025-04-03 20:47 ` Catalin Marinas
2025-04-04 4:54 ` Anshuman Khandual
2025-03-04 15:04 ` [PATCH v3 11/11] arm64/mm: Batch barriers when updating kernel mappings Ryan Roberts
2025-04-04 6:02 ` Anshuman Khandual
2025-04-14 17:38 ` Catalin Marinas
2025-04-14 18:28 ` Ryan Roberts
2025-04-15 10:51 ` Catalin Marinas
2025-04-15 17:28 ` Ryan Roberts
2025-03-27 12:16 ` Uladzislau Rezki [this message]
2025-03-27 13:46 ` [PATCH v3 00/11] Perf improvements for hugetlb and vmalloc on arm64 Ryan Roberts
2025-04-14 13:56 ` Ryan Roberts
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