From: Xavier <xavier_qy@163.com>
To: "David Hildenbrand" <david@redhat.com>
Cc: 21cnbao@gmail.com, ryan.roberts@arm.com, dev.jain@arm.com,
ioworker0@gmail.com, akpm@linux-foundation.org,
catalin.marinas@arm.com, gshan@redhat.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, will@kernel.org,
willy@infradead.org, ziy@nvidia.com
Subject: Re:Re: [PATCH v4] arm64/mm: Optimize loop to reduce redundant operations of contpte_ptep_get
Date: Fri, 9 May 2025 17:17:47 +0800 (CST) [thread overview]
Message-ID: <29f1ebb9.8e60.196b45626fb.Coremail.xavier_qy@163.com> (raw)
In-Reply-To: <9ada79ec-f2b4-42bc-84f9-3f7b461ad829@redhat.com>
At 2025-05-08 16:30:14, "David Hildenbrand" <david@redhat.com> wrote:
>On 08.05.25 09:03, Xavier Xia wrote:
>> This commit optimizes the contpte_ptep_get and contpte_ptep_get_lockless
>> function by adding early termination logic. It checks if the dirty and
>> young bits of orig_pte are already set and skips redundant bit-setting
>> operations during the loop. This reduces unnecessary iterations and
>> improves performance.
>>
>> In order to verify the optimization performance, a test function has been
>> designed. The function's execution time and instruction statistics have
>> been traced using perf, and the following are the operation results on a
>> certain Qualcomm mobile phone chip:
>
>For the future, please don't post vN+1 as reply to vN.
I will pay attention to it when I submit it later. Thank you for the reminder.
>
>--
>Cheers,
>
>David / dhildenb
--
Thanks,
Xavier
next prev parent reply other threads:[~2025-05-09 9:18 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-07 9:22 [PATCH v1] mm/contpte: Optimize loop to reduce redundant operations Xavier
2025-04-07 11:29 ` Lance Yang
2025-04-07 12:56 ` Xavier
2025-04-07 13:31 ` Lance Yang
2025-04-07 16:19 ` Dev Jain
2025-04-08 8:58 ` [PATCH v2 0/1] " Xavier
2025-04-08 8:58 ` [PATCH v2 1/1] " Xavier
2025-04-09 4:09 ` Gavin Shan
2025-04-09 15:10 ` Xavier
2025-04-10 0:58 ` Gavin Shan
2025-04-10 2:53 ` Xavier
2025-04-10 3:06 ` Gavin Shan
2025-04-08 9:17 ` [PATCH v1] " Lance Yang
2025-04-09 15:15 ` Xavier
2025-04-10 21:25 ` Barry Song
2025-04-11 12:03 ` David Laight
2025-04-12 7:18 ` Barry Song
2025-04-11 17:30 ` Dev Jain
2025-04-12 5:05 ` Lance Yang
2025-04-12 5:27 ` Xavier
2025-04-14 8:06 ` Ryan Roberts
2025-04-14 8:51 ` Dev Jain
2025-04-14 12:11 ` Ryan Roberts
2025-04-15 8:22 ` [mm/contpte v3 0/1] " Xavier
2025-04-15 8:22 ` [mm/contpte v3 1/1] " Xavier
2025-04-15 9:01 ` [mm/contpte v3] " Markus Elfring
2025-04-16 8:57 ` [mm/contpte v3 1/1] " David Laight
2025-04-16 16:15 ` Xavier
2025-04-16 12:54 ` Ryan Roberts
2025-04-16 16:09 ` Xavier
2025-04-22 9:33 ` Xavier
2025-04-30 23:17 ` Barry Song
2025-05-01 12:39 ` Xavier
2025-05-01 21:19 ` Barry Song
2025-05-01 21:32 ` Barry Song
2025-05-04 2:39 ` Xavier
2025-05-08 1:29 ` Barry Song
2025-05-08 7:03 ` [PATCH v4] arm64/mm: Optimize loop to reduce redundant operations of contpte_ptep_get Xavier Xia
2025-05-08 8:30 ` David Hildenbrand
2025-05-09 9:17 ` Xavier [this message]
2025-05-09 9:25 ` David Hildenbrand
2025-05-09 2:09 ` Barry Song
2025-05-09 9:20 ` Xavier
2025-04-16 2:10 ` [mm/contpte v3 0/1] mm/contpte: Optimize loop to reduce redundant operations Andrew Morton
2025-04-16 3:25 ` Xavier
2025-04-16 12:47 ` Catalin Marinas
2025-04-16 15:08 ` Xavier
2025-04-16 12:48 ` Ryan Roberts
2025-04-16 15:22 ` Xavier
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