From: "David Hildenbrand (Arm)" <david@kernel.org>
To: xu.xin16@zte.com.cn, akpm@linux-foundation.org
Cc: chengming.zhou@linux.dev, hughd@google.com,
wang.yaxin@zte.com.cn, yang.yang29@zte.com.cn,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 0/2] KSM: Optimizations for rmap_walk_ksm
Date: Fri, 6 Feb 2026 11:47:22 +0100 [thread overview]
Message-ID: <a97d16c0-b31e-4f7a-9fa4-171ac80b33a8@kernel.org> (raw)
In-Reply-To: <20260206175609696_A7uH3a1F7VmQN-iTzjC3@zte.com.cn>
On 2/6/26 10:56, xu.xin16@zte.com.cn wrote:
> From: xu xin <xu.xin16@zte.com.cn>
>
> There are two perfomance optimization patches for rmap_walk_ksm.
>
> The patch [1/2] move the initializaion of addr from the position inside loop
> to the position before the loop, since the variable will not change in the
> loop.
>
> The patch [2/2] optimize rmap_walk_ksm by passing a suitable page offset range
> to the anon_vma_interval_tree_foreach loop to reduce ineffective checks.
>
> The metric performance is seen at patch[2/2].
For the future, we usually describe what changed between versions
briefly in the cover letter. Thanks!
--
Cheers,
David
next prev parent reply other threads:[~2026-02-06 10:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-06 9:56 xu.xin16
2026-02-06 9:57 ` [PATCH v2 1/2] ksm: Initialize the addr only once in rmap_walk_ksm xu.xin16
2026-02-06 10:46 ` David Hildenbrand (Arm)
2026-02-06 10:01 ` [PATCH v2 2/2] ksm: Optimize rmap_walk_ksm by passing a suitable address range xu.xin16
2026-02-06 11:01 ` David Hildenbrand (Arm)
2026-02-06 16:15 ` xu.xin16
2026-02-06 10:47 ` David Hildenbrand (Arm) [this message]
-- strict thread matches above, loose matches on Subject: below --
2026-02-06 9:55 [PATCH v2 0/2] KSM: Optimizations for rmap_walk_ksm xu.xin16
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