linux-kernel - Re: [PATCH] net/smc: Optimize the search method of reused buf

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Message-ID: <20241101065016.GF101007@linux.alibaba.com>
Date: Fri, 1 Nov 2024 14:50:16 +0800
From: Dust Li <dust.li@...ux.alibaba.com>
To: liqiang <liqiang64@...wei.com>, wenjia@...ux.ibm.com,
	jaka@...ux.ibm.com, alibuda@...ux.alibaba.com,
	tonylu@...ux.alibaba.com, guwen@...ux.alibaba.com
Cc: linux-s390@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, luanjianhai@...wei.com,
	zhangxuzhou4@...wei.com, dengguangxing@...wei.com,
	gaochao24@...wei.com
Subject: Re: [PATCH] net/smc: Optimize the search method of reused buf_desc

On 2024-10-29 14:54:15, liqiang wrote:
>We create a lock-less link list for the currently 
>idle reusable smc_buf_desc.
>
>When the 'used' filed mark to 0, it is added to 
>the lock-less linked list. 
>
>When a new connection is established, a suitable 
>element is obtained directly, which eliminates the 
>need for traversal and search, and does not require 
>locking resource.
>
>A lock-free linked list is a linked list that uses 
>atomic operations to optimize the producer-consumer model.

Do you see any performance issues without this lock-less linked list ?
Under what test case ? Any performance numbers would be welcome

Best regards,
Dust