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

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Message-ID: <6d5bfce0-b01d-b46b-3a9f-5291455f3022@huawei.com>
Date: Fri, 1 Nov 2024 16:27:23 +0800
From: Li Qiang <liqiang64@...wei.com>
To: <dust.li@...ux.alibaba.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



在 2024/11/1 14:50, Dust Li 写道:
> 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
> 

I optimized it through review. I re-sent this patch based on the
net-next repo. It contains some of my own test data. Please check it. :-)

> Best regards,
> Dust
> 
> .
> 

-- 
Cheers,
Li Qiang