linux-kernel - Re: [PATCH v3] delayaccy/sched: add SOFTIRQ delay

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <C126DFBF-863E-46AB-BD62-A9E720B3E68F@didiglobal.com>
Date: Tue, 16 Sep 2025 09:12:39 +0000
From: 张元瀚 Tio Zhang <tiozhang@...iglobal.com>
To: "wang.yaxin@....com.cn" <wang.yaxin@....com.cn>, "peterz@...radead.org"
	<peterz@...radead.org>
CC: "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"fan.yu9@....com.cn" <fan.yu9@....com.cn>, "corbet@....net" <corbet@....net>,
	"bsingharora@...il.com" <bsingharora@...il.com>, "yang.yang29@....com.cn"
	<yang.yang29@....com.cn>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "linux-doc@...r.kernel.org"
	<linux-doc@...r.kernel.org>, "mingo@...hat.com" <mingo@...hat.com>,
	"peterz@...radead.org" <peterz@...radead.org>, "juri.lelli@...hat.com"
	<juri.lelli@...hat.com>, "vincent.guittot@...aro.org"
	<vincent.guittot@...aro.org>, "dietmar.eggemann@....com"
	<dietmar.eggemann@....com>, "rostedt@...dmis.org" <rostedt@...dmis.org>,
	"bsegall@...gle.com" <bsegall@...gle.com>, "mgorman@...e.de"
	<mgorman@...e.de>, "vschneid@...hat.com" <vschneid@...hat.com>,
	"jiang.kun2@....com.cn" <jiang.kun2@....com.cn>, "xu.xin16@....com.cn"
	<xu.xin16@....com.cn>, "zyhtheonly@...il.com" <zyhtheonly@...il.com>,
	"zyhtheonly@...h.net" <zyhtheonly@...h.net>
Subject: Re: [PATCH v3] delayaccy/sched: add SOFTIRQ delay


>>Intro SOFTIRQ delay, so we can separate softirq as SOFTIRQ delay
>>and hardirq as {IRQ - SOFTIRQ} delay.
>>
>>A typical scenario is when tasks delayed by network,
>>if they delayed by rx net packets, i.e, net_rx_action(),
>>SOFTIRQ delay is almost same as IRQ delay;
>>if they delayed by, e.g, bad driver or broken hardware,
>>SOFTIRQ delay is almost 0 while IRQ delay remains big.
>>
>>Examples tool usage could be found in
>>Documentation/accounting/delay-accounting.rst
>>
>>Signed-off-by: Tio Zhang <tiozhang@...iglobal.com <mailto:tiozhang@...iglobal.com>>


>Reviewed-by: Wang Yaxin <wang.yaxin@....com.cn <mailto:wang.yaxin@....com.cn>>


>Thanks
>Yaxin

Hi Peter,

Gentle ping. Wondering if you have any further comments?

Thanks for your time.

Best,
Tio Zhang