linux-kernel - 答复: [????] Re: [PATCH] sched_ext: Simplify cpumask computation in balance

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: <7f05b88f883848a583e36afe97bb0c7c@baidu.com>
Date: Sat, 8 Mar 2025 13:32:07 +0000
From: "Li,Rongqing" <lirongqing@...du.com>
To: Tejun Heo <tj@...nel.org>
CC: "void@...ifault.com" <void@...ifault.com>, "arighi@...dia.com"
	<arighi@...dia.com>, "changwoo@...lia.com" <changwoo@...lia.com>,
	"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>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: 答复: [????] Re: [PATCH] sched_ext: Simplify cpumask computation in balance_scx

> How is cpumask_of() expensive? I have a hard time seeing how this would
> actually improve anything. Do you have any measurements?
> 

for_each_cpu_andnot+cpumask_of is more faster
sorry for this noise

thanks