linux-kernel - Re: [PATCH 02/11] sched_ext: Refactor consume_remote

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

Message-ID: <ZtKrISQNxZIS9JVO@slm.duckdns.org>
Date: Fri, 30 Aug 2024 19:33:21 -1000
From: Tejun Heo <tj@...nel.org>
To: David Vernet <void@...ifault.com>
Cc: kernel-team@...a.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/11] sched_ext: Refactor consume_remote_task()

Hello,

On Fri, Aug 30, 2024 at 11:05:16PM -0500, David Vernet wrote:
...
> Not a functional change from the prior patch, but it occurred to me that
> if we just deactivate like this then we'll also fire the ops.quiescent()
> callback in dequeue_task_scx(). Should we add a check to skip the
> dequeue callbacks if p->scx.holding_cpu >= 0?

Right, migrations shouldn't trigger quiescent / runnable events. We should
be able to suppress based on holding_cpu and sticky_cpu. Will look into
that.

Thanks.

-- 
tejun