linux-kernel - Looping more in detach_tasks() when RT and CFS tasks are present

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

Message-ID: <CAEU1=PkNtyznCms3jjp-oZHW=UAinnNKqG144VuzO5M7MLkO3Q@mail.gmail.com>
Date:   Wed, 24 Jun 2020 17:12:33 +0530
From:   Pavan Kondeti <pkondeti@...eaurora.org>
To:     Vincent Guittot <vincent.guittot@...aro.org>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, leiwen@...vell.com
Subject: Looping more in detach_tasks() when RT and CFS tasks are present

Hi Vincent/Peter,

in load_balance(), we derive env->loop_max based on rq->nr_running.
When the busiest rq has both RT and CFS tasks, we do more loops in
detach_tasks(). Is there any reason for not using
rq->cfs.h_nr_running?

Lei Wen attempted to fix this before.
https://lore.kernel.org/lkml/1376814322-7320-2-git-send-email-leiwen@marvell.com/

Thanks,
Pavan

-- 
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a
Linux Foundation Collaborative Project