linux-kernel - Re: [PATCH v1] PM: sleep: Restore asynchronous device resume optimization

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: <CAJZ5v0gB2h1G_0a_BAbBtib=VxnJgF9N3Sa3QYpCeURcCtKUTQ@mail.gmail.com>
Date: Wed, 7 Feb 2024 20:54:07 +0100
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Tejun Heo <tj@...nel.org>
Cc: Marek Szyprowski <m.szyprowski@...sung.com>, "Rafael J. Wysocki" <rafael@...nel.org>, 
	"Rafael J. Wysocki" <rjw@...ysocki.net>, Linux PM <linux-pm@...r.kernel.org>, 
	Ulf Hansson <ulf.hansson@...aro.org>, Nathan Chancellor <nathan@...nel.org>, 
	LKML <linux-kernel@...r.kernel.org>, 
	Stanislaw Gruszka <stanislaw.gruszka@...ux.intel.com>, Lai Jiangshan <jiangshanlai@...il.com>, 
	Naohiro.Aota@....com, kernel-team@...a.com
Subject: Re: [PATCH v1] PM: sleep: Restore asynchronous device resume optimization

On Wed, Feb 7, 2024 at 8:48 PM Tejun Heo <tj@...nel.org> wrote:
>
> Hello,
>
> I couldn't reproduce effective max_active being pushed down to min_active
> across suspend/resume cycles on x86. There gotta be something different.
>
> - Can you please apply the following patch along with the WQ_DFL_MIN_ACTIVE
>   bump, go through suspend/resume once and report the dmesg?
>
> - Regardless of the root cause, I think async should switch to a dedicated
>   workqueue with explicitly raised min_active (will add an interface for
>   it).

Agreed.