linux-kernel - Re: [PATCH 6.8 000/715] 6.8.2-rc1 review

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Message-ID: <0cdbf4d6-3dce-42ee-8029-c486ec999fb5@nvidia.com>
Date: Wed, 3 Apr 2024 11:02:30 +0100
From: Jon Hunter <jonathanh@...dia.com>
To: Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org,
 stable@...r.kernel.org
Cc: torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
 linux@...ck-us.net, shuah@...nel.org, patches@...nelci.org,
 lkft-triage@...ts.linaro.org, florian.fainelli@...adcom.com, pavel@...x.de,
 "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH 6.8 000/715] 6.8.2-rc1 review

Hi Sasha,

On 24/03/2024 22:22, Sasha Levin wrote:
> 
> This is the start of the stable review cycle for the 6.8.2 release.
> There are 715 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Tue Mar 26 10:34:31 PM UTC 2024.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
>          https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/patch/?id=linux-6.8.y&id2=v6.8.1
> or in the git tree and branch at:
>          git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.8.y
> and the diffstat can be found below.
> 
> Thanks,
> Sasha

..

> Tejun Heo (9):
>    workqueue: Move pwq->max_active to wq->max_active
>    workqueue: Factor out pwq_is_empty()
>    workqueue: Replace pwq_activate_inactive_work() with
>      [__]pwq_activate_work()
>    workqueue: Move nr_active handling into helpers
>    workqueue: Make wq_adjust_max_active() round-robin pwqs while
>      activating
>    workqueue: RCU protect wq->dfl_pwq and implement accessors for it
>    workqueue: Introduce struct wq_node_nr_active
>    workqueue: Implement system-wide nr_active enforcement for unbound
>      workqueues
>    workqueue: Don't call cpumask_test_cpu() with -1 CPU in
>      wq_update_node_max_active()


Sorry I am late on this, but I was not copied and so did not see this. I 
noticed a suspend regression on Tegra186 with v6.8.y and bisect is point 
to commit "workqueue: Implement system-wide nr_active enforcement for 
unbound workqueues".

Reverting commits "workqueue: Don't call cpumask_test_cpu() with -1 CPU 
in wq_update_node_max_active()" and "workqueue: Implement system-wide 
nr_active enforcement for unbound workqueues" does fix the problem.

Note that I am not seeing this regression on the mainline with v6.9-rc2 
and so I am not sure if there is something else missing? I am also still 
seeing the problem with v6.8.3-rc1.

Jon

-- 
nvpublic