linux-kernel - Re: [PATCH v2 0/3] s390: replace wq users and add WQ_PERCPU to alloc

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Message-ID: <20250924090330.7748Aaf-hca@linux.ibm.com>
Date: Wed, 24 Sep 2025 11:03:30 +0200
From: Heiko Carstens <hca@...ux.ibm.com>
To: Marco Crivellari <marco.crivellari@...e.com>
Cc: linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
        Tejun Heo <tj@...nel.org>, Lai Jiangshan <jiangshanlai@...il.com>,
        Frederic Weisbecker <frederic@...nel.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Michal Hocko <mhocko@...e.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>
Subject: Re: [PATCH v2 0/3] s390: replace wq users and add WQ_PERCPU to
 alloc_workqueue() users

On Wed, Sep 17, 2025 at 05:38:56PM +0200, Marco Crivellari wrote:
> This patchset is the first stone on a refactoring needed in order to
> address the points aforementioned; it will have a positive impact also
> on the cpu isolation, in the long term, moving away percpu workqueue in
> favor to an unbound model.
...
> ---
> Changes in v2:
> - New in the series, 2/3: arch/s390/kernel/hiperdispatch.c does not benefit from
>   system_wq: this has been converted directly to system_unbound_wq.
> - the others system_wq users are converted to system_percpu_wq in patch 3/3
> 
> 
> Marco Crivellari (3):
>   drivers/s390: WQ_PERCPU added to alloc_workqueue users
>   s390/diag324: replace use of system_wq with system_percpu_wq
>   s390: replace use of system_wq with system_dfl_wq
> 
>  arch/s390/kernel/diag/diag324.c  | 4 ++--
>  arch/s390/kernel/hiperdispatch.c | 2 +-
>  drivers/s390/char/tape_3590.c    | 2 +-
>  3 files changed, 4 insertions(+), 4 deletions(-)

Series applied, thanks!