linux-kernel - Re: [PATCH v5 0/3] PM: hibernate: make compression threads configurable and support dynamic crc arrays

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Message-ID: <CAJZ5v0jmmHORHg7HSyTKfZrSwY22geh54JT3T6JemtXpaXgtiQ@mail.gmail.com>
Date: Thu, 30 Oct 2025 20:09:30 +0100
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Xueqin Luo <luoxueqin@...inos.cn>
Cc: rafael@...nel.org, pavel@...nel.org, lenb@...nel.org, 
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 0/3] PM: hibernate: make compression threads
 configurable and support dynamic crc arrays

On Tue, Oct 21, 2025 at 1:37 PM Xueqin Luo <luoxueqin@...inos.cn> wrote:
>
> Hi,
>
> This is v5 of the series to make hibernate compression/decompression
> threads configurable and improve scalability.
>
> Following feedback from previous versions:
>
> - Patch 2 (`PM: hibernate: make compression threads configurable`) has been updated
>   to rename the GRUB/kernel command line parameter from `cmp_threads` to
>   `hibernate_compression_threads`, making its purpose clearer and more
>   self-explanatory.
>
> - Patch 3 (`PM: hibernate: add sysfs interface for hibernate_compression_threads`)
>   has been added to provide a runtime interface under
>   `/sys/power/hibernate_compression_threads`. This allows users and
>   system integrators to tune the number of compression/decompression
>   threads dynamically without rebooting the system.
>
> - Corresponding documentation updates have been added:
>   - `Documentation/admin-guide/kernel-parameters.txt` now documents
>     `hibernate_compression_threads=` GRUB parameter.
>   - `Documentation/ABI/testing/sysfs-power` describes the new sysfs interface.
>
> This series ensures that both boot-time and runtime configuration of
> hibernate compression threads are supported, improving flexibility
> and scalability on multi-core systems.
>
> Xueqin Luo (3):
>   PM: hibernate: dynamically allocate crc->unc_len/unc for configurable
>     threads
>   PM: hibernate: make compression threads configurable
>   PM: hibernate: add sysfs interface for hibernate_compression_threads

All applied as 6.19 material, thanks!