linux-kernel - Re: [PATCH 2/2] soc: hisilicon: kunpeng_hbmcache: Add support for online and offline the hbm cache

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Message-ID: <79f0dbc0-b0b7-448d-a4fb-9e3eceb89801@oss.qualcomm.com>
Date: Mon, 9 Dec 2024 16:01:24 -0800
From: Jeff Johnson <jeff.johnson@....qualcomm.com>
To: Zhang Zekun <zhangzekun11@...wei.com>, xuwei5@...ilicon.com,
        lihuisong@...wei.com, Jonathan.Cameron@...wei.com
Cc: linux-kernel@...r.kernel.org, liuyongqiang13@...wei.com
Subject: Re: [PATCH 2/2] soc: hisilicon: kunpeng_hbmcache: Add support for
 online and offline the hbm cache

On 12/6/24 03:28, Zhang Zekun wrote:
> Add a driver for High Bandwidth Memory (HBM) cache, which provides user
> space interfaces to power on/off the HBM cache. Use HBM as a cache can
> take advantage of the high bandwidth of HBM in normal memory access, and
> OS does not need to aware of the existence of HBM cache. For workloads
> which does not require a high memory access bandwidth, power off the HBM
> cache device can help save energy.
> 
> Signed-off-by: Zhang Zekun <zhangzekun11@...wei.com>

...

> +module_exit(hbm_cache_module_exit);
> +MODULE_LICENSE("GPL");

Unlike the 1/2 patch, this one CAN be built as a module, so please add the
missing MODULE_DESCRIPTION() macro to avoid the warning with make W=1.

/jeff