linux-kernel - Re: [PATCH] RDMA/hfi: add a judgment on the availability of cpumask

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Date:   Tue, 4 Apr 2023 11:02:47 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     xiaolinkui <xiaolinkui@....com>
Cc:     dennis.dalessandro@...nelisnetworks.com, jgg@...pe.ca,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
        Linkui Xiao <xiaolinkui@...inos.cn>
Subject: Re: [PATCH] RDMA/hfi: add a judgment on the availability of cpumask

On Tue, Apr 04, 2023 at 03:01:58PM +0800, xiaolinkui wrote:
> Thanks for your reply.
> 
> When CONFIG_CPUMASK_OFFSTACK=y, "ret" will be false if diff==NULL.
> 
> However, when CONFIG_CPUMASK_OFFSTACK=n, these two are not necessarily
> equivalent.

And what is the problem with that? cpumask_* API is built to handle
correctly this mode.

Reminder: please don't top post.

> 
> Thanks