netdev - Re: [PATCH v3] mwifiex: fix sleep in atomic context bugs caused by dev

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Message-ID: <1e422d90e7e2d5a2c326de9c12aa70f8d3f82b96.camel@sipsolutions.net>
Date:   Mon, 23 May 2022 15:43:34 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Kalle Valo <kvalo@...nel.org>, duoming@....edu.cn
Cc:     Greg KH <gregkh@...uxfoundation.org>,
        linux-wireless@...r.kernel.org, amitkarwar@...il.com,
        ganapathi017@...il.com, sharvari.harisangam@....com,
        huxinming820@...il.com, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, rafael@...nel.org
Subject: Re: [PATCH v3] mwifiex: fix sleep in atomic context bugs caused by
 dev_coredumpv

On Mon, 2022-05-23 at 14:31 +0300, Kalle Valo wrote:
> 
> In a way it would be nice to be able to call dev_coredump from atomic
> contexts, though I don't know how practical it actually is. Is there any
> other option? What about adding a gfp_t parameter to dev_set_name()? Or
> is there an alternative for dev_set_name() which can be called in atomic
> contexts?
> 
> Johannes&Greg, any ideas?

If you need to, I guess you can collect the data into some area and then
provide it to devcoredump later? Not sure it's a good idea though since
collecting data can take a while.

johannes