linux-kernel - Re: [PATCH v5 1/5] sysfs: Add attribute info for /sys/devices/.../coredump

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Message-ID: <YvPbGms7bzFuWTJg@kroah.com>
Date:   Wed, 10 Aug 2022 18:21:46 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Johannes Berg <johannes@...solutions.net>
Cc:     Manish Mandlik <mmandlik@...gle.com>,
        Arend van Spriel <aspriel@...il.com>, marcel@...tmann.org,
        luiz.dentz@...il.com, Dan Williams <dan.j.williams@...el.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        linux-bluetooth@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        chromeos-bluetooth-upstreaming@...omium.org,
        Won Chung <wonchung@...gle.com>,
        Abhishek Pandit-Subedi <abhishekpandit@...omium.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 1/5] sysfs: Add attribute info for
 /sys/devices/.../coredump_disabled

On Wed, Aug 10, 2022 at 06:03:37PM +0200, Johannes Berg wrote:
> On Wed, 2022-08-10 at 09:00 -0700, Manish Mandlik wrote:
> > This patch adds the specification for /sys/devices/.../coredump_disabled
> > attribute which allows the userspace to enable/disable devcoredump for a
> > particular device and drivers can use it to enable/disable functionality
> > accordingly. It is available when the CONFIG_DEV_COREDUMP is enabled and
> > driver has implemented the .coredump() callback.
> > 
> 
> It would be nice to say _why_? What problem does this solve? You could
> just create the dump and discard it, instead, for example?

Agreed, I do not understand the need for this at all.

thanks,

greg k-h