From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: [PATCH net-next v7 1/3] vmcore: add API to collect hardware
 dump in second kernel
Date: Tue, 1 May 2018 16:28:51 -0700
Message-ID: <20180501162851.0fceb210@xeon-e3>
References: <cover.1525197407.git.rahul.lakkireddy@chelsio.com>
        <b6065b53c5446d98ee55e09119f6821f979418d4.1525197408.git.rahul.lakkireddy@chelsio.com>
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Cc: netdev@vger.kernel.org, kexec@lists.infradead.org,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
        davem@davemloft.net, viro@zeniv.linux.org.uk,
        ebiederm@xmission.com, akpm@linux-foundation.org,
        torvalds@linux-foundation.org, ganeshgr@chelsio.com,
        nirranjan@chelsio.com, indranil@chelsio.com
To: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
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On Tue,  1 May 2018 23:57:45 +0530
Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> wrote:

> +
> +int vmcore_add_device_dump(struct vmcoredd_data *data)
> +{
> +	return __vmcore_add_device_dump(data);
> +}
> +EXPORT_SYMBOL(vmcore_add_device_dump);
> +#endif /* CONFIG_PROC_VMCORE_DEVICE_DUMP

Why the stub wrapper function? 
it does nothing.