linux-kernel - Re: [PATCH v7 2/5] seq_buf: Export seq_buf

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Message-ID: <ff1fcc5b32a9ad209660c7cfe7e212c1a16ba10d.camel@perches.com>
Date:   Fri, 08 May 2020 07:52:30 -0700
From:   Joe Perches <joe@...ches.com>
To:     Vaibhav Jain <vaibhav@...ux.ibm.com>,
        Borislav Petkov <bp@...en8.de>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-nvdimm@...ts.01.org,
        linux-kernel@...r.kernel.org,
        "Aneesh Kumar K . V" <aneesh.kumar@...ux.ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Steven Rostedt <rostedt@...dmis.org>,
        Piotr Maziarz <piotrx.maziarz@...ux.intel.com>,
        Cezary Rojewski <cezary.rojewski@...el.com>
Subject: Re: [PATCH v7 2/5] seq_buf: Export seq_buf_printf() to external
 modules

On Fri, 2020-05-08 at 17:30 +0530, Vaibhav Jain wrote:
> Hi Boris,
> 
> Borislav Petkov <bp@...en8.de> writes:
> 
> > On Fri, May 08, 2020 at 04:19:19PM +0530, Vaibhav Jain wrote:
> > > 'seq_buf' provides a very useful abstraction for writing to a string
> > > buffer without needing to worry about it over-flowing. However even
> > > though the API has been stable for couple of years now its stills not
> > > exported to external modules limiting its usage.
> > > 
> > > Hence this patch proposes update to 'seq_buf.c' to mark
> > > seq_buf_printf() which is part of the seq_buf API to be exported to
> > > external GPL modules. This symbol will be used in later parts of this
> > 
> > What is "external GPL modules"?
> I am referring to Kernel Loadable Modules with MODULE_LICENSE("GPL")
> here.

Any reason why these Kernel Loadable Modules with MODULE_LICENSE("GPL")
are not in the kernel tree?