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Date: Thu, 30 Jan 2020 07:45:30 -0800
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH] kbuild: allow symbol whitelisting with TRIM_UNUSED_KSYMS
Message-ID: <20200130154530.GA7452@infradead.org>
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To: Quentin Perret <qperret@google.com>
Cc: masahiroy@kernel.org, nico@fluxnic.net, linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, maennich@google.com, kernel-team@android.com

On Wed, Jan 29, 2020 at 03:06:12PM +0000, Quentin Perret wrote:
> CONFIG_TRIM_UNUSED_KSYMS currently removes all unused exported symbols
> from ksymtab. This works really well when using in-tree drivers, but
> cannot be used in its current form if some of them are out-of-tree.

NAK.  The state policy is that we don't care for out of tree modules,
and this is useful for nothing but.  In fact we should remove the
CONFIG_TRIM_UNUSED_KSYMS=n option soon.