linux-kernel - Re: [PATCH] kbuild: allow symbol whitelisting with TRIM_UNUSED

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Date:   Thu, 30 Jan 2020 07:45:30 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Quentin Perret <qperret@...gle.com>
Cc:     masahiroy@...nel.org, nico@...xnic.net,
        linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org,
        maennich@...gle.com, kernel-team@...roid.com
Subject: Re: [PATCH] kbuild: allow symbol whitelisting with TRIM_UNUSED_KSYMS

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.