# Re: \[PATCH v9 1/8\] kbuild: bring back tristate.conf

- From: Luis Chamberlain \<mcgrof@kernel.org\>
- Date: 2022-11-10 03:56:14 
- List: linux-modules
- Page: https://ratatoskr.run/linux-modules/2022/11/2000254
- Thread: https://ratatoskr.run/linux-modules/2022/11/1999379/t.md

```text
On Wed, Nov 09, 2022 at 01:41:25PM +0000, Nick Alcock wrote:
> tristate.conf was dropped because it is not needed to build a
> modules.builtin (although dropping it introduces a few false positives
> into modules.builtin support), and doing so avoids one round of
> recursion through the build tree to build it.  But kallmodsyms support
> requires building a mapping from object file name to built-in module
> name for all builtin modules: this seems to me impossible to accomplish
> without parsing all makefiles under the influence of tristate.conf,
> since the makefiles are the only place this mapping is recorded.
> 
> So bring it back for this purpose.  (Thanks to the refactoring in
> the 5.16 timeframe, this is basically a reimplementation of commit
> 8b41fc4454e36fbfdbb23f940d023d4dece2de29 rather than a simple
> reversion.)
> 
> Signed-off-by: Nick Alcock <redacted>
> Reviewed-by: Victor Erminpour <redacted>
> Reviewed-by: Kris Van Hees <redacted>

I don't see the need, see the review of next patch.

  Luis

```