Messages in this thread | | | From | Masahiro Yamada <> | Date | Wed, 2 Dec 2020 21:53:20 +0900 | Subject | Re: [GIT PULL 2/2] Kconfig updates for v5.10-rc1 |
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Hi Linus,
On Sun, Nov 29, 2020 at 3:28 AM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > On Fri, Nov 27, 2020 at 11:05 PM Masahiro Yamada <masahiroy@kernel.org> wrote: > > > > As for the cc1plus cost, I got a similar result. > > > > Running scripts/gcc-plugin.sh directly > > took me 0.5 sec, which is a fourth > > of the allmodconfig run-time. > > > > Actually, I did not know this shell script > > was so expensive to run... > > So it turns out that one reason it's so expensive to run is that it > does a *lot* more than it claims to do. > > It says "we need a c++ compiler that supports the designated > initializer GNU extension", but then it actually includes a header > file from hell, rather than just test designated initializers. > > This patch makes the cc1plus overhead go down a lot. That said, I'm > doubtful we really want gcc plugins at all, considering that the only > real users have all apparently migrated to clang builtin functionality > instead. > > Linus
The attached patch looks OK to me.
Just a nit: Now that the test code does not include any header, you can also delete "-I $srctree/gcc-plugins -I $gccplugins_dir/include"
If you apply it directly, please feel free to add
Reviewed-by: Masahiro Yamada <masahiroy@kernel.org>
-- Best Regards Masahiro Yamada
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