Re: [PATCH] kbuild: Disable extra debugging info in .s output

Borislav Petkov
2019-02-01T09:42:23Z

On Fri, Feb 01, 2019 at 12:06:13PM +0900, Masahiro Yamada wrote:
> This would make the build speed slower
> because the compiler is invoked to check those flags in every directory.
>
> I tested this patch with x86_64_defconfig and GCC 8.2
> (on ubuntu 18.10 in docker)
> but I saw no effect of this patch.

Yes, because that's the .s target which is meant to be used to convert
only a *single* .c file to assembly in order to stare at the resulting
asm. For example:

make arch/x86/kernel/cpu/common.s

It is a debugging aid - and a very basic and important one - and is not
usually used during a normal kernel build. AFAIK.

So we shouldn't worry about any slowdowns here.

Thx.