On Tue, Feb 23, 2021 at 12:07:39PM -0800, Linus Torvalds wrote: > On Tue, Feb 23, 2021 at 12:03 PM Linus Torvalds > <torva...@linux-foundation.org> wrote: > > > > This is unacceptably slow. If that symbol trimming takes 30% of the > > whole kernel build time, it needs to be fixed or removed. > > I think I'm going to mark TRIM_UNUSED_KSYMS as "depends on BROKEN". > There's no way I can accept that horrible overhead, and the rationale > for that config option is questionable at best,
I think it is pretty useful for embedded setups. BROKEN seems pretty strong for something that absolutely works as intendended. I guess to make you (and possibly others) not grumpy we just need to ensure it doesn't get pulled in by allmodconfig. So maybe just invert the symbol, default the KEEP_UNUSED_SYMBOL, and add a message to the helptext explaining the slowdown?
