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Date: Sun, 15 May 2022 01:26:23 +0900 From: Masahiro Yamada <masahiroy@...nel.org> To: Peter Zijlstra <peterz@...radead.org> Cc: Vincent Mailhol <mailhol.vincent@...adoo.fr>, Michal Marek <michal.lkml@...kovi.net>, Nick Desaulniers <ndesaulniers@...gle.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Arnd Bergmann <arnd@...db.de>, Andy Shevchenko <andy.shevchenko@...il.com>, Rikard Falkeborn <rikard.falkeborn@...il.com>, Andrew Morton <akpm@...ux-foundation.org>, Kees Cook <keescook@...omium.org>, Will Deacon <will@...nel.org> Subject: Re: [RFC PATCH v2 2/2] kbuild: call check-atomics.sh only if prerequisites change On Sat, May 14, 2022 at 11:56 PM Peter Zijlstra <peterz@...radead.org> wrote: > > On Sat, May 14, 2022 at 03:14:48PM +0200, Peter Zijlstra wrote: > > On Sat, May 14, 2022 at 04:01:18AM +0900, Masahiro Yamada wrote: > > > I wrote a different patch. > > > https://lore.kernel.org/lkml/20220513185340.239753-1-masahiroy@kernel.org/T/#u > > > > I'm not seeing that in my inbox :-( > > > > AFAICT this way 'make tags' will not find and index the files, which is > > a total no-go. > > > > NAK > > Additionally, if you spuriously regenerate these files, you'll risk > rebuilding huge parts of the kernel through the dependencies. This is just one-time copying. Rebuild only happens just once. BTW, gen-atomics.sh takes more than 1 sec. Do you think gen-atomics.sh can be much faster if it is rewritten by Python or Perl? Then, we can drop 5000 lines from the git repository. -- Best Regards Masahiro Yamada
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