From: Linus Torvalds <torvalds@linuxfoundation.org>
To: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: David Laight <David.Laight@aculab.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
Christoph Hellwig <hch@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Dan Carpenter <dan.carpenter@linaro.org>,
Arnd Bergmann <arnd@kernel.org>,
"Jason@zx2c4.com" <Jason@zx2c4.com>,
"pedro.falcato@gmail.com" <pedro.falcato@gmail.com>,
Mateusz Guzik <mjguzik@gmail.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: [PATCH 0/7] minmax: reduce compilation time
Date: Sat, 27 Jul 2024 09:26:43 -0700 [thread overview]
Message-ID: <CAHk-=wj9GLHpMo=ikVYzXtnNBpFwG3YeCZHfWndj5_xm=19szg@mail.gmail.com> (raw)
In-Reply-To: <2f1be7ee-2d70-4dd3-bfa2-1b94a4fc5a66@lucifer.local>
On Sat, 27 Jul 2024 at 01:08, Lorenzo Stoakes
<lorenzo.stoakes@oracle.com> wrote:
>
> 62603617./drivers/staging/media/atomisp/pci/isp/kernels/ynr/ynr_1.0/ia_css_ynr.host.o.pre
Heh.
Longest line is drivers/.../ia_css_ynr.host.c:71 (27785kB)
yeah, that's a single line that expands to 27MB in size.
And yes, that line is one single min(...) expression with arguments
that are then in turn macros with other nested min/max arguments.
See also drivers/staging/media/atomisp/pci/sh_css_frac.h.
On my fairly beefy (admittedly more cores than single-thread) machine,
just generating the preprocessor file takes just under 20s.
Building the object file is actually faster at "only" 8.5s for that
one file, because it uses the built-in preprocessor and never writes
it out, and most of the actual preprocessing result is trivial stuff
that gets thrown away immediately.
Linus
next prev parent reply other threads:[~2024-07-27 16:27 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-24 14:26 David Laight
2024-07-24 14:28 ` [PATCH 1/7] minmax: Put all the clamp() definitions together David Laight
2024-07-24 14:29 ` [PATCH 2/7] minmax: Use _Static_assert() instead of static_assert() David Laight
2024-07-24 14:29 ` [PATCH 3/7] compiler.h: Add __if_constexpr(expr, if_const, if_not_const) David Laight
2024-07-24 17:32 ` Arnd Bergmann
2024-07-25 9:12 ` David Laight
2024-07-24 19:48 ` Linus Torvalds
2024-07-25 8:45 ` David Laight
2024-07-24 14:30 ` [PATCH 4/7] minmax: Simplify signedness check David Laight
2024-07-24 16:48 ` Arnd Bergmann
2024-07-24 20:02 ` Linus Torvalds
2024-07-25 9:00 ` David Laight
2024-07-25 17:02 ` Linus Torvalds
2024-07-26 9:43 ` Lorenzo Stoakes
2024-07-26 12:57 ` David Laight
2024-07-26 13:27 ` Lorenzo Stoakes
2024-07-25 13:24 ` kernel test robot
2024-07-25 16:39 ` David Laight
2024-07-24 14:31 ` [PATCH 5/7] minmax: Factor out the zero-extension logic from umin/umax David Laight
2024-07-24 14:32 ` [PATCH 6/7] minmax: Optimise _Static_assert() check in clamp() David Laight
2024-07-24 14:33 ` [PATCH 7/7] minmax: minmax: Add __types_ok3() and optimise defines with 3 arguments David Laight
2024-07-24 17:03 ` Arnd Bergmann
2024-07-25 9:07 ` David Laight
2024-07-24 19:34 ` [PATCH 0/7] minmax: reduce compilation time Lorenzo Stoakes
2024-07-24 19:52 ` Linus Torvalds
2024-07-26 18:12 ` Lorenzo Stoakes
2024-07-26 18:24 ` Linus Torvalds
2024-07-26 18:56 ` Lorenzo Stoakes
2024-07-26 19:21 ` Lorenzo Stoakes
2024-07-26 21:36 ` Linus Torvalds
2024-07-26 21:46 ` Jens Axboe
2024-07-26 22:48 ` Linus Torvalds
2024-07-27 15:30 ` Jens Axboe
2024-07-27 15:38 ` Jens Axboe
2024-07-27 16:31 ` Lorenzo Stoakes
2024-07-27 16:36 ` Jens Axboe
2024-07-27 16:41 ` Lorenzo Stoakes
2024-07-27 16:52 ` Jens Axboe
2024-07-27 16:56 ` Lorenzo Stoakes
2024-07-28 11:32 ` David Laight
2024-07-27 4:13 ` Linus Torvalds
2024-07-27 4:14 ` Linus Torvalds
2024-07-27 8:08 ` David Laight
2024-07-27 18:58 ` Lorenzo Stoakes
2024-07-27 19:21 ` Linus Torvalds
2024-07-28 11:17 ` David Laight
2024-07-28 13:07 ` Lorenzo Stoakes
2024-07-27 17:33 ` Matthew Wilcox
2024-07-27 18:16 ` Linus Torvalds
2024-07-27 8:07 ` Lorenzo Stoakes
2024-07-27 16:26 ` Linus Torvalds [this message]
2024-07-27 18:44 ` Lorenzo Stoakes
2024-07-30 4:10 ` Linus Torvalds
2024-07-30 10:36 ` Arnd Bergmann
2024-07-28 17:57 ` Geert Uytterhoeven
2024-07-28 18:43 ` Lorenzo Stoakes
2024-07-26 21:32 ` David Laight
2024-07-26 21:38 ` Linus Torvalds
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAHk-=wj9GLHpMo=ikVYzXtnNBpFwG3YeCZHfWndj5_xm=19szg@mail.gmail.com' \
--to=torvalds@linuxfoundation.org \
--cc=David.Laight@aculab.com \
--cc=Jason@zx2c4.com \
--cc=akpm@linux-foundation.org \
--cc=andriy.shevchenko@linux.intel.com \
--cc=arnd@kernel.org \
--cc=dan.carpenter@linaro.org \
--cc=hch@infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=lorenzo.stoakes@oracle.com \
--cc=mjguzik@gmail.com \
--cc=pedro.falcato@gmail.com \
--cc=willy@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox