From: David Laight <David.Laight@ACULAB.COM>
To: 'Linus Torvalds' <torvalds@linuxfoundation.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Jens Axboe <axboe@kernel.dk>,
"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>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Subject: RE: [PATCH v2 1/8] minmax: Put all the clamp() definitions together
Date: Sun, 28 Jul 2024 20:22:48 +0000 [thread overview]
Message-ID: <d949045abc78462ab443b38340ce5c20@AcuMS.aculab.com> (raw)
In-Reply-To: <CAHk-=wj900Q3FtEWJFGADQ0EbmYwBHW8cWzB0p0nvFck=0+y6A@mail.gmail.com>
..
> But I'm inclined to just do that too. Bite the bullet, get rid of the
> whole "has to be a C constant expression" pain.
At least you can 'just do it' :-)
IIRC some of the MIN() need to be min() and others are used for
constants so would need an initial #ifndef MIN test to maintain
bisection without having a single patch that changes all the
files at once.
MIN() (and probably your MIN_T()) ought to have a check for
being a constant in order to stop misuse.
Perhaps just:
#define MIN(x,y) \
(__builtin_choose_expr((x)+(y), 0, 0) + ((x) < (y} ? (x) : (y)))
David
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next prev parent reply other threads:[~2024-07-28 20:23 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-28 14:15 [PATCH v2 0/8] minmax: reduce compilation time David Laight
2024-07-28 14:17 ` [PATCH v2 1/8] minmax: Put all the clamp() definitions together David Laight
2024-07-28 17:24 ` Linus Torvalds
2024-07-28 18:11 ` David Laight
2024-07-28 19:55 ` Linus Torvalds
2024-07-28 20:09 ` David Laight
2024-07-28 20:13 ` Linus Torvalds
2024-07-28 20:22 ` David Laight [this message]
2024-07-28 20:31 ` Linus Torvalds
2024-07-28 22:13 ` David Laight
2024-07-28 22:22 ` Linus Torvalds
2024-07-29 8:01 ` David Laight
2024-07-28 21:01 ` Linus Torvalds
2024-07-28 21:53 ` David Laight
2024-07-29 4:15 ` Linus Torvalds
2024-07-29 22:25 ` Arnd Bergmann
2024-07-29 23:21 ` Linus Torvalds
2024-07-30 1:52 ` Linus Torvalds
2024-07-30 3:59 ` Linus Torvalds
2024-07-30 10:10 ` Arnd Bergmann
2024-07-30 14:14 ` Arnd Bergmann
2024-07-30 18:02 ` Linus Torvalds
2024-07-30 19:52 ` Linus Torvalds
2024-07-30 21:47 ` David Laight
2024-07-30 22:44 ` Linus Torvalds
2024-07-30 23:03 ` Linus Torvalds
2024-07-31 8:09 ` David Laight
2024-07-31 10:50 ` Arnd Bergmann
2024-07-31 15:38 ` Linus Torvalds
2024-07-31 15:56 ` David Laight
2024-07-31 16:04 ` Linus Torvalds
2024-12-04 13:15 ` Geert Uytterhoeven
2024-12-04 17:16 ` David Laight
2024-07-30 16:35 ` Linus Torvalds
2024-07-30 16:46 ` Linus Torvalds
2024-07-30 12:03 ` David Laight
2024-07-28 18:23 ` David Laight
2024-07-28 14:18 ` [PATCH v2 2/8] minmax: Use _Static_assert() instead of static_assert() David Laight
2024-07-28 17:51 ` Christophe JAILLET
2024-07-28 18:12 ` David Laight
2024-07-28 14:19 ` [PATCH v2 3/8] compiler.h: Add __if_constexpr(expr, if_const, if_not_const) David Laight
2024-07-28 14:20 ` [PATCH v2 4/8] minmax: Simplify signedness check David Laight
2024-07-28 16:57 ` Linus Torvalds
2024-07-28 18:14 ` David Laight
2024-07-28 20:13 ` David Laight
2024-07-28 14:21 ` [PATCH v2 5/8] minmax: Factor out the zero-extension logic from umin/umax David Laight
2024-07-28 14:22 ` [PATCH v2 6/8] minmax: Optimise _Static_assert() check in clamp() David Laight
2024-07-28 14:23 ` [PATCH v2 7/8] minmax: Use __auto_type David Laight
2024-07-28 16:59 ` Linus Torvalds
2024-07-28 14:24 ` [PATCH v2 8/8] minmax: minmax: Add __types_ok3() and optimise defines with 3 arguments David Laight
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