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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Jiri Slaby <jirislaby@gmail.com>
Cc: David Laight <David.Laight@aculab.com>,
	 "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	 Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	 Andrew Morton <akpm@linux-foundation.org>,
	"Matthew Wilcox (Oracle)" <willy@infradead.org>,
	 Christoph Hellwig <hch@infradead.org>,
	"Jason A. Donenfeld" <Jason@zx2c4.com>
Subject: Re: [PATCH next v4 0/5] minmax: Relax type checks in min() and max().
Date: Mon, 8 Jan 2024 13:11:12 -0800	[thread overview]
Message-ID: <CAHk-=whkGHOmpM_1kNgzX1UDAs10+UuALcpeEWN29EE0m-my=w@mail.gmail.com> (raw)
In-Reply-To: <CAHk-=wjE1eLMtkKqTt0XqNSnKAeDagV=WQU+vxHL_wsLuO8Gag@mail.gmail.com>

On Mon, 8 Jan 2024 at 12:04, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> So we *could* plan on that, remove the checks from min/max, and use
> something like the attached patch.

Whee.

On my machine, that patch makes an "allmodconfig" build go from

    10:41 elapsed

to

     8:46 elapsed

so that min/max type checking is almost 20% of the build time.

Yeah, I think we need to get rid of it.

Can somebody else confirm similar time differences? Or is it just me?

                 Linus

  reply	other threads:[~2024-01-08 21:11 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-18  8:14 [PATCH next v4 0/5] minmax: Relax type checks in min() and max() David Laight
2023-09-18  8:16 ` [PATCH next v4 1/5] minmax: Add umin(a, b) and umax(a, b) David Laight
2024-01-12 12:49   ` Dan Carpenter
2024-01-12 13:40     ` David Laight
2024-01-12 14:03       ` Dan Carpenter
2024-01-12 14:26         ` David Laight
2024-01-18 10:30           ` Dan Carpenter
2023-09-18  8:17 ` [PATCH next v4 2/5] minmax: Allow min()/max()/clamp() if the arguments have the same signedness David Laight
2023-09-18  8:17 ` [PATCH next v4 3/5] minmax: Fix indentation of __cmp_once() and __clamp_once() David Laight
2023-09-18  8:18 ` [PATCH next v4 4/5] minmax: Allow comparisons of 'int' against 'unsigned char/short' David Laight
2023-09-18  8:19 ` [PATCH next v4 5/5] minmax: Relax check to allow comparison between unsigned arguments and signed constants David Laight
2023-09-27 17:30 ` [PATCH next v4 0/5] minmax: Relax type checks in min() and max() Andrew Morton
2023-09-28  8:10   ` David Laight
2024-01-08 11:46 ` Jiri Slaby
2024-01-08 13:34   ` David Laight
2024-01-08 18:19   ` Linus Torvalds
2024-01-08 20:04     ` Linus Torvalds
2024-01-08 21:11       ` Linus Torvalds [this message]
2024-01-09  0:39         ` [PATCH next v4 0/5] minmax: Relax type checks in min() and max().^[[C John Stoffel
2024-01-09  6:54         ` [PATCH next v4 0/5] minmax: Relax type checks in min() and max() Jiri Slaby
2024-01-10  6:17         ` Stephen Rothwell
2024-01-10  9:03           ` David Laight
2024-01-10 19:35           ` Linus Torvalds
2024-01-10 22:58             ` David Laight
2024-01-20 21:33               ` Linus Torvalds
2024-01-21 22:18                 ` David Laight
2024-01-09  9:35     ` David Laight
2024-01-09  9:41     ` David Laight
2024-01-09 12:09     ` Kalle Valo
2024-01-19  7:14     ` Jiri Slaby
2024-01-19  8:23       ` Hans Verkuil
2024-01-19  9:14       ` David Laight
2024-01-12  9:13 ` Dan Carpenter
2024-01-12 12:16   ` David Laight
2024-01-12 12:40     ` Dan Carpenter

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