From: Borislav Petkov <bp@alien8.de>
To: Ingo Molnar <mingo@kernel.org>
Cc: x86-ml <x86@kernel.org>, Andy Lutomirski <luto@kernel.org>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [RFC] Improve memset
Date: Fri, 13 Sep 2019 09:50:08 +0200 [thread overview]
Message-ID: <20190913075008.GA20638@zn.tnic> (raw)
In-Reply-To: <20190913073530.GA125477@gmail.com>
On Fri, Sep 13, 2019 at 09:35:30AM +0200, Ingo Molnar wrote:
> That looks exciting - I'm wondering what effects this has on code
> footprint - for example defconfig vmlinux code size, and what the average
> per call site footprint impact is?
>
> If the footprint effect is acceptable, then I'd expect this to improve
> performance, especially in hot loops.
Well, it grows a bit but that's my conglomerate ugly patch so I'll redo
that test when I've cleaned it up:
text data bss dec hex filename
19699924 5201260 1642568 26543752 1950688 vmlinux.before
19791674 5201388 1552456 26545518 1950d6e vmlinux.after
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2019-09-13 7:50 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-13 7:22 [RFC] Improve memset Borislav Petkov
2019-09-13 7:35 ` Ingo Molnar
2019-09-13 7:50 ` Borislav Petkov [this message]
2019-09-13 8:51 ` Rasmus Villemoes
2019-09-13 9:00 ` Linus Torvalds
2019-09-13 9:18 ` Rasmus Villemoes
2019-09-13 10:42 ` Borislav Petkov
2019-09-13 16:36 ` Borislav Petkov
2019-09-16 9:18 ` Rasmus Villemoes
2019-09-16 17:25 ` Linus Torvalds
2019-09-16 17:40 ` Andy Lutomirski
2019-09-16 21:29 ` Linus Torvalds
2019-09-16 23:13 ` Andy Lutomirski
2019-09-16 23:26 ` Linus Torvalds
2019-09-17 8:15 ` Borislav Petkov
2019-09-17 10:55 ` David Laight
2019-09-17 20:10 ` Josh Poimboeuf
2019-09-17 20:45 ` Linus Torvalds
2019-09-19 12:55 ` Borislav Petkov
2019-09-19 12:49 ` Borislav Petkov
-- strict thread matches above, loose matches on Subject: below --
2019-09-14 9:29 Alexey Dobriyan
2019-09-14 11:39 ` Borislav Petkov
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