From: Ingo Molnar <mingo@elte.hu>
To: Jan Beulich <JBeulich@suse.com>
Cc: tglx@linutronix.de, Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel@vger.kernel.org, hpa@zytor.com
Subject: Re: [PATCH] x86-64: fix memset() to support sizes of 4Gb and above
Date: Fri, 6 Jan 2012 20:01:54 +0100 [thread overview]
Message-ID: <20120106190154.GA4164@elte.hu> (raw)
In-Reply-To: <4F06F7BA020000780006ACEB@nat28.tlf.novell.com>
* Jan Beulich <JBeulich@suse.com> wrote:
> > Would be nice to add support for arch/x86/lib/memset_64.S as
> > well, and look at the before/after performance of it. In
> > userspace we can do a lot more accurate measurements of this
> > kind:
>
> I'll see whether I can get this done, but I admit that I'm
> entirely unfamiliar with this tool and its infrastructure.
> [...]
Just check what it does for memcpy and duplicate it.
> [...] I hope doing this is not going to be a requirement for
> acceptance of the patch.
No, but it would certainly help us make sure there's no
performance side effect.
Thanks,
Ingo
next prev parent reply other threads:[~2012-01-06 19:03 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-05 16:10 [PATCH] x86-64: fix memset() to support sizes of 4Gb and above Jan Beulich
2012-01-06 11:05 ` Ingo Molnar
2012-01-06 12:31 ` Jan Beulich
2012-01-06 19:01 ` Ingo Molnar [this message]
2012-01-18 10:40 ` Jan Beulich
2012-01-18 11:14 ` Ingo Molnar
2012-01-18 13:33 ` Jan Beulich
2012-01-18 18:16 ` Linus Torvalds
2012-01-19 7:48 ` Jan Beulich
2012-01-19 12:18 ` Ingo Molnar
2012-01-26 13:40 ` [tip:x86/asm] x86-64: Fix " tip-bot for Jan Beulich
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