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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: torvalds@transmeta.com (Linus Torvalds)
Cc: andrea@suse.de (Andrea Arcangeli), mingo@elte.hu (Ingo Molnar),
	linux-kernel@vger.kernel.org (Kernel Mailing List)
Subject: Re: softirq bugs in pre2
Date: Mon, 11 Jun 2001 21:55:49 +0100 (BST)	[thread overview]
Message-ID: <E159Yiz-0000MA-00@the-village.bc.nu> (raw)
In-Reply-To: <Pine.LNX.4.31.0106111207350.4452-100000@penguin.transmeta.com> from "Linus Torvalds" at Jun 11, 2001 12:09:03 PM

> The copy-user latency fixes only make sense for out-of-line copies. If
> we're going to have a conditional function call to "schedule()", we do not
> want to inline the dang thing any more - we've just destroyed our register
> set etc anyway.

Is there any reason we still inline so many copy_* and put/get user calls. I
can't benchmark a difference out of line and the code shrinkage is more
than measurable (AMD Athlon 550 and AMD Athlon 1GHz)

  parent reply	other threads:[~2001-06-11 20:58 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-06-11 17:37 softirq bugs in pre2 Andrea Arcangeli
2001-06-11 19:09 ` Linus Torvalds
2001-06-11 19:41   ` Andrea Arcangeli
2001-06-11 20:55   ` Alan Cox [this message]
2001-06-11 22:42   ` Gigabit Intel NIC? - Intel Gigabit Ethernet Pro/1000T Shawn Starr
2001-06-12 16:34     ` Alan Cox
2001-06-12 17:20       ` Riley Williams
2001-06-13 10:25         ` Ion Badulescu
2001-06-13 12:40           ` Ralf Baechle
2001-06-13 17:07             ` James Sutherland
2001-06-14 20:59           ` Riley Williams
2001-06-14 21:10             ` Jeff Garzik
2001-06-14 21:14             ` Matthew Jacob
2001-06-14 21:29             ` Alan Cox
2001-06-14 21:52               ` Matthew Dharm
2001-06-14 21:58                 ` Alan Cox
2001-06-14 22:03                 ` Matthew Jacob
2001-06-15  2:20             ` Shawn Starr
2001-06-12  2:54   ` softirq bugs in pre2 Andrew Morton
2001-06-11 21:58 ` Pavel Machek

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