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From: Kurt Garloff <garloff@suse.de>
To: James Morris <jmorris@redhat.com>
Cc: Linux kernel list <linux-kernel@vger.kernel.org>,
	Chris Wright <chrisw@osdl.org>,
	Stephen Smalley <sds@epoch.ncsc.mil>,
	Greg Kroah-Hartman <gregkh@suse.de>,
	Steve Beattie <smb@wirex.com>,
	linux-security-module@wirex.com
Subject: Re: [PATCH 3/3] Use conditional
Date: Sun, 3 Jul 2005 23:17:32 +0200	[thread overview]
Message-ID: <20050703211732.GG11093@tpkurt.garloff.de> (raw)
In-Reply-To: <Xine.LNX.4.44.0507031250290.30007-100000@thoron.boston.redhat.com>

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Hi James,

[added linux-security-module@wirex.com to Cc]

On Sun, Jul 03, 2005 at 12:51:20PM -0400, James Morris wrote:
> On Sun, 3 Jul 2005, Kurt Garloff wrote:
> 
> > capablities is used. These are not called via indirect calls but 
> > called as hardcoded calls and might thus be inlined; the price for
> > this is a conditional -- benchmarks done by hp showed this to be
> > beneficial (on ia64).
> 
> What about on i386, x86_64 or ppc64?

We tested on i386 as well at the time, and it looked like a tiny
improvement. But doing the statistics, it was in the noise. 
I have no numbers for x86_64 or ppc64.

If you have reason to believe that there could be regressions, we 
should indeed do the benchmarks.

Sidenote: The patches 1 -- 2b alone still make sense, so I would
vote not for delaying their inclusion until we can collect numbers
for all arches we care about to take a decision on patch 3.

Best,
-- 
Kurt Garloff, Director SUSE Labs, Novell Inc.

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  reply	other threads:[~2005-07-03 21:17 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-07-03 15:44 Kurt Garloff
2005-07-03 16:51 ` James Morris
2005-07-03 21:17   ` Kurt Garloff [this message]
2005-07-03 19:00 ` Tony Jones
2005-07-04  6:59   ` Kurt Garloff
2005-07-04  7:44     ` Tony Jones
2005-07-04 12:01       ` serge
2005-07-04 12:08         ` Kurt Garloff
2005-07-04 12:37           ` serge
2005-07-04 13:31             ` Kurt Garloff

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