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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: hch@infradead.org, a.p.zijlstra@chello.nl,
	Al Viro <viro@ZenIV.linux.org.uk>, Ingo Molnar <mingo@elte.hu>,
	"David S. Miller" <davem@davemloft.net>,
	eranian@googlemail.com,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	paulus@samba.org, tglx@linutronix.de
Subject: Re: [GIT PULL] Performance Counters for Linux
Date: Thu, 11 Jun 2009 13:09:58 -0700 (PDT)	[thread overview]
Message-ID: <alpine.LFD.2.01.0906111305470.3535@localhost.localdomain> (raw)
In-Reply-To: <20090611125804.411095e8.akpm@linux-foundation.org>



On Thu, 11 Jun 2009, Andrew Morton wrote:
> 
> It could be that shipping userspace code in the kernel bundle will
> improve that situation.  So let's give it a try.  If it turns out to be
> good, let's do it again.  If it turns out to be bad, let's move perf
> out of the kernel tree and not do it again.

Exactly. Right now, I use the oprofile experience as a reason for why we 
should try to do this. But hey, who knows, in one year, maybe people will 
use _this_ experience as a reason why we should never do it again.

We just don't know yet. But that's no reason not to try. Either way, we'll 
hopefully learn something.

Or to quote Edison:
 "I have not failed 700 times. I have not failed once. I have succeeded in 
  proving that those 700 ways will not work. When I have eliminated the 
  ways that will not work, I will find the way that will work."

			Linus

  reply	other threads:[~2009-06-11 20:10 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-11 16:03 Ingo Molnar
2009-06-11 16:17 ` Christoph Hellwig
2009-06-11 16:26   ` Linus Torvalds
2009-06-11 16:34     ` Marcel Holtmann
2009-06-11 16:38       ` Linus Torvalds
2009-06-11 16:46         ` Christoph Hellwig
2009-06-11 16:54           ` Linus Torvalds
2009-06-11 16:47         ` Marcel Holtmann
2009-06-11 18:04         ` David Newall
2009-06-11 16:52     ` Al Viro
2009-06-11 16:56       ` Peter Zijlstra
2009-06-11 17:00         ` Christoph Hellwig
2009-06-11 17:05           ` Ray Lee
2009-06-11 17:08             ` Marcel Holtmann
2009-06-11 17:12             ` Al Viro
2009-06-11 17:22               ` Ray Lee
2009-06-11 17:06           ` Linus Torvalds
2009-06-11 17:59             ` Pekka Enberg
2009-06-11 18:10               ` David Newall
2009-06-11 18:21                 ` Linus Torvalds
2009-06-11 18:38                   ` David Newall
2009-06-11 18:44                     ` Linus Torvalds
2009-06-11 19:07                       ` David Newall
2009-06-11 19:23                         ` Linus Torvalds
2009-06-11 19:29                           ` Linus Torvalds
2009-06-11 19:35                             ` David Newall
2009-06-11 19:49                               ` Linus Torvalds
2009-06-12  1:43                                 ` Robert Richter
2009-06-12  3:21                                 ` David Newall
2009-06-11 19:37                           ` David Newall
2009-06-11 18:51                   ` Christoph Hellwig
2009-06-11 19:05                   ` Marcel Holtmann
2009-06-11 18:24             ` Martin Bligh
2009-06-11 18:34               ` Linus Torvalds
2009-06-11 20:23                 ` Ingo Molnar
2009-06-11 20:49                   ` Marcel Holtmann
2009-06-11 21:08                     ` Sam Ravnborg
2009-06-11 21:17                       ` Marcel Holtmann
2009-06-11 21:26                         ` Sam Ravnborg
2009-06-11 22:18                           ` Jiri Slaby
2009-06-11 22:27                             ` Linus Torvalds
2009-06-11 22:38                               ` Alan Cox
2009-06-11 22:49                                 ` Linus Torvalds
2009-06-12  7:35                                   ` Alan Cox
2009-06-11 23:19                               ` Al Viro
2009-06-11 23:25                                 ` Linus Torvalds
2009-06-12  0:26                                   ` Al Viro
2009-06-12  2:58                                     ` Linus Torvalds
2009-06-12  4:05                                       ` Al Viro
2009-06-11 21:59                         ` Steven Rostedt
2009-06-12 10:19                           ` Jörn Engel
2009-06-11 21:14                     ` Ingo Molnar
2009-06-28  1:19                   ` Felipe Contreras
2009-06-11 19:58             ` Andrew Morton
2009-06-11 20:09               ` Linus Torvalds [this message]
2009-06-12  4:07             ` Kyle McMartin
2009-06-11 16:58       ` Linus Torvalds
2009-06-11 18:50     ` Sam Ravnborg
2009-06-15 13:41       ` Giacomo A. Catenazzi
2009-06-15 15:18         ` Sam Ravnborg
2009-06-12  9:56 ` stephane eranian
2009-06-12 10:28   ` Ingo Molnar
2009-06-18 21:58     ` stephane eranian
2009-06-22 13:10       ` Performance analysis under Linux (was: Re: [GIT PULL] Performance Counters for Linux) Ingo Molnar

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