From: David Newall <davidn@davidnewall.com>
To: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Christoph Hellwig <hch@infradead.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Al Viro <viro@zeniv.linux.org.uk>, Ingo Molnar <mingo@elte.hu>,
"David S. Miller" <davem@davemloft.net>,
Stephane Eranian <eranian@googlemail.com>,
linux-kernel@vger.kernel.org, Paul Mackerras <paulus@samba.org>,
Andrew Morton <akpm@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [GIT PULL] Performance Counters for Linux
Date: Fri, 12 Jun 2009 03:40:50 +0930 [thread overview]
Message-ID: <4A3148AA.9000007@davidnewall.com> (raw)
In-Reply-To: <84144f020906111059g6e25a090y4434cfd698f84fb4@mail.gmail.com>
Pekka Enberg wrote:
> And really, what do we gain by moving perf out of tree and making it
> follow its own release cycle (and getting out of sync eventually)?
I'm sure perf will change, for example as faults are discovered in it.
Perhaps, too, the kernel side counters will change, but will the ABI?
Peter Zijlstra comment ("we most certainly intend to maintain its ABI")
implies it won't, or won't in such a way as to break user space tools.
What I'm saying is that this doesn't sound like something that needs
user-space in lock-step with kernel.
next prev parent reply other threads:[~2009-06-11 18:11 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-11 16:03 [GIT PULL] Performance Counters for Linux 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 [this message]
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
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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