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Re: Unified tracing buffer

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From: Andi Kleen
Subject: Re: Unified tracing buffer
Date: Monday, September 22, 2008 - 10:04 pm

> I don't think we can remove relayfs before adding this and switching over

It's only two in tree users (+ systemtap) so shouldn't be a big hazzle.
And they're all tracers so presumably they all pass time stamps. But please
don't add a multitude of new methods to do this.

BTW I've been using something like that since early 2000. It was called
ktrace and was based on a old SGI patch.

-Andi

-- 
ak@linux.intel.com
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Messages in current thread:
Unified tracing buffer, Martin Bligh, (Fri Sep 19, 2:33 pm)
Re: Unified tracing buffer, Randy Dunlap, (Fri Sep 19, 2:42 pm)
Re: Unified tracing buffer, Martin Bligh, (Fri Sep 19, 2:57 pm)
Re: Unified tracing buffer, Martin Bligh, (Fri Sep 19, 3:09 pm)
Re: Unified tracing buffer, Martin Bligh, (Fri Sep 19, 3:19 pm)
Re: Unified tracing buffer, Olaf Dabrunz, (Fri Sep 19, 3:28 pm)
Re: Unified tracing buffer, Olaf Dabrunz, (Fri Sep 19, 3:41 pm)
Re: Unified tracing buffer, Frank Ch. Eigler, (Fri Sep 19, 4:18 pm)
Re: Unified tracing buffer, Peter Zijlstra, (Fri Sep 19, 5:07 pm)
Re: Unified tracing buffer, Marcel Holtmann, (Fri Sep 19, 5:26 pm)
Re: Unified tracing buffer, Olaf Dabrunz, (Sat Sep 20, 1:10 am)
Re: Unified tracing buffer, Steven Rostedt, (Sat Sep 20, 1:26 am)
Re: Unified tracing buffer, Steven Rostedt, (Sat Sep 20, 1:29 am)
Re: Unified tracing buffer, Steven Rostedt, (Sat Sep 20, 1:50 am)
Re: Unified tracing buffer, Steven Rostedt, (Sat Sep 20, 2:03 am)
Re: Unified tracing buffer, Mathieu Desnoyers, (Sat Sep 20, 4:40 am)
Re: Unified tracing buffer, Mathieu Desnoyers, (Sat Sep 20, 4:44 am)
Re: Unified tracing buffer, Mathieu Desnoyers, (Sat Sep 20, 6:37 am)
Re: Unified tracing buffer, Steven Rostedt, (Sat Sep 20, 6:51 am)
Re: Unified tracing buffer, Mathieu Desnoyers, (Sat Sep 20, 6:55 am)
Re: Unified tracing buffer, Arjan van de Ven, (Sat Sep 20, 7:12 am)
Re: Unified tracing buffer, Steven Rostedt, (Sat Sep 20, 7:54 am)
Re: Unified tracing buffer, KOSAKI Motohiro, (Sun Sep 21, 8:09 pm)
Re: Unified tracing buffer, Peter Zijlstra, (Mon Sep 22, 2:57 am)
Re: Unified tracing buffer, K.Prasad, (Mon Sep 22, 6:57 am)
Re: Unified tracing buffer, K.Prasad, (Mon Sep 22, 7:07 am)
Re: Unified tracing buffer, Peter Zijlstra, (Mon Sep 22, 7:45 am)
Re: Unified tracing buffer, Martin Bligh, (Mon Sep 22, 9:29 am)
Re: Unified tracing buffer, Peter Zijlstra, (Mon Sep 22, 9:36 am)
Re: Unified tracing buffer, Mathieu Desnoyers, (Mon Sep 22, 11:45 am)
Re: Unified tracing buffer, Mathieu Desnoyers, (Mon Sep 22, 11:52 am)
Re: Unified tracing buffer, Masami Hiramatsu, (Mon Sep 22, 12:45 pm)
Re: Unified tracing buffer, Martin Bligh, (Mon Sep 22, 1:13 pm)
Re: Unified tracing buffer, Masami Hiramatsu, (Mon Sep 22, 1:50 pm)
Re: Unified tracing buffer, Steven Rostedt, (Mon Sep 22, 2:39 pm)
Re: Unified tracing buffer, Masami Hiramatsu, (Mon Sep 22, 3:25 pm)
Re: Unified tracing buffer, Darren Hart, (Mon Sep 22, 4:11 pm)
Re: Unified tracing buffer, Martin Bligh, (Mon Sep 22, 4:16 pm)
Re: Unified tracing buffer, Masami Hiramatsu, (Mon Sep 22, 5:04 pm)
Re: Unified tracing buffer, Masami Hiramatsu, (Mon Sep 22, 5:05 pm)
Re: Unified tracing buffer, Martin Bligh, (Mon Sep 22, 5:12 pm)
Re: Unified tracing buffer, Linus Torvalds, (Mon Sep 22, 5:39 pm)
Re: Unified tracing buffer, Roland Dreier, (Mon Sep 22, 6:26 pm)
Re: Unified tracing buffer, Steven Rostedt, (Mon Sep 22, 6:39 pm)
Re: Unified tracing buffer, Mathieu Desnoyers, (Mon Sep 22, 7:02 pm)
Re: Unified tracing buffer, Darren Hart, (Mon Sep 22, 7:26 pm)
Re: Unified tracing buffer, Mathieu Desnoyers, (Mon Sep 22, 7:30 pm)
Re: Unified tracing buffer, Mathieu Desnoyers, (Mon Sep 22, 7:31 pm)
Re: Unified tracing buffer, Mathieu Desnoyers, (Mon Sep 22, 7:36 pm)
Re: Unified tracing buffer, Mathieu Desnoyers, (Mon Sep 22, 7:49 pm)
Re: Unified tracing buffer, Mathieu Desnoyers, (Mon Sep 22, 8:05 pm)
Re: Unified tracing buffer, Masami Hiramatsu, (Mon Sep 22, 8:06 pm)
Re: Unified tracing buffer, Linus Torvalds, (Mon Sep 22, 8:26 pm)
Re: Unified tracing buffer, Mathieu Desnoyers, (Mon Sep 22, 8:27 pm)
Re: Unified tracing buffer, Andi Kleen, (Mon Sep 22, 8:33 pm)
Re: Unified tracing buffer, Mathieu Desnoyers, (Mon Sep 22, 8:36 pm)
Re: Unified tracing buffer, Steven Rostedt, (Mon Sep 22, 8:43 pm)
Re: Unified tracing buffer, Martin Bligh, (Mon Sep 22, 8:47 pm)
Re: Unified tracing buffer, Linus Torvalds, (Mon Sep 22, 9:05 pm)
Re: Unified tracing buffer, Masami Hiramatsu, (Mon Sep 22, 9:10 pm)
Re: Unified tracing buffer, Martin Bligh, (Mon Sep 22, 9:17 pm)
Re: Unified tracing buffer, Linus Torvalds, (Mon Sep 22, 9:19 pm)
Re: Unified tracing buffer, Andi Kleen, (Mon Sep 22, 10:04 pm)
Re: Unified tracing buffer, Tom Zanussi, (Mon Sep 22, 10:25 pm)
[PATCH 1/3] relay - clean up subbuf switch, Tom Zanussi, (Mon Sep 22, 10:27 pm)
[PATCH 2/3] relay - make subbuf switch replaceable, Tom Zanussi, (Mon Sep 22, 10:27 pm)
[PATCH 3/3] relay - add channel flags, Tom Zanussi, (Mon Sep 22, 10:27 pm)
Re: Unified tracing buffer, Peter Zijlstra, (Tue Sep 23, 2:31 am)
Re: Unified tracing buffer, Steven Rostedt, (Tue Sep 23, 3:53 am)
Re: Unified tracing buffer, Mathieu Desnoyers, (Tue Sep 23, 6:50 am)
Re: Unified tracing buffer, Martin Bligh, (Tue Sep 23, 7:00 am)
Re: Unified tracing buffer, Mathieu Desnoyers, (Tue Sep 23, 7:12 am)
Re: Unified tracing buffer, KOSAKI Motohiro, (Tue Sep 23, 7:36 am)
Re: Unified tracing buffer, Masami Hiramatsu, (Tue Sep 23, 7:49 am)
Re: Unified tracing buffer, Frank Ch. Eigler, (Tue Sep 23, 8:02 am)
Re: Unified tracing buffer, Mathieu Desnoyers, (Tue Sep 23, 8:04 am)
Re: Unified tracing buffer, Masami Hiramatsu, (Tue Sep 23, 8:21 am)
Re: Unified tracing buffer, Masami Hiramatsu, (Tue Sep 23, 8:23 am)
Re: Unified tracing buffer, Masami Hiramatsu, (Tue Sep 23, 8:30 am)
Re: Unified tracing buffer, Linus Torvalds, (Tue Sep 23, 8:46 am)
Re: Unified tracing buffer, Linus Torvalds, (Tue Sep 23, 9:01 am)
Re: Unified tracing buffer, Masami Hiramatsu, (Tue Sep 23, 10:04 am)
Re: Unified tracing buffer, Thomas Gleixner, (Tue Sep 23, 10:30 am)
Re: Unified tracing buffer, K.Prasad, (Tue Sep 23, 10:55 am)
Re: Unified tracing buffer, KOSAKI Motohiro, (Tue Sep 23, 10:59 am)
Re: Unified tracing buffer, Mathieu Desnoyers, (Tue Sep 23, 11:13 am)
Re: Unified tracing buffer, Martin Bligh, (Tue Sep 23, 11:27 am)
Re: Unified tracing buffer, Martin Bligh, (Tue Sep 23, 11:28 am)
Re: Unified tracing buffer, Christoph Lameter, (Tue Sep 23, 11:33 am)
Re: Unified tracing buffer, Linus Torvalds, (Tue Sep 23, 11:56 am)
Re: Unified tracing buffer, Masami Hiramatsu, (Tue Sep 23, 11:59 am)
Re: Unified tracing buffer, Thomas Gleixner, (Tue Sep 23, 12:36 pm)
Re: Unified tracing buffer, Martin Bligh, (Tue Sep 23, 12:38 pm)
Re: Unified tracing buffer, Thomas Gleixner, (Tue Sep 23, 12:41 pm)
Re: Unified tracing buffer, Martin Bligh, (Tue Sep 23, 12:50 pm)
Re: Unified tracing buffer, Thomas Gleixner, (Tue Sep 23, 1:03 pm)
Re: Unified tracing buffer, Masami Hiramatsu, (Tue Sep 23, 1:03 pm)
Re: Unified tracing buffer, Thomas Gleixner, (Tue Sep 23, 1:08 pm)
Re: [PATCH 1/3] relay - clean up subbuf switch, Andrew Morton, (Tue Sep 23, 1:15 pm)
Re: [PATCH 2/3] relay - make subbuf switch replaceable, Andrew Morton, (Tue Sep 23, 1:17 pm)
Re: [PATCH 3/3] relay - add channel flags, Andrew Morton, (Tue Sep 23, 1:20 pm)
Re: Unified tracing buffer, Martin Bligh, (Tue Sep 23, 2:02 pm)
Re: Unified tracing buffer, Tom Zanussi, (Tue Sep 23, 8:50 pm)
Re: [PATCH 3/3] relay - add channel flags, Tom Zanussi, (Tue Sep 23, 8:57 pm)
Re: Unified tracing buffer, K.Prasad, (Tue Sep 23, 10:42 pm)
[RFC PATCH 0/8] current relay cleanup patchset, Tom Zanussi, (Wed Sep 24, 11:07 pm)
[RFC PATCH 1/8] relay - Clean up relay_switch_subbuf() and ..., Tom Zanussi, (Wed Sep 24, 11:07 pm)
[RFC PATCH 2/8] relay - Make the relay sub-buffer switch c ..., Tom Zanussi, (Wed Sep 24, 11:07 pm)
[RFC PATCH 3/8] relay - Add channel flags to relay, remove ..., Tom Zanussi, (Wed Sep 24, 11:07 pm)
[RFC PATCH 4/8] relay - Add reserved param to switch-subbu ..., Tom Zanussi, (Wed Sep 24, 11:07 pm)
[RFC PATCH 5/8] relay - Map the first sub-buffer at the en ..., Tom Zanussi, (Wed Sep 24, 11:07 pm)
[RFC PATCH 6/8] relay - Replace relay_reserve/relay_write ..., Tom Zanussi, (Wed Sep 24, 11:07 pm)
[RFC PATCH 7/8] relay - Remove padding-related code from r ..., Tom Zanussi, (Wed Sep 24, 11:07 pm)
[RFC PATCH 8/8] relay - Clean up remaining padding-related ..., Tom Zanussi, (Wed Sep 24, 11:08 pm)
Re: Unified tracing buffer, Jason Baron, (Thu Oct 2, 8:28 am)
Re: Unified tracing buffer, Mathieu Desnoyers, (Fri Oct 3, 9:11 am)
Re: Unified tracing buffer, Jason Baron, (Fri Oct 3, 11:37 am)
Re: Unified tracing buffer, Mathieu Desnoyers, (Fri Oct 3, 12:10 pm)
Re: Unified tracing buffer, Jason Baron, (Fri Oct 3, 12:25 pm)
Re: Unified tracing buffer, Mathieu Desnoyers, (Fri Oct 3, 12:56 pm)
Re: Unified tracing buffer, Jason Baron, (Fri Oct 3, 1:25 pm)
Re: Unified tracing buffer, Frank Ch. Eigler, (Fri Oct 3, 2:52 pm)