From: Andi Kleen <andi@firstfloor.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Christoph Hellwig <hch@infradead.org>,
Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
Gregory Haskins <ghaskins@novell.com>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
"William L. Irwin" <sparclinux@vger.kernel.org>
Subject: Re: [RFC PATCH 00/11] mcount tracing utility
Date: Thu, 03 Jan 2008 19:05:42 +0100 [thread overview]
Message-ID: <p73wsqqg4y1.fsf@bingen.suse.de> (raw)
In-Reply-To: <20080103071609.478486470@goodmis.org> (Steven Rostedt's message of "Thu\, 03 Jan 2008 02\:16\:09 -0500")
Steven Rostedt <rostedt@goodmis.org> writes:
> The following patch series brings to vanilla Linux a bit of the RT kernel
> trace facility. This incorporates the "-pg" profiling option of gcc
> that will call the "mcount" function for all functions called in
> the kernel.
My personal feeling regarding this code was that it would be much simpler/cleaner
to implement a driver for the "jump tracer"s implemented in various CPUs.
Basically the CPU will write all jumps into a buffer by itself. That
allows you to do many traces (although not latency traces) too.
-Andi
next prev parent reply other threads:[~2008-01-03 18:05 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-03 7:16 Steven Rostedt
2008-01-03 7:16 ` [RFC PATCH 01/11] Add basic support for gcc profiler instrumentation Steven Rostedt
2008-01-03 8:31 ` Sam Ravnborg
2008-01-03 14:03 ` Steven Rostedt
2008-01-03 9:21 ` Ingo Molnar
2008-01-03 13:58 ` Steven Rostedt
2008-01-03 18:16 ` Chris Wright
2008-01-03 19:15 ` Steven Rostedt
2008-01-03 19:17 ` Chris Wright
2008-01-03 19:18 ` Jeremy Fitzhardinge
2008-01-03 16:01 ` Daniel Walker
2008-01-03 17:35 ` Mathieu Desnoyers
2008-01-03 17:55 ` Steven Rostedt
2008-01-03 7:16 ` [RFC PATCH 02/11] Add fastcall to do_IRQ for i386 Steven Rostedt
2008-01-03 17:36 ` Mathieu Desnoyers
2008-01-03 17:47 ` Steven Rostedt
2008-01-07 4:50 ` H. Peter Anvin
2008-01-07 12:42 ` Steven Rostedt
2008-01-03 7:16 ` [RFC PATCH 03/11] Annotate core code that should not be traced Steven Rostedt
2008-01-03 17:42 ` Mathieu Desnoyers
2008-01-03 18:07 ` Steven Rostedt
2008-01-03 18:34 ` Mathieu Desnoyers
2008-01-03 7:16 ` [RFC PATCH 04/11] i386: notrace annotations Steven Rostedt
2008-01-03 17:52 ` Mathieu Desnoyers
2008-01-03 7:16 ` [RFC PATCH 05/11] x86_64: " Steven Rostedt
2008-01-03 7:16 ` [RFC PATCH 06/11] add notrace annotations to vsyscall Steven Rostedt
2008-01-03 7:16 ` [RFC PATCH 07/11] mcount based trace in the form of a header file library Steven Rostedt
2008-01-03 7:16 ` [RFC PATCH 08/11] tracer add debugfs interface Steven Rostedt
2008-01-03 7:16 ` [RFC PATCH 09/11] mcount tracer output file Steven Rostedt
2008-01-03 7:16 ` [RFC PATCH 10/11] mcount tracer show task comm and pid Steven Rostedt
2008-01-03 17:56 ` Mathieu Desnoyers
2008-01-06 15:37 ` Ingo Molnar
2008-01-07 4:45 ` Mathieu Desnoyers
2008-01-09 16:45 ` Ingo Molnar
2008-01-03 7:16 ` [RFC PATCH 11/11] Add a symbol only trace output Steven Rostedt
2008-01-03 17:22 ` [RFC PATCH 00/11] mcount tracing utility Mathieu Desnoyers
2008-01-03 17:42 ` Steven Rostedt
2008-01-03 18:05 ` Andi Kleen [this message]
2008-01-04 6:42 ` Frank Ch. Eigler
2008-01-08 20:35 ` Tim Bird
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