From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Sam Ravnborg <sam@ravnborg.org>,
linux-kernel@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Steven Rostedt <rostedt@goodmis.org>
Subject: Re: Building a tracing userspace tool in the kernel tree
Date: Fri, 10 Oct 2008 00:15:13 +0200 [thread overview]
Message-ID: <1223590513.7382.45.camel@lappy.programming.kicks-ass.net> (raw)
In-Reply-To: <20081009191626.GA29344@Krystal>
On Thu, 2008-10-09 at 15:16 -0400, Mathieu Desnoyers wrote:
> Hi Sam,
>
> At the kernel summit, people seemed to be interested to have the basic
> userspace tools required to extract and pretty-print a trace available
> within the kernel tree. Therefore, what I am trying to do is something
> along the lines of
>
> ltt/usr/
> ltt/usr/tracectl/ (control tracing)
> ltt/usr/tracesplice/ (splice buffers to disk)
> ltt/usr/tracecat/ (merge sort and format the binary buffers into
> human-readable text)
I'd rather have you provide that interface from the kernel much like
ftrace does. So we can do:
# cat /debug/tracing/lttng/trace
next prev parent reply other threads:[~2008-10-09 22:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-09 19:16 Mathieu Desnoyers
2008-10-09 19:46 ` Andrew Morton
2008-10-09 22:15 ` Peter Zijlstra [this message]
2008-10-09 22:35 ` Chris Friesen
2008-10-09 22:40 ` Peter Zijlstra
2008-10-09 23:11 ` Chris Friesen
2008-10-09 23:12 ` Mathieu Desnoyers
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