linux-kernel - Re: [PATCH 0/3] ftrace: overrun accounting and trace

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Message-ID: <20080422133344.GE7311@elte.hu>
Date:	Tue, 22 Apr 2008 15:33:44 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org,
	Peter Zijlstra <peterz@...radead.org>,
	Soeren Sandmann Pedersen <sandmann@...hat.com>,
	Pekka Paalanen <pq@....fi>
Subject: Re: [PATCH 0/3] ftrace: overrun accounting and trace_pipe headers


* Steven Rostedt <rostedt@...dmis.org> wrote:

> The first patch in this series adds accounting to record overruns. 
> That is where the writing catches up to the reading of the buffer. 
> This really only matters for trace_pipe since that's a consumer / 
> producer output file.
> 
> The next patch adds new methods for the plugins to hook into the 
> open_pipe and open_read, to let a plugin produce a header. The 
> open_read method can also be used to do something when overruns are 
> detected.

thanks, applied.

> The last patch is a test patch AND SHOULD NOT BE APPLIED. It is just 
> an example in how to use the new methods to produce a header. It 
> simply makes the ftrace tracer produce a simple "Test header" before 
> any output.

thanks, not applied ;-)

	Ingo
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