linux-kernel - Re: [tracing] ring

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Message-Id: <1242607182.6327.8.camel@localhost.localdomain>
Date:	Sun, 17 May 2009 20:39:42 -0400
From:	Jon Masters <jonathan@...masters.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [tracing] ring_buffer question

On Sun, 2009-05-17 at 17:08 -0400, Jon Masters wrote:

> Is there any reason you can think of why we don't just generalize
> kernel/trace/ring_buffer into kernel/ring_buffer, remove the static
> per_cpu buffer allocation and have this available for non-tracing?

Ignore the latter point - I realize that I can use ring_buffer_alloc,
etc. quite happily. I am doing that now in my smi_detector rewrite. But
I still think the RB is a little too tracing specific - so, perhaps we
can move it out of kernel/trace. I'll write up something once I've
figured out this stuff to go along with the excellent trace docs since
the generic ring buffer implementation is really quite sexy stuff.

[thinking out loud] Does the global disable stuff also disable other
non-tracing ring buffers?

Jon.

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