linux-kernel - Re: blktrace ftrace plugin, was Re: Receive side performance issue with multi-10-GigE and NUMA

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Message-ID: <20090827052628.GE12579@kernel.dk>
Date:	Thu, 27 Aug 2009 07:26:28 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Ingo Molnar <mingo@...e.hu>, rostedt@...dmis.org,
	fweisbec@...il.com, acme@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: blktrace ftrace plugin, was Re: Receive side performance issue
	with multi-10-GigE and NUMA

On Wed, Aug 26 2009, Christoph Hellwig wrote:
> On Wed, Aug 26, 2009 at 10:40:27PM +0200, Ingo Molnar wrote:
> > We are also converting non-trivial plugins to generic tracepoints. A 
> > recent example are the system call tracepoints, but we also 
> > converted blktrace and kmemtrace to generic tracepoints.
> 
> On something semi-related:  Any reason to keep the blktrace ftrace
> plugin around?  I don't think there's much point in it.  It only got
> added in 2.6.29, and all the blktrace tooling just uses the legacy
> ioctls.  All new uses should just use the TRACE_EVENT output.

Lets kill it.

-- 
Jens Axboe

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