linux-kernel - Re: [PATCH 0/4] perf record: Cleanups and mmap-based output

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Message-ID: <20131107080614.GF31926@gmail.com>
Date:	Thu, 7 Nov 2013 09:06:14 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	David Ahern <dsahern@...il.com>
Cc:	acme@...stprotocols.net, linux-kernel@...r.kernel.org,
	jolsa@...hat.com,
	Frédéric Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCH 0/4] perf record: Cleanups and mmap-based output


* David Ahern <dsahern@...il.com> wrote:

> I know Jiri is working on cleanups of the output file, but had this
> sitting around for a couple of weeks now. Might as well push it out
> for the next baseline. The cleanups of perf-record can be taken
> independently.
> 
> Ingo: I took a look at leveraging the copy_user_nocache and was not able
>       to get it to work. I won't have time to come back to it for a while.
>       Given that the mmap output already improves perf-trace a lot I would
>       like to get the option into 3.13 and come back to the optimization
>       later.

That's OK - your feature is already a big step forward!

1-3 look good to me and 4/4 needs some minor cleanups (see my review 
mail).

Thanks,

	Ingo
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