linux-kernel - Re: [PATCH 13/23] perf tools: Introduce perf.data version 3 format

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Message-ID: <20130722100006.GB14350@krava.brq.redhat.com>
Date:	Mon, 22 Jul 2013 12:00:06 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Andi Kleen <ak@...ux.intel.com>,
	David Ahern <dsahern@...il.com>
Subject: Re: [PATCH 13/23] perf tools: Introduce perf.data version 3 format

On Fri, Jul 19, 2013 at 09:06:22PM +0900, Namhyung Kim wrote:
> On Wed, 17 Jul 2013 19:49:53 +0200, Jiri Olsa wrote:
> > Introducing perf.data version 3 format. No functional change,
> > just introducing doc, magic bytes and the struct.
> >
> [SNIP]
> 
> > +perf-data-file-v3(1)
> 
> s/(1)/(5)/
> 
> The same goes to v2 doc.
ok

> 
> 
> > +====================
> > +Following text describes version 3 of the perf data file format,
> > +which is version that is currently used by perf tool.
> > +
> > +In version 3 we got rid of following sections:
> > +  EVENT IDS
> > +  EVENT ATTRIBUTES
> > +  EVENT TYPES
> > +
> > +and keep only data and features sections. All the data
> > +from above listed sections are now read from specific
> > +FEATURES sections.
> > +
> > +benefits:
> > +  - siplified header storage at the time the file is closed
> 
> s/siplified/simplified/
ok

> 
> 
> > +  - allowing cpu hotpluged addition/removal event IDs
> > +    during the session due to 1)

it's the first '-' before I switched from numbering to '-' ;-) will fix

thanks,
jirka
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