linux-kernel - Re: [RFC] perf record: missing buildid for callstack modules

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Message-ID: <20160113102107.GA9644@gmail.com>
Date:	Wed, 13 Jan 2016 11:21:07 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>,
	Namhyung Kim <namhyung@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Jiri Olsa <jolsa@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>
Subject: Re: [RFC] perf record: missing buildid for callstack modules


* Arnaldo Carvalho de Melo <acme@...nel.org> wrote:

> > And this would (obviously) be a good time to see what else we'd like to
> > stuff in there.
> 
> Perhaps a version number? Else we'll be using those reserved bits again
> when we decide to introduce MMAP4 ;-\

No version numbers please. Cannot we have a size field and be done with it? The 
size is the 'version', if we only ever expand the record. (which is the typical 
case)

Thanks,

	Ingo