linux-kernel - Re: [PATCH] perf tools: Exit recording if events have non matching sample type

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Date:	Fri, 21 Oct 2011 16:43:03 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	David Ahern <dsahern@...il.com>
Cc:	"Xu, Anhua" <anhua.xu@...el.com>,
	"acme@...hat.com" <acme@...hat.com>,
	"a.p.zijlstra@...llo.nl" <a.p.zijlstra@...llo.nl>,
	"mingo@...e.hu" <mingo@...e.hu>,
	"paulus@...ba.org" <paulus@...ba.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf tools: Exit recording if events have non matching
 sample type

On Fri, Oct 21, 2011 at 08:29:53AM -0600, David Ahern wrote:
> 
> 
> On 10/21/2011 08:16 AM, David Ahern wrote:
> > 
> > 
> > On 10/21/2011 02:10 AM, Jiri Olsa wrote:
> >> On Fri, Oct 21, 2011 at 03:18:31PM +0800, Xu, Anhua wrote:
> >>> I installed the latest kernel and found without such patch( not sure if other patches were added besides this one). That following command works fine.
> >>> perf record -o perf.data -e ext3:ext3_request_inode -e LLC-loads -- date '+%F'
> >> hi,
> >> was there any ext3 event stored? The issue should be hit when
> >> processing stored events.. either in the atexit code or during
> >> report.
> >>
> >> Following command freezes for me on 3.1.0-rc10-tip+:
> >> ./perf record -o perf.data -e ext4:ext4_request_inode -e LLC-loads -- date '+%F'
> >>
> > 
> > With -B and it doesn't for me. Without the -B argument the backtrace
> > shows it stuck here:
> 
> While it doesn't hang with the -B, the data file is worthless --
> non-matching sample type. :-)

right :) there's check when the session is opened for reading

jirka
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