linux-kernel - Re: [PATCH 2/4] perf tools: allow user to specify hardware breakpoint bp

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Message-ID: <20140603115503.GA2864@krava.brq.redhat.com>
Date:	Tue, 3 Jun 2014 13:55:03 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Namhyung Kim <namhyung@...il.com>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Jacob Shin <jacob.w.shin@...il.com>,
	Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Ingo Molnar <mingo@...nel.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	xiakaixu <xiakaixu@...wei.com>
Subject: Re: [PATCH 2/4] perf tools: allow user to specify hardware
 breakpoint bp_len

On Tue, Jun 03, 2014 at 10:36:22AM +0900, Namhyung Kim wrote:
> Hi Jiri,
> 
> On Fri, 30 May 2014 15:39:06 +0200, Jiri Olsa wrote:
> > On Thu, May 29, 2014 at 05:26:51PM +0200, Frederic Weisbecker wrote:
> >> From: Jacob Shin <jacob.w.shin@...il.com>
> >> 
> >> Currently bp_len is given a default value of 4. Allow user to override it:
> >> 
> >>   $ perf stat -e mem:0x1000/8
> >>                             ^
> >>                             bp_len
> >> 
> >> If no value is given, it will default to 4 as it did before.
> >
> > Namhyung,
> > both perf tols patches from this patchset mess up with hists
> > tests..  I havent found any connection yet.. any idea? ;-)
> 
> So you already found the problem in the hpp->elide change and that's the
> reason of the failure, right? :)

I haven't got a chance to test it yet.. but it looks like
thats the case.. I'll retest soon ;-)

jirka
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