linux-kernel - Re: [BUG] perf mem: perf mem report fails in TUI mode

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Date:	Wed, 10 Dec 2014 10:21:23 -0500
From:	Stephane Eranian <eranian@...gle.com>
To:	David Ahern <dsahern@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, Jiri Olsa <jolsa@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	Namhyung Kim <namhyung@...nel.org>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>
Subject: Re: [BUG] perf mem: perf mem report fails in TUI mode

On Wed, Dec 10, 2014 at 12:18 AM, David Ahern <dsahern@...il.com> wrote:
> On 12/9/14 9:15 PM, Stephane Eranian wrote:
>>
>> Hi,
>>
>> I was running a couple of tests with perf mem from tip.git and
>> found that perf mem -t load rep was failing only in TUI mode.
>> With --stdio, it works fine. I did a bit of investigation and found
>> out that the TUI mode is failing because some symbol (kernel)
>> is showing up with a huge (negative) size. I don't understand
>> the connection between the TUI vs. tty browser and symbols.
>>
>> To reproduce:
>>      $ perf mem -t load rec my_test_program
>>      $ perf mem -t load rep
>>      $ perf mem -t load rep --stdio
>>
>> Debugging with TUI is a pain, so I stopped.
>>
>> I have a patch to improve perf mem a bit but I'd like to get this problem
>> fixed first.
>>
>> Maybe you have a idea of what's going on.
>
>
> I usually avoid the TUI by not installing slang-devel.
>
> But, trying out Linus' current tip (a0e4467726c - post 3.18) this seems to
> work fine:
>     perf mem -t load rec ls
>     perf mem -t load rep
>
What about tip.git?

> But kernel version for the box is 3.16.6-203.fc20.x86_64.
>
> David
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