linux-kernel - Re: [PATCH] perf: fix perf-lock report coredump

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Message-ID: <CACV3sbLMOVm=WFofjc8-3pRvy1JduYVKWGY=EakjfhtftZPQ9A@mail.gmail.com>
Date:	Wed, 11 Jul 2012 13:14:37 +0800
From:	Jovi Zhang <bookjovi@...il.com>
To:	David Ahern <dsahern@...il.com>
Cc:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf: fix perf-lock report coredump

On Wed, Jul 11, 2012 at 10:20 AM, David Ahern <dsahern@...il.com> wrote:
> On 7/10/12 7:06 PM, Jovi Zhang wrote:
>>
>>  From 4b363bf16c12b76788fbace1475123b7214ae58d Mon Sep 17 00:00:00 2001
>> From: Jovi Zhang <bookjovi@...il.com>
>> Date: Wed, 11 Jul 2012 16:53:57 +0800
>> Subject: [PATCH] perf: fix perf-lock report coredump
>>
>> Check sample type event raw_data is existed in perf.data firstly,
>> then invoke process_raw_event, otherwise it will coredump.
>
>
> Does this fix it for you:
> http://lkml.org/lkml/2012/7/6/405
>
Yeah, same problem.
But the question is if there have some sample event with raw data in
perf.data, are we still just exit(1)?
or let perf-lock only report those sample events with raw data?

> Also does 'perf lock record' work for you? If so can you send me your kernel
> config file?
Not working. I assume LOCKDEP is not configured in my test machine.

>
> Thanks,
>
> David
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