linux-kernel - Re: [PATCH 1/3] perf, tool: Force guest machine definition option

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Date:	Thu, 12 Apr 2012 08:40:37 -0600
From:	David Ahern <dsahern@...il.com>
To:	Jiri Olsa <jolsa@...hat.com>
CC:	acme@...hat.com, a.p.zijlstra@...llo.nl, mingo@...e.hu,
	paulus@...ba.org, cjashfor@...ux.vnet.ibm.com, fweisbec@...il.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] perf, tool: Force guest machine definition option

On 4/12/12 6:21 AM, Jiri Olsa wrote:
> Running 'perf kvm record' without any of following options:
>    --guestmount
>    --guestvmlinux
>    --guestkallsyms
>    --guestmodules
>
> is causing the guest machine to be ommited from the data file,
> and all guest samples are counted in nr_unprocessable_samples.

Even with guestmount specified you can hit this path -- e.g., no 
pid-based directory under guestmount for a VM.

David
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