From: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
To: David Ahern <dsahern@gmail.com>
Cc: acme@ghostprotocols.net, linux-kernel@vger.kernel.org,
mingo@kernel.org, namhyung.kim@lge.com, jolsa@redhat.com
Subject: Re: [PATCH 0/7 V2] Add support of user space symboles for guest.
Date: Mon, 30 Dec 2013 10:32:25 -0500 [thread overview]
Message-ID: <52C19209.7060404@cn.fujitsu.com> (raw)
In-Reply-To: <52B45BF6.1060701@gmail.com>
On 12/20/2013 10:02 AM, David Ahern wrote:
> On 12/20/13, 1:52 PM, Dongsheng Yang wrote:
>> Hi Arnaldo:
>> Please help to review this patchset.
>>
>> Changelog:
>> - v2:
>> * splite the first commit.
>>
>
> At best you are creating knowledge of running tasks in the VMs when
> the perf session is started. That's it. That information cannot be
> used since the host has no idea what task is running in a VM at any
> given moment. No insight into process creation, mmaps, exits, etc.
>
Yes, you are right. host has no idea what task is running in a VM.
Thanx for your reply.
Yang
> David
>
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next prev parent reply other threads:[~2013-12-30 3:00 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-20 20:52 [PATCH 0/7 V2] Add support of user space symboles for guest Dongsheng Yang
2013-12-20 15:02 ` David Ahern
2013-12-30 15:32 ` Dongsheng Yang [this message]
2013-12-20 20:52 ` [PATCH 1/7] perf tools: Add support for PERF_RECORD_MISC_GUEST_USER in thread__find_addr_map() Dongsheng Yang
2014-01-12 18:36 ` [tip:perf/core] " tip-bot for Dongsheng Yang
2013-12-20 20:52 ` [PATCH 2/7] perf tools: Find the proc info under machine->root_dir Dongsheng Yang
2014-01-12 18:37 ` [tip:perf/core] perf tools: Find the proc info under machine-> root_dir tip-bot for Dongsheng Yang
2013-12-20 20:52 ` [PATCH 3/7] perf tools: Set event->header.misc to PERF_RECORD_MISC_GUEST_USER if machine is guest Dongsheng Yang
2014-01-12 18:37 ` [tip:perf/core] perf tools: Set event-> header.misc " tip-bot for Dongsheng Yang
2013-12-20 20:52 ` [PATCH 4/7] perf tools: Use machine->pid for tgid if mahicne " Dongsheng Yang
2014-01-12 18:37 ` [tip:perf/core] perf tools: Use machine-> pid for tgid if machine " tip-bot for Dongsheng Yang
2013-12-20 20:53 ` [PATCH 5/7] perf tools: Do not synthesize the treads of default guest Dongsheng Yang
2014-01-12 18:37 ` [tip:perf/core] " tip-bot for Dongsheng Yang
2013-12-20 20:53 ` [PATCH 6/7] perf tools: Add support of user space symbols for guest in perf kvm top Dongsheng Yang
2013-12-20 20:53 ` [PATCH 7/7] perf tools: Add support of user space symbols for guest in perf kvm record Dongsheng Yang
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