From: David Ahern <dsahern@gmail.com>
To: Ingo Molnar <mingo@kernel.org>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>,
linux-kernel@vger.kernel.org, eranian@google.com,
adrian.hunter@intel.com, mingo@redhat.com, paulus@samba.org,
a.p.zijlstra@chello.nl, Pekka Enberg <penberg@iki.fi>
Subject: Re: [PATCH 0/4] Add support of guest user space symbols for perf kvm command.
Date: Thu, 19 Dec 2013 09:28:49 -0700 [thread overview]
Message-ID: <52B31EC1.6050403@gmail.com> (raw)
In-Reply-To: <20131219153453.GA20044@gmail.com>
On 12/19/13, 8:34 AM, Ingo Molnar wrote:
> Btw., having to specify a '--guestmount /tmp/guestmount/' just to
> achieve a natural feature (proper guest symbol resolution) is a poor
> user interface, obviously.
>
> Is there perhaps a predictable pattern as to where qemu (or libvirt)
> puts a user's guest mounts, or some other discovery method?
No, qemu does not export guest info to the host. A user has to create it
-- either using something like sshfs or copying the files. I tend to use
the latter as it is simpler.
David
>
> If yes then it would be possible to automatically look for that
> pattern, and use the guest filesystem when it's available, without the
> user having to manually configure the path.
>
> ( Ideally we'd have kernel help for discovering this, but last time I
> raised that with the KVM folks there was resistence. )
next prev parent reply other threads:[~2013-12-19 16:29 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-19 22:54 [PATCH 0/4] Add support of guest user space symbols for perf kvm command Dongsheng Yang
2013-12-19 14:12 ` Arnaldo Carvalho de Melo
2013-12-19 15:34 ` Ingo Molnar
2013-12-19 16:28 ` David Ahern [this message]
2013-12-19 22:54 ` [PATCH 1/4] perf tools: Add support of guest in synthesize_threads Dongsheng Yang
2013-12-19 14:21 ` Arnaldo Carvalho de Melo
2013-12-19 22:54 ` [PATCH 2/4] perf tools: Add support for PERF_RECORD_MISC_GUEST_USER in thread__find_addr_map() Dongsheng Yang
2013-12-19 22:54 ` [PATCH 3/4] perf tools: Add support of user space symbols for guest in perf kvm top Dongsheng Yang
2013-12-19 22:54 ` [PATCH 4/4] perf tools: Add support of user space symbols for guest in perf kvm record Dongsheng Yang
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