From: Avi Kivity <avi@redhat.com>
To: Xiao Guangrong <xiaoguangrong.eric@gmail.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>,
Ingo Molnar <mingo@elte.hu>,
Arnaldo Carvalho de Melo <acme@infradead.org>,
Stefan Hajnoczi <stefanha@gmail.com>,
LKML <linux-kernel@vger.kernel.org>, KVM <kvm@vger.kernel.org>
Subject: Re: [PATCH v2 2/3] KVM: x86: add tracepoints to trace mmio begin and complete
Date: Thu, 02 Feb 2012 19:36:32 +0200 [thread overview]
Message-ID: <4F2AC9A0.7090904@redhat.com> (raw)
In-Reply-To: <4F2AC790.1090805@gmail.com>
On 02/02/2012 07:27 PM, Xiao Guangrong wrote:
> From: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
>
> 'perf kvm-events' will use kvm_exit and kvm_mmio(read...) to calculate
> mmio read emulated time for the old kernel, in order to trace mmio read
> event more exactly, we add kvm_mmio_begin to trace the time when mmio read
> begins
>
> Also, add kvm_mmio_done to trace the time when mmio/pio is completed
Previously, we discussed using the kvm_entry to do this. This reduces
the number of tracepoints, and is backwards compatible. What was the
conclusion?
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-02-02 17:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-02 17:25 [PATCH v2] KVM: perf: a smart tool to analyse kvm events Xiao Guangrong
2012-02-02 17:26 ` [PATCH v2 1/3] KVM: x86: move kvm_exit related definitions into kvm_exit.h Xiao Guangrong
2012-02-02 17:30 ` Avi Kivity
2012-02-02 17:48 ` Xiao Guangrong
2012-02-02 17:27 ` [PATCH v2 2/3] KVM: x86: add tracepoints to trace mmio begin and complete Xiao Guangrong
2012-02-02 17:36 ` Avi Kivity [this message]
2012-02-02 17:55 ` Xiao Guangrong
2012-02-02 17:56 ` Avi Kivity
2012-02-02 18:27 ` Xiao Guangrong
2012-02-02 18:43 ` Xiao Guangrong
2012-02-02 17:28 ` [PATCH v2 3/3] KVM: perf: kvm events analysis tool Xiao Guangrong
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