From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH uq/master v2 0/2] Add some tracepoints for clarification of the cause of troubles Date: Fri, 29 Mar 2013 09:09:10 +0100 Message-ID: <51554C26.8090807@redhat.com> References: <51551779.9060403@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Cc: aliguori@us.ibm.com, "qemu-devel@nongnu.org" , kvm@vger.kernel.org, stefanha@linux.vnet.ibm.com To: Kazuya Saito Return-path: In-Reply-To: <51551779.9060403@jp.fujitsu.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org Sender: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org List-Id: kvm.vger.kernel.org Il 29/03/2013 05:24, Kazuya Saito ha scritto: > This series adds tracepoints for helping us clarify the cause of > troubles. Virtualization on Linux is composed of some components such > as qemu, kvm, libvirt, and so on. So it is very important to clarify > firstly and swiftly the cause of troubles is on what component of > them. Although qemu has useful information of this because it stands > among kvm, libvirt and guest, it doesn't output the information by > trace or log system. > These patches add tracepoints which lead to reduce the time of the > clarification. We'd like to add the tracepoints as the first set > because, based on our experience, we've found out they must be useful > for an investigation in the future. Without those tracepoints, > we had a really hard time investigating a problem since the problem's > reproducibility was quite low and there was no clue in the dump of > qemu. > > Changes from v1: > Add arg to kvm_ioctl, kvm_vm_ioctl, kvm_vcpu_ioctl tracepoints. > Add cpu_index to kvm_vcpu_ioctl, kvm_run_exit tracepoints. > > Kazuya Saito (2): > kvm-all: add kvm_ioctl, kvm_vm_ioctl, kvm_vcpu_ioctl tracepoints > kvm-all: add kvm_run_exit tracepoint > > kvm-all.c | 5 +++++ > trace-events | 7 +++++++ > 2 files changed, 12 insertions(+), 0 deletions(-) Series: Reviewed-by: Paolo Bonzini Paolo