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Re: [Qemu-devel] [PATCH uq/master v2 0/2] Add some tracepoints for clari
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [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 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130311 Thunderbird/17.0.4 |
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 <address@hidden>
Paolo