linux-kernel - Re: [PATCH 0/2] adding tracepoints to vhost

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Message-ID: <CAJSP0QWA1z6_YQe9hhpG7bCyZQarmU5NXbHsLGTL_zPTk3dOUA@mail.gmail.com>
Date:	Tue, 10 Apr 2012 12:40:50 +0100
From:	Stefan Hajnoczi <stefanha@...il.com>
To:	Jason Wang <jasowang@...hat.com>
Cc:	netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org, mst@...hat.com
Subject: Re: [PATCH 0/2] adding tracepoints to vhost

On Tue, Apr 10, 2012 at 3:58 AM, Jason Wang <jasowang@...hat.com> wrote:
> To help in vhost analyzing, the following series adding basic tracepoints to
> vhost. Operations of both virtqueues and vhost works were traced in current
> implementation, net code were untouched. A top-like satistics displaying script
> were introduced to help the troubleshooting.
>
> TODO:
> - net specific tracepoints?
>
> ---
>
> Jason Wang (2):
>      vhost: basic tracepoints
>      tools: virtio: add a top-like utility for displaying vhost satistics
>
>
>  drivers/vhost/trace.h   |  153 ++++++++++++++++++++
>  drivers/vhost/vhost.c   |   17 ++
>  tools/virtio/vhost_stat |  360 +++++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 528 insertions(+), 2 deletions(-)
>  create mode 100644 drivers/vhost/trace.h
>  create mode 100755 tools/virtio/vhost_stat

Perhaps this can replace the vhost log feature?  I'm not sure if
tracepoints support the right data types but it seems like vhost
debugging could be done using tracing with less code.

Stefan
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