Re: Tracing block devices (was: Re: [Qemu-devel] Static tracepoint control via trace-event)

2010-10-21 Thread Richard W.M. Jones
On Thu, Oct 21, 2010 at 07:20:27AM +0200, Christoph Hellwig wrote: On Tue, Oct 19, 2010 at 03:29:51PM +0100, Richard W.M. Jones wrote: On Tue, Oct 19, 2010 at 03:59:36PM +0200, Jan Kiszka wrote: Once we have -trace events=..., defining the list of active tracepoints before starting qemu

Re: Tracing block devices (was: Re: [Qemu-devel] Static tracepoint control via trace-event)

2010-10-21 Thread Stefan Hajnoczi
On Thu, Oct 21, 2010 at 6:20 AM, Christoph Hellwig h...@lst.de wrote: On Tue, Oct 19, 2010 at 03:29:51PM +0100, Richard W.M. Jones wrote: On Tue, Oct 19, 2010 at 03:59:36PM +0200, Jan Kiszka wrote: Once we have -trace events=..., defining the list of active tracepoints before starting qemu

Re: Tracing block devices (was: Re: [Qemu-devel] Static tracepoint control via trace-event)

2010-10-21 Thread Daniel P. Berrange
On Tue, Oct 19, 2010 at 03:29:51PM +0100, Richard W.M. Jones wrote: On Tue, Oct 19, 2010 at 03:59:36PM +0200, Jan Kiszka wrote: Once we have -trace events=..., defining the list of active tracepoints before starting qemu will be trivial (e.g. via a config file). Of course, this requires

Re: Tracing block devices (was: Re: [Qemu-devel] Static tracepoint control via trace-event)

2010-10-20 Thread Christoph Hellwig
On Tue, Oct 19, 2010 at 03:29:51PM +0100, Richard W.M. Jones wrote: On Tue, Oct 19, 2010 at 03:59:36PM +0200, Jan Kiszka wrote: Once we have -trace events=..., defining the list of active tracepoints before starting qemu will be trivial (e.g. via a config file). Of course, this requires

Tracing block devices (was: Re: [Qemu-devel] Static tracepoint control via trace-event)

2010-10-19 Thread Richard W.M. Jones
On Tue, Oct 19, 2010 at 03:59:36PM +0200, Jan Kiszka wrote: Once we have -trace events=..., defining the list of active tracepoints before starting qemu will be trivial (e.g. via a config file). Of course, this requires that all tracepoints are built-in... Sorry that I've not been following

Re: Tracing block devices (was: Re: [Qemu-devel] Static tracepoint control via trace-event)

2010-10-19 Thread Stefan Hajnoczi
On Tue, Oct 19, 2010 at 03:29:51PM +0100, Richard W.M. Jones wrote: On Tue, Oct 19, 2010 at 03:59:36PM +0200, Jan Kiszka wrote: Once we have -trace events=..., defining the list of active tracepoints before starting qemu will be trivial (e.g. via a config file). Of course, this requires