Re: [Xen-devel] Debug event_channel.c

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2011-09-27 at 12:36 +0100, Daniel Castro wrote:
> On Tue, Sep 27, 2011 at 8:33 PM, Andrew Cooper
> <andrew.cooper3@xxxxxxxxxx> wrote:
> > On 27/09/11 12:09, Daniel Castro wrote:
> >> Hello All,
> >>
> >> I am trying to debug event_channel.c for this I have filled the
> >> functions with gdprintk(XENLOG_WARNING, "..."); yet the messages are
> >> not displayed on dmesg or /var/log/xen. Where could they be printed?
> >> or should I use a different function?
> >>
> >> In grub I have loglvl=all to print all messages...
> >>
> >> Thanks for the answer,
> >>
> >> Daniel
> >>
> >
> > gdprintk only gets set with guest debugging enabled. ( guest_loglvl on
> > the command line )
> >
> > My suggestion would be to just use regular printks and look at the
> > serial log.
> 
> How can can I look at the serial log from dom0?

'xl dmesg' (or using a serial cable of course ;-))

You can also add XENCONSOLED_TRACE=hv in /etc/sysconfig/xencommons (or
the equivalent on your distro, the effect should be to add --log=hv to
the xenconsoled command line). Then the xen console will be logged
under /var/log/xen somewhere.

Ian.

> 
> >
> > --
> > Andrew Cooper - Dom0 Kernel Engineer, Citrix XenServer
> > T: +44 (0)1223 225 900, http://www.citrix.com
> >
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-devel
> >
> 
> 
> 



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