Re: [Xen-devel] getting debug output from Xen during domain creation

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

Looks like I may have foxed you --- I modified the MEM_LOG definition
this morning in response to your earlier email. Before that it wasn't
gated on NDEBUG. So if you run your debug build now then you should
get useful output.

 -- Keir


> Well ...
> 
> 1) MEM_LOG is gated by NDEBUG:
> #ifndef NDEBUG
> #define MEM_LOG(_f, _a...)                           \
>   printk("DOM%llu: (file=memory.c, line=%d) " _f "\n", \
>          current->domain, __LINE__, ## _a )
> 
> #else
> #define MEM_LOG(_f, _a...) ((void)0)
> #endif
> 
> 2) I've checked the C preprocessor output - and the printf statements
> are being generated.
> 
> 3) Just for grins I've checked the output of strings on the object file
> to make sure that the strings were in fact there.
> 
> 
> I think something else is going on.
> 
> 
>                       -Kip
> 
> 
> On Sun, 22 Feb 2004, Ian Pratt wrote:
> 
> >
> > > I've removed the DNDEBUG from xen/arch/i386/Rules.mk. However, during
> > > a failed mmu_update I'm not seeing anything in /var/log/messages or any
> > > output from xen_read_console.
> >
> > Try enabling MEM_LOG in xen/common/memory.c  [*]
> >
> > This should probably be the default for DEBUG builds.
> >
> > Ian
> >
> > [*] Last time I looked, the macro was missing a '\' which you'll
> > need.
> >
> >
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