[libvirt] [PATCH 6/7] Rewrite all the DTrace/SystemTAP probing

[Daniel P. Berrange]

On Fri, Oct 07, 2011 at 12:01:18PM -0600, Eric Blake wrote:
> On 10/07/2011 09:56 AM, Daniel P. Berrange wrote:
> >+libvirt_functions.stp: $(wildcard */*.x) $(srcdir)/rpc/gensystemtap.pl
> >+	$(AM_V_GEN)perl -w $(srcdir)/rpc/gensystemtap.pl $(wildcard */*.x)>  $@
> 
> Does this still work in VPATH builds?  If not, we may need some
> followup patches.  Maybe even just $(wildcard $(srcdir)/*/*.x) is
> sufficient?

I'll check that.

> 
> >+/* The double cast is necessary to silence gcc warnings; any pointer
> >+ * can safely go to intptr_t and back to void *, which collapses
> >+ * arrays into pointers; while any integer can be widened to intptr_t
> >+ * then cast to void *.  */
> >+#  define VIR_ADD_CASTXXXX(a) ((void *)(intptr_t)(a))
> >+#  define VIR_ADD_CAST(a) (a)
> 
> This doesn't quite match what used to be in libvirtd.h; in
> particular, the VIR_ADD_CASTXXXX is unused, but its body used to be
> in VIR_ADD_CAST.  What's going on there?  But this patch is already
> big enough that I'm okay if you commit it now, then we touch it up
> to once again fix compilation with systemtap 1.2 headers as a later
> patch.

This is a mistake. I had temporarily commented out the proper
def, for debugging something.


Daniel
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