Re: [Xen-devel] [PATCH 4/4] xen: add a gcov Kconfig option

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Tue, Aug 30, 2016 at 06:56:36AM -0600, Jan Beulich wrote:
> >>> On 30.08.16 at 14:01, <wei.liu2@xxxxxxxxxx> wrote:
> > Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
> 
> Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
> 
> with one adjustment (see below).
> 
> > Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> > Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
> > Cc: Tim Deegan <tim@xxxxxxx>
> > Cc: Doug Goldstein <cardoe@xxxxxxxxxx>
> > 
> > Would like to have it default to DEBUG, but we also need to check
> > compiler to be gcc. I couldn't figure out how to check compiler to be
> > gcc in Kconfig.
> 
> Actually I don't think defaulting to DEBUG would have been a good
> idea. Why would you want everyone to carry that extra baggage
> regardless of whether they actually mean to make use of it? And
> anyway, conversion to Kconfig should retain current behavior, which
> clearly was ...
> 
> > --- a/Config.mk
> > +++ b/Config.mk
> > @@ -20,9 +20,6 @@ or       = $(if $(strip $(1)),$(1),$(if $(strip 
> > $(2)),$(2),$(if $(strip $(3)),$(
> >  debug ?= y
> >  debug_symbols ?= $(debug)
> >  
> > -# Test coverage support
> > -coverage ?= n
> 
> ... off by default.
> 

OK. Makes sense to me.

> > --- a/xen/Kconfig.debug
> > +++ b/xen/Kconfig.debug
> > @@ -13,6 +13,11 @@ config DEBUG
> >  
> >  if DEBUG || EXPERT = "y"
> >  
> > +config GCOV
> > +       bool "Gcov Support"
> > +       ---help---
> > +         Enable gcov (a test coverage program in GCC) support.
> > +
> >  config CRASH_DEBUG
> >     bool "Crash Debugging Support"
> >     depends on X86
> 
> I now see that someone prior to you already managed to break the
> alphabetical ordering (DEVICE_TREE_DEBUG got added to the end),
> but please don't introduce further issues like this. The only exception
> here are entries which have dependencies on others in this same
> section (like PERF_ARRAYS depends on PERF_COUNTERS).
> 

OK. I will move this option to correct location.

Wei.

> Jan
> 

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