On Sat, Oct 05, 2019 at 09:31:23PM +0200, Jonathan Neuschäfer wrote:
> On Sat, Oct 05, 2019 at 06:33:30AM -0700, Paul E. McKenney wrote:
> > On Sat, Oct 05, 2019 at 01:23:28AM +0200, Jonathan Neuschäfer wrote:
> > > On Fri, Oct 04, 2019 at 03:24:39PM -0700, Paul E. McKenney wrote:
> > > > On Fri, Oct 04, 2019 at 11:54:02PM +0200, Jonathan Neuschäfer wrote:
> > > > > Without this patch, Sphinx shows "variable arguments" as the
> > > > > description
> > > > > of the cond argument, rather than the intended description, and prints
> > > > > the following warnings:
> > > > >
> > > > > ./include/linux/rculist.h:374: warning: Excess function parameter
> > > > > 'cond' description in 'list_for_each_entry_rcu'
> > > > > ./include/linux/rculist.h:651: warning: Excess function parameter
> > > > > 'cond' description in 'hlist_for_each_entry_rcu'
> > >
> > > Hmm, small detail that I didn't realize before: It's actually the
> > > kernel-doc script, not Sphinx, that can't deal with variadic macro
> > > arguments and thus requires this patch.
> > >
> > > So it may also be possible to fix the script instead. (I have not
> > > looked into how much work that would be.)
> >
> > OK, thank you for letting me know. I will keep your patch for the
> > moment, but please let me know if the fix can be elsewhere.
> >
> > Thanx, Paul
>
> Turns out the actual fix in scripts/kernel-doc is easy enough:
>
> --- a/scripts/kernel-doc
> +++ b/scripts/kernel-doc
> @@ -1449,6 +1449,10 @@ sub push_parameter($$$$) {
> # handles unnamed variable parameters
> $param = "...";
> }
> + elsif ($param =~ /\w\.\.\.$/) {
> + # for named variable parameters of the form `x...`, remove the
> dots
> + $param =~ s/\.\.\.$//;
> + }
> if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq
> "") {
> $parameterdescs{$param} = "variable arguments";
> }
>
> ... but there are other macros in the code base that are documented
> using the 'x...' syntax, so I guess it's best to take my initial patch
> (or something similar) now, and I'll fix kernel-doc later, in a longer
> patchset that also cleans up the fallout.
You got it! ;-)
Thanx, Paul
