linux-kernel - Re: [PATCH v5 05/15] tools: ynl_gen_rst.py: make the index parser more generic

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Message-ID: <20250618085735.7f9aa5a6@foz.lan>
Date: Wed, 18 Jun 2025 08:57:35 +0200
From: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To: Simon Horman <horms@...nel.org>
Cc: Linux Doc Mailing List <linux-doc@...r.kernel.org>, Jonathan Corbet
 <corbet@....net>, Akira Yokosawa <akiyks@...il.com>, Breno Leitao
 <leitao@...ian.org>, "David S. Miller" <davem@...emloft.net>, Donald Hunter
 <donald.hunter@...il.com>, Eric Dumazet <edumazet@...gle.com>, Ignacio
 Encinas Rubio <ignacio@...cinas.com>, Jan Stancek <jstancek@...hat.com>,
 Marco Elver <elver@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Ruben
 Wauters <rubenru09@....com>, Shuah Khan <skhan@...uxfoundation.org>,
 joel@...lfernandes.org, linux-kernel-mentees@...ts.linux.dev,
 linux-kernel@...r.kernel.org, lkmm@...ts.linux.dev, netdev@...r.kernel.org,
 peterz@...radead.org, stern@...land.harvard.edu
Subject: Re: [PATCH v5 05/15] tools: ynl_gen_rst.py: make the index parser
 more generic

Em Tue, 17 Jun 2025 12:59:27 +0100
Simon Horman <horms@...nel.org> escreveu:

> On Tue, Jun 17, 2025 at 10:02:02AM +0200, Mauro Carvalho Chehab wrote:
> > It is not a good practice to store build-generated files
> > inside $(srctree), as one may be using O=<BUILDDIR> and even
> > have the Kernel on a read-only directory.
> > 
> > Change the YAML generation for netlink files to allow it
> > to parse data based on the source or on the object tree.
> > 
> > Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> > ---
> >  tools/net/ynl/pyynl/ynl_gen_rst.py | 22 ++++++++++++++++------
> >  1 file changed, 16 insertions(+), 6 deletions(-)
> > 
> > diff --git a/tools/net/ynl/pyynl/ynl_gen_rst.py b/tools/net/ynl/pyynl/ynl_gen_rst.py
> > index 7bfb8ceeeefc..b1e5acafb998 100755
> > --- a/tools/net/ynl/pyynl/ynl_gen_rst.py
> > +++ b/tools/net/ynl/pyynl/ynl_gen_rst.py
> > @@ -365,6 +365,7 @@ def parse_arguments() -> argparse.Namespace:
> >  
> >      parser.add_argument("-v", "--verbose", action="store_true")
> >      parser.add_argument("-o", "--output", help="Output file name")
> > +    parser.add_argument("-d", "--input_dir", help="YAML input directory")
> >  
> >      # Index and input are mutually exclusive
> >      group = parser.add_mutually_exclusive_group()
> > @@ -405,11 +406,14 @@ def write_to_rstfile(content: str, filename: str) -> None:
> >      """Write the generated content into an RST file"""
> >      logging.debug("Saving RST file to %s", filename)
> >  
> > +    dir = os.path.dirname(filename)
> > +    os.makedirs(dir, exist_ok=True)
> > +
> >      with open(filename, "w", encoding="utf-8") as rst_file:
> >          rst_file.write(content)  
> 
> Hi Mauro,
> 
> With this patch applied I see the following, which did not happen before.

Thanks! this was an intermediate step. I'll just drop this patch and
fix conflicts at the next version.

> 
> $ make -C tools/net/ynl
> ...
> Traceback (most recent call last):
>   File ".../tools/net/ynl/generated/../pyynl/ynl_gen_rst.py", line 464, in <module>
>     main()
>     ~~~~^^
>   File ".../tools/net/ynl/generated/../pyynl/ynl_gen_rst.py", line 456, in main
>     write_to_rstfile(content, args.output)
>     ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
>   File ".../tools/net/ynl/generated/../pyynl/ynl_gen_rst.py", line 410, in write_to_rstfile
>     os.makedirs(dir, exist_ok=True)
>     ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
>   File "<frozen os>", line 227, in makedirs
> FileNotFoundError: [Errno 2] No such file or directory: ''
> make[1]: *** [Makefile:55: conntrack.rst] Error 1
> 



Thanks,
Mauro