[PATCH] usertools: suggest use of hwloc for new cpu

[Stephen Hemminger]

On Sun, 13 Aug 2023 02:12:03 +0000
"Varghese, Vipin" <Vipin.Varghese at amd.com> wrote:

> >
> > On Sat, 12 Aug 2023 06:27:20 +0530
> > Vipin Varghese <vipin.varghese at amd.com> wrote:
> >  
> > > Most modern processor now supports numa by partitioning NUMA based on
> > > CPU-IO & Last Level Cache within the same socket.
> > > As per the discussion in mailing list, suggesting the make use of
> > > hw-loc for such scenarios.
> > >
> > > Signed-off-by: Vipin Varghese <vipin.varghese at amd.com>  
> >
> > NAK, no scripting hwloc, it is ugly and creates a dependency that is not listed
> > in DPDK packaging.  
> 
> There is no calls to hwloc within in thescript. Hence not clear what does ` NAK, no scripting hwloc it is ugly and creates a dependency that is not listed in DPDK packaging.`.
> 
> Requesting to cross check why NAK is shared for `print` as suggestion. Hence, I have disagree to this.

Sorry, I misinterpreted what the print's were doing.
Better off not to list exact flags, the lstopo may change and user may want different
format anyway.

How about something like this?


 doc/guides/rel_notes/deprecation.rst | 5 +++++
 usertools/cpu_layout.py              | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 317875c5054b..25a116900dfb 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -185,3 +185,8 @@ Deprecation Notices
   will be deprecated and subsequently removed in DPDK 24.11 release.
   Before this, the new port library API (functions rte_swx_port_*)
   will gradually transition from experimental to stable status.
+
+* cpulayout: The CPU layout script is unable to deal with all the possible
+  complexities of modern CPU topology. Other existing tools offer more
+  features and do a better job with keeping up with innovations.
+  Therefore it will be deprecated and removed in a future release.
diff --git a/usertools/cpu_layout.py b/usertools/cpu_layout.py
index 891b9238fa19..37a4f9ff24b4 100755
--- a/usertools/cpu_layout.py
+++ b/usertools/cpu_layout.py
@@ -62,3 +62,8 @@
         else:
             output += " " * (max_core_map_len + 1)
     print(output)
+
+print("")
+print("This tool is unable to cope with complex NUMA layouts")
+print("and will be removed in a future release.")
+print("Suggest using lstopo or similar tools instead.")
-- 
2.39.2