Messages in this thread | | | Date | Sun, 12 Jul 2015 21:39:30 -0400 (EDT) | From | Vivien Didelot <> | Subject | Re: [PATCH v2] net: dsa: mv88e6xxx: add write access to debugfs regs file |
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Hi David,
On Jul 11, 2015, at 10:08 PM, David davem@davemloft.net wrote:
> From: Vivien Didelot <vivien.didelot@savoirfairelinux.com> > Date: Sat, 11 Jul 2015 14:36:12 -0400 (EDT) > >> In the meantime, this is really useful for development. i.e. ensuring a good >> switchdev/DSA interaction without being able to read and write directly the >> hardware VLAN table, is a bit a PITA. A dynamic debugfs looked appropriate. > > For "development" you can hack the driver, add tracepoints, or use > another mechanism anyone hacking the kernel (which by definition > someone doing "development" is doing) can do. > > I do not buy any of your arguments, and you really miss the grand > opportunity to export the knobs and values in a way which are going > to: > > 1) Be useful to users > > 2) Be usable by any similar DSA driver, not just _yours_
I hardly see how this debug interface can be made generic to other DSA drivers, since the format of hardware tables or some registers seem very specific to the switch chip.
> So please stop this myopic narrow thinking when you add facilities for > development or export values. Think of the big picture and long term, > not just your personal perceived immediate needs of today.
I understand. So it looks like the only reasonable solution here is to revert this support for the debugfs interface.
Thanks, -v
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