Re: [PATCH v2 0/4] fpga: reorganize to subdirs

From: Tom Rix
Date: Wed Jun 09 2021 - 14:52:57 EST



On 6/9/21 10:13 AM, Greg KH wrote:
On Wed, Jun 09, 2021 at 09:50:39AM -0700, Tom Rix wrote:
On 6/9/21 9:38 AM, Greg KH wrote:
On Wed, Jun 09, 2021 at 08:08:06AM -0700, Tom Rix wrote:
On 6/9/21 7:53 AM, Greg KH wrote:
On Wed, Jun 09, 2021 at 07:22:03AM -0700, trix@xxxxxxxxxx wrote:
From: Tom Rix <trix@xxxxxxxxxx>

The incoming xrt patchset has a toplevel subdir xrt/
The current fpga/ uses a single dir with filename prefixes to subdivide owners
For consistency, there should be only one way to organize the fpga/ dir.
Because the subdir model scales better, refactor to use it.
The discussion wrt xrt is here:
https://lore.kernel.org/linux-fpga/68e85a4f-4a10-1ff9-0443-aa565878c855@xxxxxxxxxx/

Follow drivers/net/ethernet/ which has control configs
NET_VENDOR_BLA that map to drivers/net/ethernet/bla
Since fpgas do not have many vendors, drop the 'VENDOR' and use
FPGA_BLA.

There are several new subdirs
altera/
dfl/
lattice/
xilinx/

Each subdir has a Kconfig that has a new/reused

if FPGA_BLA
... existing configs ...
endif FPGA_BLA

Which is sourced into the main fpga/Kconfig

Each subdir has a Makefile whose transversal is controlled in the
fpga/Makefile by

obj-$(CONFIG_FPGA_BLA) += bla/

Some cleanup to arrange thing alphabetically and make fpga/Makefile's
whitespace look more like net/'s

Changes from
v1
Drop renaming files
Cleanup makefiles
You can rename the files, you just can not rename the .ko objects
without everyone knowing what you are doing and you trying to bury it in
the middle of a differently described patch.

If you want to do that, do you? I don't really understand why you want
to move things around right now other than "we have 40 files in one
directory, ick!".
I am trying to resolve the layout inconsistency between what we have and
what the xrt patchset does.
Why does it matter? New stuff can be added to a new dir, why worry
about old stuff? What does it hurt?

The big issue is the files vs dirs.

Over specified filenames is secondary, so I dropped them.

40 files in one dir is itself not a problem.

having 40 files and an xrt/ is.
Why is that a "problem"?

fpga/ layout should be consistent so the Makefile and Kconfig are easier to
maintain.
Is it somehow hard to maintain today? Seems pretty trivial to me...
This change was to help move xrt along.

If you are fine with xrt/, I will drop this patchset.
Who has objected to xrt/ being the only new subdirectory?

Maybe just me, but it has been mostly me doing the review.

all of my easy comments have been nearly resolved.

now I am looking at bigger issues like this, should subdev's move out of fpga/ etc.


My main complaints here are:
- these patches were not tested
- you renamed kernel modules "accidentally"
- you forgot SPDX lines
- lack of description of why these files being moved was
necessary in the changelog where you moved the files

Remember, patch 0/X never shows up in changelogs...

I will respin and collapse the patches to a single patch with a better commit log.

They aren't really useful except as a full change.

Testing will be done for dfl.

Tom


You can do better :)

greg k-h