Re: [U-Boot] [PATCH v3] Add a simple script to remove boards

On Sun, 19 May 2019, 4:07 AM Simon Glass, sjg@chromium.org wrote:

This script attempts to create a git commit which removes a single board. It is quite fallible and everything it does needs checking. But it can help speed up the process.

Signed-off-by: Simon Glass sjg@chromium.org

Reviewed-by: Chris Packham judge.packham@gmail.com

---

Changes in v3:

• Move this into its own separate patch
• Fix typos

tools/rmboard.py | 150 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 150 insertions(+) create mode 100755 tools/rmboard.py

diff --git a/tools/rmboard.py b/tools/rmboard.py new file mode 100755 index 00000000000..df4f04b01c5 --- /dev/null +++ b/tools/rmboard.py @@ -0,0 +1,150 @@ +#! /usr/bin/python +# SPDX-License-Identifier: GPL-2.0+ +# Copyright 2019 Google LLC +#

+""" +Script to remove boards

+Usage:

• rmboard.py <board_name>...

+A single commit is created for each board removed.

+Some boards may depend on files provided by another and this will cause +problems, generally the removal of files which should not be removed.

+This script works by:

• • Looking through the MAINTAINERS files which mention a board to find

out

•    what files the board uses
  

• • Looking through the Kconfig files which mention a board to find one

that

•    needs to have material removed
  

+Search for ## to update the commit message manually. +"""

+from __future__ import print_function

+import glob +import os +import re +import sys

+# Bring in the patman libraries +our_path = os.path.dirname(os.path.realpath(__file__)) +sys.path.append(os.path.join(our_path, '../tools/patman'))

+import command

+def rm_kconfig_include(path):

• """Remove a path from Kconfig files
• This function finds the given path in a 'source' statement in a

Kconfig

• file and removes that line from the file. This is needed because the

path

• is going to be removed, so any reference to it will cause a problem

with

• Kconfig parsing.
• The changes are made locally and then added to the git staging area.
• Args:

•    path: Path to search for and remove
  

• """
• cmd = ['git', 'grep', path]
• stdout = command.RunPipe([cmd], capture=True,

raise_on_error=False).stdout

• if not stdout:

•    return
  

• fname = stdout.split(':')[0]
• print("Fixing up '%s' to remove reference to '%s'" % (fname, path))
• cmd = ['sed', '-i', '|%s|d' % path, fname]
• stdout = command.RunPipe([cmd], capture=True).stdout
• cmd = ['git', 'add', fname]
• stdout = command.RunPipe([cmd], capture=True).stdout

+def rm_board(board):

• """Create a commit which removes a single board
• This looks up the MAINTAINERS file to file files that need to be

removed,

• then removes pieces from the Kconfig files that mention the board.
• Args:

•    board: Board name to remove
  

• """
• # Find all MAINTAINERS and Kconfig files which mention the board
• cmd = ['git', 'grep', '-l', board]
• stdout = command.RunPipe([cmd], capture=True).stdout
• maintain = []
• kconfig = []
• for line in stdout.splitlines():

•    line = line.strip()
  

•    if 'MAINTAINERS' in line:
  

•        if line not in maintain:
  

•            maintain.append(line)
  

•    elif 'Kconfig' in line:
  

•        kconfig.append(line)
  

• paths = []
• cc = []
• # Look through the MAINTAINERS file to find things to remove
• for fname in maintain:

•    with open(fname) as fd:
  

•        for line in fd:
  

•            line = line.strip()
  

•            fields = re.split('[ \t]', line, 1)
  

•            if len(fields) == 2:
  

•                if fields[0] == 'M:':
  

•                    cc.append(fields[1])
  

•                elif fields[0] == 'F:':
  

•                    paths.append(fields[1].strip())
  

• # Expand any wildcards in the MAINTAINERS file
• real = []
• for path in paths:

•    if path[-1] == '/':
  

•        path = path[:-1]
  

•    if '*' in path:
  

•        globbed = glob.glob(path)
  

•        print("Expanded '%s' to '%s'" % (path, globbed))
  

•        real += globbed
  

•    else:
  

•        real.append(path)
  

• # Search for Kconfig files in the resulting list. Remove any 'source'

lines

• # which reference Kconfig files we want to remove
• for path in real:

•    cmd = ['find', path]
  

•    stdout = (command.RunPipe([cmd], capture=True,
  

raise_on_error=False).

•              stdout)
  

•    for fname in stdout.splitlines():
  

•        if fname.endswith('Kconfig'):
  

•            rm_kconfig_include(fname)
  

• # Remove unwanted files
• cmd = ['git', 'rm', '-r'] + real
• stdout = command.RunPipe([cmd], capture=True).stdout
• ## Change the messages as needed
• msg = '''arm: Remove %s board

+This board has not been converted to CONFIG_DM_MMC by the deadline. +Remove it.

+''' % board

• for name in cc:

•    msg += 'Patch-cc: %s\n' % name
  

• # Create the commit
• cmd = ['git', 'commit', '-s', '-m', msg]
• stdout = command.RunPipe([cmd], capture=True).stdout
• # Check if the board is mentioned anywhere else. The user will need

to deal

• # with this
• cmd = ['git', 'grep', '-il', board]
• print(command.RunPipe([cmd], capture=True,

raise_on_error=False).stdout)

• print(' '.join(cmd))

+for board in sys.argv[1:]:

• rm_board(board)

-- 2.21.0.1020.gf2820cf01a-goog