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kernel headers: Update comparison logic

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Update comparison logic used to figure out the headers
that need to be added or removed from the corresponding
blueprint file.

Change-Id: I1f8eeea9750074d57868593a9693c016644e3682
Signed-off-by: Siddharth Gupta <sidgup@codeaurora.org>
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
This commit is contained in:
Siddharth Gupta 2020-01-29 17:22:38 -08:00 committed by Rishabh Bhatnagar
parent cc39738286
commit 6afa65c2a0
1 changed files with 46 additions and 2 deletions
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48
kernel_headers.py
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@ -683,6 +683,50 @@ def gen_blueprints(
return 0
def parse_bp_for_headers(file_name, headers):
parsing_headers = False
pattern = re.compile("gen_headers_[a-zA-Z0-9]+\s*=\s*\[\s*")
with open(file_name, 'r') as f:
for line in f:
line = line.strip()
if pattern.match(line):
parsing_headers = True
continue
if line.find("]") != -1 and parsing_headers:
break
if not parsing_headers:
continue
if line.find("//") == 0:
continue
headers.add(line[1:-2])
def headers_diff(old_file, new_file):
old_headers = set()
new_headers = set()
diff_detected = False
parse_bp_for_headers(old_file, old_headers)
parse_bp_for_headers(new_file, new_headers)
diff = old_headers - new_headers
if len(diff):
diff_detected = True
print("Headers to remove:")
for x in diff:
print("\t{}".format(x))
diff = new_headers - old_headers
if len(diff):
diff_detected = True
print("Headers to add:")
for x in diff:
print("\t{}".format(x))
return diff_detected
def gen_headers(
verbose, header_arch, gen_dir, arch_asm_kbuild, asm_generic_kbuild, module_dir,
@ -715,9 +759,9 @@ def gen_headers(
The number of errors encountered.
"""
if not filecmp.cmp(old_gen_headers_bp, new_gen_headers_bp):
if headers_diff(old_gen_headers_bp, new_gen_headers_bp):
print('error: gen_headers blueprints file is out of date, suggested fix:')
print('cp %s %s' % (new_gen_headers_bp, old_gen_headers_bp))
print('#######Please add or remove the above mentioned headers from %s' % (old_gen_headers_bp))
print('then re-run the build')
return 1