After the allmodconfig build, this script takes about 5 sec on my
machine. Most of the run-time is consumed for needless regex matching.
We know the format of .*.cmd file; the first line is the build command.
There is no need to parse the rest.
With this optimization, now it runs 4 times faster.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
filepath = os.path.join(dirpath, filename)
with open(filepath, 'rt') as f:
- for line in f:
- result = line_matcher.match(line)
- if not result:
- continue
-
+ result = line_matcher.match(f.readline())
+ if result:
try:
entry = process_line(directory, dirpath,
result.group(1), result.group(2))