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authorMasahiro Yamada <yamada.m@jp.panasonic.com>2014-08-25 03:39:48 (GMT)
committerTom Rini <trini@ti.com>2014-08-28 21:18:49 (GMT)
commit9a65cb7ffe434236e8cdcb57d3937cef2828f4d0 (patch)
treeab6470302d9e6c71124c1f0f4222887c52eaf08d /tools
parentd1bf4afda6d6833e428956ee0dbba9f34e644cca (diff)
downloadu-boot-9a65cb7ffe434236e8cdcb57d3937cef2828f4d0.tar.xz
tools/genboardscfg.py: improve performance
I guess some developers are already getting sick of this tool because it generally takes a few minites to generate the boards.cfg on a reasonable computer. The idea popped up on my mind was to skip Makefiles and to run script/kconfig/conf directly. This tool should become about 4 times faster. You might still not be satisfied, but better than doing nothing. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'tools')
-rwxr-xr-xtools/genboardscfg.py39
1 files changed, 33 insertions, 6 deletions
diff --git a/tools/genboardscfg.py b/tools/genboardscfg.py
index c0d7b94..13dbc63 100755
--- a/tools/genboardscfg.py
+++ b/tools/genboardscfg.py
@@ -30,7 +30,7 @@ CONFIG_DIR = 'configs'
REFORMAT_CMD = [os.path.join('tools', 'reformat.py'),
'-i', '-d', '-', '-s', '8']
SHOW_GNU_MAKE = 'scripts/show-gnu-make'
-SLEEP_TIME=0.03
+SLEEP_TIME=0.003
COMMENT_BLOCK = '''#
# List of boards
@@ -312,13 +312,20 @@ class Slot:
Arguments:
output: File object which the result is written to
maintainers_database: An instance of class MaintainersDatabase
+ devnull: file object of 'dev/null'
+ make_cmd: the command name of Make
"""
- self.occupied = False
self.build_dir = tempfile.mkdtemp()
self.devnull = devnull
- self.make_cmd = make_cmd
+ self.ps = subprocess.Popen([make_cmd, 'O=' + self.build_dir,
+ 'allnoconfig'], stdout=devnull)
+ self.occupied = True
self.parser = DotConfigParser(self.build_dir, output,
maintainers_database)
+ self.env = os.environ.copy()
+ self.env['srctree'] = os.getcwd()
+ self.env['UBOOTVERSION'] = 'dummy'
+ self.env['KCONFIG_OBJDIR'] = ''
def __del__(self):
"""Delete the working directory"""
@@ -341,13 +348,31 @@ class Slot:
"""
if self.occupied:
return False
- o = 'O=' + self.build_dir
- self.ps = subprocess.Popen([self.make_cmd, o, defconfig],
- stdout=self.devnull)
+
+ with open(os.path.join(self.build_dir, '.tmp_defconfig'), 'w') as f:
+ for line in open(os.path.join(CONFIG_DIR, defconfig)):
+ colon = line.find(':CONFIG_')
+ if colon == -1:
+ f.write(line)
+ else:
+ f.write(line[colon + 1:])
+
+ self.ps = subprocess.Popen([os.path.join('scripts', 'kconfig', 'conf'),
+ '--defconfig=.tmp_defconfig', 'Kconfig'],
+ stdout=self.devnull,
+ cwd=self.build_dir,
+ env=self.env)
+
self.defconfig = defconfig
self.occupied = True
return True
+ def wait(self):
+ """Wait until the current subprocess finishes."""
+ while self.occupied and self.ps.poll() == None:
+ time.sleep(SLEEP_TIME)
+ self.occupied = False
+
def poll(self):
"""Check if the subprocess is running and invoke the .config
parser if the subprocess is terminated.
@@ -385,6 +410,8 @@ class Slots:
for i in range(jobs):
self.slots.append(Slot(output, maintainers_database,
devnull, make_cmd))
+ for slot in self.slots:
+ slot.wait()
def add(self, defconfig):
"""Add a new subprocess if a vacant slot is available.