1#!/usr/bin/env python2 2# 3# Author: Masahiro Yamada <yamada.masahiro@socionext.com> 4# 5# SPDX-License-Identifier: GPL-2.0+ 6# 7 8""" 9Move config options from headers to defconfig files. 10 11Since Kconfig was introduced to U-Boot, we have worked on moving 12config options from headers to Kconfig (defconfig). 13 14This tool intends to help this tremendous work. 15 16 17Usage 18----- 19 20First, you must edit the Kconfig to add the menu entries for the configs 21you are moving. 22 23And then run this tool giving CONFIG names you want to move. 24For example, if you want to move CONFIG_CMD_USB and CONFIG_SYS_TEXT_BASE, 25simply type as follows: 26 27 $ tools/moveconfig.py CONFIG_CMD_USB CONFIG_SYS_TEXT_BASE 28 29The tool walks through all the defconfig files and move the given CONFIGs. 30 31The log is also displayed on the terminal. 32 33The log is printed for each defconfig as follows: 34 35<defconfig_name> 36 <action1> 37 <action2> 38 <action3> 39 ... 40 41<defconfig_name> is the name of the defconfig. 42 43<action*> shows what the tool did for that defconfig. 44It looks like one of the followings: 45 46 - Move 'CONFIG_... ' 47 This config option was moved to the defconfig 48 49 - CONFIG_... is not defined in Kconfig. Do nothing. 50 The entry for this CONFIG was not found in Kconfig. 51 There are two common cases: 52 - You forgot to create an entry for the CONFIG before running 53 this tool, or made a typo in a CONFIG passed to this tool. 54 - The entry was hidden due to unmet 'depends on'. 55 This is correct behavior. 56 57 - 'CONFIG_...' is the same as the define in Kconfig. Do nothing. 58 The define in the config header matched the one in Kconfig. 59 We do not need to touch it. 60 61 - Undefined. Do nothing. 62 This config option was not found in the config header. 63 Nothing to do. 64 65 - Compiler is missing. Do nothing. 66 The compiler specified for this architecture was not found 67 in your PATH environment. 68 (If -e option is passed, the tool exits immediately.) 69 70 - Failed to process. 71 An error occurred during processing this defconfig. Skipped. 72 (If -e option is passed, the tool exits immediately on error.) 73 74Finally, you will be asked, Clean up headers? [y/n]: 75 76If you say 'y' here, the unnecessary config defines are removed 77from the config headers (include/configs/*.h). 78It just uses the regex method, so you should not rely on it. 79Just in case, please do 'git diff' to see what happened. 80 81 82How does it work? 83----------------- 84 85This tool runs configuration and builds include/autoconf.mk for every 86defconfig. The config options defined in Kconfig appear in the .config 87file (unless they are hidden because of unmet dependency.) 88On the other hand, the config options defined by board headers are seen 89in include/autoconf.mk. The tool looks for the specified options in both 90of them to decide the appropriate action for the options. If the given 91config option is found in the .config, but its value does not match the 92one from the board header, the config option in the .config is replaced 93with the define in the board header. Then, the .config is synced by 94"make savedefconfig" and the defconfig is updated with it. 95 96For faster processing, this tool handles multi-threading. It creates 97separate build directories where the out-of-tree build is run. The 98temporary build directories are automatically created and deleted as 99needed. The number of threads are chosen based on the number of the CPU 100cores of your system although you can change it via -j (--jobs) option. 101 102 103Toolchains 104---------- 105 106Appropriate toolchain are necessary to generate include/autoconf.mk 107for all the architectures supported by U-Boot. Most of them are available 108at the kernel.org site, some are not provided by kernel.org. 109 110The default per-arch CROSS_COMPILE used by this tool is specified by 111the list below, CROSS_COMPILE. You may wish to update the list to 112use your own. Instead of modifying the list directly, you can give 113them via environments. 114 115 116Available options 117----------------- 118 119 -c, --color 120 Surround each portion of the log with escape sequences to display it 121 in color on the terminal. 122 123 -d, --defconfigs 124 Specify a file containing a list of defconfigs to move 125 126 -n, --dry-run 127 Perform a trial run that does not make any changes. It is useful to 128 see what is going to happen before one actually runs it. 129 130 -e, --exit-on-error 131 Exit immediately if Make exits with a non-zero status while processing 132 a defconfig file. 133 134 -s, --force-sync 135 Do "make savedefconfig" forcibly for all the defconfig files. 136 If not specified, "make savedefconfig" only occurs for cases 137 where at least one CONFIG was moved. 138 139 -H, --headers-only 140 Only cleanup the headers; skip the defconfig processing 141 142 -j, --jobs 143 Specify the number of threads to run simultaneously. If not specified, 144 the number of threads is the same as the number of CPU cores. 145 146 -r, --git-ref 147 Specify the git ref to clone for building the autoconf.mk. If unspecified 148 use the CWD. This is useful for when changes to the Kconfig affect the 149 default values and you want to capture the state of the defconfig from 150 before that change was in effect. If in doubt, specify a ref pre-Kconfig 151 changes (use HEAD if Kconfig changes are not committed). Worst case it will 152 take a bit longer to run, but will always do the right thing. 153 154 -v, --verbose 155 Show any build errors as boards are built 156 157To see the complete list of supported options, run 158 159 $ tools/moveconfig.py -h 160 161""" 162 163import filecmp 164import fnmatch 165import multiprocessing 166import optparse 167import os 168import re 169import shutil 170import subprocess 171import sys 172import tempfile 173import time 174 175SHOW_GNU_MAKE = 'scripts/show-gnu-make' 176SLEEP_TIME=0.03 177 178# Here is the list of cross-tools I use. 179# Most of them are available at kernel.org 180# (https://www.kernel.org/pub/tools/crosstool/files/bin/), except the followings: 181# arc: https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases 182# blackfin: http://sourceforge.net/projects/adi-toolchain/files/ 183# nds32: http://osdk.andestech.com/packages/nds32le-linux-glibc-v1.tgz 184# nios2: https://sourcery.mentor.com/GNUToolchain/subscription42545 185# sh: http://sourcery.mentor.com/public/gnu_toolchain/sh-linux-gnu 186# 187# openrisc kernel.org toolchain is out of date, download latest one from 188# http://opencores.org/or1k/OpenRISC_GNU_tool_chain#Prebuilt_versions 189CROSS_COMPILE = { 190 'arc': 'arc-linux-', 191 'aarch64': 'aarch64-linux-', 192 'arm': 'arm-unknown-linux-gnueabi-', 193 'avr32': 'avr32-linux-', 194 'blackfin': 'bfin-elf-', 195 'm68k': 'm68k-linux-', 196 'microblaze': 'microblaze-linux-', 197 'mips': 'mips-linux-', 198 'nds32': 'nds32le-linux-', 199 'nios2': 'nios2-linux-gnu-', 200 'openrisc': 'or1k-elf-', 201 'powerpc': 'powerpc-linux-', 202 'sh': 'sh-linux-gnu-', 203 'sparc': 'sparc-linux-', 204 'x86': 'i386-linux-' 205} 206 207STATE_IDLE = 0 208STATE_DEFCONFIG = 1 209STATE_AUTOCONF = 2 210STATE_SAVEDEFCONFIG = 3 211 212ACTION_MOVE = 0 213ACTION_NO_ENTRY = 1 214ACTION_NO_CHANGE = 2 215 216COLOR_BLACK = '0;30' 217COLOR_RED = '0;31' 218COLOR_GREEN = '0;32' 219COLOR_BROWN = '0;33' 220COLOR_BLUE = '0;34' 221COLOR_PURPLE = '0;35' 222COLOR_CYAN = '0;36' 223COLOR_LIGHT_GRAY = '0;37' 224COLOR_DARK_GRAY = '1;30' 225COLOR_LIGHT_RED = '1;31' 226COLOR_LIGHT_GREEN = '1;32' 227COLOR_YELLOW = '1;33' 228COLOR_LIGHT_BLUE = '1;34' 229COLOR_LIGHT_PURPLE = '1;35' 230COLOR_LIGHT_CYAN = '1;36' 231COLOR_WHITE = '1;37' 232 233### helper functions ### 234def get_devnull(): 235 """Get the file object of '/dev/null' device.""" 236 try: 237 devnull = subprocess.DEVNULL # py3k 238 except AttributeError: 239 devnull = open(os.devnull, 'wb') 240 return devnull 241 242def check_top_directory(): 243 """Exit if we are not at the top of source directory.""" 244 for f in ('README', 'Licenses'): 245 if not os.path.exists(f): 246 sys.exit('Please run at the top of source directory.') 247 248def check_clean_directory(): 249 """Exit if the source tree is not clean.""" 250 for f in ('.config', 'include/config'): 251 if os.path.exists(f): 252 sys.exit("source tree is not clean, please run 'make mrproper'") 253 254def get_make_cmd(): 255 """Get the command name of GNU Make. 256 257 U-Boot needs GNU Make for building, but the command name is not 258 necessarily "make". (for example, "gmake" on FreeBSD). 259 Returns the most appropriate command name on your system. 260 """ 261 process = subprocess.Popen([SHOW_GNU_MAKE], stdout=subprocess.PIPE) 262 ret = process.communicate() 263 if process.returncode: 264 sys.exit('GNU Make not found') 265 return ret[0].rstrip() 266 267def color_text(color_enabled, color, string): 268 """Return colored string.""" 269 if color_enabled: 270 # LF should not be surrounded by the escape sequence. 271 # Otherwise, additional whitespace or line-feed might be printed. 272 return '\n'.join([ '\033[' + color + 'm' + s + '\033[0m' if s else '' 273 for s in string.split('\n') ]) 274 else: 275 return string 276 277def update_cross_compile(color_enabled): 278 """Update per-arch CROSS_COMPILE via environment variables 279 280 The default CROSS_COMPILE values are available 281 in the CROSS_COMPILE list above. 282 283 You can override them via environment variables 284 CROSS_COMPILE_{ARCH}. 285 286 For example, if you want to override toolchain prefixes 287 for ARM and PowerPC, you can do as follows in your shell: 288 289 export CROSS_COMPILE_ARM=... 290 export CROSS_COMPILE_POWERPC=... 291 292 Then, this function checks if specified compilers really exist in your 293 PATH environment. 294 """ 295 archs = [] 296 297 for arch in os.listdir('arch'): 298 if os.path.exists(os.path.join('arch', arch, 'Makefile')): 299 archs.append(arch) 300 301 # arm64 is a special case 302 archs.append('aarch64') 303 304 for arch in archs: 305 env = 'CROSS_COMPILE_' + arch.upper() 306 cross_compile = os.environ.get(env) 307 if not cross_compile: 308 cross_compile = CROSS_COMPILE.get(arch, '') 309 310 for path in os.environ["PATH"].split(os.pathsep): 311 gcc_path = os.path.join(path, cross_compile + 'gcc') 312 if os.path.isfile(gcc_path) and os.access(gcc_path, os.X_OK): 313 break 314 else: 315 print >> sys.stderr, color_text(color_enabled, COLOR_YELLOW, 316 'warning: %sgcc: not found in PATH. %s architecture boards will be skipped' 317 % (cross_compile, arch)) 318 cross_compile = None 319 320 CROSS_COMPILE[arch] = cross_compile 321 322def cleanup_one_header(header_path, patterns, dry_run): 323 """Clean regex-matched lines away from a file. 324 325 Arguments: 326 header_path: path to the cleaned file. 327 patterns: list of regex patterns. Any lines matching to these 328 patterns are deleted. 329 dry_run: make no changes, but still display log. 330 """ 331 with open(header_path) as f: 332 lines = f.readlines() 333 334 matched = [] 335 for i, line in enumerate(lines): 336 for pattern in patterns: 337 m = pattern.search(line) 338 if m: 339 print '%s: %s: %s' % (header_path, i + 1, line), 340 matched.append(i) 341 break 342 343 if dry_run or not matched: 344 return 345 346 with open(header_path, 'w') as f: 347 for i, line in enumerate(lines): 348 if not i in matched: 349 f.write(line) 350 351def cleanup_headers(configs, dry_run): 352 """Delete config defines from board headers. 353 354 Arguments: 355 configs: A list of CONFIGs to remove. 356 dry_run: make no changes, but still display log. 357 """ 358 while True: 359 choice = raw_input('Clean up headers? [y/n]: ').lower() 360 print choice 361 if choice == 'y' or choice == 'n': 362 break 363 364 if choice == 'n': 365 return 366 367 patterns = [] 368 for config in configs: 369 patterns.append(re.compile(r'#\s*define\s+%s\W' % config)) 370 patterns.append(re.compile(r'#\s*undef\s+%s\W' % config)) 371 372 for dir in 'include', 'arch', 'board': 373 for (dirpath, dirnames, filenames) in os.walk(dir): 374 for filename in filenames: 375 if not fnmatch.fnmatch(filename, '*~'): 376 cleanup_one_header(os.path.join(dirpath, filename), 377 patterns, dry_run) 378 379### classes ### 380class Progress: 381 382 """Progress Indicator""" 383 384 def __init__(self, total): 385 """Create a new progress indicator. 386 387 Arguments: 388 total: A number of defconfig files to process. 389 """ 390 self.current = 0 391 self.total = total 392 393 def inc(self): 394 """Increment the number of processed defconfig files.""" 395 396 self.current += 1 397 398 def show(self): 399 """Display the progress.""" 400 print ' %d defconfigs out of %d\r' % (self.current, self.total), 401 sys.stdout.flush() 402 403class KconfigParser: 404 405 """A parser of .config and include/autoconf.mk.""" 406 407 re_arch = re.compile(r'CONFIG_SYS_ARCH="(.*)"') 408 re_cpu = re.compile(r'CONFIG_SYS_CPU="(.*)"') 409 410 def __init__(self, configs, options, build_dir): 411 """Create a new parser. 412 413 Arguments: 414 configs: A list of CONFIGs to move. 415 options: option flags. 416 build_dir: Build directory. 417 """ 418 self.configs = configs 419 self.options = options 420 self.dotconfig = os.path.join(build_dir, '.config') 421 self.autoconf = os.path.join(build_dir, 'include', 'autoconf.mk') 422 self.config_autoconf = os.path.join(build_dir, 'include', 'config', 423 'auto.conf') 424 self.defconfig = os.path.join(build_dir, 'defconfig') 425 426 def get_cross_compile(self): 427 """Parse .config file and return CROSS_COMPILE. 428 429 Returns: 430 A string storing the compiler prefix for the architecture. 431 Return a NULL string for architectures that do not require 432 compiler prefix (Sandbox and native build is the case). 433 Return None if the specified compiler is missing in your PATH. 434 Caller should distinguish '' and None. 435 """ 436 arch = '' 437 cpu = '' 438 for line in open(self.dotconfig): 439 m = self.re_arch.match(line) 440 if m: 441 arch = m.group(1) 442 continue 443 m = self.re_cpu.match(line) 444 if m: 445 cpu = m.group(1) 446 447 if not arch: 448 return None 449 450 # fix-up for aarch64 451 if arch == 'arm' and cpu == 'armv8': 452 arch = 'aarch64' 453 454 return CROSS_COMPILE.get(arch, None) 455 456 def parse_one_config(self, config, dotconfig_lines, autoconf_lines): 457 """Parse .config, defconfig, include/autoconf.mk for one config. 458 459 This function looks for the config options in the lines from 460 defconfig, .config, and include/autoconf.mk in order to decide 461 which action should be taken for this defconfig. 462 463 Arguments: 464 config: CONFIG name to parse. 465 dotconfig_lines: lines from the .config file. 466 autoconf_lines: lines from the include/autoconf.mk file. 467 468 Returns: 469 A tupple of the action for this defconfig and the line 470 matched for the config. 471 """ 472 not_set = '# %s is not set' % config 473 474 for line in dotconfig_lines: 475 line = line.rstrip() 476 if line.startswith(config + '=') or line == not_set: 477 old_val = line 478 break 479 else: 480 return (ACTION_NO_ENTRY, config) 481 482 for line in autoconf_lines: 483 line = line.rstrip() 484 if line.startswith(config + '='): 485 new_val = line 486 break 487 else: 488 new_val = not_set 489 490 # If this CONFIG is neither bool nor trisate 491 if old_val[-2:] != '=y' and old_val[-2:] != '=m' and old_val != not_set: 492 # tools/scripts/define2mk.sed changes '1' to 'y'. 493 # This is a problem if the CONFIG is int type. 494 # Check the type in Kconfig and handle it correctly. 495 if new_val[-2:] == '=y': 496 new_val = new_val[:-1] + '1' 497 498 return (ACTION_NO_CHANGE if old_val == new_val else ACTION_MOVE, 499 new_val) 500 501 def update_dotconfig(self): 502 """Parse files for the config options and update the .config. 503 504 This function parses the generated .config and include/autoconf.mk 505 searching the target options. 506 Move the config option(s) to the .config as needed. 507 508 Arguments: 509 defconfig: defconfig name. 510 511 Returns: 512 Return a tuple of (updated flag, log string). 513 The "updated flag" is True if the .config was updated, False 514 otherwise. The "log string" shows what happend to the .config. 515 """ 516 517 results = [] 518 updated = False 519 520 with open(self.dotconfig) as f: 521 dotconfig_lines = f.readlines() 522 523 with open(self.autoconf) as f: 524 autoconf_lines = f.readlines() 525 526 for config in self.configs: 527 result = self.parse_one_config(config, dotconfig_lines, 528 autoconf_lines) 529 results.append(result) 530 531 log = '' 532 533 for (action, value) in results: 534 if action == ACTION_MOVE: 535 actlog = "Move '%s'" % value 536 log_color = COLOR_LIGHT_GREEN 537 elif action == ACTION_NO_ENTRY: 538 actlog = "%s is not defined in Kconfig. Do nothing." % value 539 log_color = COLOR_LIGHT_BLUE 540 elif action == ACTION_NO_CHANGE: 541 actlog = "'%s' is the same as the define in Kconfig. Do nothing." \ 542 % value 543 log_color = COLOR_LIGHT_PURPLE 544 else: 545 sys.exit("Internal Error. This should not happen.") 546 547 log += color_text(self.options.color, log_color, actlog) + '\n' 548 549 with open(self.dotconfig, 'a') as f: 550 for (action, value) in results: 551 if action == ACTION_MOVE: 552 f.write(value + '\n') 553 updated = True 554 555 self.results = results 556 os.remove(self.config_autoconf) 557 os.remove(self.autoconf) 558 559 return (updated, log) 560 561 def check_defconfig(self): 562 """Check the defconfig after savedefconfig 563 564 Returns: 565 Return additional log if moved CONFIGs were removed again by 566 'make savedefconfig'. 567 """ 568 569 log = '' 570 571 with open(self.defconfig) as f: 572 defconfig_lines = f.readlines() 573 574 for (action, value) in self.results: 575 if action != ACTION_MOVE: 576 continue 577 if not value + '\n' in defconfig_lines: 578 log += color_text(self.options.color, COLOR_YELLOW, 579 "'%s' was removed by savedefconfig.\n" % 580 value) 581 582 return log 583 584class Slot: 585 586 """A slot to store a subprocess. 587 588 Each instance of this class handles one subprocess. 589 This class is useful to control multiple threads 590 for faster processing. 591 """ 592 593 def __init__(self, configs, options, progress, devnull, make_cmd, reference_src_dir): 594 """Create a new process slot. 595 596 Arguments: 597 configs: A list of CONFIGs to move. 598 options: option flags. 599 progress: A progress indicator. 600 devnull: A file object of '/dev/null'. 601 make_cmd: command name of GNU Make. 602 reference_src_dir: Determine the true starting config state from this 603 source tree. 604 """ 605 self.options = options 606 self.progress = progress 607 self.build_dir = tempfile.mkdtemp() 608 self.devnull = devnull 609 self.make_cmd = (make_cmd, 'O=' + self.build_dir) 610 self.reference_src_dir = reference_src_dir 611 self.parser = KconfigParser(configs, options, self.build_dir) 612 self.state = STATE_IDLE 613 self.failed_boards = [] 614 615 def __del__(self): 616 """Delete the working directory 617 618 This function makes sure the temporary directory is cleaned away 619 even if Python suddenly dies due to error. It should be done in here 620 because it is guaranteed the destructor is always invoked when the 621 instance of the class gets unreferenced. 622 623 If the subprocess is still running, wait until it finishes. 624 """ 625 if self.state != STATE_IDLE: 626 while self.ps.poll() == None: 627 pass 628 shutil.rmtree(self.build_dir) 629 630 def add(self, defconfig): 631 """Assign a new subprocess for defconfig and add it to the slot. 632 633 If the slot is vacant, create a new subprocess for processing the 634 given defconfig and add it to the slot. Just returns False if 635 the slot is occupied (i.e. the current subprocess is still running). 636 637 Arguments: 638 defconfig: defconfig name. 639 640 Returns: 641 Return True on success or False on failure 642 """ 643 if self.state != STATE_IDLE: 644 return False 645 646 self.defconfig = defconfig 647 self.log = '' 648 self.current_src_dir = self.reference_src_dir 649 self.do_defconfig() 650 return True 651 652 def poll(self): 653 """Check the status of the subprocess and handle it as needed. 654 655 Returns True if the slot is vacant (i.e. in idle state). 656 If the configuration is successfully finished, assign a new 657 subprocess to build include/autoconf.mk. 658 If include/autoconf.mk is generated, invoke the parser to 659 parse the .config and the include/autoconf.mk, moving 660 config options to the .config as needed. 661 If the .config was updated, run "make savedefconfig" to sync 662 it, update the original defconfig, and then set the slot back 663 to the idle state. 664 665 Returns: 666 Return True if the subprocess is terminated, False otherwise 667 """ 668 if self.state == STATE_IDLE: 669 return True 670 671 if self.ps.poll() == None: 672 return False 673 674 if self.ps.poll() != 0: 675 self.handle_error() 676 elif self.state == STATE_DEFCONFIG: 677 if self.reference_src_dir and not self.current_src_dir: 678 self.do_savedefconfig() 679 else: 680 self.do_autoconf() 681 elif self.state == STATE_AUTOCONF: 682 if self.current_src_dir: 683 self.current_src_dir = None 684 self.do_defconfig() 685 else: 686 self.do_savedefconfig() 687 elif self.state == STATE_SAVEDEFCONFIG: 688 self.update_defconfig() 689 else: 690 sys.exit("Internal Error. This should not happen.") 691 692 return True if self.state == STATE_IDLE else False 693 694 def handle_error(self): 695 """Handle error cases.""" 696 697 self.log += color_text(self.options.color, COLOR_LIGHT_RED, 698 "Failed to process.\n") 699 if self.options.verbose: 700 self.log += color_text(self.options.color, COLOR_LIGHT_CYAN, 701 self.ps.stderr.read()) 702 self.finish(False) 703 704 def do_defconfig(self): 705 """Run 'make <board>_defconfig' to create the .config file.""" 706 707 cmd = list(self.make_cmd) 708 cmd.append(self.defconfig) 709 self.ps = subprocess.Popen(cmd, stdout=self.devnull, 710 stderr=subprocess.PIPE, 711 cwd=self.current_src_dir) 712 self.state = STATE_DEFCONFIG 713 714 def do_autoconf(self): 715 """Run 'make include/config/auto.conf'.""" 716 717 self.cross_compile = self.parser.get_cross_compile() 718 if self.cross_compile is None: 719 self.log += color_text(self.options.color, COLOR_YELLOW, 720 "Compiler is missing. Do nothing.\n") 721 self.finish(False) 722 return 723 724 cmd = list(self.make_cmd) 725 if self.cross_compile: 726 cmd.append('CROSS_COMPILE=%s' % self.cross_compile) 727 cmd.append('KCONFIG_IGNORE_DUPLICATES=1') 728 cmd.append('include/config/auto.conf') 729 self.ps = subprocess.Popen(cmd, stdout=self.devnull, 730 stderr=subprocess.PIPE, 731 cwd=self.current_src_dir) 732 self.state = STATE_AUTOCONF 733 734 def do_savedefconfig(self): 735 """Update the .config and run 'make savedefconfig'.""" 736 737 (updated, log) = self.parser.update_dotconfig() 738 self.log += log 739 740 if not self.options.force_sync and not updated: 741 self.finish(True) 742 return 743 if updated: 744 self.log += color_text(self.options.color, COLOR_LIGHT_GREEN, 745 "Syncing by savedefconfig...\n") 746 else: 747 self.log += "Syncing by savedefconfig (forced by option)...\n" 748 749 cmd = list(self.make_cmd) 750 cmd.append('savedefconfig') 751 self.ps = subprocess.Popen(cmd, stdout=self.devnull, 752 stderr=subprocess.PIPE) 753 self.state = STATE_SAVEDEFCONFIG 754 755 def update_defconfig(self): 756 """Update the input defconfig and go back to the idle state.""" 757 758 self.log += self.parser.check_defconfig() 759 orig_defconfig = os.path.join('configs', self.defconfig) 760 new_defconfig = os.path.join(self.build_dir, 'defconfig') 761 updated = not filecmp.cmp(orig_defconfig, new_defconfig) 762 763 if updated: 764 self.log += color_text(self.options.color, COLOR_LIGHT_BLUE, 765 "defconfig was updated.\n") 766 767 if not self.options.dry_run and updated: 768 shutil.move(new_defconfig, orig_defconfig) 769 self.finish(True) 770 771 def finish(self, success): 772 """Display log along with progress and go to the idle state. 773 774 Arguments: 775 success: Should be True when the defconfig was processed 776 successfully, or False when it fails. 777 """ 778 # output at least 30 characters to hide the "* defconfigs out of *". 779 log = self.defconfig.ljust(30) + '\n' 780 781 log += '\n'.join([ ' ' + s for s in self.log.split('\n') ]) 782 # Some threads are running in parallel. 783 # Print log atomically to not mix up logs from different threads. 784 print >> (sys.stdout if success else sys.stderr), log 785 786 if not success: 787 if self.options.exit_on_error: 788 sys.exit("Exit on error.") 789 # If --exit-on-error flag is not set, skip this board and continue. 790 # Record the failed board. 791 self.failed_boards.append(self.defconfig) 792 793 self.progress.inc() 794 self.progress.show() 795 self.state = STATE_IDLE 796 797 def get_failed_boards(self): 798 """Returns a list of failed boards (defconfigs) in this slot. 799 """ 800 return self.failed_boards 801 802class Slots: 803 804 """Controller of the array of subprocess slots.""" 805 806 def __init__(self, configs, options, progress, reference_src_dir): 807 """Create a new slots controller. 808 809 Arguments: 810 configs: A list of CONFIGs to move. 811 options: option flags. 812 progress: A progress indicator. 813 reference_src_dir: Determine the true starting config state from this 814 source tree. 815 """ 816 self.options = options 817 self.slots = [] 818 devnull = get_devnull() 819 make_cmd = get_make_cmd() 820 for i in range(options.jobs): 821 self.slots.append(Slot(configs, options, progress, devnull, 822 make_cmd, reference_src_dir)) 823 824 def add(self, defconfig): 825 """Add a new subprocess if a vacant slot is found. 826 827 Arguments: 828 defconfig: defconfig name to be put into. 829 830 Returns: 831 Return True on success or False on failure 832 """ 833 for slot in self.slots: 834 if slot.add(defconfig): 835 return True 836 return False 837 838 def available(self): 839 """Check if there is a vacant slot. 840 841 Returns: 842 Return True if at lease one vacant slot is found, False otherwise. 843 """ 844 for slot in self.slots: 845 if slot.poll(): 846 return True 847 return False 848 849 def empty(self): 850 """Check if all slots are vacant. 851 852 Returns: 853 Return True if all the slots are vacant, False otherwise. 854 """ 855 ret = True 856 for slot in self.slots: 857 if not slot.poll(): 858 ret = False 859 return ret 860 861 def show_failed_boards(self): 862 """Display all of the failed boards (defconfigs).""" 863 boards = [] 864 output_file = 'moveconfig.failed' 865 866 for slot in self.slots: 867 boards += slot.get_failed_boards() 868 869 if boards: 870 boards = '\n'.join(boards) + '\n' 871 msg = "The following boards were not processed due to error:\n" 872 msg += boards 873 msg += "(the list has been saved in %s)\n" % output_file 874 print >> sys.stderr, color_text(self.options.color, COLOR_LIGHT_RED, 875 msg) 876 877 with open(output_file, 'w') as f: 878 f.write(boards) 879 880class ReferenceSource: 881 882 """Reference source against which original configs should be parsed.""" 883 884 def __init__(self, commit): 885 """Create a reference source directory based on a specified commit. 886 887 Arguments: 888 commit: commit to git-clone 889 """ 890 self.src_dir = tempfile.mkdtemp() 891 print "Cloning git repo to a separate work directory..." 892 subprocess.check_output(['git', 'clone', os.getcwd(), '.'], 893 cwd=self.src_dir) 894 print "Checkout '%s' to build the original autoconf.mk." % \ 895 subprocess.check_output(['git', 'rev-parse', '--short', commit]).strip() 896 subprocess.check_output(['git', 'checkout', commit], 897 stderr=subprocess.STDOUT, cwd=self.src_dir) 898 899 def __del__(self): 900 """Delete the reference source directory 901 902 This function makes sure the temporary directory is cleaned away 903 even if Python suddenly dies due to error. It should be done in here 904 because it is guaranteed the destructor is always invoked when the 905 instance of the class gets unreferenced. 906 """ 907 shutil.rmtree(self.src_dir) 908 909 def get_dir(self): 910 """Return the absolute path to the reference source directory.""" 911 912 return self.src_dir 913 914def move_config(configs, options): 915 """Move config options to defconfig files. 916 917 Arguments: 918 configs: A list of CONFIGs to move. 919 options: option flags 920 """ 921 if len(configs) == 0: 922 if options.force_sync: 923 print 'No CONFIG is specified. You are probably syncing defconfigs.', 924 else: 925 print 'Neither CONFIG nor --force-sync is specified. Nothing will happen.', 926 else: 927 print 'Move ' + ', '.join(configs), 928 print '(jobs: %d)\n' % options.jobs 929 930 if options.git_ref: 931 reference_src = ReferenceSource(options.git_ref) 932 reference_src_dir = reference_src.get_dir() 933 else: 934 reference_src_dir = None 935 936 if options.defconfigs: 937 defconfigs = [line.strip() for line in open(options.defconfigs)] 938 for i, defconfig in enumerate(defconfigs): 939 if not defconfig.endswith('_defconfig'): 940 defconfigs[i] = defconfig + '_defconfig' 941 if not os.path.exists(os.path.join('configs', defconfigs[i])): 942 sys.exit('%s - defconfig does not exist. Stopping.' % 943 defconfigs[i]) 944 else: 945 # All the defconfig files to be processed 946 defconfigs = [] 947 for (dirpath, dirnames, filenames) in os.walk('configs'): 948 dirpath = dirpath[len('configs') + 1:] 949 for filename in fnmatch.filter(filenames, '*_defconfig'): 950 defconfigs.append(os.path.join(dirpath, filename)) 951 952 progress = Progress(len(defconfigs)) 953 slots = Slots(configs, options, progress, reference_src_dir) 954 955 # Main loop to process defconfig files: 956 # Add a new subprocess into a vacant slot. 957 # Sleep if there is no available slot. 958 for defconfig in defconfigs: 959 while not slots.add(defconfig): 960 while not slots.available(): 961 # No available slot: sleep for a while 962 time.sleep(SLEEP_TIME) 963 964 # wait until all the subprocesses finish 965 while not slots.empty(): 966 time.sleep(SLEEP_TIME) 967 968 print '' 969 slots.show_failed_boards() 970 971def main(): 972 try: 973 cpu_count = multiprocessing.cpu_count() 974 except NotImplementedError: 975 cpu_count = 1 976 977 parser = optparse.OptionParser() 978 # Add options here 979 parser.add_option('-c', '--color', action='store_true', default=False, 980 help='display the log in color') 981 parser.add_option('-d', '--defconfigs', type='string', 982 help='a file containing a list of defconfigs to move') 983 parser.add_option('-n', '--dry-run', action='store_true', default=False, 984 help='perform a trial run (show log with no changes)') 985 parser.add_option('-e', '--exit-on-error', action='store_true', 986 default=False, 987 help='exit immediately on any error') 988 parser.add_option('-s', '--force-sync', action='store_true', default=False, 989 help='force sync by savedefconfig') 990 parser.add_option('-H', '--headers-only', dest='cleanup_headers_only', 991 action='store_true', default=False, 992 help='only cleanup the headers') 993 parser.add_option('-j', '--jobs', type='int', default=cpu_count, 994 help='the number of jobs to run simultaneously') 995 parser.add_option('-r', '--git-ref', type='string', 996 help='the git ref to clone for building the autoconf.mk') 997 parser.add_option('-v', '--verbose', action='store_true', default=False, 998 help='show any build errors as boards are built') 999 parser.usage += ' CONFIG ...' 1000 1001 (options, configs) = parser.parse_args() 1002 1003 if len(configs) == 0 and not options.force_sync: 1004 parser.print_usage() 1005 sys.exit(1) 1006 1007 # prefix the option name with CONFIG_ if missing 1008 configs = [ config if config.startswith('CONFIG_') else 'CONFIG_' + config 1009 for config in configs ] 1010 1011 check_top_directory() 1012 1013 check_clean_directory() 1014 1015 update_cross_compile(options.color) 1016 1017 if not options.cleanup_headers_only: 1018 move_config(configs, options) 1019 1020 if configs: 1021 cleanup_headers(configs, options.dry_run) 1022 1023if __name__ == '__main__': 1024 main() 1025