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1#!/usr/bin/perl -w
2#
3# Copyright 2010 - Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
4# Licensed under the terms of the GNU GPL License version 2
5#
6
7use strict;
8use IPC::Open2;
9use Fcntl qw(F_GETFL F_SETFL O_NONBLOCK);
10use File::Path qw(mkpath);
11use File::Copy qw(cp);
12use FileHandle;
13
14my $VERSION = "0.2";
15
16$| = 1;
17
18my %opt;
19my %repeat_tests;
20my %repeats;
21my %default;
22
23#default opts
24$default{"NUM_TESTS"} = 1;
25$default{"REBOOT_TYPE"} = "grub";
26$default{"TEST_TYPE"} = "test";
27$default{"BUILD_TYPE"} = "randconfig";
28$default{"MAKE_CMD"} = "make";
29$default{"TIMEOUT"} = 120;
30$default{"TMP_DIR"} = "/tmp/ktest/\${MACHINE}";
31$default{"SLEEP_TIME"} = 60; # sleep time between tests
32$default{"BUILD_NOCLEAN"} = 0;
33$default{"REBOOT_ON_ERROR"} = 0;
34$default{"POWEROFF_ON_ERROR"} = 0;
35$default{"REBOOT_ON_SUCCESS"} = 1;
36$default{"POWEROFF_ON_SUCCESS"} = 0;
37$default{"BUILD_OPTIONS"} = "";
38$default{"BISECT_SLEEP_TIME"} = 60; # sleep time between bisects
39$default{"PATCHCHECK_SLEEP_TIME"} = 60; # sleep time between patch checks
40$default{"CLEAR_LOG"} = 0;
41$default{"BISECT_MANUAL"} = 0;
42$default{"BISECT_SKIP"} = 1;
43$default{"SUCCESS_LINE"} = "login:";
44$default{"DETECT_TRIPLE_FAULT"} = 1;
45$default{"BOOTED_TIMEOUT"} = 1;
46$default{"DIE_ON_FAILURE"} = 1;
47$default{"SSH_EXEC"} = "ssh \$SSH_USER\@\$MACHINE \$SSH_COMMAND";
48$default{"SCP_TO_TARGET"} = "scp \$SRC_FILE \$SSH_USER\@\$MACHINE:\$DST_FILE";
49$default{"REBOOT"} = "ssh \$SSH_USER\@\$MACHINE reboot";
50$default{"STOP_AFTER_SUCCESS"} = 10;
51$default{"STOP_AFTER_FAILURE"} = 60;
52$default{"STOP_TEST_AFTER"} = 600;
53$default{"LOCALVERSION"} = "-test";
54
55my $ktest_config;
56my $version;
57my $machine;
58my $ssh_user;
59my $tmpdir;
60my $builddir;
61my $outputdir;
62my $output_config;
63my $test_type;
64my $build_type;
65my $build_options;
66my $pre_build;
67my $post_build;
68my $pre_build_die;
69my $post_build_die;
70my $reboot_type;
71my $reboot_script;
72my $power_cycle;
73my $reboot;
74my $reboot_on_error;
75my $poweroff_on_error;
76my $die_on_failure;
77my $powercycle_after_reboot;
78my $poweroff_after_halt;
79my $ssh_exec;
80my $scp_to_target;
81my $power_off;
82my $grub_menu;
83my $grub_number;
84my $target;
85my $make;
86my $post_install;
87my $noclean;
88my $minconfig;
89my $start_minconfig;
90my $start_minconfig_defined;
91my $output_minconfig;
92my $ignore_config;
93my $addconfig;
94my $in_bisect = 0;
95my $bisect_bad = "";
96my $reverse_bisect;
97my $bisect_manual;
98my $bisect_skip;
99my $config_bisect_good;
100my $in_patchcheck = 0;
101my $run_test;
102my $redirect;
103my $buildlog;
104my $dmesg;
105my $monitor_fp;
106my $monitor_pid;
107my $monitor_cnt = 0;
108my $sleep_time;
109my $bisect_sleep_time;
110my $patchcheck_sleep_time;
111my $ignore_warnings;
112my $store_failures;
113my $test_name;
114my $timeout;
115my $booted_timeout;
116my $detect_triplefault;
117my $console;
118my $success_line;
119my $stop_after_success;
120my $stop_after_failure;
121my $stop_test_after;
122my $build_target;
123my $target_image;
124my $localversion;
125my $iteration = 0;
126my $successes = 0;
127
128my %entered_configs;
129my %config_help;
130my %variable;
131my %force_config;
132
133$config_help{"MACHINE"} = << "EOF"
134 The machine hostname that you will test.
135EOF
136 ;
137$config_help{"SSH_USER"} = << "EOF"
138 The box is expected to have ssh on normal bootup, provide the user
139 (most likely root, since you need privileged operations)
140EOF
141 ;
142$config_help{"BUILD_DIR"} = << "EOF"
143 The directory that contains the Linux source code (full path).
144EOF
145 ;
146$config_help{"OUTPUT_DIR"} = << "EOF"
147 The directory that the objects will be built (full path).
148 (can not be same as BUILD_DIR)
149EOF
150 ;
151$config_help{"BUILD_TARGET"} = << "EOF"
152 The location of the compiled file to copy to the target.
153 (relative to OUTPUT_DIR)
154EOF
155 ;
156$config_help{"TARGET_IMAGE"} = << "EOF"
157 The place to put your image on the test machine.
158EOF
159 ;
160$config_help{"POWER_CYCLE"} = << "EOF"
161 A script or command to reboot the box.
162
163 Here is a digital loggers power switch example
164 POWER_CYCLE = wget --no-proxy -O /dev/null -q --auth-no-challenge 'http://admin:admin\@power/outlet?5=CCL'
165
166 Here is an example to reboot a virtual box on the current host
167 with the name "Guest".
168 POWER_CYCLE = virsh destroy Guest; sleep 5; virsh start Guest
169EOF
170 ;
171$config_help{"CONSOLE"} = << "EOF"
172 The script or command that reads the console
173
174 If you use ttywatch server, something like the following would work.
175CONSOLE = nc -d localhost 3001
176
177 For a virtual machine with guest name "Guest".
178CONSOLE = virsh console Guest
179EOF
180 ;
181$config_help{"LOCALVERSION"} = << "EOF"
182 Required version ending to differentiate the test
183 from other linux builds on the system.
184EOF
185 ;
186$config_help{"REBOOT_TYPE"} = << "EOF"
187 Way to reboot the box to the test kernel.
188 Only valid options so far are "grub" and "script".
189
190 If you specify grub, it will assume grub version 1
191 and will search in /boot/grub/menu.lst for the title \$GRUB_MENU
192 and select that target to reboot to the kernel. If this is not
193 your setup, then specify "script" and have a command or script
194 specified in REBOOT_SCRIPT to boot to the target.
195
196 The entry in /boot/grub/menu.lst must be entered in manually.
197 The test will not modify that file.
198EOF
199 ;
200$config_help{"GRUB_MENU"} = << "EOF"
201 The grub title name for the test kernel to boot
202 (Only mandatory if REBOOT_TYPE = grub)
203
204 Note, ktest.pl will not update the grub menu.lst, you need to
205 manually add an option for the test. ktest.pl will search
206 the grub menu.lst for this option to find what kernel to
207 reboot into.
208
209 For example, if in the /boot/grub/menu.lst the test kernel title has:
210 title Test Kernel
211 kernel vmlinuz-test
212 GRUB_MENU = Test Kernel
213EOF
214 ;
215$config_help{"REBOOT_SCRIPT"} = << "EOF"
216 A script to reboot the target into the test kernel
217 (Only mandatory if REBOOT_TYPE = script)
218EOF
219 ;
220
221sub read_yn {
222 my ($prompt) = @_;
223
224 my $ans;
225
226 for (;;) {
227 print "$prompt [Y/n] ";
228 $ans = <STDIN>;
229 chomp $ans;
230 if ($ans =~ /^\s*$/) {
231 $ans = "y";
232 }
233 last if ($ans =~ /^y$/i || $ans =~ /^n$/i);
234 print "Please answer either 'y' or 'n'.\n";
235 }
236 if ($ans !~ /^y$/i) {
237 return 0;
238 }
239 return 1;
240}
241
242sub get_ktest_config {
243 my ($config) = @_;
244
245 return if (defined($opt{$config}));
246
247 if (defined($config_help{$config})) {
248 print "\n";
249 print $config_help{$config};
250 }
251
252 for (;;) {
253 print "$config = ";
254 if (defined($default{$config})) {
255 print "\[$default{$config}\] ";
256 }
257 $entered_configs{$config} = <STDIN>;
258 $entered_configs{$config} =~ s/^\s*(.*\S)\s*$/$1/;
259 if ($entered_configs{$config} =~ /^\s*$/) {
260 if ($default{$config}) {
261 $entered_configs{$config} = $default{$config};
262 } else {
263 print "Your answer can not be blank\n";
264 next;
265 }
266 }
267 last;
268 }
269}
270
271sub get_ktest_configs {
272 get_ktest_config("MACHINE");
273 get_ktest_config("SSH_USER");
274 get_ktest_config("BUILD_DIR");
275 get_ktest_config("OUTPUT_DIR");
276 get_ktest_config("BUILD_TARGET");
277 get_ktest_config("TARGET_IMAGE");
278 get_ktest_config("POWER_CYCLE");
279 get_ktest_config("CONSOLE");
280 get_ktest_config("LOCALVERSION");
281
282 my $rtype = $opt{"REBOOT_TYPE"};
283
284 if (!defined($rtype)) {
285 if (!defined($opt{"GRUB_MENU"})) {
286 get_ktest_config("REBOOT_TYPE");
287 $rtype = $entered_configs{"REBOOT_TYPE"};
288 } else {
289 $rtype = "grub";
290 }
291 }
292
293 if ($rtype eq "grub") {
294 get_ktest_config("GRUB_MENU");
295 } else {
296 get_ktest_config("REBOOT_SCRIPT");
297 }
298}
299
300sub process_variables {
301 my ($value) = @_;
302 my $retval = "";
303
304 # We want to check for '\', and it is just easier
305 # to check the previous characet of '$' and not need
306 # to worry if '$' is the first character. By adding
307 # a space to $value, we can just check [^\\]\$ and
308 # it will still work.
309 $value = " $value";
310
311 while ($value =~ /(.*?[^\\])\$\{(.*?)\}(.*)/) {
312 my $begin = $1;
313 my $var = $2;
314 my $end = $3;
315 # append beginning of value to retval
316 $retval = "$retval$begin";
317 if (defined($variable{$var})) {
318 $retval = "$retval$variable{$var}";
319 } else {
320 # put back the origin piece.
321 $retval = "$retval\$\{$var\}";
322 }
323 $value = $end;
324 }
325 $retval = "$retval$value";
326
327 # remove the space added in the beginning
328 $retval =~ s/ //;
329
330 return "$retval"
331}
332
333sub set_value {
334 my ($lvalue, $rvalue) = @_;
335
336 if (defined($opt{$lvalue})) {
337 die "Error: Option $lvalue defined more than once!\n";
338 }
339 if ($rvalue =~ /^\s*$/) {
340 delete $opt{$lvalue};
341 } else {
342 $rvalue = process_variables($rvalue);
343 $opt{$lvalue} = $rvalue;
344 }
345}
346
347sub set_variable {
348 my ($lvalue, $rvalue) = @_;
349
350 if ($rvalue =~ /^\s*$/) {
351 delete $variable{$lvalue};
352 } else {
353 $rvalue = process_variables($rvalue);
354 $variable{$lvalue} = $rvalue;
355 }
356}
357
358sub read_config {
359 my ($config) = @_;
360
361 open(IN, $config) || die "can't read file $config";
362
363 my $name = $config;
364 $name =~ s,.*/(.*),$1,;
365
366 my $test_num = 0;
367 my $default = 1;
368 my $repeat = 1;
369 my $num_tests_set = 0;
370 my $skip = 0;
371 my $rest;
372 my $test_case = 0;
373
374 while (<IN>) {
375
376 # ignore blank lines and comments
377 next if (/^\s*$/ || /\s*\#/);
378
379 if (/^\s*TEST_START(.*)/) {
380
381 $rest = $1;
382
383 if ($num_tests_set) {
384 die "$name: $.: Can not specify both NUM_TESTS and TEST_START\n";
385 }
386
387 my $old_test_num = $test_num;
388 my $old_repeat = $repeat;
389
390 $test_num += $repeat;
391 $default = 0;
392 $repeat = 1;
393
394 if ($rest =~ /\s+SKIP(.*)/) {
395 $rest = $1;
396 $skip = 1;
397 } else {
398 $test_case = 1;
399 $skip = 0;
400 }
401
402 if ($rest =~ /\s+ITERATE\s+(\d+)(.*)$/) {
403 $repeat = $1;
404 $rest = $2;
405 $repeat_tests{"$test_num"} = $repeat;
406 }
407
408 if ($rest =~ /\s+SKIP(.*)/) {
409 $rest = $1;
410 $skip = 1;
411 }
412
413 if ($rest !~ /^\s*$/) {
414 die "$name: $.: Gargbage found after TEST_START\n$_";
415 }
416
417 if ($skip) {
418 $test_num = $old_test_num;
419 $repeat = $old_repeat;
420 }
421
422 } elsif (/^\s*DEFAULTS(.*)$/) {
423 $default = 1;
424
425 $rest = $1;
426
427 if ($rest =~ /\s+SKIP(.*)/) {
428 $rest = $1;
429 $skip = 1;
430 } else {
431 $skip = 0;
432 }
433
434 if ($rest !~ /^\s*$/) {
435 die "$name: $.: Gargbage found after DEFAULTS\n$_";
436 }
437
438 } elsif (/^\s*([A-Z_\[\]\d]+)\s*=\s*(.*?)\s*$/) {
439
440 next if ($skip);
441
442 my $lvalue = $1;
443 my $rvalue = $2;
444
445 if (!$default &&
446 ($lvalue eq "NUM_TESTS" ||
447 $lvalue eq "LOG_FILE" ||
448 $lvalue eq "CLEAR_LOG")) {
449 die "$name: $.: $lvalue must be set in DEFAULTS section\n";
450 }
451
452 if ($lvalue eq "NUM_TESTS") {
453 if ($test_num) {
454 die "$name: $.: Can not specify both NUM_TESTS and TEST_START\n";
455 }
456 if (!$default) {
457 die "$name: $.: NUM_TESTS must be set in default section\n";
458 }
459 $num_tests_set = 1;
460 }
461
462 if ($default || $lvalue =~ /\[\d+\]$/) {
463 set_value($lvalue, $rvalue);
464 } else {
465 my $val = "$lvalue\[$test_num\]";
466 set_value($val, $rvalue);
467
468 if ($repeat > 1) {
469 $repeats{$val} = $repeat;
470 }
471 }
472 } elsif (/^\s*([A-Z_\[\]\d]+)\s*:=\s*(.*?)\s*$/) {
473 next if ($skip);
474
475 my $lvalue = $1;
476 my $rvalue = $2;
477
478 # process config variables.
479 # Config variables are only active while reading the
480 # config and can be defined anywhere. They also ignore
481 # TEST_START and DEFAULTS, but are skipped if they are in
482 # on of these sections that have SKIP defined.
483 # The save variable can be
484 # defined multiple times and the new one simply overrides
485 # the prevous one.
486 set_variable($lvalue, $rvalue);
487
488 } else {
489 die "$name: $.: Garbage found in config\n$_";
490 }
491 }
492
493 close(IN);
494
495 if ($test_num) {
496 $test_num += $repeat - 1;
497 $opt{"NUM_TESTS"} = $test_num;
498 }
499
500 # make sure we have all mandatory configs
501 get_ktest_configs;
502
503 # was a test specified?
504 if (!$test_case) {
505 print "No test case specified.\n";
506 print "What test case would you like to run?\n";
507 my $ans = <STDIN>;
508 chomp $ans;
509 $default{"TEST_TYPE"} = $ans;
510 }
511
512 # set any defaults
513
514 foreach my $default (keys %default) {
515 if (!defined($opt{$default})) {
516 $opt{$default} = $default{$default};
517 }
518 }
519}
520
521sub __eval_option {
522 my ($option, $i) = @_;
523
524 # Add space to evaluate the character before $
525 $option = " $option";
526 my $retval = "";
527
528 while ($option =~ /(.*?[^\\])\$\{(.*?)\}(.*)/) {
529 my $start = $1;
530 my $var = $2;
531 my $end = $3;
532
533 # Append beginning of line
534 $retval = "$retval$start";
535
536 # If the iteration option OPT[$i] exists, then use that.
537 # otherwise see if the default OPT (without [$i]) exists.
538
539 my $o = "$var\[$i\]";
540
541 if (defined($opt{$o})) {
542 $o = $opt{$o};
543 $retval = "$retval$o";
544 } elsif (defined($opt{$var})) {
545 $o = $opt{$var};
546 $retval = "$retval$o";
547 } else {
548 $retval = "$retval\$\{$var\}";
549 }
550
551 $option = $end;
552 }
553
554 $retval = "$retval$option";
555
556 $retval =~ s/^ //;
557
558 return $retval;
559}
560
561sub eval_option {
562 my ($option, $i) = @_;
563
564 my $prev = "";
565
566 # Since an option can evaluate to another option,
567 # keep iterating until we do not evaluate any more
568 # options.
569 my $r = 0;
570 while ($prev ne $option) {
571 # Check for recursive evaluations.
572 # 100 deep should be more than enough.
573 if ($r++ > 100) {
574 die "Over 100 evaluations accurred with $option\n" .
575 "Check for recursive variables\n";
576 }
577 $prev = $option;
578 $option = __eval_option($option, $i);
579 }
580
581 return $option;
582}
583
584sub _logit {
585 if (defined($opt{"LOG_FILE"})) {
586 open(OUT, ">> $opt{LOG_FILE}") or die "Can't write to $opt{LOG_FILE}";
587 print OUT @_;
588 close(OUT);
589 }
590}
591
592sub logit {
593 if (defined($opt{"LOG_FILE"})) {
594 _logit @_;
595 } else {
596 print @_;
597 }
598}
599
600sub doprint {
601 print @_;
602 _logit @_;
603}
604
605sub run_command;
606
607sub reboot {
608 # try to reboot normally
609 if (run_command $reboot) {
610 if (defined($powercycle_after_reboot)) {
611 sleep $powercycle_after_reboot;
612 run_command "$power_cycle";
613 }
614 } else {
615 # nope? power cycle it.
616 run_command "$power_cycle";
617 }
618}
619
620sub do_not_reboot {
621 my $i = $iteration;
622
623 return $test_type eq "build" ||
624 ($test_type eq "patchcheck" && $opt{"PATCHCHECK_TYPE[$i]"} eq "build") ||
625 ($test_type eq "bisect" && $opt{"BISECT_TYPE[$i]"} eq "build");
626}
627
628sub dodie {
629 doprint "CRITICAL FAILURE... ", @_, "\n";
630
631 my $i = $iteration;
632
633 if ($reboot_on_error && !do_not_reboot) {
634
635 doprint "REBOOTING\n";
636 reboot;
637
638 } elsif ($poweroff_on_error && defined($power_off)) {
639 doprint "POWERING OFF\n";
640 `$power_off`;
641 }
642
643 if (defined($opt{"LOG_FILE"})) {
644 print " See $opt{LOG_FILE} for more info.\n";
645 }
646
647 die @_, "\n";
648}
649
650sub open_console {
651 my ($fp) = @_;
652
653 my $flags;
654
655 my $pid = open($fp, "$console|") or
656 dodie "Can't open console $console";
657
658 $flags = fcntl($fp, F_GETFL, 0) or
659 dodie "Can't get flags for the socket: $!";
660 $flags = fcntl($fp, F_SETFL, $flags | O_NONBLOCK) or
661 dodie "Can't set flags for the socket: $!";
662
663 return $pid;
664}
665
666sub close_console {
667 my ($fp, $pid) = @_;
668
669 doprint "kill child process $pid\n";
670 kill 2, $pid;
671
672 print "closing!\n";
673 close($fp);
674}
675
676sub start_monitor {
677 if ($monitor_cnt++) {
678 return;
679 }
680 $monitor_fp = \*MONFD;
681 $monitor_pid = open_console $monitor_fp;
682
683 return;
684
685 open(MONFD, "Stop perl from warning about single use of MONFD");
686}
687
688sub end_monitor {
689 if (--$monitor_cnt) {
690 return;
691 }
692 close_console($monitor_fp, $monitor_pid);
693}
694
695sub wait_for_monitor {
696 my ($time) = @_;
697 my $line;
698
699 doprint "** Wait for monitor to settle down **\n";
700
701 # read the monitor and wait for the system to calm down
702 do {
703 $line = wait_for_input($monitor_fp, $time);
704 print "$line" if (defined($line));
705 } while (defined($line));
706 print "** Monitor flushed **\n";
707}
708
709sub fail {
710
711 if ($die_on_failure) {
712 dodie @_;
713 }
714
715 doprint "FAILED\n";
716
717 my $i = $iteration;
718
719 # no need to reboot for just building.
720 if (!do_not_reboot) {
721 doprint "REBOOTING\n";
722 reboot;
723 start_monitor;
724 wait_for_monitor $sleep_time;
725 end_monitor;
726 }
727
728 my $name = "";
729
730 if (defined($test_name)) {
731 $name = " ($test_name)";
732 }
733
734 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
735 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
736 doprint "KTEST RESULT: TEST $i$name Failed: ", @_, "\n";
737 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
738 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
739
740 return 1 if (!defined($store_failures));
741
742 my @t = localtime;
743 my $date = sprintf "%04d%02d%02d%02d%02d%02d",
744 1900+$t[5],$t[4],$t[3],$t[2],$t[1],$t[0];
745
746 my $type = $build_type;
747 if ($type =~ /useconfig/) {
748 $type = "useconfig";
749 }
750
751 my $dir = "$machine-$test_type-$type-fail-$date";
752 my $faildir = "$store_failures/$dir";
753
754 if (!-d $faildir) {
755 mkpath($faildir) or
756 die "can't create $faildir";
757 }
758 if (-f "$output_config") {
759 cp "$output_config", "$faildir/config" or
760 die "failed to copy .config";
761 }
762 if (-f $buildlog) {
763 cp $buildlog, "$faildir/buildlog" or
764 die "failed to move $buildlog";
765 }
766 if (-f $dmesg) {
767 cp $dmesg, "$faildir/dmesg" or
768 die "failed to move $dmesg";
769 }
770
771 doprint "*** Saved info to $faildir ***\n";
772
773 return 1;
774}
775
776sub run_command {
777 my ($command) = @_;
778 my $dolog = 0;
779 my $dord = 0;
780 my $pid;
781
782 $command =~ s/\$SSH_USER/$ssh_user/g;
783 $command =~ s/\$MACHINE/$machine/g;
784
785 doprint("$command ... ");
786
787 $pid = open(CMD, "$command 2>&1 |") or
788 (fail "unable to exec $command" and return 0);
789
790 if (defined($opt{"LOG_FILE"})) {
791 open(LOG, ">>$opt{LOG_FILE}") or
792 dodie "failed to write to log";
793 $dolog = 1;
794 }
795
796 if (defined($redirect)) {
797 open (RD, ">$redirect") or
798 dodie "failed to write to redirect $redirect";
799 $dord = 1;
800 }
801
802 while (<CMD>) {
803 print LOG if ($dolog);
804 print RD if ($dord);
805 }
806
807 waitpid($pid, 0);
808 my $failed = $?;
809
810 close(CMD);
811 close(LOG) if ($dolog);
812 close(RD) if ($dord);
813
814 if ($failed) {
815 doprint "FAILED!\n";
816 } else {
817 doprint "SUCCESS\n";
818 }
819
820 return !$failed;
821}
822
823sub run_ssh {
824 my ($cmd) = @_;
825 my $cp_exec = $ssh_exec;
826
827 $cp_exec =~ s/\$SSH_COMMAND/$cmd/g;
828 return run_command "$cp_exec";
829}
830
831sub run_scp {
832 my ($src, $dst) = @_;
833 my $cp_scp = $scp_to_target;
834
835 $cp_scp =~ s/\$SRC_FILE/$src/g;
836 $cp_scp =~ s/\$DST_FILE/$dst/g;
837
838 return run_command "$cp_scp";
839}
840
841sub get_grub_index {
842
843 if ($reboot_type ne "grub") {
844 return;
845 }
846 return if (defined($grub_number));
847
848 doprint "Find grub menu ... ";
849 $grub_number = -1;
850
851 my $ssh_grub = $ssh_exec;
852 $ssh_grub =~ s,\$SSH_COMMAND,cat /boot/grub/menu.lst,g;
853
854 open(IN, "$ssh_grub |")
855 or die "unable to get menu.lst";
856
857 while (<IN>) {
858 if (/^\s*title\s+$grub_menu\s*$/) {
859 $grub_number++;
860 last;
861 } elsif (/^\s*title\s/) {
862 $grub_number++;
863 }
864 }
865 close(IN);
866
867 die "Could not find '$grub_menu' in /boot/grub/menu on $machine"
868 if ($grub_number < 0);
869 doprint "$grub_number\n";
870}
871
872sub wait_for_input
873{
874 my ($fp, $time) = @_;
875 my $rin;
876 my $ready;
877 my $line;
878 my $ch;
879
880 if (!defined($time)) {
881 $time = $timeout;
882 }
883
884 $rin = '';
885 vec($rin, fileno($fp), 1) = 1;
886 $ready = select($rin, undef, undef, $time);
887
888 $line = "";
889
890 # try to read one char at a time
891 while (sysread $fp, $ch, 1) {
892 $line .= $ch;
893 last if ($ch eq "\n");
894 }
895
896 if (!length($line)) {
897 return undef;
898 }
899
900 return $line;
901}
902
903sub reboot_to {
904 if ($reboot_type eq "grub") {
905 run_ssh "'(echo \"savedefault --default=$grub_number --once\" | grub --batch && reboot)'";
906 return;
907 }
908
909 run_command "$reboot_script";
910}
911
912sub get_sha1 {
913 my ($commit) = @_;
914
915 doprint "git rev-list --max-count=1 $commit ... ";
916 my $sha1 = `git rev-list --max-count=1 $commit`;
917 my $ret = $?;
918
919 logit $sha1;
920
921 if ($ret) {
922 doprint "FAILED\n";
923 dodie "Failed to get git $commit";
924 }
925
926 print "SUCCESS\n";
927
928 chomp $sha1;
929
930 return $sha1;
931}
932
933sub monitor {
934 my $booted = 0;
935 my $bug = 0;
936 my $skip_call_trace = 0;
937 my $loops;
938
939 wait_for_monitor 5;
940
941 my $line;
942 my $full_line = "";
943
944 open(DMESG, "> $dmesg") or
945 die "unable to write to $dmesg";
946
947 reboot_to;
948
949 my $success_start;
950 my $failure_start;
951 my $monitor_start = time;
952 my $done = 0;
953 my $version_found = 0;
954
955 while (!$done) {
956
957 if ($bug && defined($stop_after_failure) &&
958 $stop_after_failure >= 0) {
959 my $time = $stop_after_failure - (time - $failure_start);
960 $line = wait_for_input($monitor_fp, $time);
961 if (!defined($line)) {
962 doprint "bug timed out after $booted_timeout seconds\n";
963 doprint "Test forced to stop after $stop_after_failure seconds after failure\n";
964 last;
965 }
966 } elsif ($booted) {
967 $line = wait_for_input($monitor_fp, $booted_timeout);
968 if (!defined($line)) {
969 my $s = $booted_timeout == 1 ? "" : "s";
970 doprint "Successful boot found: break after $booted_timeout second$s\n";
971 last;
972 }
973 } else {
974 $line = wait_for_input($monitor_fp);
975 if (!defined($line)) {
976 my $s = $timeout == 1 ? "" : "s";
977 doprint "Timed out after $timeout second$s\n";
978 last;
979 }
980 }
981
982 doprint $line;
983 print DMESG $line;
984
985 # we are not guaranteed to get a full line
986 $full_line .= $line;
987
988 if ($full_line =~ /$success_line/) {
989 $booted = 1;
990 $success_start = time;
991 }
992
993 if ($booted && defined($stop_after_success) &&
994 $stop_after_success >= 0) {
995 my $now = time;
996 if ($now - $success_start >= $stop_after_success) {
997 doprint "Test forced to stop after $stop_after_success seconds after success\n";
998 last;
999 }
1000 }
1001
1002 if ($full_line =~ /\[ backtrace testing \]/) {
1003 $skip_call_trace = 1;
1004 }
1005
1006 if ($full_line =~ /call trace:/i) {
1007 if (!$bug && !$skip_call_trace) {
1008 $bug = 1;
1009 $failure_start = time;
1010 }
1011 }
1012
1013 if ($bug && defined($stop_after_failure) &&
1014 $stop_after_failure >= 0) {
1015 my $now = time;
1016 if ($now - $failure_start >= $stop_after_failure) {
1017 doprint "Test forced to stop after $stop_after_failure seconds after failure\n";
1018 last;
1019 }
1020 }
1021
1022 if ($full_line =~ /\[ end of backtrace testing \]/) {
1023 $skip_call_trace = 0;
1024 }
1025
1026 if ($full_line =~ /Kernel panic -/) {
1027 $failure_start = time;
1028 $bug = 1;
1029 }
1030
1031 # Detect triple faults by testing the banner
1032 if ($full_line =~ /\bLinux version (\S+).*\n/) {
1033 if ($1 eq $version) {
1034 $version_found = 1;
1035 } elsif ($version_found && $detect_triplefault) {
1036 # We already booted into the kernel we are testing,
1037 # but now we booted into another kernel?
1038 # Consider this a triple fault.
1039 doprint "Aleady booted in Linux kernel $version, but now\n";
1040 doprint "we booted into Linux kernel $1.\n";
1041 doprint "Assuming that this is a triple fault.\n";
1042 doprint "To disable this: set DETECT_TRIPLE_FAULT to 0\n";
1043 last;
1044 }
1045 }
1046
1047 if ($line =~ /\n/) {
1048 $full_line = "";
1049 }
1050
1051 if ($stop_test_after > 0 && !$booted && !$bug) {
1052 if (time - $monitor_start > $stop_test_after) {
1053 doprint "STOP_TEST_AFTER ($stop_test_after seconds) timed out\n";
1054 $done = 1;
1055 }
1056 }
1057 }
1058
1059 close(DMESG);
1060
1061 if ($bug) {
1062 return 0 if ($in_bisect);
1063 fail "failed - got a bug report" and return 0;
1064 }
1065
1066 if (!$booted) {
1067 return 0 if ($in_bisect);
1068 fail "failed - never got a boot prompt." and return 0;
1069 }
1070
1071 return 1;
1072}
1073
1074sub do_post_install {
1075
1076 return if (!defined($post_install));
1077
1078 my $cp_post_install = $post_install;
1079 $cp_post_install =~ s/\$KERNEL_VERSION/$version/g;
1080 run_command "$cp_post_install" or
1081 dodie "Failed to run post install";
1082}
1083
1084sub install {
1085
1086 run_scp "$outputdir/$build_target", "$target_image" or
1087 dodie "failed to copy image";
1088
1089 my $install_mods = 0;
1090
1091 # should we process modules?
1092 $install_mods = 0;
1093 open(IN, "$output_config") or dodie("Can't read config file");
1094 while (<IN>) {
1095 if (/CONFIG_MODULES(=y)?/) {
1096 $install_mods = 1 if (defined($1));
1097 last;
1098 }
1099 }
1100 close(IN);
1101
1102 if (!$install_mods) {
1103 do_post_install;
1104 doprint "No modules needed\n";
1105 return;
1106 }
1107
1108 run_command "$make INSTALL_MOD_PATH=$tmpdir modules_install" or
1109 dodie "Failed to install modules";
1110
1111 my $modlib = "/lib/modules/$version";
1112 my $modtar = "ktest-mods.tar.bz2";
1113
1114 run_ssh "rm -rf $modlib" or
1115 dodie "failed to remove old mods: $modlib";
1116
1117 # would be nice if scp -r did not follow symbolic links
1118 run_command "cd $tmpdir && tar -cjf $modtar lib/modules/$version" or
1119 dodie "making tarball";
1120
1121 run_scp "$tmpdir/$modtar", "/tmp" or
1122 dodie "failed to copy modules";
1123
1124 unlink "$tmpdir/$modtar";
1125
1126 run_ssh "'(cd / && tar xjf /tmp/$modtar)'" or
1127 dodie "failed to tar modules";
1128
1129 run_ssh "rm -f /tmp/$modtar";
1130
1131 do_post_install;
1132}
1133
1134sub get_version {
1135 # get the release name
1136 doprint "$make kernelrelease ... ";
1137 $version = `$make kernelrelease | tail -1`;
1138 chomp($version);
1139 doprint "$version\n";
1140}
1141
1142sub start_monitor_and_boot {
1143 get_grub_index;
1144 get_version;
1145 install;
1146
1147 start_monitor;
1148 return monitor;
1149}
1150
1151sub check_buildlog {
1152 my ($patch) = @_;
1153
1154 my @files = `git show $patch | diffstat -l`;
1155
1156 open(IN, "git show $patch |") or
1157 dodie "failed to show $patch";
1158 while (<IN>) {
1159 if (m,^--- a/(.*),) {
1160 chomp $1;
1161 $files[$#files] = $1;
1162 }
1163 }
1164 close(IN);
1165
1166 open(IN, $buildlog) or dodie "Can't open $buildlog";
1167 while (<IN>) {
1168 if (/^\s*(.*?):.*(warning|error)/) {
1169 my $err = $1;
1170 foreach my $file (@files) {
1171 my $fullpath = "$builddir/$file";
1172 if ($file eq $err || $fullpath eq $err) {
1173 fail "$file built with warnings" and return 0;
1174 }
1175 }
1176 }
1177 }
1178 close(IN);
1179
1180 return 1;
1181}
1182
1183sub apply_min_config {
1184 my $outconfig = "$output_config.new";
1185
1186 # Read the config file and remove anything that
1187 # is in the force_config hash (from minconfig and others)
1188 # then add the force config back.
1189
1190 doprint "Applying minimum configurations into $output_config.new\n";
1191
1192 open (OUT, ">$outconfig") or
1193 dodie "Can't create $outconfig";
1194
1195 if (-f $output_config) {
1196 open (IN, $output_config) or
1197 dodie "Failed to open $output_config";
1198 while (<IN>) {
1199 if (/^(# )?(CONFIG_[^\s=]*)/) {
1200 next if (defined($force_config{$2}));
1201 }
1202 print OUT;
1203 }
1204 close IN;
1205 }
1206 foreach my $config (keys %force_config) {
1207 print OUT "$force_config{$config}\n";
1208 }
1209 close OUT;
1210
1211 run_command "mv $outconfig $output_config";
1212}
1213
1214sub make_oldconfig {
1215
1216 my @force_list = keys %force_config;
1217
1218 if ($#force_list >= 0) {
1219 apply_min_config;
1220 }
1221
1222 if (!run_command "$make oldnoconfig") {
1223 # Perhaps oldnoconfig doesn't exist in this version of the kernel
1224 # try a yes '' | oldconfig
1225 doprint "oldnoconfig failed, trying yes '' | make oldconfig\n";
1226 run_command "yes '' | $make oldconfig" or
1227 dodie "failed make config oldconfig";
1228 }
1229}
1230
1231# read a config file and use this to force new configs.
1232sub load_force_config {
1233 my ($config) = @_;
1234
1235 open(IN, $config) or
1236 dodie "failed to read $config";
1237 while (<IN>) {
1238 chomp;
1239 if (/^(CONFIG[^\s=]*)(\s*=.*)/) {
1240 $force_config{$1} = $_;
1241 } elsif (/^# (CONFIG_\S*) is not set/) {
1242 $force_config{$1} = $_;
1243 }
1244 }
1245 close IN;
1246}
1247
1248sub build {
1249 my ($type) = @_;
1250
1251 unlink $buildlog;
1252
1253 if (defined($pre_build)) {
1254 my $ret = run_command $pre_build;
1255 if (!$ret && defined($pre_build_die) &&
1256 $pre_build_die) {
1257 dodie "failed to pre_build\n";
1258 }
1259 }
1260
1261 if ($type =~ /^useconfig:(.*)/) {
1262 run_command "cp $1 $output_config" or
1263 dodie "could not copy $1 to .config";
1264
1265 $type = "oldconfig";
1266 }
1267
1268 # old config can ask questions
1269 if ($type eq "oldconfig") {
1270 $type = "oldnoconfig";
1271
1272 # allow for empty configs
1273 run_command "touch $output_config";
1274
1275 run_command "mv $output_config $outputdir/config_temp" or
1276 dodie "moving .config";
1277
1278 if (!$noclean && !run_command "$make mrproper") {
1279 dodie "make mrproper";
1280 }
1281
1282 run_command "mv $outputdir/config_temp $output_config" or
1283 dodie "moving config_temp";
1284
1285 } elsif (!$noclean) {
1286 unlink "$output_config";
1287 run_command "$make mrproper" or
1288 dodie "make mrproper";
1289 }
1290
1291 # add something to distinguish this build
1292 open(OUT, "> $outputdir/localversion") or dodie("Can't make localversion file");
1293 print OUT "$localversion\n";
1294 close(OUT);
1295
1296 if (defined($minconfig)) {
1297 load_force_config($minconfig);
1298 }
1299
1300 if ($type ne "oldnoconfig") {
1301 run_command "$make $type" or
1302 dodie "failed make config";
1303 }
1304 # Run old config regardless, to enforce min configurations
1305 make_oldconfig;
1306
1307 $redirect = "$buildlog";
1308 my $build_ret = run_command "$make $build_options";
1309 undef $redirect;
1310
1311 if (defined($post_build)) {
1312 my $ret = run_command $post_build;
1313 if (!$ret && defined($post_build_die) &&
1314 $post_build_die) {
1315 dodie "failed to post_build\n";
1316 }
1317 }
1318
1319 if (!$build_ret) {
1320 # bisect may need this to pass
1321 return 0 if ($in_bisect);
1322 fail "failed build" and return 0;
1323 }
1324
1325 return 1;
1326}
1327
1328sub halt {
1329 if (!run_ssh "halt" or defined($power_off)) {
1330 if (defined($poweroff_after_halt)) {
1331 sleep $poweroff_after_halt;
1332 run_command "$power_off";
1333 }
1334 } else {
1335 # nope? the zap it!
1336 run_command "$power_off";
1337 }
1338}
1339
1340sub success {
1341 my ($i) = @_;
1342
1343 $successes++;
1344
1345 my $name = "";
1346
1347 if (defined($test_name)) {
1348 $name = " ($test_name)";
1349 }
1350
1351 doprint "\n\n*******************************************\n";
1352 doprint "*******************************************\n";
1353 doprint "KTEST RESULT: TEST $i$name SUCCESS!!!! **\n";
1354 doprint "*******************************************\n";
1355 doprint "*******************************************\n";
1356
1357 if ($i != $opt{"NUM_TESTS"} && !do_not_reboot) {
1358 doprint "Reboot and wait $sleep_time seconds\n";
1359 reboot;
1360 start_monitor;
1361 wait_for_monitor $sleep_time;
1362 end_monitor;
1363 }
1364}
1365
1366sub answer_bisect {
1367 for (;;) {
1368 doprint "Pass or fail? [p/f]";
1369 my $ans = <STDIN>;
1370 chomp $ans;
1371 if ($ans eq "p" || $ans eq "P") {
1372 return 1;
1373 } elsif ($ans eq "f" || $ans eq "F") {
1374 return 0;
1375 } else {
1376 print "Please answer 'P' or 'F'\n";
1377 }
1378 }
1379}
1380
1381sub child_run_test {
1382 my $failed = 0;
1383
1384 # child should have no power
1385 $reboot_on_error = 0;
1386 $poweroff_on_error = 0;
1387 $die_on_failure = 1;
1388
1389 run_command $run_test or $failed = 1;
1390 exit $failed;
1391}
1392
1393my $child_done;
1394
1395sub child_finished {
1396 $child_done = 1;
1397}
1398
1399sub do_run_test {
1400 my $child_pid;
1401 my $child_exit;
1402 my $line;
1403 my $full_line;
1404 my $bug = 0;
1405
1406 wait_for_monitor 1;
1407
1408 doprint "run test $run_test\n";
1409
1410 $child_done = 0;
1411
1412 $SIG{CHLD} = qw(child_finished);
1413
1414 $child_pid = fork;
1415
1416 child_run_test if (!$child_pid);
1417
1418 $full_line = "";
1419
1420 do {
1421 $line = wait_for_input($monitor_fp, 1);
1422 if (defined($line)) {
1423
1424 # we are not guaranteed to get a full line
1425 $full_line .= $line;
1426 doprint $line;
1427
1428 if ($full_line =~ /call trace:/i) {
1429 $bug = 1;
1430 }
1431
1432 if ($full_line =~ /Kernel panic -/) {
1433 $bug = 1;
1434 }
1435
1436 if ($line =~ /\n/) {
1437 $full_line = "";
1438 }
1439 }
1440 } while (!$child_done && !$bug);
1441
1442 if ($bug) {
1443 my $failure_start = time;
1444 my $now;
1445 do {
1446 $line = wait_for_input($monitor_fp, 1);
1447 if (defined($line)) {
1448 doprint $line;
1449 }
1450 $now = time;
1451 if ($now - $failure_start >= $stop_after_failure) {
1452 last;
1453 }
1454 } while (defined($line));
1455
1456 doprint "Detected kernel crash!\n";
1457 # kill the child with extreme prejudice
1458 kill 9, $child_pid;
1459 }
1460
1461 waitpid $child_pid, 0;
1462 $child_exit = $?;
1463
1464 if ($bug || $child_exit) {
1465 return 0 if $in_bisect;
1466 fail "test failed" and return 0;
1467 }
1468 return 1;
1469}
1470
1471sub run_git_bisect {
1472 my ($command) = @_;
1473
1474 doprint "$command ... ";
1475
1476 my $output = `$command 2>&1`;
1477 my $ret = $?;
1478
1479 logit $output;
1480
1481 if ($ret) {
1482 doprint "FAILED\n";
1483 dodie "Failed to git bisect";
1484 }
1485
1486 doprint "SUCCESS\n";
1487 if ($output =~ m/^(Bisecting: .*\(roughly \d+ steps?\))\s+\[([[:xdigit:]]+)\]/) {
1488 doprint "$1 [$2]\n";
1489 } elsif ($output =~ m/^([[:xdigit:]]+) is the first bad commit/) {
1490 $bisect_bad = $1;
1491 doprint "Found bad commit... $1\n";
1492 return 0;
1493 } else {
1494 # we already logged it, just print it now.
1495 print $output;
1496 }
1497
1498 return 1;
1499}
1500
1501sub bisect_reboot {
1502 doprint "Reboot and sleep $bisect_sleep_time seconds\n";
1503 reboot;
1504 start_monitor;
1505 wait_for_monitor $bisect_sleep_time;
1506 end_monitor;
1507}
1508
1509# returns 1 on success, 0 on failure, -1 on skip
1510sub run_bisect_test {
1511 my ($type, $buildtype) = @_;
1512
1513 my $failed = 0;
1514 my $result;
1515 my $output;
1516 my $ret;
1517
1518 $in_bisect = 1;
1519
1520 build $buildtype or $failed = 1;
1521
1522 if ($type ne "build") {
1523 if ($failed && $bisect_skip) {
1524 $in_bisect = 0;
1525 return -1;
1526 }
1527 dodie "Failed on build" if $failed;
1528
1529 # Now boot the box
1530 start_monitor_and_boot or $failed = 1;
1531
1532 if ($type ne "boot") {
1533 if ($failed && $bisect_skip) {
1534 end_monitor;
1535 bisect_reboot;
1536 $in_bisect = 0;
1537 return -1;
1538 }
1539 dodie "Failed on boot" if $failed;
1540
1541 do_run_test or $failed = 1;
1542 }
1543 end_monitor;
1544 }
1545
1546 if ($failed) {
1547 $result = 0;
1548 } else {
1549 $result = 1;
1550 }
1551
1552 # reboot the box to a kernel we can ssh to
1553 if ($type ne "build") {
1554 bisect_reboot;
1555 }
1556 $in_bisect = 0;
1557
1558 return $result;
1559}
1560
1561sub run_bisect {
1562 my ($type) = @_;
1563 my $buildtype = "oldconfig";
1564
1565 # We should have a minconfig to use?
1566 if (defined($minconfig)) {
1567 $buildtype = "useconfig:$minconfig";
1568 }
1569
1570 my $ret = run_bisect_test $type, $buildtype;
1571
1572 if ($bisect_manual) {
1573 $ret = answer_bisect;
1574 }
1575
1576 # Are we looking for where it worked, not failed?
1577 if ($reverse_bisect) {
1578 $ret = !$ret;
1579 }
1580
1581 if ($ret > 0) {
1582 return "good";
1583 } elsif ($ret == 0) {
1584 return "bad";
1585 } elsif ($bisect_skip) {
1586 doprint "HIT A BAD COMMIT ... SKIPPING\n";
1587 return "skip";
1588 }
1589}
1590
1591sub bisect {
1592 my ($i) = @_;
1593
1594 my $result;
1595
1596 die "BISECT_GOOD[$i] not defined\n" if (!defined($opt{"BISECT_GOOD[$i]"}));
1597 die "BISECT_BAD[$i] not defined\n" if (!defined($opt{"BISECT_BAD[$i]"}));
1598 die "BISECT_TYPE[$i] not defined\n" if (!defined($opt{"BISECT_TYPE[$i]"}));
1599
1600 my $good = $opt{"BISECT_GOOD[$i]"};
1601 my $bad = $opt{"BISECT_BAD[$i]"};
1602 my $type = $opt{"BISECT_TYPE[$i]"};
1603 my $start = $opt{"BISECT_START[$i]"};
1604 my $replay = $opt{"BISECT_REPLAY[$i]"};
1605 my $start_files = $opt{"BISECT_FILES[$i]"};
1606
1607 if (defined($start_files)) {
1608 $start_files = " -- " . $start_files;
1609 } else {
1610 $start_files = "";
1611 }
1612
1613 # convert to true sha1's
1614 $good = get_sha1($good);
1615 $bad = get_sha1($bad);
1616
1617 if (defined($opt{"BISECT_REVERSE[$i]"}) &&
1618 $opt{"BISECT_REVERSE[$i]"} == 1) {
1619 doprint "Performing a reverse bisect (bad is good, good is bad!)\n";
1620 $reverse_bisect = 1;
1621 } else {
1622 $reverse_bisect = 0;
1623 }
1624
1625 # Can't have a test without having a test to run
1626 if ($type eq "test" && !defined($run_test)) {
1627 $type = "boot";
1628 }
1629
1630 my $check = $opt{"BISECT_CHECK[$i]"};
1631 if (defined($check) && $check ne "0") {
1632
1633 # get current HEAD
1634 my $head = get_sha1("HEAD");
1635
1636 if ($check ne "good") {
1637 doprint "TESTING BISECT BAD [$bad]\n";
1638 run_command "git checkout $bad" or
1639 die "Failed to checkout $bad";
1640
1641 $result = run_bisect $type;
1642
1643 if ($result ne "bad") {
1644 fail "Tested BISECT_BAD [$bad] and it succeeded" and return 0;
1645 }
1646 }
1647
1648 if ($check ne "bad") {
1649 doprint "TESTING BISECT GOOD [$good]\n";
1650 run_command "git checkout $good" or
1651 die "Failed to checkout $good";
1652
1653 $result = run_bisect $type;
1654
1655 if ($result ne "good") {
1656 fail "Tested BISECT_GOOD [$good] and it failed" and return 0;
1657 }
1658 }
1659
1660 # checkout where we started
1661 run_command "git checkout $head" or
1662 die "Failed to checkout $head";
1663 }
1664
1665 run_command "git bisect start$start_files" or
1666 dodie "could not start bisect";
1667
1668 run_command "git bisect good $good" or
1669 dodie "could not set bisect good to $good";
1670
1671 run_git_bisect "git bisect bad $bad" or
1672 dodie "could not set bisect bad to $bad";
1673
1674 if (defined($replay)) {
1675 run_command "git bisect replay $replay" or
1676 dodie "failed to run replay";
1677 }
1678
1679 if (defined($start)) {
1680 run_command "git checkout $start" or
1681 dodie "failed to checkout $start";
1682 }
1683
1684 my $test;
1685 do {
1686 $result = run_bisect $type;
1687 $test = run_git_bisect "git bisect $result";
1688 } while ($test);
1689
1690 run_command "git bisect log" or
1691 dodie "could not capture git bisect log";
1692
1693 run_command "git bisect reset" or
1694 dodie "could not reset git bisect";
1695
1696 doprint "Bad commit was [$bisect_bad]\n";
1697
1698 success $i;
1699}
1700
1701my %config_ignore;
1702my %config_set;
1703
1704my %config_list;
1705my %null_config;
1706
1707my %dependency;
1708
1709sub assign_configs {
1710 my ($hash, $config) = @_;
1711
1712 open (IN, $config)
1713 or dodie "Failed to read $config";
1714
1715 while (<IN>) {
1716 if (/^((CONFIG\S*)=.*)/) {
1717 ${$hash}{$2} = $1;
1718 }
1719 }
1720
1721 close(IN);
1722}
1723
1724sub process_config_ignore {
1725 my ($config) = @_;
1726
1727 assign_configs \%config_ignore, $config;
1728}
1729
1730sub read_current_config {
1731 my ($config_ref) = @_;
1732
1733 %{$config_ref} = ();
1734 undef %{$config_ref};
1735
1736 my @key = keys %{$config_ref};
1737 if ($#key >= 0) {
1738 print "did not delete!\n";
1739 exit;
1740 }
1741 open (IN, "$output_config");
1742
1743 while (<IN>) {
1744 if (/^(CONFIG\S+)=(.*)/) {
1745 ${$config_ref}{$1} = $2;
1746 }
1747 }
1748 close(IN);
1749}
1750
1751sub get_dependencies {
1752 my ($config) = @_;
1753
1754 my $arr = $dependency{$config};
1755 if (!defined($arr)) {
1756 return ();
1757 }
1758
1759 my @deps = @{$arr};
1760
1761 foreach my $dep (@{$arr}) {
1762 print "ADD DEP $dep\n";
1763 @deps = (@deps, get_dependencies $dep);
1764 }
1765
1766 return @deps;
1767}
1768
1769sub create_config {
1770 my @configs = @_;
1771
1772 open(OUT, ">$output_config") or dodie "Can not write to $output_config";
1773
1774 foreach my $config (@configs) {
1775 print OUT "$config_set{$config}\n";
1776 my @deps = get_dependencies $config;
1777 foreach my $dep (@deps) {
1778 print OUT "$config_set{$dep}\n";
1779 }
1780 }
1781
1782 foreach my $config (keys %config_ignore) {
1783 print OUT "$config_ignore{$config}\n";
1784 }
1785 close(OUT);
1786
1787# exit;
1788 make_oldconfig;
1789}
1790
1791sub compare_configs {
1792 my (%a, %b) = @_;
1793
1794 foreach my $item (keys %a) {
1795 if (!defined($b{$item})) {
1796 print "diff $item\n";
1797 return 1;
1798 }
1799 delete $b{$item};
1800 }
1801
1802 my @keys = keys %b;
1803 if ($#keys) {
1804 print "diff2 $keys[0]\n";
1805 }
1806 return -1 if ($#keys >= 0);
1807
1808 return 0;
1809}
1810
1811sub run_config_bisect_test {
1812 my ($type) = @_;
1813
1814 return run_bisect_test $type, "oldconfig";
1815}
1816
1817sub process_passed {
1818 my (%configs) = @_;
1819
1820 doprint "These configs had no failure: (Enabling them for further compiles)\n";
1821 # Passed! All these configs are part of a good compile.
1822 # Add them to the min options.
1823 foreach my $config (keys %configs) {
1824 if (defined($config_list{$config})) {
1825 doprint " removing $config\n";
1826 $config_ignore{$config} = $config_list{$config};
1827 delete $config_list{$config};
1828 }
1829 }
1830 doprint "config copied to $outputdir/config_good\n";
1831 run_command "cp -f $output_config $outputdir/config_good";
1832}
1833
1834sub process_failed {
1835 my ($config) = @_;
1836
1837 doprint "\n\n***************************************\n";
1838 doprint "Found bad config: $config\n";
1839 doprint "***************************************\n\n";
1840}
1841
1842sub run_config_bisect {
1843
1844 my @start_list = keys %config_list;
1845
1846 if ($#start_list < 0) {
1847 doprint "No more configs to test!!!\n";
1848 return -1;
1849 }
1850
1851 doprint "***** RUN TEST ***\n";
1852 my $type = $opt{"CONFIG_BISECT_TYPE[$iteration]"};
1853 my $ret;
1854 my %current_config;
1855
1856 my $count = $#start_list + 1;
1857 doprint " $count configs to test\n";
1858
1859 my $half = int($#start_list / 2);
1860
1861 do {
1862 my @tophalf = @start_list[0 .. $half];
1863
1864 create_config @tophalf;
1865 read_current_config \%current_config;
1866
1867 $count = $#tophalf + 1;
1868 doprint "Testing $count configs\n";
1869 my $found = 0;
1870 # make sure we test something
1871 foreach my $config (@tophalf) {
1872 if (defined($current_config{$config})) {
1873 logit " $config\n";
1874 $found = 1;
1875 }
1876 }
1877 if (!$found) {
1878 # try the other half
1879 doprint "Top half produced no set configs, trying bottom half\n";
1880 @tophalf = @start_list[$half + 1 .. $#start_list];
1881 create_config @tophalf;
1882 read_current_config \%current_config;
1883 foreach my $config (@tophalf) {
1884 if (defined($current_config{$config})) {
1885 logit " $config\n";
1886 $found = 1;
1887 }
1888 }
1889 if (!$found) {
1890 doprint "Failed: Can't make new config with current configs\n";
1891 foreach my $config (@start_list) {
1892 doprint " CONFIG: $config\n";
1893 }
1894 return -1;
1895 }
1896 $count = $#tophalf + 1;
1897 doprint "Testing $count configs\n";
1898 }
1899
1900 $ret = run_config_bisect_test $type;
1901 if ($bisect_manual) {
1902 $ret = answer_bisect;
1903 }
1904 if ($ret) {
1905 process_passed %current_config;
1906 return 0;
1907 }
1908
1909 doprint "This config had a failure.\n";
1910 doprint "Removing these configs that were not set in this config:\n";
1911 doprint "config copied to $outputdir/config_bad\n";
1912 run_command "cp -f $output_config $outputdir/config_bad";
1913
1914 # A config exists in this group that was bad.
1915 foreach my $config (keys %config_list) {
1916 if (!defined($current_config{$config})) {
1917 doprint " removing $config\n";
1918 delete $config_list{$config};
1919 }
1920 }
1921
1922 @start_list = @tophalf;
1923
1924 if ($#start_list == 0) {
1925 process_failed $start_list[0];
1926 return 1;
1927 }
1928
1929 # remove half the configs we are looking at and see if
1930 # they are good.
1931 $half = int($#start_list / 2);
1932 } while ($#start_list > 0);
1933
1934 # we found a single config, try it again unless we are running manually
1935
1936 if ($bisect_manual) {
1937 process_failed $start_list[0];
1938 return 1;
1939 }
1940
1941 my @tophalf = @start_list[0 .. 0];
1942
1943 $ret = run_config_bisect_test $type;
1944 if ($ret) {
1945 process_passed %current_config;
1946 return 0;
1947 }
1948
1949 process_failed $start_list[0];
1950 return 1;
1951}
1952
1953sub config_bisect {
1954 my ($i) = @_;
1955
1956 my $start_config = $opt{"CONFIG_BISECT[$i]"};
1957
1958 my $tmpconfig = "$tmpdir/use_config";
1959
1960 if (defined($config_bisect_good)) {
1961 process_config_ignore $config_bisect_good;
1962 }
1963
1964 # Make the file with the bad config and the min config
1965 if (defined($minconfig)) {
1966 # read the min config for things to ignore
1967 run_command "cp $minconfig $tmpconfig" or
1968 dodie "failed to copy $minconfig to $tmpconfig";
1969 } else {
1970 unlink $tmpconfig;
1971 }
1972
1973 if (-f $tmpconfig) {
1974 load_force_config($tmpconfig);
1975 process_config_ignore $tmpconfig;
1976 }
1977
1978 # now process the start config
1979 run_command "cp $start_config $output_config" or
1980 dodie "failed to copy $start_config to $output_config";
1981
1982 # read directly what we want to check
1983 my %config_check;
1984 open (IN, $output_config)
1985 or dodie "faied to open $output_config";
1986
1987 while (<IN>) {
1988 if (/^((CONFIG\S*)=.*)/) {
1989 $config_check{$2} = $1;
1990 }
1991 }
1992 close(IN);
1993
1994 # Now run oldconfig with the minconfig
1995 make_oldconfig;
1996
1997 # check to see what we lost (or gained)
1998 open (IN, $output_config)
1999 or dodie "Failed to read $start_config";
2000
2001 my %removed_configs;
2002 my %added_configs;
2003
2004 while (<IN>) {
2005 if (/^((CONFIG\S*)=.*)/) {
2006 # save off all options
2007 $config_set{$2} = $1;
2008 if (defined($config_check{$2})) {
2009 if (defined($config_ignore{$2})) {
2010 $removed_configs{$2} = $1;
2011 } else {
2012 $config_list{$2} = $1;
2013 }
2014 } elsif (!defined($config_ignore{$2})) {
2015 $added_configs{$2} = $1;
2016 $config_list{$2} = $1;
2017 }
2018 }
2019 }
2020 close(IN);
2021
2022 my @confs = keys %removed_configs;
2023 if ($#confs >= 0) {
2024 doprint "Configs overridden by default configs and removed from check:\n";
2025 foreach my $config (@confs) {
2026 doprint " $config\n";
2027 }
2028 }
2029 @confs = keys %added_configs;
2030 if ($#confs >= 0) {
2031 doprint "Configs appearing in make oldconfig and added:\n";
2032 foreach my $config (@confs) {
2033 doprint " $config\n";
2034 }
2035 }
2036
2037 my %config_test;
2038 my $once = 0;
2039
2040 # Sometimes kconfig does weird things. We must make sure
2041 # that the config we autocreate has everything we need
2042 # to test, otherwise we may miss testing configs, or
2043 # may not be able to create a new config.
2044 # Here we create a config with everything set.
2045 create_config (keys %config_list);
2046 read_current_config \%config_test;
2047 foreach my $config (keys %config_list) {
2048 if (!defined($config_test{$config})) {
2049 if (!$once) {
2050 $once = 1;
2051 doprint "Configs not produced by kconfig (will not be checked):\n";
2052 }
2053 doprint " $config\n";
2054 delete $config_list{$config};
2055 }
2056 }
2057 my $ret;
2058 do {
2059 $ret = run_config_bisect;
2060 } while (!$ret);
2061
2062 return $ret if ($ret < 0);
2063
2064 success $i;
2065}
2066
2067sub patchcheck_reboot {
2068 doprint "Reboot and sleep $patchcheck_sleep_time seconds\n";
2069 reboot;
2070 start_monitor;
2071 wait_for_monitor $patchcheck_sleep_time;
2072 end_monitor;
2073}
2074
2075sub patchcheck {
2076 my ($i) = @_;
2077
2078 die "PATCHCHECK_START[$i] not defined\n"
2079 if (!defined($opt{"PATCHCHECK_START[$i]"}));
2080 die "PATCHCHECK_TYPE[$i] not defined\n"
2081 if (!defined($opt{"PATCHCHECK_TYPE[$i]"}));
2082
2083 my $start = $opt{"PATCHCHECK_START[$i]"};
2084
2085 my $end = "HEAD";
2086 if (defined($opt{"PATCHCHECK_END[$i]"})) {
2087 $end = $opt{"PATCHCHECK_END[$i]"};
2088 }
2089
2090 # Get the true sha1's since we can use things like HEAD~3
2091 $start = get_sha1($start);
2092 $end = get_sha1($end);
2093
2094 my $type = $opt{"PATCHCHECK_TYPE[$i]"};
2095
2096 # Can't have a test without having a test to run
2097 if ($type eq "test" && !defined($run_test)) {
2098 $type = "boot";
2099 }
2100
2101 open (IN, "git log --pretty=oneline $end|") or
2102 dodie "could not get git list";
2103
2104 my @list;
2105
2106 while (<IN>) {
2107 chomp;
2108 $list[$#list+1] = $_;
2109 last if (/^$start/);
2110 }
2111 close(IN);
2112
2113 if ($list[$#list] !~ /^$start/) {
2114 fail "SHA1 $start not found";
2115 }
2116
2117 # go backwards in the list
2118 @list = reverse @list;
2119
2120 my $save_clean = $noclean;
2121 my %ignored_warnings;
2122
2123 if (defined($ignore_warnings)) {
2124 foreach my $sha1 (split /\s+/, $ignore_warnings) {
2125 $ignored_warnings{$sha1} = 1;
2126 }
2127 }
2128
2129 $in_patchcheck = 1;
2130 foreach my $item (@list) {
2131 my $sha1 = $item;
2132 $sha1 =~ s/^([[:xdigit:]]+).*/$1/;
2133
2134 doprint "\nProcessing commit $item\n\n";
2135
2136 run_command "git checkout $sha1" or
2137 die "Failed to checkout $sha1";
2138
2139 # only clean on the first and last patch
2140 if ($item eq $list[0] ||
2141 $item eq $list[$#list]) {
2142 $noclean = $save_clean;
2143 } else {
2144 $noclean = 1;
2145 }
2146
2147 if (defined($minconfig)) {
2148 build "useconfig:$minconfig" or return 0;
2149 } else {
2150 # ?? no config to use?
2151 build "oldconfig" or return 0;
2152 }
2153
2154
2155 if (!defined($ignored_warnings{$sha1})) {
2156 check_buildlog $sha1 or return 0;
2157 }
2158
2159 next if ($type eq "build");
2160
2161 my $failed = 0;
2162
2163 start_monitor_and_boot or $failed = 1;
2164
2165 if (!$failed && $type ne "boot"){
2166 do_run_test or $failed = 1;
2167 }
2168 end_monitor;
2169 return 0 if ($failed);
2170
2171 patchcheck_reboot;
2172
2173 }
2174 $in_patchcheck = 0;
2175 success $i;
2176
2177 return 1;
2178}
2179
2180my %depends;
2181my $iflevel = 0;
2182my @ifdeps;
2183
2184# prevent recursion
2185my %read_kconfigs;
2186
2187# taken from streamline_config.pl
2188sub read_kconfig {
2189 my ($kconfig) = @_;
2190
2191 my $state = "NONE";
2192 my $config;
2193 my @kconfigs;
2194
2195 my $cont = 0;
2196 my $line;
2197
2198
2199 if (! -f $kconfig) {
2200 doprint "file $kconfig does not exist, skipping\n";
2201 return;
2202 }
2203
2204 open(KIN, "$kconfig")
2205 or die "Can't open $kconfig";
2206 while (<KIN>) {
2207 chomp;
2208
2209 # Make sure that lines ending with \ continue
2210 if ($cont) {
2211 $_ = $line . " " . $_;
2212 }
2213
2214 if (s/\\$//) {
2215 $cont = 1;
2216 $line = $_;
2217 next;
2218 }
2219
2220 $cont = 0;
2221
2222 # collect any Kconfig sources
2223 if (/^source\s*"(.*)"/) {
2224 $kconfigs[$#kconfigs+1] = $1;
2225 }
2226
2227 # configs found
2228 if (/^\s*(menu)?config\s+(\S+)\s*$/) {
2229 $state = "NEW";
2230 $config = $2;
2231
2232 for (my $i = 0; $i < $iflevel; $i++) {
2233 if ($i) {
2234 $depends{$config} .= " " . $ifdeps[$i];
2235 } else {
2236 $depends{$config} = $ifdeps[$i];
2237 }
2238 $state = "DEP";
2239 }
2240
2241 # collect the depends for the config
2242 } elsif ($state eq "NEW" && /^\s*depends\s+on\s+(.*)$/) {
2243
2244 if (defined($depends{$1})) {
2245 $depends{$config} .= " " . $1;
2246 } else {
2247 $depends{$config} = $1;
2248 }
2249
2250 # Get the configs that select this config
2251 } elsif ($state ne "NONE" && /^\s*select\s+(\S+)/) {
2252 if (defined($depends{$1})) {
2253 $depends{$1} .= " " . $config;
2254 } else {
2255 $depends{$1} = $config;
2256 }
2257
2258 # Check for if statements
2259 } elsif (/^if\s+(.*\S)\s*$/) {
2260 my $deps = $1;
2261 # remove beginning and ending non text
2262 $deps =~ s/^[^a-zA-Z0-9_]*//;
2263 $deps =~ s/[^a-zA-Z0-9_]*$//;
2264
2265 my @deps = split /[^a-zA-Z0-9_]+/, $deps;
2266
2267 $ifdeps[$iflevel++] = join ':', @deps;
2268
2269 } elsif (/^endif/) {
2270
2271 $iflevel-- if ($iflevel);
2272
2273 # stop on "help"
2274 } elsif (/^\s*help\s*$/) {
2275 $state = "NONE";
2276 }
2277 }
2278 close(KIN);
2279
2280 # read in any configs that were found.
2281 foreach $kconfig (@kconfigs) {
2282 if (!defined($read_kconfigs{$kconfig})) {
2283 $read_kconfigs{$kconfig} = 1;
2284 read_kconfig("$builddir/$kconfig");
2285 }
2286 }
2287}
2288
2289sub read_depends {
2290 # find out which arch this is by the kconfig file
2291 open (IN, $output_config)
2292 or dodie "Failed to read $output_config";
2293 my $arch;
2294 while (<IN>) {
2295 if (m,Linux/(\S+)\s+\S+\s+Kernel Configuration,) {
2296 $arch = $1;
2297 last;
2298 }
2299 }
2300 close IN;
2301
2302 if (!defined($arch)) {
2303 doprint "Could not find arch from config file\n";
2304 doprint "no dependencies used\n";
2305 return;
2306 }
2307
2308 # arch is really the subarch, we need to know
2309 # what directory to look at.
2310 if ($arch eq "i386" || $arch eq "x86_64") {
2311 $arch = "x86";
2312 } elsif ($arch =~ /^tile/) {
2313 $arch = "tile";
2314 }
2315
2316 my $kconfig = "$builddir/arch/$arch/Kconfig";
2317
2318 if (! -f $kconfig && $arch =~ /\d$/) {
2319 my $orig = $arch;
2320 # some subarchs have numbers, truncate them
2321 $arch =~ s/\d*$//;
2322 $kconfig = "$builddir/arch/$arch/Kconfig";
2323 if (! -f $kconfig) {
2324 doprint "No idea what arch dir $orig is for\n";
2325 doprint "no dependencies used\n";
2326 return;
2327 }
2328 }
2329
2330 read_kconfig($kconfig);
2331}
2332
2333sub read_config_list {
2334 my ($config) = @_;
2335
2336 open (IN, $config)
2337 or dodie "Failed to read $config";
2338
2339 while (<IN>) {
2340 if (/^((CONFIG\S*)=.*)/) {
2341 if (!defined($config_ignore{$2})) {
2342 $config_list{$2} = $1;
2343 }
2344 }
2345 }
2346
2347 close(IN);
2348}
2349
2350sub read_output_config {
2351 my ($config) = @_;
2352
2353 assign_configs \%config_ignore, $config;
2354}
2355
2356sub make_new_config {
2357 my @configs = @_;
2358
2359 open (OUT, ">$output_config")
2360 or dodie "Failed to write $output_config";
2361
2362 foreach my $config (@configs) {
2363 print OUT "$config\n";
2364 }
2365 close OUT;
2366}
2367
2368sub get_depends {
2369 my ($dep) = @_;
2370
2371 my $kconfig = $dep;
2372 $kconfig =~ s/CONFIG_//;
2373
2374 $dep = $depends{"$kconfig"};
2375
2376 # the dep string we have saves the dependencies as they
2377 # were found, including expressions like ! && ||. We
2378 # want to split this out into just an array of configs.
2379
2380 my $valid = "A-Za-z_0-9";
2381
2382 my @configs;
2383
2384 while ($dep =~ /[$valid]/) {
2385
2386 if ($dep =~ /^[^$valid]*([$valid]+)/) {
2387 my $conf = "CONFIG_" . $1;
2388
2389 $configs[$#configs + 1] = $conf;
2390
2391 $dep =~ s/^[^$valid]*[$valid]+//;
2392 } else {
2393 die "this should never happen";
2394 }
2395 }
2396
2397 return @configs;
2398}
2399
2400my %min_configs;
2401my %keep_configs;
2402my %save_configs;
2403my %processed_configs;
2404my %nochange_config;
2405
2406sub test_this_config {
2407 my ($config) = @_;
2408
2409 my $found;
2410
2411 # if we already processed this config, skip it
2412 if (defined($processed_configs{$config})) {
2413 return undef;
2414 }
2415 $processed_configs{$config} = 1;
2416
2417 # if this config failed during this round, skip it
2418 if (defined($nochange_config{$config})) {
2419 return undef;
2420 }
2421
2422 my $kconfig = $config;
2423 $kconfig =~ s/CONFIG_//;
2424
2425 # Test dependencies first
2426 if (defined($depends{"$kconfig"})) {
2427 my @parents = get_depends $config;
2428 foreach my $parent (@parents) {
2429 # if the parent is in the min config, check it first
2430 next if (!defined($min_configs{$parent}));
2431 $found = test_this_config($parent);
2432 if (defined($found)) {
2433 return $found;
2434 }
2435 }
2436 }
2437
2438 # Remove this config from the list of configs
2439 # do a make oldnoconfig and then read the resulting
2440 # .config to make sure it is missing the config that
2441 # we had before
2442 my %configs = %min_configs;
2443 delete $configs{$config};
2444 make_new_config ((values %configs), (values %keep_configs));
2445 make_oldconfig;
2446 undef %configs;
2447 assign_configs \%configs, $output_config;
2448
2449 return $config if (!defined($configs{$config}));
2450
2451 doprint "disabling config $config did not change .config\n";
2452
2453 $nochange_config{$config} = 1;
2454
2455 return undef;
2456}
2457
2458sub make_min_config {
2459 my ($i) = @_;
2460
2461 if (!defined($output_minconfig)) {
2462 fail "OUTPUT_MIN_CONFIG not defined" and return;
2463 }
2464
2465 # If output_minconfig exists, and the start_minconfig
2466 # came from min_config, than ask if we should use
2467 # that instead.
2468 if (-f $output_minconfig && !$start_minconfig_defined) {
2469 print "$output_minconfig exists\n";
2470 if (read_yn " Use it as minconfig?") {
2471 $start_minconfig = $output_minconfig;
2472 }
2473 }
2474
2475 if (!defined($start_minconfig)) {
2476 fail "START_MIN_CONFIG or MIN_CONFIG not defined" and return;
2477 }
2478
2479 my $temp_config = "$tmpdir/temp_config";
2480
2481 # First things first. We build an allnoconfig to find
2482 # out what the defaults are that we can't touch.
2483 # Some are selections, but we really can't handle selections.
2484
2485 my $save_minconfig = $minconfig;
2486 undef $minconfig;
2487
2488 run_command "$make allnoconfig" or return 0;
2489
2490 read_depends;
2491
2492 process_config_ignore $output_config;
2493
2494 undef %save_configs;
2495 undef %min_configs;
2496
2497 if (defined($ignore_config)) {
2498 # make sure the file exists
2499 `touch $ignore_config`;
2500 assign_configs \%save_configs, $ignore_config;
2501 }
2502
2503 %keep_configs = %save_configs;
2504
2505 doprint "Load initial configs from $start_minconfig\n";
2506
2507 # Look at the current min configs, and save off all the
2508 # ones that were set via the allnoconfig
2509 assign_configs \%min_configs, $start_minconfig;
2510
2511 my @config_keys = keys %min_configs;
2512
2513 # Remove anything that was set by the make allnoconfig
2514 # we shouldn't need them as they get set for us anyway.
2515 foreach my $config (@config_keys) {
2516 # Remove anything in the ignore_config
2517 if (defined($keep_configs{$config})) {
2518 my $file = $ignore_config;
2519 $file =~ s,.*/(.*?)$,$1,;
2520 doprint "$config set by $file ... ignored\n";
2521 delete $min_configs{$config};
2522 next;
2523 }
2524 # But make sure the settings are the same. If a min config
2525 # sets a selection, we do not want to get rid of it if
2526 # it is not the same as what we have. Just move it into
2527 # the keep configs.
2528 if (defined($config_ignore{$config})) {
2529 if ($config_ignore{$config} ne $min_configs{$config}) {
2530 doprint "$config is in allnoconfig as '$config_ignore{$config}'";
2531 doprint " but it is '$min_configs{$config}' in minconfig .. keeping\n";
2532 $keep_configs{$config} = $min_configs{$config};
2533 } else {
2534 doprint "$config set by allnoconfig ... ignored\n";
2535 }
2536 delete $min_configs{$config};
2537 }
2538 }
2539
2540 my $done = 0;
2541 my $take_two = 0;
2542
2543 while (!$done) {
2544
2545 my $config;
2546 my $found;
2547
2548 # Now disable each config one by one and do a make oldconfig
2549 # till we find a config that changes our list.
2550
2551 # Put configs that did not modify the config at the end.
2552 my @test_configs = keys %min_configs;
2553 my $reset = 1;
2554 for (my $i = 0; $i < $#test_configs; $i++) {
2555 if (!defined($nochange_config{$test_configs[0]})) {
2556 $reset = 0;
2557 last;
2558 }
2559 # This config didn't change the .config last time.
2560 # Place it at the end
2561 my $config = shift @test_configs;
2562 push @test_configs, $config;
2563 }
2564
2565 # if every test config has failed to modify the .config file
2566 # in the past, then reset and start over.
2567 if ($reset) {
2568 undef %nochange_config;
2569 }
2570
2571 undef %processed_configs;
2572
2573 foreach my $config (@test_configs) {
2574
2575 $found = test_this_config $config;
2576
2577 last if (defined($found));
2578
2579 # oh well, try another config
2580 }
2581
2582 if (!defined($found)) {
2583 # we could have failed due to the nochange_config hash
2584 # reset and try again
2585 if (!$take_two) {
2586 undef %nochange_config;
2587 $take_two = 1;
2588 next;
2589 }
2590 doprint "No more configs found that we can disable\n";
2591 $done = 1;
2592 last;
2593 }
2594 $take_two = 0;
2595
2596 $config = $found;
2597
2598 doprint "Test with $config disabled\n";
2599
2600 # set in_bisect to keep build and monitor from dieing
2601 $in_bisect = 1;
2602
2603 my $failed = 0;
2604 build "oldconfig";
2605 start_monitor_and_boot or $failed = 1;
2606 end_monitor;
2607
2608 $in_bisect = 0;
2609
2610 if ($failed) {
2611 doprint "$min_configs{$config} is needed to boot the box... keeping\n";
2612 # this config is needed, add it to the ignore list.
2613 $keep_configs{$config} = $min_configs{$config};
2614 $save_configs{$config} = $min_configs{$config};
2615 delete $min_configs{$config};
2616
2617 # update new ignore configs
2618 if (defined($ignore_config)) {
2619 open (OUT, ">$temp_config")
2620 or die "Can't write to $temp_config";
2621 foreach my $config (keys %save_configs) {
2622 print OUT "$save_configs{$config}\n";
2623 }
2624 close OUT;
2625 run_command "mv $temp_config $ignore_config" or
2626 dodie "failed to copy update to $ignore_config";
2627 }
2628
2629 } else {
2630 # We booted without this config, remove it from the minconfigs.
2631 doprint "$config is not needed, disabling\n";
2632
2633 delete $min_configs{$config};
2634
2635 # Also disable anything that is not enabled in this config
2636 my %configs;
2637 assign_configs \%configs, $output_config;
2638 my @config_keys = keys %min_configs;
2639 foreach my $config (@config_keys) {
2640 if (!defined($configs{$config})) {
2641 doprint "$config is not set, disabling\n";
2642 delete $min_configs{$config};
2643 }
2644 }
2645
2646 # Save off all the current mandidory configs
2647 open (OUT, ">$temp_config")
2648 or die "Can't write to $temp_config";
2649 foreach my $config (keys %keep_configs) {
2650 print OUT "$keep_configs{$config}\n";
2651 }
2652 foreach my $config (keys %min_configs) {
2653 print OUT "$min_configs{$config}\n";
2654 }
2655 close OUT;
2656
2657 run_command "mv $temp_config $output_minconfig" or
2658 dodie "failed to copy update to $output_minconfig";
2659 }
2660
2661 doprint "Reboot and wait $sleep_time seconds\n";
2662 reboot;
2663 start_monitor;
2664 wait_for_monitor $sleep_time;
2665 end_monitor;
2666 }
2667
2668 success $i;
2669 return 1;
2670}
2671
2672$#ARGV < 1 or die "ktest.pl version: $VERSION\n usage: ktest.pl config-file\n";
2673
2674if ($#ARGV == 0) {
2675 $ktest_config = $ARGV[0];
2676 if (! -f $ktest_config) {
2677 print "$ktest_config does not exist.\n";
2678 if (!read_yn "Create it?") {
2679 exit 0;
2680 }
2681 }
2682} else {
2683 $ktest_config = "ktest.conf";
2684}
2685
2686if (! -f $ktest_config) {
2687 open(OUT, ">$ktest_config") or die "Can not create $ktest_config";
2688 print OUT << "EOF"
2689# Generated by ktest.pl
2690#
2691# Define each test with TEST_START
2692# The config options below it will override the defaults
2693TEST_START
2694
2695DEFAULTS
2696EOF
2697;
2698 close(OUT);
2699}
2700read_config $ktest_config;
2701
2702if (defined($opt{"LOG_FILE"})) {
2703 $opt{"LOG_FILE"} = eval_option($opt{"LOG_FILE"}, -1);
2704}
2705
2706# Append any configs entered in manually to the config file.
2707my @new_configs = keys %entered_configs;
2708if ($#new_configs >= 0) {
2709 print "\nAppending entered in configs to $ktest_config\n";
2710 open(OUT, ">>$ktest_config") or die "Can not append to $ktest_config";
2711 foreach my $config (@new_configs) {
2712 print OUT "$config = $entered_configs{$config}\n";
2713 $opt{$config} = $entered_configs{$config};
2714 }
2715}
2716
2717if ($opt{"CLEAR_LOG"} && defined($opt{"LOG_FILE"})) {
2718 unlink $opt{"LOG_FILE"};
2719}
2720
2721doprint "\n\nSTARTING AUTOMATED TESTS\n\n";
2722
2723for (my $i = 0, my $repeat = 1; $i <= $opt{"NUM_TESTS"}; $i += $repeat) {
2724
2725 if (!$i) {
2726 doprint "DEFAULT OPTIONS:\n";
2727 } else {
2728 doprint "\nTEST $i OPTIONS";
2729 if (defined($repeat_tests{$i})) {
2730 $repeat = $repeat_tests{$i};
2731 doprint " ITERATE $repeat";
2732 }
2733 doprint "\n";
2734 }
2735
2736 foreach my $option (sort keys %opt) {
2737
2738 if ($option =~ /\[(\d+)\]$/) {
2739 next if ($i != $1);
2740 } else {
2741 next if ($i);
2742 }
2743
2744 doprint "$option = $opt{$option}\n";
2745 }
2746}
2747
2748sub __set_test_option {
2749 my ($name, $i) = @_;
2750
2751 my $option = "$name\[$i\]";
2752
2753 if (defined($opt{$option})) {
2754 return $opt{$option};
2755 }
2756
2757 foreach my $test (keys %repeat_tests) {
2758 if ($i >= $test &&
2759 $i < $test + $repeat_tests{$test}) {
2760 $option = "$name\[$test\]";
2761 if (defined($opt{$option})) {
2762 return $opt{$option};
2763 }
2764 }
2765 }
2766
2767 if (defined($opt{$name})) {
2768 return $opt{$name};
2769 }
2770
2771 return undef;
2772}
2773
2774sub set_test_option {
2775 my ($name, $i) = @_;
2776
2777 my $option = __set_test_option($name, $i);
2778 return $option if (!defined($option));
2779
2780 return eval_option($option, $i);
2781}
2782
2783# First we need to do is the builds
2784for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
2785
2786 $iteration = $i;
2787
2788 my $makecmd = set_test_option("MAKE_CMD", $i);
2789
2790 $machine = set_test_option("MACHINE", $i);
2791 $ssh_user = set_test_option("SSH_USER", $i);
2792 $tmpdir = set_test_option("TMP_DIR", $i);
2793 $outputdir = set_test_option("OUTPUT_DIR", $i);
2794 $builddir = set_test_option("BUILD_DIR", $i);
2795 $test_type = set_test_option("TEST_TYPE", $i);
2796 $build_type = set_test_option("BUILD_TYPE", $i);
2797 $build_options = set_test_option("BUILD_OPTIONS", $i);
2798 $pre_build = set_test_option("PRE_BUILD", $i);
2799 $post_build = set_test_option("POST_BUILD", $i);
2800 $pre_build_die = set_test_option("PRE_BUILD_DIE", $i);
2801 $post_build_die = set_test_option("POST_BUILD_DIE", $i);
2802 $power_cycle = set_test_option("POWER_CYCLE", $i);
2803 $reboot = set_test_option("REBOOT", $i);
2804 $noclean = set_test_option("BUILD_NOCLEAN", $i);
2805 $minconfig = set_test_option("MIN_CONFIG", $i);
2806 $output_minconfig = set_test_option("OUTPUT_MIN_CONFIG", $i);
2807 $start_minconfig = set_test_option("START_MIN_CONFIG", $i);
2808 $ignore_config = set_test_option("IGNORE_CONFIG", $i);
2809 $run_test = set_test_option("TEST", $i);
2810 $addconfig = set_test_option("ADD_CONFIG", $i);
2811 $reboot_type = set_test_option("REBOOT_TYPE", $i);
2812 $grub_menu = set_test_option("GRUB_MENU", $i);
2813 $post_install = set_test_option("POST_INSTALL", $i);
2814 $reboot_script = set_test_option("REBOOT_SCRIPT", $i);
2815 $reboot_on_error = set_test_option("REBOOT_ON_ERROR", $i);
2816 $poweroff_on_error = set_test_option("POWEROFF_ON_ERROR", $i);
2817 $die_on_failure = set_test_option("DIE_ON_FAILURE", $i);
2818 $power_off = set_test_option("POWER_OFF", $i);
2819 $powercycle_after_reboot = set_test_option("POWERCYCLE_AFTER_REBOOT", $i);
2820 $poweroff_after_halt = set_test_option("POWEROFF_AFTER_HALT", $i);
2821 $sleep_time = set_test_option("SLEEP_TIME", $i);
2822 $bisect_sleep_time = set_test_option("BISECT_SLEEP_TIME", $i);
2823 $patchcheck_sleep_time = set_test_option("PATCHCHECK_SLEEP_TIME", $i);
2824 $ignore_warnings = set_test_option("IGNORE_WARNINGS", $i);
2825 $bisect_manual = set_test_option("BISECT_MANUAL", $i);
2826 $bisect_skip = set_test_option("BISECT_SKIP", $i);
2827 $config_bisect_good = set_test_option("CONFIG_BISECT_GOOD", $i);
2828 $store_failures = set_test_option("STORE_FAILURES", $i);
2829 $test_name = set_test_option("TEST_NAME", $i);
2830 $timeout = set_test_option("TIMEOUT", $i);
2831 $booted_timeout = set_test_option("BOOTED_TIMEOUT", $i);
2832 $console = set_test_option("CONSOLE", $i);
2833 $detect_triplefault = set_test_option("DETECT_TRIPLE_FAULT", $i);
2834 $success_line = set_test_option("SUCCESS_LINE", $i);
2835 $stop_after_success = set_test_option("STOP_AFTER_SUCCESS", $i);
2836 $stop_after_failure = set_test_option("STOP_AFTER_FAILURE", $i);
2837 $stop_test_after = set_test_option("STOP_TEST_AFTER", $i);
2838 $build_target = set_test_option("BUILD_TARGET", $i);
2839 $ssh_exec = set_test_option("SSH_EXEC", $i);
2840 $scp_to_target = set_test_option("SCP_TO_TARGET", $i);
2841 $target_image = set_test_option("TARGET_IMAGE", $i);
2842 $localversion = set_test_option("LOCALVERSION", $i);
2843
2844 $start_minconfig_defined = 1;
2845
2846 if (!defined($start_minconfig)) {
2847 $start_minconfig_defined = 0;
2848 $start_minconfig = $minconfig;
2849 }
2850
2851 chdir $builddir || die "can't change directory to $builddir";
2852
2853 if (!-d $tmpdir) {
2854 mkpath($tmpdir) or
2855 die "can't create $tmpdir";
2856 }
2857
2858 $ENV{"SSH_USER"} = $ssh_user;
2859 $ENV{"MACHINE"} = $machine;
2860
2861 $target = "$ssh_user\@$machine";
2862
2863 $buildlog = "$tmpdir/buildlog-$machine";
2864 $dmesg = "$tmpdir/dmesg-$machine";
2865 $make = "$makecmd O=$outputdir";
2866 $output_config = "$outputdir/.config";
2867
2868 if ($reboot_type eq "grub") {
2869 dodie "GRUB_MENU not defined" if (!defined($grub_menu));
2870 } elsif (!defined($reboot_script)) {
2871 dodie "REBOOT_SCRIPT not defined"
2872 }
2873
2874 my $run_type = $build_type;
2875 if ($test_type eq "patchcheck") {
2876 $run_type = $opt{"PATCHCHECK_TYPE[$i]"};
2877 } elsif ($test_type eq "bisect") {
2878 $run_type = $opt{"BISECT_TYPE[$i]"};
2879 } elsif ($test_type eq "config_bisect") {
2880 $run_type = $opt{"CONFIG_BISECT_TYPE[$i]"};
2881 }
2882
2883 if ($test_type eq "make_min_config") {
2884 $run_type = "";
2885 }
2886
2887 # mistake in config file?
2888 if (!defined($run_type)) {
2889 $run_type = "ERROR";
2890 }
2891
2892 doprint "\n\n";
2893 doprint "RUNNING TEST $i of $opt{NUM_TESTS} with option $test_type $run_type\n\n";
2894
2895 unlink $dmesg;
2896 unlink $buildlog;
2897
2898 if (defined($addconfig)) {
2899 my $min = $minconfig;
2900 if (!defined($minconfig)) {
2901 $min = "";
2902 }
2903 run_command "cat $addconfig $min > $tmpdir/add_config" or
2904 dodie "Failed to create temp config";
2905 $minconfig = "$tmpdir/add_config";
2906 }
2907
2908 my $checkout = $opt{"CHECKOUT[$i]"};
2909 if (defined($checkout)) {
2910 run_command "git checkout $checkout" or
2911 die "failed to checkout $checkout";
2912 }
2913
2914 if ($test_type eq "bisect") {
2915 bisect $i;
2916 next;
2917 } elsif ($test_type eq "config_bisect") {
2918 config_bisect $i;
2919 next;
2920 } elsif ($test_type eq "patchcheck") {
2921 patchcheck $i;
2922 next;
2923 } elsif ($test_type eq "make_min_config") {
2924 make_min_config $i;
2925 next;
2926 }
2927
2928 if ($build_type ne "nobuild") {
2929 build $build_type or next;
2930 }
2931
2932 if ($test_type ne "build") {
2933 my $failed = 0;
2934 start_monitor_and_boot or $failed = 1;
2935
2936 if (!$failed && $test_type ne "boot" && defined($run_test)) {
2937 do_run_test or $failed = 1;
2938 }
2939 end_monitor;
2940 next if ($failed);
2941 }
2942
2943 success $i;
2944}
2945
2946if ($opt{"POWEROFF_ON_SUCCESS"}) {
2947 halt;
2948} elsif ($opt{"REBOOT_ON_SUCCESS"} && !do_not_reboot) {
2949 reboot;
2950}
2951
2952doprint "\n $successes of $opt{NUM_TESTS} tests were successful\n\n";
2953
2954exit 0;