Merge tag 'ktest-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest

Pull ktest updates from Steven Rostedt:
 "These are various fixes that I have made and never got around to
  pushing. I've been asked to get the upstream repo back up-to-date"

* tag 'ktest-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
  ktest: Add variable run_command_status to save status of commands executed
  ktest.pl: Powercycle the box on reboot if no connection can be made
  ktest: Add timeout to ssh command
  ktest: Fix child exit code processing
  ktest: Have POST_TEST run after the test has totally completed

Author: torvalds

tools/testing/ktest/ktest.pl

@@ -179,6 +179,7 @@
 my $iteration = 0;
 my $successes = 0;
 my $stty_orig;
+my $run_command_status = 0;
 
 my $bisect_good;
 my $bisect_bad;
@@ -1325,26 +1326,44 @@ sub eval_option {
 
 sub reboot {
     my ($time) = @_;
+    my $powercycle = 0;
 
-    # Make sure everything has been written to disk
-    run_ssh("sync");
+    # test if the machine can be connected to within 5 seconds
+    my $stat = run_ssh("echo check machine status", 5);
+    if (!$stat) {
+	doprint("power cycle\n");
+	$powercycle = 1;
+    }
+
+    if ($powercycle) {
+	run_command "$power_cycle";
 
-    if (defined($time)) {
 	start_monitor;
 	# flush out current monitor
 	# May contain the reboot success line
 	wait_for_monitor 1;
-    }
 
-    # try to reboot normally
-    if (run_command $reboot) {
-	if (defined($powercycle_after_reboot)) {
-	    sleep $powercycle_after_reboot;
+    } else {
+	# Make sure everything has been written to disk
+	run_ssh("sync");
+
+	if (defined($time)) {
+	    start_monitor;
+	    # flush out current monitor
+	    # May contain the reboot success line
+	    wait_for_monitor 1;
+	}
+
+	# try to reboot normally
+	if (run_command $reboot) {
+	    if (defined($powercycle_after_reboot)) {
+		sleep $powercycle_after_reboot;
+		run_command "$power_cycle";
+	    }
+	} else {
+	    # nope? power cycle it.
 	    run_command "$power_cycle";
 	}
-    } else {
-	# nope? power cycle it.
-	run_command "$power_cycle";
     }
 
     if (defined($time)) {
@@ -1412,6 +1431,10 @@ sub dodie {
 	    system("stty $stty_orig");
     }
 
+    if (defined($post_test)) {
+	run_command $post_test;
+    }
+
     die @_, "\n";
 }
 
@@ -1624,10 +1647,6 @@ sub save_logs {
 
 sub fail {
 
-	if (defined($post_test)) {
-		run_command $post_test;
-	}
-
 	if ($die_on_failure) {
 		dodie @_;
 	}
@@ -1660,23 +1679,26 @@ sub fail {
 	    save_logs "fail", $store_failures;
         }
 
+	if (defined($post_test)) {
+		run_command $post_test;
+	}
+
 	return 1;
 }
 
 sub run_command {
-    my ($command, $redirect) = @_;
+    my ($command, $redirect, $timeout) = @_;
     my $start_time;
     my $end_time;
     my $dolog = 0;
     my $dord = 0;
     my $pid;
 
-    $start_time = time;
-
     $command =~ s/\$SSH_USER/$ssh_user/g;
     $command =~ s/\$MACHINE/$machine/g;
 
     doprint("$command ... ");
+    $start_time = time;
 
     $pid = open(CMD, "$command 2>&1 |") or
 	(fail "unable to exec $command" and return 0);
@@ -1693,13 +1715,30 @@ sub run_command {
 	$dord = 1;
     }
 
-    while (<CMD>) {
-	print LOG if ($dolog);
-	print RD  if ($dord);
+    my $hit_timeout = 0;
+
+    while (1) {
+	my $fp = \*CMD;
+	if (defined($timeout)) {
+	    doprint "timeout = $timeout\n";
+	}
+	my $line = wait_for_input($fp, $timeout);
+	if (!defined($line)) {
+	    my $now = time;
+	    if (defined($timeout) && (($now - $start_time) >= $timeout)) {
+		doprint "Hit timeout of $timeout, killing process\n";
+		$hit_timeout = 1;
+		kill 9, $pid;
+	    }
+	    last;
+	}
+	print LOG $line if ($dolog);
+	print RD $line if ($dord);
     }
 
     waitpid($pid, 0);
-    my $failed = $?;
+    # shift 8 for real exit status
+    $run_command_status = $? >> 8;
 
     close(CMD);
     close(LOG) if ($dolog);
@@ -1714,21 +1753,25 @@ sub run_command {
 	doprint "[$delta seconds] ";
     }
 
-    if ($failed) {
+    if ($hit_timeout) {
+	$run_command_status = 1;
+    }
+
+    if ($run_command_status) {
 	doprint "FAILED!\n";
     } else {
 	doprint "SUCCESS\n";
     }
 
-    return !$failed;
+    return !$run_command_status;
 }
 
 sub run_ssh {
-    my ($cmd) = @_;
+    my ($cmd, $timeout) = @_;
     my $cp_exec = $ssh_exec;
 
     $cp_exec =~ s/\$SSH_COMMAND/$cmd/g;
-    return run_command "$cp_exec";
+    return run_command "$cp_exec", undef , $timeout;
 }
 
 sub run_scp {
@@ -2489,10 +2532,6 @@ sub halt {
 sub success {
     my ($i) = @_;
 
-    if (defined($post_test)) {
-	run_command $post_test;
-    }
-
     $successes++;
 
     my $name = "";
@@ -2517,6 +2556,10 @@ sub success {
 	doprint "Reboot and wait $sleep_time seconds\n";
 	reboot_to_good $sleep_time;
     }
+
+    if (defined($post_test)) {
+	run_command $post_test;
+    }
 }
 
 sub answer_bisect {
@@ -2537,16 +2580,15 @@ sub answer_bisect {
 }
 
 sub child_run_test {
-    my $failed = 0;
 
     # child should have no power
     $reboot_on_error = 0;
     $poweroff_on_error = 0;
     $die_on_failure = 1;
 
-    run_command $run_test, $testlog or $failed = 1;
+    run_command $run_test, $testlog;
 
-    exit $failed;
+    exit $run_command_status;
 }
 
 my $child_done;
@@ -2629,7 +2671,7 @@ sub do_run_test {
     }
 
     waitpid $child_pid, 0;
-    $child_exit = $?;
+    $child_exit = $? >> 8;
 
     my $end_time = time;
     $test_time = $end_time - $start_time;
@@ -3330,7 +3372,6 @@ sub config_bisect {
     save_config \%good_configs, $good_config;
     save_config \%bad_configs, $bad_config;
 
-
     if (defined($config_bisect_check) && $config_bisect_check ne "0") {
 	if ($config_bisect_check ne "good") {
 	    doprint "Testing bad config\n";