ktest: Show times for build, install, boot and test

Seeing the times for how long a build, install, reboot and the
test takes is helpful for analyzing the test process. Seeing
how different changes affect the timings.

Show the build, install, boot and test times when at the end of
the test, or between each interval for tests that do those
mulitple times (like bisect and patchcheck).

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

tools/testing/ktest/ktest.pl

@@ -198,6 +198,11 @@
 my $patchcheck_cherry;
 my $patchcheck_end;
 
+my $build_time;
+my $install_time;
+my $reboot_time;
+my $test_time;
+
 # set when a test is something other that just building or install
 # which would require more options.
 my $buildonly = 1;
@@ -555,6 +560,66 @@ sub get_mandatory_config {
     }
 }
 
+sub show_time {
+    my ($time) = @_;
+
+    my $hours = 0;
+    my $minutes = 0;
+
+    if ($time > 3600) {
+	$hours = int($time / 3600);
+	$time -= $hours * 3600;
+    }
+    if ($time > 60) {
+	$minutes = int($time / 60);
+	$time -= $minutes * 60;
+    }
+
+    if ($hours > 0) {
+	doprint "$hours hour";
+	doprint "s" if ($hours > 1);
+	doprint " ";
+    }
+
+    if ($minutes > 0) {
+	doprint "$minutes minute";
+	doprint "s" if ($minutes > 1);
+	doprint " ";
+    }
+
+    doprint "$time second";
+    doprint "s" if ($time != 1);
+}
+
+sub print_times {
+    doprint "\n";
+    if ($build_time) {
+	doprint "Build time:   ";
+	show_time($build_time);
+	doprint "\n";
+    }
+    if ($install_time) {
+	doprint "Install time: ";
+	show_time($install_time);
+	doprint "\n";
+    }
+    if ($reboot_time) {
+	doprint "Reboot time:  ";
+	show_time($reboot_time);
+	doprint "\n";
+    }
+    if ($test_time) {
+	doprint "Test time:    ";
+	show_time($test_time);
+	doprint "\n";
+    }
+    # reset for iterations like bisect
+    $build_time = 0;
+    $install_time = 0;
+    $reboot_time = 0;
+    $test_time = 0;
+}
+
 sub get_mandatory_configs {
     get_mandatory_config("MACHINE");
     get_mandatory_config("BUILD_DIR");
@@ -1786,6 +1851,8 @@ sub monitor {
     my $skip_call_trace = 0;
     my $loops;
 
+    my $start_time = time;
+
     wait_for_monitor 5;
 
     my $line;
@@ -1910,6 +1977,9 @@ sub monitor {
 	}
     }
 
+    my $end_time = time;
+    $reboot_time = $end_time - $start_time;
+
     close(DMESG);
 
     if ($bug) {
@@ -1958,6 +2028,8 @@ sub install {
 
     return if ($no_install);
 
+    my $start_time = time;
+
     if (defined($pre_install)) {
 	my $cp_pre_install = eval_kernel_version $pre_install;
 	run_command "$cp_pre_install" or
@@ -1989,6 +2061,8 @@ sub install {
     if (!$install_mods) {
 	do_post_install;
 	doprint "No modules needed\n";
+	my $end_time = time;
+	$install_time = $end_time - $start_time;
 	return;
     }
 
@@ -2016,6 +2090,9 @@ sub install {
     run_ssh "rm -f /tmp/$modtar";
 
     do_post_install;
+
+    my $end_time = time;
+    $install_time = $end_time - $start_time;
 }
 
 sub get_version {
@@ -2228,6 +2305,8 @@ sub build {
 
     unlink $buildlog;
 
+    my $start_time = time;
+
     # Failed builds should not reboot the target
     my $save_no_reboot = $no_reboot;
     $no_reboot = 1;
@@ -2313,6 +2392,9 @@ sub build {
 
     $no_reboot = $save_no_reboot;
 
+    my $end_time = time;
+    $build_time = $end_time - $start_time;
+
     return 1;
 }
 
@@ -2403,6 +2485,8 @@ sub do_run_test {
     my $bug = 0;
     my $bug_ignored = 0;
 
+    my $start_time = time;
+
     wait_for_monitor 1;
 
     doprint "run test $run_test\n";
@@ -2469,6 +2553,9 @@ sub do_run_test {
     waitpid $child_pid, 0;
     $child_exit = $?;
 
+    my $end_time = time;
+    $test_time = $end_time - $start_time;
+
     if (!$bug && $in_bisect) {
 	if (defined($bisect_ret_good)) {
 	    if ($child_exit == $bisect_ret_good) {
@@ -2775,6 +2862,7 @@ sub bisect {
     do {
 	$result = run_bisect $type;
 	$test = run_git_bisect "git bisect $result";
+	print_times;
     } while ($test);
 
     run_command "git bisect log" or
@@ -3188,6 +3276,7 @@ sub config_bisect {
 
     do {
 	$ret = run_config_bisect \%good_configs, \%bad_configs;
+	print_times;
     } while (!$ret);
 
     return $ret if ($ret < 0);
@@ -3317,10 +3406,12 @@ sub patchcheck {
 	    do_run_test or $failed = 1;
 	}
 	end_monitor;
-	return 0 if ($failed);
-
+	if ($failed) {
+	    print_times;
+	    return 0;
+	}
 	patchcheck_reboot;
-
+	print_times;
     }
     $in_patchcheck = 0;
     success $i;
@@ -4020,6 +4111,11 @@ sub set_test_option {
 
     $iteration = $i;
 
+    $build_time = 0;
+    $install_time = 0;
+    $reboot_time = 0;
+    $test_time = 0;
+
     undef %force_config;
 
     my $makecmd = set_test_option("MAKE_CMD", $i);
@@ -4183,9 +4279,14 @@ sub set_test_option {
 	    do_run_test or $failed = 1;
 	}
 	end_monitor;
-	next if ($failed);
+	if ($failed) {
+	    print_times;
+	    next;
+	}
     }
 
+    print_times;
+
     success $i;
 }