[PATCH i-g-t v2 2/9] trace.pl: Improve readability of graphical timeline representation

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From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

We add stripes for different stages of request execution so it is easier
to follow one context in the multi-colour mode.

Vertical stripe pattern indicates pipeline "blockages" - requests waiting
for dependencies before they are runnable.

Diagonal stripes indicate runnable requests waiting for GPU time.

Horizontal strips are requests executing on the GPU.

Also use this new multi-coloured mode from media-bench.pl.

v2:
 John Harrison:
 * Mention media-bench.pl in the commit.
 * Fix HTML for single colour mode.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
 scripts/media-bench.pl |  2 +-
 scripts/trace.pl       | 31 ++++++++++++++++++++-----------
 2 files changed, 21 insertions(+), 12 deletions(-)

diff --git a/scripts/media-bench.pl b/scripts/media-bench.pl
index 723e5f1cf1b8..bfea9ca008d9 100755
--- a/scripts/media-bench.pl
+++ b/scripts/media-bench.pl
@@ -212,7 +212,7 @@ sub trace_workload
 	show_cmd($cmd);
 	system($cmd);
 
-	$cmd = "perf script | $tracepl --html -x ctxsave -s --squash-ctx-id ";
+	$cmd = "perf script | $tracepl --html -x ctxsave -s -c --squash-ctx-id ";
 	$cmd .= join ' ', map("-i $_", @skip_engine);
 	$cmd .= " > ${file}.html";
 	show_cmd($cmd);
diff --git a/scripts/trace.pl b/scripts/trace.pl
index c8182a8ea86d..754075703edd 100755
--- a/scripts/trace.pl
+++ b/scripts/trace.pl
@@ -743,9 +743,9 @@ foreach my $key (keys %reqwait) {
 say sprintf('GPU: %.2f%% idle, %.2f%% busy',
 	     $flat_busy{'gpu-idle'}, $flat_busy{'gpu-busy'}) unless $html;
 
-my $queued_colour = $colour_contexts ? 'multi-colour light' : 'blue';
-my $runnable_colour = $colour_contexts ? 'multi-colour dark' : 'grey';
-my $execute_colour = $colour_contexts ? 'multi-colour' : 'pink';
+my $queued_colour = $colour_contexts ? 'multi-colour light, vertical stripes' : 'blue';
+my $runnable_colour = $colour_contexts ? 'multi-colour dark, angled stripes' : 'grey';
+my $execute_colour = $colour_contexts ? 'multi-colour, horizontal stripes' : 'pink';
 
 print <<ENDHTML if $html;
 <!DOCTYPE HTML>
@@ -892,11 +892,23 @@ sub ctx_colour
 	my ($ctx, $s, $l) = (@_);
 	my $val;
 
-	return 'Pink;' unless $colour_contexts;
+	return 'Pink' unless $colour_contexts;
 
 	$val = int(360 / ($max_ctx - $min_ctx + 1)) * ($ctx - $min_ctx);
 
-	return "hsl($val, $s%, $l%);";
+	return "hsl($val, $s%, $l%)";
+}
+
+sub box_style
+{
+	my ($ctx, $deg, $s, $l) = @_;
+
+	return 'color: black; background: repeating-linear-gradient(' .
+		$deg . 'deg, ' .
+		ctx_colour($ctx, $s, $l) . ', ' .
+		ctx_colour($ctx, $s, $l) . ' 10px, ' .
+		ctx_colour($ctx, $s, int($l * 0.90)) . ' 10px, ' .
+		ctx_colour($ctx, $s, int($l * 0.90)) . ' 20px);';
 }
 
 my $i = 0;
@@ -913,8 +925,7 @@ foreach my $key (sort sortQueue keys %db) {
 	# submit to execute
 	unless (exists $skip_box{'queue'}) {
 		$skey = 2 * $max_seqno * $ctx + 2 * $seqno;
-		$style = 'color: black; background-color: ' .
-			 ctx_colour($ctx, 35, 85);
+		$style = box_style($ctx, 90, 35, 85);
 		$content = "$name<br>$db{$key}->{'submit-delay'}us <small>($db{$key}->{'execute-delay'}us)</small>";
 		$startend = 'start: \'' . ts($queue) . '\', end: \'' . ts($submit) . '\'';
 		print "\t{id: $i, key: $skey, $type group: $group, subgroup: 1, subgroupOrder: 1, content: '$content', $startend, style: \'$style\'},\n";
@@ -924,8 +935,7 @@ foreach my $key (sort sortQueue keys %db) {
 	# execute to start
 	unless (exists $skip_box{'ready'}) {
 		$skey = 2 * $max_seqno * $ctx + 2 * $seqno + 1;
-		$style = 'color: black; background-color: ' .
-			 ctx_colour($ctx, 35, 45);
+		$style = box_style($ctx, 45, 35, 45);
 		$content = "<small>$name<br>$db{$key}->{'execute-delay'}us</small>";
 		$startend = 'start: \'' . ts($submit) . '\', end: \'' . ts($start) . '\'';
 		print "\t{id: $i, key: $skey, $type group: $group, subgroup: 1, subgroupOrder: 2, content: '$content', $startend, style: \'$style\'},\n";
@@ -938,8 +948,7 @@ foreach my $key (sort sortQueue keys %db) {
 		if (exists $db{$key}->{'incomplete'}) {
 			$style = 'color: white; background-color: red;';
 		} else {
-			$style = 'color: black; background-color: ' .
-				  ctx_colour($ctx, 80, 65);
+			$style = box_style($ctx, 0, 80, 65);
 		}
 		$content = "$name <small>$db{$key}->{'port'}</small>";
 		$content .= ' <small><i>???</i></small> ' if exists $db{$key}->{'incomplete'};
-- 
2.17.0

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