On 7/12/2018 3:59 AM, Tvrtko Ursulin wrote:
From: John Harrison <john.c.harri...@intel.com>

Improve the timeline legend to show actual context colours.

v2: (Tvrtko Ursulin)
  * Commit msg.
  * Tweak layout for more compactness and more readability.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Cc: John Harrison <john.c.harri...@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
---
  scripts/trace.pl | 69 ++++++++++++++++++++++++++++++------------------
  1 file changed, 43 insertions(+), 26 deletions(-)

diff --git a/scripts/trace.pl b/scripts/trace.pl
index 7cafb3f52ba4..bd3039511f5d 100755
--- a/scripts/trace.pl
+++ b/scripts/trace.pl
@@ -738,9 +738,35 @@ say sprintf('GPU: %.2f%% idle, %.2f%% busy',
             $flat_busy{'gpu-idle'}, $flat_busy{'gpu-busy'}) unless $html;
my $timeline_text = $colour_contexts ?
-                   'Per context coloured shading like:' : 'Box shading like:';
+                   'per context coloured shading like' : 'box shading like';
my %ctx_colours;
+my $ctx_table;
+
+sub generate_ctx_table
+{
+       my @states = ('queue', 'ready', 'execute', 'ctxsave', 'incomplete');
+       my @ctxts;
+
+       if( $colour_contexts ) {
+               @ctxts = sort keys %ctxdb;
+       } else {
+               @ctxts = ($min_ctx);
+       }
+
+       $ctx_table .= '<table>';
+
+       foreach my $ctx (@ctxts) {
+               $ctx_table .= "<tr>\n";
+               $ctx_table .= "  <td>Context $ctx</td>\n" if $colour_contexts;
+               foreach my $state (@states) {
+                       $ctx_table .= "  <td align='center' valign='middle'><div style='" . box_style($ctx, 
$state) . " padding-top: 6px; padding-bottom: 6px; padding-left: 6x; padding-right: 6px;'>" . uc($state) . 
"</div></td>\n";
+               }
+               $ctx_table .= "</tr>\n";

As mentioned in the email, I would definitely add something like:
    my $i = 0;
    ...
    if( $i++ > 5)  {
        $ctx_table .= "<tr><td>etc...</td></tr>";
        last;
    }

I've had to analyse traces with hundreds of contexts in them before now. Which would produce an HTML file swamped by a huge legend (albeit with a beautifully smoothly shaded rainbow!).

With that...

Signed-off-by: John Harrison<john.c.harri...@intel.com>
Reviewed-by: John Harrison<john.c.harri...@intel.com>



+       }
+
+       $ctx_table .= '</table>';
+}
sub generate_ctx_colours
  {
@@ -754,12 +780,7 @@ sub generate_ctx_colours
generate_ctx_colours() if $html and $colour_contexts;
-
-my $queued_style = box_style($min_ctx, 'queue');
-my $ready_style = box_style($min_ctx, 'ready');
-my $execute_style = box_style($min_ctx, 'execute');
-my $ctxsave_style = box_style($min_ctx, 'ctxsave');
-my $incomplete_style = box_style($min_ctx, 'incomplete');
+generate_ctx_table() if $html;
print <<ENDHTML if $html;
  <!DOCTYPE HTML>
@@ -778,35 +799,27 @@ print <<ENDHTML if $html;
  </head>
  <body>
  <p>
-<b>Timeline request view:</b>
+<b>Timeline request view is $timeline_text:</b>
  <table>
-<tr><td colspan='4'>$timeline_text</td></tr>
  <tr>
-<td align='center'><div style='$queued_style'>QUEUED</div></td>
-<td align='center'><div style='$ready_style'>READY</div></td>
-<td align='center'><div style='$execute_style'>EXECUTE</div></td>
-<td align='center'><div style='$ctxsave_style'>CTXSAVE</div></td>
-</tr><tr>
-<td></td>
-<td></td>
-<td align='center'><div style='$incomplete_style'>(INCOMPLETE)</div></td>
-<td></td>
-</tr/></table>
-</p>
-<p>
-<small>
-QUEUED = requests executing on the GPU<br>
+<td>
+$ctx_table
+</td>
+<td>
+QUEUE = requests executing on the GPU<br>
  READY = runnable requests waiting for a slot on GPU<br>
  EXECUTE = requests waiting on fences and dependencies before they are 
runnable<br>
  CTXSAVE = GPU saving the context image<br>
-</small>
-</p>
+INCOMPLETE = request of unknown completion time
  <p>
  Boxes are in format 'ctx-id/seqno'.
  </p>
  <p>
  Use Ctrl+scroll-action to zoom-in/out and scroll-action or dragging to move 
around the timeline.
  </p>
+</td>
+</tr>
+</table>
  <p>
  <b>GPU idle: $flat_busy{'gpu-idle'}%</b>
  <br>
@@ -975,20 +988,24 @@ sub box_style
  {
        my ($ctx, $stage) = @_;
        my $deg;
+       my $text_col = 'white';
if ($stage eq 'queue') {
                $deg = 90;
+               $text_col = 'black' if $colour_contexts;
        } elsif ($stage eq 'ready') {
                $deg = 45;
        } elsif ($stage eq 'execute') {
                $deg = 0;
+               $text_col = 'black' if $colour_contexts;
        } elsif ($stage eq 'ctxsave') {
                $deg = 105;
+               $text_col = 'black' if $colour_contexts;
        } elsif ($stage eq 'incomplete') {
                $deg = 0;
        }
- return 'color: black; background: repeating-linear-gradient(' .
+       return "color: $text_col; background: repeating-linear-gradient(" .
                $deg . 'deg, ' .
                ctx_colour($ctx, $stage, 1.0) . ', ' .
                ctx_colour($ctx, $stage, 1.0) . ' 10px, ' .

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