tracing/fastboot: fix issues and improve output of bootgraph.pl

David Sanders reported some issues with bootgraph.pl's display
of his sytems bootup; this commit fixes these by scaling the graph
not from 0 - end time but from the first initcall to the end time;
the minimum display size etc also now need to scale with this, as does
the axis display.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>

1 files changed, 16 insertions, 13 deletions

diff --git a/scripts/bootgraph.pl b/scripts/bootgraph.pl
index c34b359c34a..4baf4998558 100644
--- a/scripts/bootgraph.pl
+++ b/scripts/bootgraph.pl
@@ -40,6 +40,7 @@
 my %start, %end;
 my $done = 0;
 my $maxtime = 0;
+my $firsttime = 100;
 my $count = 0;
 my %pids;
 
@@ -49,6 +50,9 @@ while (<>) {
                 my $func = $2;
                 if ($done == 0) {
                         $start{$func} = $1;
+                        if ($1 < $firsttime) {
+                                $firsttime = $1;
+                        }
                 }
                 if ($line =~ /\@ ([0-9]+)/) {
                         $pids{$func} = $1;
@@ -65,6 +69,9 @@ while (<>) {
         if ($line =~ /Write protecting the/) {
                 $done = 1;
         }
+        if ($line =~ /Freeing unused kernel memory/) {
+                $done = 1;
+        }
 }
 
 if ($count == 0) {
@@ -93,8 +100,8 @@ $styles[9] = "fill:rgb(255,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0
 $styles[10] = "fill:rgb(255,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
 $styles[11] = "fill:rgb(128,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)";
 
-my $mult = 950.0 / $maxtime;
-my $threshold = 0.0500 / $maxtime;
+my $mult = 950.0 / ($maxtime - $firsttime);
+my $threshold = ($maxtime - $firsttime) / 60.0;
 my $stylecounter = 0;
 my %rows;
 my $rowscount = 1;
@@ -103,15 +110,9 @@ while (($key,$value) = each %start) {
 
         if ($duration >= $threshold) {
                 my $s, $s2, $e, $y;
-                $pid = $pids{$key};
-
-                if (!defined($rows{$pid})) {
-                        $rows{$pid} = $rowscount;
-                        $rowscount = $rowscount + 1;
-                }
                 $s = ($value - $firsttime) * $mult;
                 $s2 = $s + 6;
-                $e = $end{$key} * $mult;
+                $e = ($end{$key} - $firsttime) * $mult;
                 $w = $e - $s;
 
                 $y = $rows{$pid} * 150;
@@ -130,11 +131,13 @@ while (($key,$value) = each %start) {
 
 
 # print the time line on top
-my $time = 0.0;
+my $time = $firsttime;
+my $step = ($maxtime - $firsttime) / 15;
 while ($time < $maxtime) {
-        my $s2 = $time * $mult;
-        print "<text transform=\"translate($s2,89) rotate(90)\">$time</text>\n";
-        $time = $time + 0.1;
+        my $s2 = ($time - $firsttime) * $mult;
+        my $tm = int($time * 100) / 100.0;
+        print "<text transform=\"translate($s2,89) rotate(90)\">$tm</text>\n";
+        $time = $time + $step;
 }
 
 print "</svg>\n";