tracing/fastboot: fix initcalls disposition in bootgraph.pl

When bootgraph.pl parses a file, it gives one row
for each initcall's pid. But only few of them will
be displayed => the longest.

This patch corrects it by giving only a rows for pids
which have initcalls that will be displayed.

[ mingo@elte.hu: resolved conflicts ]
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 14 insertions, 12 deletions

diff --git a/scripts/bootgraph.pl b/scripts/bootgraph.pl
index d459b8bdef0..c34b359c34a 100644
--- a/scripts/bootgraph.pl
+++ b/scripts/bootgraph.pl
@@ -37,12 +37,12 @@
 #       dmesg | perl scripts/bootgraph.pl > output.svg
 #
 
-my @rows;
-my %start, %end, %row;
+my %start, %end;
 my $done = 0;
-my $rowcount = 0;
 my $maxtime = 0;
 my $count = 0;
+my %pids;
+
 while (<>) {
         my $line = $_;
         if ($line =~ /([0-9\.]+)\] calling  ([a-zA-Z\_]+)\+/) {
@@ -50,14 +50,8 @@ while (<>) {
                 if ($done == 0) {
                         $start{$func} = $1;
                 }
-                $row{$func} = 1;
                 if ($line =~ /\@ ([0-9]+)/) {
-                        my $pid = $1;
-                        if (!defined($rows[$pid])) {
-                                $rowcount = $rowcount + 1;
-                                $rows[$pid] = $rowcount;
-                        }
-                        $row{$func} = $rows[$pid];
+                        $pids{$func} = $1;
                 }
                 $count = $count + 1;
         }
@@ -102,17 +96,25 @@ $styles[11] = "fill:rgb(128,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(
 my $mult = 950.0 / $maxtime;
 my $threshold = 0.0500 / $maxtime;
 my $stylecounter = 0;
+my %rows;
+my $rowscount = 1;
 while (($key,$value) = each %start) {
         my $duration = $end{$key} - $start{$key};
 
         if ($duration >= $threshold) {
                 my $s, $s2, $e, $y;
-                $s = $value * $mult;
+                $pid = $pids{$key};
+
+                if (!defined($rows{$pid})) {
+                        $rows{$pid} = $rowscount;
+                        $rowscount = $rowscount + 1;
+                }
+                $s = ($value - $firsttime) * $mult;
                 $s2 = $s + 6;
                 $e = $end{$key} * $mult;
                 $w = $e - $s;
 
-                $y = $row{$key} * 150;
+                $y = $rows{$pid} * 150;
                 $y2 = $y + 4;
 
                 $style = $styles[$stylecounter];