]> pilppa.com Git - linux-2.6-omap-h63xx.git/commitdiff
bootgraph: make the bootgraph script show async waiting time
authorArjan van de Ven <arjan@linux.intel.com>
Sat, 10 Jan 2009 18:03:05 +0000 (10:03 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 10 Jan 2009 23:06:52 +0000 (15:06 -0800)
It is useful for diagnosing boot performance to see where async function
calls are waiting on serialization...  this patch adds this
functionality to the bootgraph.pl script.

The waiting time is shown as a half transparent, gray bar through the
block that is waiting.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
scripts/bootgraph.pl

index 0a498e33b30b5293019b007ae001de63dec01208..b0246307aac497ae36b8266180b48a244c9c374d 100644 (file)
@@ -41,11 +41,13 @@ use strict;
 
 my %start;
 my %end;
+my %type;
 my $done = 0;
 my $maxtime = 0;
 my $firsttime = 100;
 my $count = 0;
 my %pids;
+my %pidctr;
 
 while (<>) {
        my $line = $_;
@@ -53,6 +55,7 @@ while (<>) {
                my $func = $2;
                if ($done == 0) {
                        $start{$func} = $1;
+                       $type{$func} = 0;
                        if ($1 < $firsttime) {
                                $firsttime = $1;
                        }
@@ -63,12 +66,40 @@ while (<>) {
                $count = $count + 1;
        }
 
+       if ($line =~ /([0-9\.]+)\] async_waiting @ ([0-9]+)/) {
+               my $pid = $2;
+               my $func;
+               if (!defined($pidctr{$pid})) {
+                       $func = "wait_" . $pid . "_1";
+                       $pidctr{$pid} = 1;
+               } else {
+                       $pidctr{$pid} = $pidctr{$pid} + 1;
+                       $func = "wait_" . $pid . "_" . $pidctr{$pid};
+               }
+               if ($done == 0) {
+                       $start{$func} = $1;
+                       $type{$func} = 1;
+                       if ($1 < $firsttime) {
+                               $firsttime = $1;
+                       }
+               }
+               $pids{$func} = $pid;
+               $count = $count + 1;
+       }
+
        if ($line =~ /([0-9\.]+)\] initcall ([a-zA-Z0-9\_]+)\+.*returned/) {
                if ($done == 0) {
                        $end{$2} = $1;
                        $maxtime = $1;
                }
        }
+
+       if ($line =~ /([0-9\.]+)\] async_continuing @ ([0-9]+)/) {
+               my $pid = $2;
+               my $func =  "wait_" . $pid . "_" . $pidctr{$pid};
+               $end{$func} = $1;
+               $maxtime = $1;
+       }
        if ($line =~ /Write protecting the/) {
                $done = 1;
        }
@@ -105,6 +136,8 @@ $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 $style_wait = "fill:rgb(128,128,128);fill-opacity:0.5;stroke-width:0;stroke:rgb(0,0,0)";
+
 my $mult = 1950.0 / ($maxtime - $firsttime);
 my $threshold2 = ($maxtime - $firsttime) / 120.0;
 my $threshold = $threshold2/10;
@@ -139,11 +172,16 @@ foreach my $key (@initcalls) {
                        $stylecounter = 0;
                };
 
-               print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"145\" style=\"$style\"/>\n";
-               if ($duration >= $threshold2) {
-                       print "<text transform=\"translate($s2,$y2) rotate(90)\">$key</text>\n";
+               if ($type{$key} == 1) {
+                       $y = $y + 15;
+                       print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"115\" style=\"$style_wait\"/>\n";
                } else {
-                       print "<text transform=\"translate($s3,$y2) rotate(90)\" font-size=\"3pt\">$key</text>\n";
+                       print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"145\" style=\"$style\"/>\n";
+                       if ($duration >= $threshold2) {
+                               print "<text transform=\"translate($s2,$y2) rotate(90)\">$key</text>\n";
+                       } else {
+                               print "<text transform=\"translate($s3,$y2) rotate(90)\" font-size=\"3pt\">$key</text>\n";
+                       }
                }
        }
 }