| #!/usr/bin/perl |
| |
| # Copyright 2008, Intel Corporation |
| # |
| # This file is part of the Linux kernel |
| # |
| # This program file is free software; you can redistribute it and/or modify it |
| # under the terms of the GNU General Public License as published by the |
| # Free Software Foundation; version 2 of the License. |
| # |
| # This program is distributed in the hope that it will be useful, but WITHOUT |
| # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| # for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program in a file named COPYING; if not, write to the |
| # Free Software Foundation, Inc., |
| # 51 Franklin Street, Fifth Floor, |
| # Boston, MA 02110-1301 USA |
| # |
| # Authors: |
| # Arjan van de Ven <arjan@linux.intel.com> |
| |
| |
| # |
| # This script turns a dmesg output into a SVG graphic that shows which |
| # functions take how much time. You can view SVG graphics with various |
| # programs, including Inkscape, The Gimp and Firefox. |
| # |
| # |
| # For this script to work, the kernel needs to be compiled with the |
| # CONFIG_PRINTK_TIME configuration option enabled, and with |
| # "initcall_debug" passed on the kernel command line. |
| # |
| # usage: |
| # dmesg | perl scripts/bootgraph.pl > output.svg |
| # |
| |
| my %start, %end; |
| my $done = 0; |
| my $maxtime = 0; |
| my $count = 0; |
| my %pids; |
| |
| while (<>) { |
| my $line = $_; |
| if ($line =~ /([0-9\.]+)\] calling ([a-zA-Z\_]+)\+/) { |
| my $func = $2; |
| if ($done == 0) { |
| $start{$func} = $1; |
| } |
| if ($line =~ /\@ ([0-9]+)/) { |
| $pids{$func} = $1; |
| } |
| $count = $count + 1; |
| } |
| |
| if ($line =~ /([0-9\.]+)\] initcall ([a-zA-Z\_]+)\+.*returned/) { |
| if ($done == 0) { |
| $end{$2} = $1; |
| $maxtime = $1; |
| } |
| } |
| if ($line =~ /Write protecting the/) { |
| $done = 1; |
| } |
| } |
| |
| if ($count == 0) { |
| print "No data found in the dmesg. Make sure CONFIG_PRINTK_TIME is enabled and\n"; |
| print "that initcall_debug is passed on the kernel command line.\n\n"; |
| print "Usage: \n"; |
| print " dmesg | perl scripts/bootgraph.pl > output.svg\n\n"; |
| exit; |
| } |
| |
| print "<?xml version=\"1.0\" standalone=\"no\"?> \n"; |
| print "<svg width=\"1000\" height=\"100%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n"; |
| |
| my @styles; |
| |
| $styles[0] = "fill:rgb(0,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| $styles[1] = "fill:rgb(0,255,0);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| $styles[2] = "fill:rgb(255,0,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| $styles[3] = "fill:rgb(255,255,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| $styles[4] = "fill:rgb(255,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| $styles[5] = "fill:rgb(0,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| $styles[6] = "fill:rgb(0,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| $styles[7] = "fill:rgb(0,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| $styles[8] = "fill:rgb(255,0,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| $styles[9] = "fill:rgb(255,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| $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 $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; |
| $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 = $rows{$pid} * 150; |
| $y2 = $y + 4; |
| |
| $style = $styles[$stylecounter]; |
| $stylecounter = $stylecounter + 1; |
| if ($stylecounter > 11) { |
| $stylecounter = 0; |
| }; |
| |
| print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"145\" style=\"$style\"/>\n"; |
| print "<text transform=\"translate($s2,$y2) rotate(90)\">$key</text>\n"; |
| } |
| } |
| |
| |
| # print the time line on top |
| my $time = 0.0; |
| while ($time < $maxtime) { |
| my $s2 = $time * $mult; |
| print "<text transform=\"translate($s2,89) rotate(90)\">$time</text>\n"; |
| $time = $time + 0.1; |
| } |
| |
| print "</svg>\n"; |