Arjan van de Ven | aa5d915 | 2008-09-13 09:36:06 -0700 | [diff] [blame] | 1 | #!/usr/bin/perl |
| 2 | |
| 3 | # Copyright 2008, Intel Corporation |
| 4 | # |
| 5 | # This file is part of the Linux kernel |
| 6 | # |
| 7 | # This program file is free software; you can redistribute it and/or modify it |
| 8 | # under the terms of the GNU General Public License as published by the |
| 9 | # Free Software Foundation; version 2 of the License. |
| 10 | # |
| 11 | # This program is distributed in the hope that it will be useful, but WITHOUT |
| 12 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | # for more details. |
| 15 | # |
| 16 | # You should have received a copy of the GNU General Public License |
| 17 | # along with this program in a file named COPYING; if not, write to the |
| 18 | # Free Software Foundation, Inc., |
| 19 | # 51 Franklin Street, Fifth Floor, |
| 20 | # Boston, MA 02110-1301 USA |
| 21 | # |
| 22 | # Authors: |
| 23 | # Arjan van de Ven <arjan@linux.intel.com> |
| 24 | |
| 25 | |
| 26 | # |
| 27 | # This script turns a dmesg output into a SVG graphic that shows which |
| 28 | # functions take how much time. You can view SVG graphics with various |
| 29 | # programs, including Inkscape, The Gimp and Firefox. |
| 30 | # |
| 31 | # |
| 32 | # For this script to work, the kernel needs to be compiled with the |
| 33 | # CONFIG_PRINTK_TIME configuration option enabled, and with |
| 34 | # "initcall_debug" passed on the kernel command line. |
| 35 | # |
| 36 | # usage: |
| 37 | # dmesg | perl scripts/bootgraph.pl > output.svg |
| 38 | # |
| 39 | |
Frederic Weisbecker | ddc7a01 | 2008-10-04 21:35:48 +0200 | [diff] [blame] | 40 | my %start, %end; |
Arjan van de Ven | aa5d915 | 2008-09-13 09:36:06 -0700 | [diff] [blame] | 41 | my $done = 0; |
Arjan van de Ven | aa5d915 | 2008-09-13 09:36:06 -0700 | [diff] [blame] | 42 | my $maxtime = 0; |
| 43 | my $count = 0; |
Frederic Weisbecker | ddc7a01 | 2008-10-04 21:35:48 +0200 | [diff] [blame] | 44 | my %pids; |
| 45 | |
Arjan van de Ven | aa5d915 | 2008-09-13 09:36:06 -0700 | [diff] [blame] | 46 | while (<>) { |
| 47 | my $line = $_; |
| 48 | if ($line =~ /([0-9\.]+)\] calling ([a-zA-Z\_]+)\+/) { |
| 49 | my $func = $2; |
| 50 | if ($done == 0) { |
| 51 | $start{$func} = $1; |
| 52 | } |
Arjan van de Ven | aa5d915 | 2008-09-13 09:36:06 -0700 | [diff] [blame] | 53 | if ($line =~ /\@ ([0-9]+)/) { |
Frederic Weisbecker | ddc7a01 | 2008-10-04 21:35:48 +0200 | [diff] [blame] | 54 | $pids{$func} = $1; |
Arjan van de Ven | aa5d915 | 2008-09-13 09:36:06 -0700 | [diff] [blame] | 55 | } |
| 56 | $count = $count + 1; |
| 57 | } |
| 58 | |
| 59 | if ($line =~ /([0-9\.]+)\] initcall ([a-zA-Z\_]+)\+.*returned/) { |
| 60 | if ($done == 0) { |
| 61 | $end{$2} = $1; |
| 62 | $maxtime = $1; |
| 63 | } |
| 64 | } |
| 65 | if ($line =~ /Write protecting the/) { |
| 66 | $done = 1; |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | if ($count == 0) { |
| 71 | print "No data found in the dmesg. Make sure CONFIG_PRINTK_TIME is enabled and\n"; |
| 72 | print "that initcall_debug is passed on the kernel command line.\n\n"; |
| 73 | print "Usage: \n"; |
| 74 | print " dmesg | perl scripts/bootgraph.pl > output.svg\n\n"; |
| 75 | exit; |
| 76 | } |
| 77 | |
| 78 | print "<?xml version=\"1.0\" standalone=\"no\"?> \n"; |
| 79 | print "<svg width=\"1000\" height=\"100%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n"; |
| 80 | |
| 81 | my @styles; |
| 82 | |
| 83 | $styles[0] = "fill:rgb(0,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| 84 | $styles[1] = "fill:rgb(0,255,0);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| 85 | $styles[2] = "fill:rgb(255,0,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| 86 | $styles[3] = "fill:rgb(255,255,20);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| 87 | $styles[4] = "fill:rgb(255,0,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| 88 | $styles[5] = "fill:rgb(0,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| 89 | $styles[6] = "fill:rgb(0,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| 90 | $styles[7] = "fill:rgb(0,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| 91 | $styles[8] = "fill:rgb(255,0,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| 92 | $styles[9] = "fill:rgb(255,255,128);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| 93 | $styles[10] = "fill:rgb(255,128,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| 94 | $styles[11] = "fill:rgb(128,255,255);fill-opacity:0.5;stroke-width:1;stroke:rgb(0,0,0)"; |
| 95 | |
| 96 | my $mult = 950.0 / $maxtime; |
| 97 | my $threshold = 0.0500 / $maxtime; |
| 98 | my $stylecounter = 0; |
Frederic Weisbecker | ddc7a01 | 2008-10-04 21:35:48 +0200 | [diff] [blame] | 99 | my %rows; |
| 100 | my $rowscount = 1; |
Arjan van de Ven | aa5d915 | 2008-09-13 09:36:06 -0700 | [diff] [blame] | 101 | while (($key,$value) = each %start) { |
| 102 | my $duration = $end{$key} - $start{$key}; |
| 103 | |
| 104 | if ($duration >= $threshold) { |
| 105 | my $s, $s2, $e, $y; |
Frederic Weisbecker | ddc7a01 | 2008-10-04 21:35:48 +0200 | [diff] [blame] | 106 | $pid = $pids{$key}; |
| 107 | |
| 108 | if (!defined($rows{$pid})) { |
| 109 | $rows{$pid} = $rowscount; |
| 110 | $rowscount = $rowscount + 1; |
| 111 | } |
| 112 | $s = ($value - $firsttime) * $mult; |
Arjan van de Ven | aa5d915 | 2008-09-13 09:36:06 -0700 | [diff] [blame] | 113 | $s2 = $s + 6; |
| 114 | $e = $end{$key} * $mult; |
| 115 | $w = $e - $s; |
| 116 | |
Frederic Weisbecker | ddc7a01 | 2008-10-04 21:35:48 +0200 | [diff] [blame] | 117 | $y = $rows{$pid} * 150; |
Arjan van de Ven | aa5d915 | 2008-09-13 09:36:06 -0700 | [diff] [blame] | 118 | $y2 = $y + 4; |
| 119 | |
| 120 | $style = $styles[$stylecounter]; |
| 121 | $stylecounter = $stylecounter + 1; |
| 122 | if ($stylecounter > 11) { |
| 123 | $stylecounter = 0; |
| 124 | }; |
| 125 | |
| 126 | print "<rect x=\"$s\" width=\"$w\" y=\"$y\" height=\"145\" style=\"$style\"/>\n"; |
| 127 | print "<text transform=\"translate($s2,$y2) rotate(90)\">$key</text>\n"; |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | |
| 132 | # print the time line on top |
| 133 | my $time = 0.0; |
| 134 | while ($time < $maxtime) { |
| 135 | my $s2 = $time * $mult; |
| 136 | print "<text transform=\"translate($s2,89) rotate(90)\">$time</text>\n"; |
| 137 | $time = $time + 0.1; |
| 138 | } |
| 139 | |
| 140 | print "</svg>\n"; |